| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 290040000 | Control in response to generator line conditions | 62 |
| 20080203734 | Wellbore rig generator engine power control - A system for controlling power load to a rig engine of a wellbore rig, the system including a controller for controlling a rig engine, a sensor for sensing the exhaust temperature of a rig engine, the sensor in communication with the controller for providing to the controller signals indicative of the exhaust temperature, and the controller maintaining power load to the rig engine based on said exhaust temperature. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 CFR 1.72(b). | 08-28-2008 |
| 20080296909 | Turbo-Pneumatic Assist for Electric Motor Starting - An electric motor prime mover and method of starting an electric motor prime mover is provided. The prime mover includes an electric motor, a pneumatic motor and a mechanical coupling operably connecting the pneumatic motor to a rotor of the electric motor. The pneumatic motor initiates startup of the electric motor by driving the rotor of the electric motor prior to applying electrical power to the electric motor. After the rotor has attained sufficient rotational speed electricity is applied to the electric motor to drive the rotor. The use of the pneumatic motor allows the rotor to be rotating as electricity is initially applied to the electric motor preventing or substantially reducing inrush currents. | 12-04-2008 |
| 20080296910 | POWER GENERATION CONTROL DEVICE AND VEHICLE HAVING THE SAME - A power generation control device for determining a crank position of an engine to reduce a start-up torque following an engine stop, enhancing startability, and reducing electric power consumption of a battery at start-up is provided. The power generation control device includes a magneto generator rotated by an engine, a generated electric current controller that rectifies an alternating electric current generated by the magneto into a direct current and supplies the direct current as a generated electric current to an electric appliance and controls a power generation amount to the electric appliance. A controlling section controls a power generation amount of a rectifying section. The controlling section is provided with an exhaust stroke stop estimation time control module for calculating engine rotational speed and acceleration values based on a signal related to a rotation cycle of a crankshaft or the magneto generator, for estimating a stop of the engine according to the rotational speed and the acceleration values, and for performing a control for increasing the power generation amount of the rectifying section when the engine stop is estimated to occur at an exhaust stroke of the engine. | 12-04-2008 |
| 20080309095 | Electronic Controller Matching Engine Power To Alternator Power And Maintaining Engine Frequency For A Free-Piston Stirling Engine Driving A Linear Alternator - A feedback control method and circuit for inclusion in a control system of an electrical power generating source that comprises a free piston Stirling engine driving a linear alternator. An instantaneous value of a variable, V | 12-18-2008 |
| 20090102203 | SYSTEM AND METHOD FOR POWER PRODUCTION USING A HYBRID HELICAL DETONATION DEVICE - The system and method described herein uses a hybrid pulsed detonation engine (PDE) system to drive a turbine that powers an electric generator. The combustion chamber of the PDE is shaped in a helical form, so that the external length of the section is reduced, while maintaining the distance for acceleration to detonation. This allows the achievement of deflagration to detonation transition without the help of turbulence enhancing obstacles, while keeping the overall size of the detonation tube small. The PDE output can be scaled by: increasing the cross sectional area of the detonation chamber; increasing the number of detonation tubes; and increasing the frequency of operation of the PDE. The replacement of conventional deflagrative internal combustion engines, including gas turbines and reciprocating engines, with pulsed detonation engines for electric power generation, may provide fuel savings and have a lower environmental impact. | 04-23-2009 |
| 20090127867 | Method and apparatus for controlling cogeneration system - In an apparatus (and a method) for controlling a cogeneration system equipped with a generation unit having a generator connectable to an AC power feed line between a commercial power network and an electrical load and an internal combustion engine for driving the generator, and a heat exchanger that exchanges heat with coolant of the engine with exhaust heat from the engine to warm up the coolant, there are provided with an exhaust gas temperature sensor that detects temperature of exhaust gas passing the heat exchanger, a temperature comparator that compares the exhaust gas temperature with a predetermined value and an operation stopper that stops the operation of the cogeneration system when the exhaust gas temperature is found to be less than the predetermined value. With this, it becomes possible to prevent moisture in the exhaust gas from being condensed and accumulated in the exhaust-gas heat exchanger. | 05-21-2009 |
| 20090127868 | Method and apparatus for controlling cogeneration system - In an apparatus (and a method) for controlling a cogeneration system equipped with a generation unit having a generator connectable to an AC power feed line between a commercial power network and an electrical load and an internal combustion engine driving the generator, and a heat exchanger that exchanges heat between coolant and exhaust heat from the engine, there are provided with a condensate water hose discharging condensate water generated by condensation of moisture in exhaust gas, a hose temperature sensor detecting temperature in the hose, an exhaust gas temperature sensor detecting temperature of the exhaust gas from the engine and an exhaust gas blowout discriminator discriminating that the exhaust gas blows out through the hose when a difference between the hose temperature and the exhaust gas temperature is found to be less than a predetermined value. With this, exhaust gas leakage caused by blowout can be easily detected. | 05-21-2009 |
| 20090322102 | System and Method for Power Production Using a Hybrid Helical Detonation Device - The system and method described herein uses a hybrid pulsed detonation engine (PDE) system to drive a turbine that powers an electric generator. The combustion chamber of the PDE is shaped in a helical form, so that the external length of the section is reduced, while maintaining the distance for acceleration to detonation. This allows the achievement of deflagration to detonation transition without the help of turbulence enhancing obstacles, while keeping the overall size of the detonation tube small. The PDE output can be scaled by: increasing the cross sectional area of the detonation chamber; increasing the number of detonation tubes; and increasing the frequency of operation of the PDE. The replacement of conventional deflagrative internal combustion engines, including gas turbines and reciprocating engines, with pulsed detonation engines for electric power generation, may provide fuel savings and have a lower environmental impact. | 12-31-2009 |
| 20100060017 | PROTECTION AND CONTROL SYSTEM - A system for protecting, controlling, and monitoring substation devices of a power system, includes a spare protection and control unit that, when there is a failure in a protection and control unit from among protection and control units that perform a protection and control operation for the substation devices, downloads unit information including software and a device setting value of failed protection and control unit from a database unit and functions as an alternative unit for the failed protection and control unit. | 03-11-2010 |
| 20100066099 | CONFIGURATION TO POWER ELECTRICAL COMPONENTS IN A VEHICLE - A vehicle includes a power supply, at least two auxiliary electrical components, and a load that is shared by the auxiliary electrical components. The two auxiliary electrical components are connected electrically to the power supply in a series configuration. One or more loads may be connected mechanically to the auxiliary electrical components in a parallel configuration. In one embodiment, the two auxiliary electrical components may include at least two compressors for a cooling system. | 03-18-2010 |
| 20110062725 | Generator And Carbon Monoxide Detector - A generator system and method are provided. The generator system including an internal combustion engine coupled to a generator. The internal combustion engine produces exhaust gases when operating. The system further includes a gas detector positioned in an enclosure into which exhaust gas may move. The detector is coupled to a signal transmitter that is operable to send a signal if a predetermined level of a selected gas or compound is sensed. The signal is received by an engine shut down device that is operable to shut down engine operation after the signal is received. | 03-17-2011 |
| 20110169278 | Operation of a Gas and a Steam Turbine System by Means of a Frequency Converter - A method for operating a gas and steam turbine system is provided. The system includes a frequency converter which is assigned to a starting device of a gas turbine, and a generator which is assigned to a steam turbine. The intention is to be able to obtain a particularly high level of operational flexibility with particularly low mechanical complexity. For this purpose, the electrical power of the generator is fed into a consumer system via the frequency converter. | 07-14-2011 |
| 20110227349 | METHOD FOR EXTRACTING BITUMEN AND/OR ULTRA-HEAVY OIL FROM AN UNDERGROUND DEPOSIT, ASSOCIATED INSTALLATION AND OPERATING METHOD FOR SAID INSTALLATION - A method for extracting bitumen and/or extra-heavy oil from an underground deposit is provided. The energy for producing the steam and for the electric heating is generated in situ, for which purpose part of the extracted bitumen and/or extra-heavy oil is burned in an industrial turbine with a downstream generator coupled to the turbine. The industrial turbine may be a gas turbine or a steam turbine. In particular the industrial turbine with downstream generator is assigned a waste heat recovery steam generator which serves for generating the steam and accordingly takes the form of a boiler. Through intermediate storage of the bitumen and/or ultra-heavy oil produced it is possible to implement a self-contained closed circuit which operates autonomously, independently of any external energy supply, using approx. 20% of the extracted bitumen and/or extra-heavy oil for the purposes of extraction. | 09-22-2011 |
| 20120091732 | POWER GENERATING APPARATUS WITH AN ANNULAR TURBINE - The present invention concerns a power generating apparatus for generating power from a fluid flowing in a pipe ( | 04-19-2012 |
| 20120211998 | COGENERATION FACILITY - A cogeneration facility for supplying buildings and facilities with thermal energy and electrical energy is located in a closed enclosure, which is permanently under negative pressure during operation, wherein the negative pressure in the enclosure is controlled by a partial exhaust-gas recirculation into an intake channel of an internal combustion engine and an additional external flow resister that is provided in the closed enclosure, and a frequency converter capable of backfeed is connected to the generator in an advantageous manner. Highly efficient heat recovery is achieved, wherein heat losses are substantially minimized and, in combination with the exhaust-gas recirculation and the frequency converter capable of backfeed, very high power modulation is achieved while the exhaust-gas pollutants such as CO, HC, and NO | 08-23-2012 |
| 20120223533 | METHOD AND SYSTEM FOR RENEWABLE ENERGY STORE IN TEMPERATURE-PRESSURE TANK OF ENERGY AND CONVERSION TO ELECTRICAL ENERGY - The subject of the invention is a method and system for renewable energy store in temperature-pressure tank of energy and conversion to electrical energy. It makes possible conversion of variable stream of renewable energy, especially of wind, tide and the sun, to constant stream of electrical energy. Considerable part of renewable energy stream is accumulated in substance in artificial or natural tank ( | 09-06-2012 |
| 20120326453 | ELECTRICITY GENERATION METHOD USING AN AIR GAS SEPARATION UNIT AND A COMBUSTION UNIT - For a plant comprising a gas/air separation unit supplying a boiler and a boiler-fed unit for compression and/or purification of CO2, the quantity of fumes sent to the compression and/or purification unit is modified according to the sale price of the electricity generated and/or the cost of venting the fumes. | 12-27-2012 |
| 20130134720 | WASTE HEAT UTILIZATION APPARATUS - A Rankine cycle circuit is constituted by an expander, which forms a fluid machine, a condenser, a gear pump, which forms a fluid machine, and a boiler. A discharge passage is connected to a discharge chamber of a pump chamber. A branch passage is connected to the discharge passage, and a restriction passage is provided at the end of the branch passage. The restriction passage is open to an internal space K in a generator housing. An outflow passage extends through a partition wall of a center housing member and a side plate. The internal space K in which an alternator is located communicates with an outlet chamber through the outflow passage. | 05-30-2013 |
| 20130221684 | METHOD AND APPARATUS FOR EFFICIENT FUEL CONSUMPTION - A method for efficient fuel consumption comprises recharging batteries or operating a device carrying out a task, with an engine through an electrical connection. The method also includes monitoring at least one of (i) current in the electrical connection, (ii) voltage of the batteries, and (iii) length of time of the recharging or task, to determine if the recharging has reach a preselected endpoint or the task has been completed. The method further includes generating a signal through a communication link to cause the engine to stop operating by: (a) preventing operation of a spark plug, (b) preventing delivery of fuel to the engine, or (c) preventing delivery of oxygen to the engine. | 08-29-2013 |
| 20140028033 | THERMAL CYCLE ENERGY AND PUMPING RECOVERY SYSTEM - Systems, methods, and apparatuses for pressure recovery and power generation may include a pressure recovery generator configured to receive a high-pressure fluid and generate current based on expansion of the high-pressure fluid. The current may be directed to a power electronics module that is configured to receive current from the pressure recovery generator and provide current to a closed-loop thermal cycle, such as an ORC. The current can be used to start components of the closed-loop thermal cycle, such as the pump and/or to black start the turbine generator. In some instances, the current can be combined with current generated by the closed-loop thermal cycle and directed to a utility grid or to external loads. The high-pressure fluid may be directed to heat exchanger components of the closed-loop cycle. For example, high-pressure, high-temperature fluid can be directed to an evaporator, while high-pressure, low-temperature fluid can be directed to a condenser. | 01-30-2014 |
| 20140062096 | HYBRID CONSTRUCTION MACHINE - Provided is a hybrid construction machine including: a hydraulic actuator; a hydraulic pump which discharges hydraulic fluid for driving the hydraulic actuator; a generator-motor which performs an electric generator action of generating electric power and an electric motor action of generating motive power; an engine connected to the hydraulic pump and the motor-generator; an electrical storage device; and a controller which causes the generator-motor to perform the electric generator action and charge the electrical storage device and causes the generator-motor to perform the electric motor action by electric power discharged from the electrical storage device to assist the engine. The controller causes the generator-motor to start the electric generator action when an engine output becomes equal to or greater than a predetermined engine lower limit output, and controls the electric generator action to keep the engine output no lower than the engine lower limit output. | 03-06-2014 |
| 20140062097 | POWER GENERATION SYSTEM - A power generation system is disclosed for supplying power to an electrical grid. The system comprises an engine ( | 03-06-2014 |
| 20140070545 | Method and device for operating a generator - A method for operating a generator for an internal combustion engine of a vehicle having a starting operating mode and a start-stop operating mode, a torque of the generator being delimited in the starting operating mode, including: detecting an operating mode of the vehicle, and deactivating a delimitation of the torque of the generator if the detected operating mode corresponds to the start-stop operating mode. | 03-13-2014 |
| 20140091579 | CONSTRUCTION MACHINE - A charge and discharge control unit ( | 04-03-2014 |
| 20140197644 | POWER SYSTEM - A power system may include a power generation component and a sensor configured to measure a parameter. The power system may also include a controller in communication with the power generation component and the sensor. The controller may be configured to run the power generation component in an exercise mode for a duration. The duration may be based on the measured parameter. | 07-17-2014 |
| 20140239645 | GENERATOR INCLUDING A FUEL SHUTOFF VALVE - A generator including an enclosure, an internal combustion engine provided within the enclosure, an alternator provided within the enclosure and driven by the internal combustion engine, a fuel supply line for providing fuel to the internal combustion engine, a valve for selectively closing the fuel supply line, the valve biased to a normally closed position, a controller configured to provide a signal to maintain the valve in an open position, and a temperature responsive device configured to interrupt the signal from the controller to the valve upon exposure to a threshold temperature, thereby resulting in the closing of the valve. | 08-28-2014 |
| 20140291993 | METHOD FOR OPERATING LEAN FUEL INTAKE GAS TURBINE ENGINE, AND GAS TURBINE POWER GENERATION DEVICE - A method for stably operating a lean fuel intake gas turbine engine by controlling the rotation speed of the lean fuel intake gas turbine engine for which it is difficult to control the rotation speed by controlling a fuel flow rate, is provided. In a method for operating a lean fuel intake gas turbine engine (GT) configured to use, as a fuel, a combustible component contained in a low-concentration methane gas to drive a power generator, a power converter ( | 10-02-2014 |
| 20140291994 | VEHICLE AND METHOD OF CONTROLLING VEHICLE - A vehicle includes a feeding system supplying an electric power to an external device disposed outside the vehicle, a controller controlling the operation of the feeding system, and an information output unit outputting predetermined information. The controller performs the processing of determining whether or not feeding can be performed from the feeding system to the external device. When the feeding from the feeding system to the external device is prohibited, the controller causes the information output unit to output prohibition information about the prohibition of the feeding including the contents of a determination processing. | 10-02-2014 |
| 20140312626 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - There is provided a control device for an internal combustion engine. An electricity generator is configured to be driven by the internal combustion engine. A battery is configured to store electricity generated by the electricity generator. A discharge amount detection section is configured to detect a discharge amount of the battery. An automatic stop control section is configured to automatically stop the internal combustion engine when the discharge amount is a first setting value or less. A continuous discharge amount detection section is configured to detect a continuous discharge amount of the battery based on the discharge amount. An automatic stop prohibition section is configured to prohibit an automatic stop when the continuous discharge amount is a second setting value or more, which is lower than the first setting value. | 10-23-2014 |
| 20140327248 | SYSTEM AND METHOD FOR OPERATING A DIESEL ENGINE - A power generating set includes an engine operable in response to a flow of fuel to produce a flow of exhaust gas. A generator is coupled to the engine and is operable in response to operation of the engine to produce a total electrical power, a primary load is electrically connected to the generator to receive a portion of the total electrical power, and a secondary load is selectively connected to the generator to receive a portion of the total electrical power. An insulated-gate bipolar transistor (IGBT) is positioned to selectively transition between a connected state and a disconnected state. The secondary load is connected to the generator when the IGBT is in the connected state and is disconnected from the generator when the IGBT is in the disconnected state. | 11-06-2014 |
| 20150048623 | METHOD FOR OPERATING AN ELECTRIC UNIT FOR A PUMPED-STORAGE POWER PLANT - A pump-storage power plant, such as an electric unit, for this purpose can include a rotating electric synchronous machine and a frequency converter as well as a method for operating the electric unit. An exemplary method provides that the frequency converter is used to start the turbine and an output of the electric machine is fed directly into the current network after start-up, for example. Another exemplary method provides that the frequency converter is used to start the pump and the pump is started directly from rest and under load of a flooded pump or a water column, for example. Another exemplary method provides that the electric machine is synchronised with a frequency of the current network and is operated synchronously with the current network independent of the operating state of the pump or the turbine and supplies active power and reactive power. | 02-19-2015 |
| 20150084346 | POWER GENERATION CONTROL SYSTEM, POWER GENERATION APPARATUS, AND CONTROL METHOD FOR RANKINE CYCLE SYSTEM - A power generation control system includes a converter and a controller. The converter controls a generator of a Rankine cycle system, the Rankine cycle system including an expander, the generator, which is interconnected to the expander, a pump which feeds a working fluid, and an evaporator which evaporates a working fluid. The controller causes the converter to execute, in at least one of a startup operation and a shutdown operation of the Rankine cycle system, first control in at least one of a startup operation and a shutdown operation of the Rankine cycle system such that the expander is prevented from expanding a working fluid if the working fluid at an outlet of the evaporator contains a liquid component while the pump is operating. | 03-26-2015 |
| 20150295469 | MAGNETIC GADOLINIUM PROPULSION GENERATOR - An electrical generator is provided. The electrical generator may include a shaft and a rotor. The rotor may be connected to the shaft and may rotate about the axis of the shaft. The present invention may further include a plurality of magnetic blocks and a plurality of attractant blocks. The plurality of attractant blocks may include a first set and a second set in an alternating arrangement. The attractant blocks may include gadolinium. Therefore, a temperature regulator may heat and cool the attractant blocks in order to rotate the rotor and produce energy. | 10-15-2015 |
| 20150318809 | VEHICLE AND CONTROL METHOD FOR VEHICLE - An ECU executes a program including: a step of setting a threshold β as a shutdown threshold when, during a power supply operation, a duration of a power supply stoppage exceeds a first time; a step of stopping an operation of an engine or prohibiting the engine from operating; and a step of executing system shutdown processing when an SOC of a storage apparatus falls to or below the shutdown threshold or the duration of the power supply stoppage exceeds a second time. | 11-05-2015 |
| 20150326159 | POWER SYSTEM THAT OPERATES IN AN EXERCISE MODE BASED ON MEASURED PARAMETERS - A power system may include a power generation component and a sensor configured to measure a parameter. The power system may also include a controller in communication with the power generation component and the sensor. The controller may be configured to run the power generation component in an exercise mode for a duration. The duration may be based on the measured parameter. | 11-12-2015 |
| 20150377164 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A control apparatus for an internal combustion engine is provided. The control apparatus includes an ECU. The ECU is configured to change, in a stepped manner, an air-fuel ratio of the internal combustion engine so as to change over a combustion mode of the internal combustion engine between lean combustion and stoichiometric combustion, when an operating point of the internal combustion engine satisfies a first changeover condition that is defined by a rotational speed and a torque of the internal combustion engine. The first changeover condition is defined by the rotational speed and the torque that correspond to a predetermined intake air amount at which a thermal efficiency of the internal combustion engine is maintained before and after changeover of the combustion mode. | 12-31-2015 |
| 20160160682 | SYSTEM AND METHOD TO MANAGE TRANSIENTS FOR RAPID POWER DEMAND CHANGES - An exemplary system may include a gas turbine engine configured to operate at an engine power level to satisfy an engine power demand. The system may also include at least one generator operatively coupled to the engine and configured to generate electrical power based at least in part on the engine power demand. The system further may include at least one heating element in communication with the at least one generator, and at least one control unit coupled to the at least one heating element. The at least one heating element may be configured to receive electrical power from the at least one generator to generate thermal energy. The at least one control unit may be configured to energize the heating element when the engine power demand is below the engine power level and/or there is an anticipated increase in the engine power demand. | 06-09-2016 |
| 20110025073 | Thermo-Electro-Acoustic Engine And Method Of Using Same - A thermo-electro-acoustic engine comprises a sealed body having a regenerator, hot and cold heat exchangers, an acoustic source, and an acoustic energy converter. An acoustic pressure wave is generated in a gas in the region of the regenerator. The converter converts a portion of the acoustic pressure into electrical energy. A portion of the electrical energy is used to drive the acoustic source. The acoustic source is controllably driven to produce acoustic energy which constructively adds to that of the acoustic pressure wave in the region of the regenerator. The remaining electrical energy produced by the converter is used external to the engine, such as to drive a load or for storage. The resonant frequency of the engine and the frequency of the energy output can be controlled electronically or electromechanically, and is not limited solely by the physical structure of the engine body and its elements. | 02-03-2011 |
| 20140265354 | GENERATOR SET ADAPTIVE DROOP CONTROL METHOD - A method of controlling a plurality of gensets during a failsafe condition is provided. The method may include operating one or more of the gensets according to a modified isochronous control scheme, and operating a remainder of the gensets according an adaptive droop control scheme. The modified isochronous control scheme may include varying the frequency of each isochronous genset with respect to load for lower-range loads and upper-range loads, and maintaining the frequency of each isochronous genset at nominal frequencies for mid-range loads. The adaptive droop control scheme may include adjusting the frequency of each droop genset to match the frequency of the isochronous gensets, and varying the load of each droop genset with respect to frequency for lower-range loads and upper-range loads. | 09-18-2014 |
| 20090206612 | Automated mobile power system - An automated mobile power system is capable of storing energy in electrical, hydraulic and pneumatic subsystems for driving a range of interchangeable tools. The system charges three storage means: electrical batteries for providing electrical energy, a hydraulic accumulator for providing hydraulic energy, and an air accumulator for providing pneumatic energy. A small diesel engine provides power to recharge each subsystem as needed. Between recharging cycles, the engine is shut down. A controller unit enables use of the apparatus in one of an automatic mode, which starts and stops the engine automatically based on a plurality of sensors that detect when a recharge is necessary, or a manual mode. The apparatus may also provide a heating unit capable of heating the work area. Preferably the apparatus is either mounted into a standard pick-up truck, service body, or flat-bed vehicle, or contained in a compact housing for easy transport. | 08-20-2009 |
| 20100244461 | SYSTEM FOR INCREASING ELECTRICAL OUTPUT POWER OF AN EXHAUST GAS TURBINE GENERATOR SYSTEM - A system for increasing electrical power includes an exhaust gas turbine, a generator, and a controller. The exhaust gas turbine is configured to be driven by exhaust gas from an engine. The generator is coupled to the exhaust gas turbine to produce electrical power for an electrical load. The controller is configured to increase the electrical power produced by the generator in response to a certain decrease in an electrical load voltage of the electrical load when the engine is at idle. The controller increases the electrical power by increasing a throughput of the exhaust gas through the exhaust gas turbine. | 09-30-2010 |
| 20140117677 | VEHICLE POWER SUPPLY SYSTEM - A vehicle power supply system includes a power monitor device that detects supply power from a battery and a generator to a home electrical appliance and a control unit that performs a supply power excess determination and a supply power variance determination using a detection value of the power monitor device when a driving of a vehicle is stopped to control a rotational speed of an engine according to determination results. | 05-01-2014 |
| 20080258474 | Engine starting control apparatus for hybrid vehicle - A control apparatus for a drive system of a hybrid vehicle including (a) an electrically controlled differential portion which has an engine, a first electric motor, and a differential mechanism operatively connected to the engine and the first electric motor and a differential state of which is controlled by controlling an operating state of the first electric motor, (b) a mechanical transmission portion constituting a part of a power transmitting path, and (c) a second electric motor connected to a power transmitting path between the electrically controlled differential portion and a drive wheel of the hybrid vehicle, the control apparatus including a control portion which is operable when a terminal portion of a shifting action of the mechanical transmission portion and a starting operation of the engine overlap each other, the control portion being configured to implement one of the shifting action and the starting operation prior to the other. | 10-23-2008 |
| 20080277945 | Protection techniques for a back-up electric power system - One embodiment of the present application is directed to a protection technique for a back-up electric power generation system. This system includes an electric power generator, generator control circuitry, electrical output sensors to provide one or more corresponding signals, electrical switching equipment to selectively couple the generator to an electrical load, and electric power feeder conductors to route electric power from the generator to the switching equipment. The control circuitry is responsive to the sensor signals to determine if a shut-down condition exists as a function of a protection profile determined for the system. This profile may account for damage thresholds of the generator, the feeder conductors, and the electrical switching equipment for each of a number of different combinations of level and duration of electrical output as represented by the sensor signals. | 11-13-2008 |
| 20080290666 | GENERATOR POWER PLANT PROTECTION SYSTEM AND METHOD - A typical power plant has a plurality of generators; at least one load; at least one bus interconnecting the generators and the at least one load. The plant is operated on an uncorrected droop configuration for speed control and voltage control. The plant further includes a monitoring module for monitoring at least one of a plurality of signals; a calculating module for calculating a fault based on a comparison of predefined values expected from normal droop operation with respect to monitored values obtained from the monitored signals; and a control module for providing an order to bring additional generating capacity on line, for tripping a generator if a fault has been identified with respect to a single generator or for tripping a tie breaker to provide bus to bus isolation if an identified fault cannot be isolated to a single generator. | 11-27-2008 |
| 20090058100 | Engine flare management system and method - A method of controlling an internal combustion engine during a start up phase, include cranking the internal combustion engine to initiate the start up phase and controlling an alternator load so as to increase load on the engine during at least a part of the start up phase, thereby to control engine speed flare and/or at least partially to recover energy used to start the internal combustion engine. | 03-05-2009 |
| 20090184522 | PERMANENT MAGNET ALTERNATOR SPEED DETECTION CIRCUIT WITH FEEDBACK AT LOWER SPEEDS - A permanent magnet alternator is driven by a turbine engine to supply three phases of power to a control circuit for the engine. A shunt regulator delivers current to the control circuit, and a voltage supply is also included to deliver power for a period of time as the alternator is gaining speed at startup. A speed detection circuit detects the speed of the shaft for diagnostic purposes and a feedback circuit overrides a control for the supply of the current at lower speeds such that the speed detection circuit will be accurate even at lower speeds. | 07-23-2009 |
| 20100013243 | Power Turbine Speed Control Using Electrical Load Following - A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool. | 01-21-2010 |
| 20100019507 | INVERTER GENERATOR - In an inverter generator having a generator unit driven by an internal combustion engine, an inverter that inverts converted direct current to alternating current with switching elements to supply to an electrical load, an inverter driver that comprises an microcomputer and drives the switching elements with a PWM signal to make the alternating current of a predetermined frequency, an ignition unit that ignites the engine, and an ignition controller that controls operation of the ignition unit, the engine speed is detected and it is determined whether the engine is under over revolution condition based on the detected engine speed. The inverter driver sends a command to the ignition controller to terminate the ignition to stop the engine, when the engine is under the over revolution condition, thereby enabling to prevent the engine from experiencing over revolution repeatedly. | 01-28-2010 |
| 20100066097 | METHOD TO ESTIMATE THE OUTPUT CURRENT OF AN AUTOMOTIVE GENERATOR (ALTERNATOR) - A control system of a vehicle comprises a current estimation module, a current sensor, and a current diagnostic module. The current estimation module determines an estimated output current of a generator of the vehicle based on an engine speed when the generator is operating in a steady-state condition. The current sensor measures an output current of the generator. The current diagnostic module diagnoses a condition of the current sensor based on the estimated output current and the measured output current. | 03-18-2010 |
| 20100066098 | CONTROLLING PROPELLER ROTOR OVERSPEED - An engine having at least one stage of propeller rotor blades, and a load, the at least one stage being associated with electrical generation means to generate electricity for the load. The load is switchable into a high load state in the event of an overspeed signal from the rotor blades. Also a method of controlling rotor overspeed of an engine, characterised by the steps of:
| 03-18-2010 |
| 20100109344 | Power system having transient control - A power system is disclosed. The power system may have an engine with a desired operating speed range, and a generator mechanically driven by the engine to produce electrical power directed to an external load. The power system may also have a power storage device associated with at least one of the engine and the generator, and a controller in communication with the engine and the power storage device. The controller may be configured to determine a speed of the engine deviating from the desired operating range, and to activate the power storage device to absorb or supplement at least a portion of the electrical power directed to the external load based on the determination. | 05-06-2010 |
| 20100164236 | ENGINE GENERATOR SET CONTROL - An engine generator set control system includes an engine, a generator, a frequency selection interface, a voltage regulator, and a controller. The engine includes a variable geometry turbocharger (VGT) and a crankshaft. The controller generates a signal indicative of a desired VGT configuration as a function of the selected frequency. | 07-01-2010 |
| 20100225122 | AUXILIARY POWER UNIT WITH DUAL USE OF SPEED SIGNALS - An auxiliary power unit has a speed sensor for sensing a speed of operation of the auxiliary power unit. The speed sensor sends a signal to an electronic control box. The electronic control box is operable to control the auxiliary power unit. A branch line is for communicating the speed signal to a health monitoring system. The branch passes through an electronic component that will isolate the speed signal as it passes beyond the component and to the downstream use, such that corruption at a downstream use will not pass back upstream to corrupt the signals used in the electronic control box. | 09-09-2010 |
| 20100320775 | CONTROL DEVICE AND METHOD OF A GAS TURBINE ELECTRIC ENERGY PRODUCTION PLANT - A control device of a gas turbine electric energy production plant, which delivers a power at a frequency presents power control means for controlling the power delivered by the plant according to a reference power value, and frequency control means, for determining correction values of the reference power value according to a frequency error, given by the difference between the plant frequency and a nominal frequency, which comprise integral control means configured to calculate the correction values and selectively activatable when the frequency error is beyond a first frequency range. | 12-23-2010 |
| 20110006547 | Method Of Controlling A Variable Speed Constant Frequency Generator - A method of controlling an engine-driven, electrical generator is provided. The generator generates an output voltage at a frequency with the engine running at an operating speed. The method includes the steps of connecting the generator to a load and varying the operating speed of the engine to optimize fuel consumption in response to the load. Thereafter, the frequency of the output voltage is modified to a predetermined level. | 01-13-2011 |
| 20120286523 | RECONFIGURABLE STATORS - A device includes a rotor and a stator with coils arranged to form a phase element. The phase element includes a first coil group including a first coil and a second coil and a second coil group including a third coil and a fourth coil, where the rotor is positioned between the first coil group and the second coil group. The device also includes one or more switches that enable reconfiguration of the phase element by switching an electrical configuration of the coils. In a first mode, the coils are arranged with the first coil in a first coil path and the second coil in a second coil path that is coupled in parallel with the first coil path. The coils are arranged such that a voltage generated across the first coil path is substantially equal to a voltage generated across the second coil path. | 11-15-2012 |
| 20140167423 | GENERATOR CONTROL SYSTEM FOR SMOOTH OPERATION WITH COMBUSION ENGINE - A combustion engine comprising at least a cylinder, a generator having a generator shaft with a generator shaft gear, a crankshaft having a crankshaft gear and a control unit, which controls at least the generator in such a way that it is possible to avoid a tooth flank change between the generator shaft gear and the crankshaft gear during an entire combustion cycle of the combustion engine. | 06-19-2014 |
| 20140183877 | PERMANENT MAGNET GENERATOR - A permanent magnet generator having the unique feature of a speed proportionally adjusted air gap for self-regulation of coil output voltage over a wide range of operating rotational speed of a steam turbine to which the invention is coupled. The Permanent Magnet Generator rotor is supported by the turbine end shaft and the stator is supported by a bracket bolted to the turbine pedestal base or other rigid structure. The speed proportional air gap is accomplished through the use of a plurality of centrifugal flyweights in mechanical coupling to a spool piece under spring load and to corresponding rare earth magnets via linkage such that increasing rotor speed extends the flyweights outward from the rotor center of rotation and draws the rare earth magnets closer to the rotor center of rotation and thus increases the air gap. | 07-03-2014 |
| 20150035287 | BLOCK LOADING OF GENERATOR SET - Method of operating a generator set, comprising a combustion engine with a drive shaft coupleable with a generator to supply electrical power, and at least one internal appliance coupleable to the drive shaft creating resistance to the drive shaft, particularly a fan, wherein a rotary speed of the drive shaft and/or a voltage and/or a frequency from the generator is monitored, wherein the resistance of the at least one internal appliance to the drive shaft is at least temporarily reduced when the rotation speed of the drive shaft and/or the voltage and/or the frequency from the generator drops below a predefinable threshold. | 02-05-2015 |
| 20150318810 | POWER GENERATION SYSTEM AND POWER GENERATION METHOD - A power generation system includes a medium circuit through which a medium is circulated; a circulation pump; an evaporator configured to heat the pressurized medium using heat of an external source so as to evaporate the medium, wherein the external source that the heat quantity is capable of fluctuating; an expander configured to be driven using the medium evaporated by the evaporator; a generator configured to be driven using the expander to generate power; and a flow rate control device configured to control the flow rate of the medium flowing into the expander such that, even when the heat quantity of the external source has fluctuated, the number of rotations of the expander or the generator is within a region in which the number of rotations is preset. | 11-05-2015 |
| 20080224478 | Control System for a Hybrid Electric Vehicle to Anticipate the Need for a Mode Change - A parallel hybrid electric vehicle method and system including an internal combustion engine (ICE), an electric traction motor/generator, and a controller. A control strategy is provided to prevent unpredicted or undesired engine starts by anticipating the need for the vehicle engine, while avoiding “false starting” the engine or allowing an annoying lag in performance that will occur if the engine is not started in advance of an actual requirement. The invention anticipates the need for engine starts and electromotive driving by monitoring vehicle speed and driver commands and their rates of change. The invention allows consistent performance and establishes seamless transitions between engine driving and electromotive driving. | 09-18-2008 |
| 20080238108 | Electronically Controlled Engine Generator Set - An electronically controlled electrical power generator comprises a generator ( | 10-02-2008 |
| 20080246285 | Vehicular system capable of suitably controlling engine speed and gear ratio according to battery charge state - A vehicular system includes a battery, an engine, an electric generator that is driven by the engine to generate electric power and thereby charge the battery, a first control apparatus that controls the battery and electric generator, a drive shaft, a CVT that transmits rotation of the engine to the drive shaft, and a second control apparatus that controls the engine and CVT. Further, the first control apparatus includes: means for detecting charge/discharge current of the battery; means for monitoring the SOC of the battery; means for informing, when there is a decrease in the SOC of the battery, the second control apparatus of the decrease in the SOC; means for setting a target charge current of the battery for recovering the decreased SOC; and means for controlling the electric generator to increase the amount of the electric power, thereby supplying the battery with the target charge current. | 10-09-2008 |
| 20080296908 | Hybrid vehicle and control method of the same - In the case where predetermined abnormality detection performed with operation of an engine, such as abnormality detection of a fuel system and an ignition system of the engine and various sensors, has not been completed (in the case where an abnormality detection completion flag F is zero), self-sustaining operation of the engine is performed to continue the operation (S | 12-04-2008 |
| 20080309093 | Power Output Apparatus, Control Method of Power Output Apparatus, and Vehicle Equipped with Power Output Apparatus - When an engine power demand Pe* is not greater than a maximum power Pemax, the drive control sets a target rotation speed Ne* and a target torque Te* of an engine according to a reference operation curve obtained in air-fuel ratio control with a stoichiometric air-fuel ratio (step S | 12-18-2008 |
| 20080309094 | Engine speed controller with total system integration for on-board vehicle power applications - The present invention provides a system and method for controlling the speed of a vehicle engine utilizing total system integration and an on-board power system for electrical power generation and distribution, which ensure that control of multiple components can be maintained, that critical operational parameters can be modified by generating calibration values, and that an electrical load can be met in both stationary and mobile vehicle applications. | 12-18-2008 |
| 20090015023 | Method for Controlling a Drivetrain and Drivetrain - A method for controlling a drivetrain for a road vehicle, in particular for a hybrid vehicle, is provided. The drivetrain includes at least an electric motor, an electric energy accumulator, and an active connection to at least one drivable axle. In the recuperation mode, thus, when an electric motor is operating as a generator for generating electric energy for charging an electric energy accumulator, the generated electric energy is transmitted at least partly to at least one electric heating resistor in order to convert the energy into heat. | 01-15-2009 |
| 20090026772 | Integrative Combined Vehicle Power Allotment Mechanism - An integrative combined vehicle power allotment mechanism includes an electric energy unit, an electric power control unit, an electric power unit, a heat power unit, an one-way clutch unit, a power allotment unit, and a speed change unit. The electric energy unit formed of a storage battery, the heat power unit formed of an internal combustion engine, and the one way clutch unit are disposed in different positions in the power allotment unit. Through dexterously designed energy management, the vehicle is driven with individual electric or mechanical power, or the combination thereof in a best condition so as to achieve the aim of energy saving. | 01-29-2009 |
| 20090273192 | Doubly fed axial flux induction generator - A doubly fed axial flux induction generator may include a prime mover configured to provide mechanical energy. The doubly fed axial flux induction generator may also include a rotor assembly coupled to the prime mover, wherein the prime mover is configured to rotate the rotor assembly. The doubly fed axial flux induction generator may further include a stator. The doubly fed axial flux induction generator may further include a power electronics module coupled to the rotor assembly and the stator, wherein the power electronics module is arranged in parallel with the prime mover, and is configured to assist with converting the mechanical energy into electrical energy, as well as with dispatching power between the prime mover and an energy storage device. The energy storage device may be coupled to the power electronics module, and may be configured to meet variations in power demand. | 11-05-2009 |
| 20100156117 | Genset power system having multiple modes of operation - A power system is disclosed. The power system may have an engine, a generator, a monitoring device configured to monitor the generator and to generate a signal, and a performance module configured to provide an alarm and a shutdown command to the engine based on the signal. The power system may further have a switching device with a first condition and a second condition. When the first condition of the switching device is active, the performance module may be overridden, the engine may be operated at a reduced speed and load output, and the generator may be inhibited from producing electrical power. When the second condition of the switching device is active, the performance module may affect operation of the power system, the engine may be operated at an elevated speed and load output, and the generator may be allowed to produce electrical power directed to the external load. | 06-24-2010 |
| 20100176606 | SYSTEM AND METHOD FOR FIXED FREQUENCY POWER GENERATION - A system for modulating a frequency output of a generator coupled to an electric distribution network is described herein. The system includes: a doubly-fed induction generator coupled to a power source selected from at least one of hydropower and fuel combustion, the generator providing an electrical power output having a first frequency based on a rotational speed of the generator; a controller for selecting the rotational speed of the generator; and a converter coupled to the generator for changing the frequency of the output to a selected value, in response to selecting the rotational speed. Methods for modulating a frequency output of a generator coupled to an electric distribution network are also described. | 07-15-2010 |
| 20100244460 | PORTABLE INVERTER POWER GENERATION APPARATUS - In a portable inverter power generation apparatus, a rectifying circuit converts AC electric power generated by an electric generator into DC electric power, and an inverter circuit converts the DC electric power into AC electric power. A current sensor detects an AC output current from the inverter circuit. In a first case where the AC output current detected by the current sensor increases from a value lower than a first value to a value higher than the first value, a computer sets a target rotational speed to a value lower than a resonance rotational speed at which an engine resonates until the AC output current detected by the current sensor increases to a second value higher than the first value, and sets the target rotational speed to a value higher than the resonance rotational speed when the detected AC output current increases to the second value. In a second case where the AC output current detected by the current sensor decreases from a value higher than the second value to a value lower than the second value, the computer unit sets the target rotational speed to a value higher than the resonance rotational speed until the AC output current detected by the current sensor decreases to the first value, and sets the target rotational speed to a value lower than the resonance rotational speed when the detected AC output current decreases to the first value. | 09-30-2010 |
| 20100270812 | Power Turbine Speed Control Using Electrical Load Following - A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool. | 10-28-2010 |
| 20110037276 | METHOD FOR CONTROLLING A GAS TURBINE IN A POWER STATION, AND A POWER STATION FOR CARRYING OUT THE METHOD - A method is provided for operating a gas turbine in a power station in which limits of the operating concept, which provide limits for optimization of the power station operation in respect of efficiency, service life consumption, emissions and power provision to the grid system, are adapted during operation. In particular, temperature limits and compressor inlet guide vane position limits are varied as a function of the optimization aims. A gas turbine power station is also provided for carrying out the method. | 02-17-2011 |
| 20110074165 | Welbore Rig Generator Engine Power Control - A system for controlling power load to a rig engine of a wellbore rig. The system includes a controller for controlling the rig engine, a sensor for sensing the exhaust temperature of the rig engine, the sensor in communication with the controller for providing to the controller signals indicative of the exhaust temperature. The controller maintains the power load to the rig engine based on the exhaust temperature. | 03-31-2011 |
| 20110260473 | METHOD FOR STANDBY GENERATOR RESTART AFTER FAULT SHUT-DOWN - A standby generator that includes a control unit that allows the standby generator to be automatically restarted upon termination of the generator operation due to a fault condition. The control unit of the standby generator monitors various conditions of the standby generator and terminates operation of the standby generator upon detection of any one of a plurality of fault conditions. After the generator operation has been terminated, the control unit determines whether the fault condition is one of a series of fault conditions that allows automatic restarting. If the fault condition allows for automatic restarting, the control unit monitors the status of the generator and will automatically restart the generator after removal of the fault condition. | 10-27-2011 |
| 20120139265 | INVERTER GENERATOR - An inverter generator used in combination with a motor and an ECU generating a pulse at each predetermined rotation angle of the motor is comprised of: an electric generator driven by the motor configured to generate alternating current electric power; estimating means for estimating an electrical angle of alternating voltage of the alternating current electric power from the pulse, the estimating means being electrically connected with the ECU; a converter configured to convert the alternating current electric power into direct current electric power, the converter electrically connected with the electric generator and the estimating means; and an inverter configured to convert the direct current electric power into alternating current output electric power, the inverter electrically connected with the converter. | 06-07-2012 |
| 20120161452 | Switched Reluctance Generator Priming Strategy - A method of priming a common bus ( | 06-28-2012 |
| 20140183878 | ELECTRIC POWER GENERATION CONTROL DEVICE AND ELECTRIC POWER GENERATION CONTROL SYSTEM - An ECU in an electric power generation control system obtains a vehicle state containing a battery state and a driving state of a motor vehicle. The ECU calculates charging parameters necessary for maintaining a residual charge of a battery and vibration suppression parameters necessary for suppressing vibration of a vehicle. An exciting current setting section as a function of the ECU determines an exciting current flowing in an excitation winding of an alternator on the basis of the charging parameters and the vibration suppression parameters. | 07-03-2014 |
| 20140246867 | AIR-POWERED GENERATOR SYSTEM WITH ELECTROMAGNETIC AUXILIARY POWER UNIT - A generator system uses compressed air as a power source and utilizes an electromagnetic auxiliary power unit. The generator system includes an engine ( | 09-04-2014 |
| 20150021925 | METHOD TO CONTROL TEMPERATURE OF ENGINE OF GENERATOR SYSTEM - A method to control temperature of an engine of a generator system during a load test is provided. The generator system includes a generator, one of a liquid load bank and an air resistive load bank, a reversible fan, and a heat exchanger. The method includes heating of the engine to a pre-determined temperature with heat supplied by the liquid load bank and the reversible fan or by the air resistive load bank via the reversible fan. | 01-22-2015 |
| 20150042103 | LIFING AND PERFORMANCE OPTIMIZATION LIMIT MANAGEMENT FOR TURBINE ENGINE - A control for a multi-shaft turbine engine system using electrical machines seeks optimal system performance while accommodating hard and soft component limits. To accommodate the component limits, the control may generate a number of possible operating point options reflecting potential trade-offs in performance, lifing, efficiency, or other objectives. | 02-12-2015 |
| 20150357952 | METHOD AND SYSTEM OF TRACKING THE MAXIMUM EFFICIENCY OF A VARIABLE SPEED ENGINE-GENERATOR SET - A generator system including an engine and an electrical generator. An electronic control unit configured to monitor and control the engine and generator is provided. The electronic control unit is configured to monitor the electrical load being supplied by the generator and to determine whether the load has remained within a predetermined range for a predetermined period of time. The electronic control unit is configured to adjust the speed of the engine by a predetermined amount when the load has been determined to have remained within the predetermined range for a predetermined length of time. The electronic control unit is configured to compare the present rate of fuel consumption for the adjusted speed to a stored value for the rate of fuel consumption corresponding to the present electrical load being applied to the generator and subsequently update the stored value for engine speed based on the results of the comparison. | 12-10-2015 |
| 20160160754 | Controller for Free Piston Generator - A controller for a free piston generator that is capable of more accurately controlling the behavior of a piston than conventional controllers is provided. During power generation of a free piston generator | 06-09-2016 |
| 20160254768 | GENSET ENGINE USING ELECTRICAL SENSING TO CONTROL COMPONENTS FOR OPTIMIZED PERFORMANCE | 09-01-2016 |
| 20080211237 | ELECTRICAL POWER SUPPLY FOR AN AIRCRAFT - A main generator delivers an AC voltage to an electricity network on board an aircraft via a main line having at least one line contactor mounted therein, the voltage being regulated by a regulator. An engine electricity network delivers electricity to various loads situated in the zone of an engine fitted to the aircraft and to an engine control computer, the engine electricity network having a first fed input connected to the main electricity power supply line via a secondary electricity power supply line, upstream from the line contactor in order to receive directly electricity derived from the main generator without transiting via the electricity network on board the aircraft. The voltage regulator regulating the voltage delivered by the main generator may be situated in the engine zone and is powered by the engine electricity network. | 09-04-2008 |
| 20090001732 | Generator Voltage Stabilization System and Method - A generator voltage stabilization system of a heavy-duty vehicle hybrid-electric drive system, which has an engine and a generator coupled with the engine for generating power that varies with rotational speed of the engine, includes one or more circuits having at least one of a DC/DC converter and an DC/AC converter configured to be coupled to the generator, and receive varying power input from the generator and provide stabilized voltage output power; and a control computer coupled to the one or more circuits to control the one or more circuits to provide stabilized voltage output power with varying power input from the generator. | 01-01-2009 |
| 20090121496 | Power control system and method - A power control system comprises a prime mover and a generator driven by the prime mover. A control device is coupled with the prime mover and the generator wherein the control device ascertains a power level of the generator and varies an output power of the prime mover according to the power level. The control device measures a duty cycle of a generator output power controller to ascertain the generator power level and generates a signal to a prime mover controller so that the generator duty cycle remains within a pre-determined range. The power control system may include a transmission wherein the control device operation may be conditioned on a state of the transmission. The power control system may include a speed converter coupled with the prime mover wherein the control device converts a speed of the prime mover according to the generator power level. The control device may operate to control an output power of the generator concurrently with controlling the output power of the prime mover. | 05-14-2009 |
| 20090236860 | GENERATOR SET - A generator system for a portable, residential or small business generator includes an engine, an alternator, a continuously variable transmission pulley system and a governor. The engine includes a drive shaft and a throttle. The alternator includes a rotor disposed on a rotor shaft. The continuously variable transmission pulley system includes a drive pulley coupled to the drive shaft, a driven pulley coupled to the rotor shaft, and a belt configured to engage the drive pulley and the driven pulley. The governor adjusts the engine throttle to control the speed of the engine in response to a speed of the rotor shaft. | 09-24-2009 |
| 20090250943 | SYSTEMS AND METHODS INVOLVING OPERATING VARIABLE SPEED GENERATORS - A method for operating an asynchronous generator comprising receiving an indication that a power grid frequency is reduced. Responsive to the receiving the indication, reducing a speed of the asynchronous generator from a first speed to a second speed for a first time period, wherein the reduction of the speed of the asynchronous generator results in a momentary increase in a total power output of the asynchronous generator. Increasing the speed of the asynchronous generator from the second speed to a third speed responsive to the end of the first time period. | 10-08-2009 |
| 20090261599 | Power generation system - A power generation system including an engine and an electrical generator driven to rotate at rotational speed by the engine. The generator is configured to supply an adjustable amount of required electrical power having a voltage and a current to at least one electrical load. The system also includes a controller configured to adjust at least one operating parameter of the engine in order to maximize efficiency of the system. The system efficiency is a measure of the combined operation of generator and engine and load for a given load condition. The controller is configured to maximize system efficiency based only upon the required electrical power being supplied by the generator. The controller is configured so that the controller does not independently consider any one of the rotational speed, the voltage or the current being supplied by the generator when adjusting the at least one operating parameter. | 10-22-2009 |
| 20090267353 | CAPACITOR-COMPENSATION-TYPE GENERATOR - In a capacitor-compensation-type generator having a rotor wound with a field winding, a stator wound with an output winding adapted to cross flux generated by the field winding to output AC power, and an internal combustion engine that drives the rotor to rotate relative to the stator, there are equipped with an actuator that changes the engine speed and an actuator controller that controls operation of the actuator in accordance with a constant voltage operation mode in which the engine speed is controlled to a desired speed such that a detected output voltage becomes a desired voltage, or a constant frequency operation mode in which the detected engine speed is controlled to a predetermined speed such that frequency of AC power outputted from the output winding becomes a desired frequency, thereby enabling to output AC power at constant voltage or frequency. | 10-29-2009 |
| 20090278362 | CYCLOCONVERTER GENERATOR - In a cycloconverter generator, AC power required by the load is detected and a desired speed of the engine is determined based on the required AC power, operation of an actuator is controlled such that the engine speed becomes equal to the desired engine speed, and the required AC power is generated by turning on switching elements (thyristors) such that a number of the phase signal within one period of frequency of the AC power, becomes equal to a number determined by the desired engine speed, thereby preventing undesirable increase in fuel consumption and noise by operating the engine at a speed corresponding to required AC power and enabling to generate stable AC power even when the engine speed changes abruptly. | 11-12-2009 |
| 20090302616 | Electric power generation system controlled to reduce perception of operational changes - An electric power system includes an engine, a generator driven by the engine, an electrical energy storage device, power control circuitry coupling the generator and storage device together, and a processor coupled to the circuitry. The generator provides variable AC power and the storage device provides variable DC power to the circuitry. The processor executes operating logic to provide control signals to the circuitry to operate the generator at a first speed to provide a first level of AC electricity, increase the DC power provided from the storage device to increase the AC electricity to a second level, increase operating speed of the generator from the first speed to a second speed greater than the first speed, decrease the DC power from the storage device as the operating speed of the generator increases, and limit acceleration of the operating speed to reduce perception of a speed change. | 12-10-2009 |
| 20100019508 | INVERTER GENERATOR - In an inverter generator, having a generator unit driven by an internal combustion engine whose throttle valve is moved by an actuator and generates alternating current, and an inverter that converts converted direct current to alternating current with switching elements to supply to an electrical load, voltage and current supplied to the electrical load is detected, a power factor is calculated from the detected voltage and the current, a power of the load is estimated from the detected current and the calculated power factor. Then a desired speed of the engine is determined based on the estimated power of the load, and the actuator is controlled such that an engine speed becomes equal to the desired engine speed, thereby improving the response of engine speed control. | 01-28-2010 |
| 20100032964 | METHOD FOR OPERATING A POWER PLANT - A method is provided for operating a power station ( | 02-11-2010 |
| 20100090478 | Power control system and method - A power control system comprises a prime mover and a generator driven by the prime mover. A control device is coupled with the prime mover and the generator wherein the control device ascertains a power level of the generator and varies an output power of the prime mover according to the power level. The control device measures a duty cycle of a generator output power controller to ascertain the generator power level and generates a signal to a prime mover controller so that the generator duty cycle remains within a pre-determined range. The power control system may include a transmission wherein the control device operation maybe conditioned on a state of the transmission. The power control system may include a speed converter coupled with the prime mover wherein the control device converts a speed of the prime mover according to the generator power level. The control device may operate to control an output power of the generator concurrently with controlling the output power of the prime mover. | 04-15-2010 |
| 20100096862 | Power control system and method - A power control system comprises a prime mover and a generator driven by the prime mover. A control device is coupled with the prime mover and the generator wherein the control device ascertains a power level of the generator and varies an output power of the prime mover according to the power level. The control device measures a duty cycle of a generator output power controller to ascertain the generator power level and generates a signal to a prime mover controller so that the generator duty cycle remains within a pre-determined range. The power control system may include a transmission wherein the control device operation maybe conditioned on a state of the transmission. The power control system may include a speed converter coupled with the prime mover wherein the control device converts a speed of the prime mover according to the generator power level. The control device may operate to control an output power of the generator concurrently with controlling the output power of the prime mover. | 04-22-2010 |
| 20100194118 | ENGINE-DRIVEN GENERATOR SPEED CONTROL SYSTEM AND METHOD - A system and method are provided for controlling an internal combustion engine driving a generator/welder or a stand-alone generator. Controlling the engine may include altering the engine speed based upon a detected demand on the generator and/or operating parameters of a welder. For example, the engine speed may be increased based on a detected draw on the generator and/or the operating parameters of the welder. In addition, the engine speed may be automatically decreased to a non-standard idle speed or the engine may be automatically turned off if no demand is detected for a period of time. Additionally, the engine speed may be increased if only frequency-insensitive demands are detected on the generator. Combinations of these and further methods may be executed. Various devices are provided for implementing the above methods. | 08-05-2010 |
| 20100289272 | Method of Extension of the Regulation Range of Electric Power Supplied to the Electricity Grid and an Energy System with an Extended Regulation Range - The present invention deals with a method and energy system of extension of the electric power regulation range in which electricity produced by an electricity or electricity and heat production source can be supplied in the place of connection to the electricity grid, wherein the regulation range of the source is limited by the maximum installed electric output at the top and the minimum electric output of the source at which it is still possible to operate the source in a stable way at the bottom. According to the invention, before the place of connection to the electricity grid, an electric appliance is installed to the source that will reduce the electric output in the place of connection to the electricity grid below the minimum electric output of the source through its own consumption in the case of demand, extending thus the regulation range of the electric output that can be supplied to the electricity grid in the place of connection as compared to the regulation range of the source alone. | 11-18-2010 |
| 20100289273 | TWO SPEED CONTROL FOR MOBILE REFRIGERATION GENERATORS - A current sensor is installed in a generator set to measure the current being delivered from the generator set to a refrigeration unit. A control is responsive to the current transformer to reduce the speed of the drive engine to a lower speed when the current being delivered to the refrigeration unit is determined to be below a predetermined higher level. Provision is made to override the system when the sensed current is determined to be transient caused or in the event that ambient temperature is determined to be above a predetermined temperature threshold. | 11-18-2010 |
| 20110001324 | System and Method for Gas Turbine Chilled Water Storage Discharge Control and/or Gas Turbine Output Control - Variable speed drive controlled discharge pumps are used for pumping chilled water from a chilled water storage tank to coils operatively associated with the air inlet of a gas turbine, wherein the gas turbine is used to generate electricity. Use of the variable speed drive controlled discharge pumps aids is protecting the temperature distribution in the chilled water storage tank so that a thermocline rises with the addition of chilled water during charging of the tank with chilled water, and lowers during discharge of the tank when using the chilled water to cool inlet air at one or more gas turbines operated at a facility. | 01-06-2011 |
| 20110156408 | Method and Device for Controlling a Steam Power Plant - A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second signal after a predetermined time period and blocking the second signal for a predetermined period of time, stopping and subsequently starting the turbine as a function of the second signal, generating a third signal showing a load rejection as a function of the first signal, and permanently stopping the turbine as a function of the third signal. A device for controlling a steam power plant is also provided. | 06-30-2011 |
| 20110175372 | ADAPTIVE CONTROL OF AN ELECTRICAL GENERATOR SET BASED ON LOAD MAGNITUDE - A generator set includes an internal combustion engine and a generator driven by the engine. The generator provides electricity to a plurality of loads, each of which is selectively connected to the generator by a switch. The generator set is controlled by a method that includes receiving a command to connect a given load to the generator. In response to that command, a throttle of the engine is changed to a transition throttle position and an transition excitation voltage is applied to the generator. Then the switch is operated to connect the given load to the generator. Thereafter, in response to a defined event occurring, the throttle is changed to a normal position and a normal excitation voltage is applied to the generator. | 07-21-2011 |
| 20110304159 | Method for stabilization of the network frequency of an electrical power network - A method for stabilizing the network frequency of an electrical power network is provided. The network includes at least a two-shaft gas turbine which includes power turbine and a gas generator, wherein the power turbine is connected to a first generator by means of a shaft in a torque transferring manner. Also, an assembly for carrying out the method is provided. The first shaft of the power turbine and the first generator turn permanently synchronized with the power network and the first generator drives the rotation as a motor and a second shaft of the gas generator permanently turns at an ignition speed, wherein the gas generator is ignited upon a power demand and the power turbine is driven by the created hot gas of the gas generator, such that the first generator creates power. | 12-15-2011 |
| 20120056436 | SYSTEM AND METHOD TO INCREASE THE OVERALL SYSTEM EFFICIENCY OF INTERNAL COMBUSTION BASED ELECTRIC GENERATORS - Disclosed are systems and methods to generate backup and remote electrical power, including operating an internal combustion engine to rotate a standard electrical generator. This approach can be based on a variety of engine types such as but not limited to diesel, gasoline, turbine and many other engine types. Each of these technologies have respective efficiency curves based on engine speed, load and many other factors. Often the maximum efficiency point is not the current load demand of the generator system. The disclosed systems and methods are directed to enabling the various generator sets to operate at or near their peak efficiency while they are running, thereby improving the overall efficiency of the generator systems. | 03-08-2012 |
| 20120086220 | ENERGY SYSTEM FOR HEAVY EQUIPMENT - An energy system for heavy equipment having an actuator for operating a tool includes a bus, an engine, a generator, an energy storage device, and a controller. The bus is for providing electricity to the actuator as a function of operation of the tool. The engine is for providing a power output and the generator is coupled to the engine and configured to provide electricity to the bus. The energy storage device is configured to receive electricity from the bus for storage of energy, and is further configured to provide electricity to the bus to supplement the electricity provided by the generator. The controller is configured to change the power output of the engine as a function of electrical demand on the bus. In response to a change in the electrical demand, the controller is configured to change the power output of the engine at a rate that is less than a maximum capability of the engine. | 04-12-2012 |
| 20120104770 | REGENERATIVE POWER CHARGING FOR ELECTRICITY GENERATION SYSTEMS - An electricity generation system includes a generator, which comprises a rotor and a stator. Rotation of the rotor relative to the stator causes the generator to generate electricity. The rotational speed of the rotor is proportional to the power of the generated electricity. An excess power monitor is provided for determining when the power of the electricity generated by the generator exceeds a power demand. An energy regenerator is coupled to the excess power monitor. The excess power monitor diverts excess power to the energy regenerator when the power of the electricity generated by the generator exceeds the power demand. The energy regenerator converts the excess power into potential energy. The potential energy is stored in an energy storage coupled to the energy regenerator. The energy regenerator may be an air compressor and the energy storage may be one or more compressed air canister. Alternatively the energy regenerator may be a battery charger and the energy storage may be one or more battery. One or more additional flywheel may be coupled to the rotor of the generator to increase the rotational momentum (kinetic energy) of the rotor. | 05-03-2012 |
| 20120119518 | AUXILIARY GAS TURBINE ENGINE ASSEMBLY, AIRCRAFT COMPONENT AND CONTROLLER - A non-aircraft-propelling auxiliary gas turbine engine assembly includes an auxiliary gas turbine engine and a mixing damper. The auxiliary engine and the mixing damper are installable in an aircraft having at least one aircraft-propelling main gas turbine engine. The auxiliary engine includes a compressor having a compressor inlet. The mixing damper has first and second inlets and has an outlet. The outlet is fluidly connectable to the compressor inlet. The first and second inlets are adapted to receive first and second gas streams which have been compressed by at least one main engine. An aircraft component includes a mixing damper. A controller includes a program which instructs the controller to increase/decrease a first gas stream in response to increasing/decreasing electrical demands on an electric generator operatively connected to an auxiliary gas turbine engine of an aircraft. | 05-17-2012 |
| 20120139264 | PROTECTION ARRANGEMENT OF AN ELECTRIC POWER SYSTEM - The inventive protection arrangement of an electric power system comprises a relay arrangement ( | 06-07-2012 |
| 20120153639 | METHOD FOR PROVIDING AUXILIARY POWER TO AN ELECTRIC POWER PLANT USING FISCHER-TROPSCH TECHNOLOGY - A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates. | 06-21-2012 |
| 20120223532 | STEAM TURBINE PLANT - A single shaft steam turbine plant is disclosed with a first and a second low pressure steam turbine located at either end of the shaft. A generator and at least one high-pressure steam turbine are located on the shaft between low pressure steam turbines. | 09-06-2012 |
| 20120261927 | POWER TRANSFER SYSTEM FOR A GENERATOR - A system for transferring power includes an internal combustion engine and a generator driven by the engine. The system further includes a primary conductor coupled to the generator and a secondary conductor. The secondary conductor is physically independent from the primary conductor and configured to receive energy from the primary conductor through induction. | 10-18-2012 |
| 20120280518 | Power Generation Systems - A power generation system is provided that includes an internal combustion engine configured to provide rotational mechanical energy. A generator is configured to receive the rotational mechanical energy and generate electrical power in response to the rotational mechanical energy. A fluid medium is provided to the internal combustion engine and to the generator for removing thermal energy from the internal combustion engine and from the generator. | 11-08-2012 |
| 20120286524 | POWER SYSTEM - A power system includes a Rankine cycle local generator having a capacity greater than a maximum anticipated power level. One or more control devices are operatively connected to the local generator for regulating active and reactive power generated by the generator. Detectors are provided to sense active and reactive voltages. The controller directs the control devices to regulate the generator such that the active power and reactive power are sufficient to satisfy the active and reactive load conditions. | 11-15-2012 |
| 20120292920 | INVERTER GENERATOR CONTROL APPARATUS - In a control apparatus for an inverter generator having a generator unit driven by an engine, a converter connected to the generator unit to convert an alternating current from the generator unit to a direct current, and an inverter connected to the converter to invert the direct current from the converter to an alternating current and output it to an electric load, it is configured to detect an overload condition based on the alternating current from the inverter to the electric load; stop outputting from the inverter to the electric load with the engine being kept operating when the overload condition is detected; output a release command to release a stop condition where the outputting to the electric load is stopped upon manipulation by an operator; and restart the outputting to the electric load by releasing the stop condition when the release command is outputted. | 11-22-2012 |
| 20120292921 | STATIONARY POWER PLANT - The invention relates to a method for operating a stationary power plant, wherein a fuel/air mixture is burned in an internal combustion engine and wherein the internal combustion engine drives an alternating current generator, which is connected to an energy supply network and provides energy to the energy supply network, wherein if the actual rotational speed of the alternating current generator or of the internal combustion engine exceeds a predefinable maximum value due to a failure of the energy supply network, the combustion in the internal combustion engine is stopped at least partially, while the connection to the energy supply network is maintained. | 11-22-2012 |
| 20120299311 | ORGANIC RANKINE CYCLE (ORC) LOAD FOLLOWING POWER GENERATION SYSTEM AND METHOD OF OPERATION - A system for producing power using an organic Rankine cycle (ORC) includes a turbine, a generator, an evaporator, an electric heater, an inverter system and an organic Rankine cycle (ORC) voltage regulator. The turbine is coupled to the generator for producing electric power. The evaporator is upstream of the turbine and the electric heater is upstream of the evaporator. The evaporator provides a vaporized organic fluid to the turbine. The electric heater heats the organic fluid prior to the evaporator. The inverter system is coupled to the generator. The inverter system transfers electric power from the generator to a load. The ORC voltage regulator is coupled to the inverter system and to the electric heater and it diverts excess electrical power from the inverter system to the electric heater. | 11-29-2012 |
| 20120306218 | Managed pneumatic turbine power supply - A pneumatic turbine power supply including a pneumatic turbine, a rectifier circuit for converting the AC power output by the pneumatic turbine to DC power, a voltage regulator for maintaining a constant voltage and a battery. The pneumatic turbine further provides a rotor blade containing a disc with magnets that are turned between a plurality of stator windings, the turning caused by a leakage that engages the rotor blades, the leakage from the emergency air brake reservoir found on rolling stock. The pneumatic turbine power supply further provides DC power output to both a device and a battery. The pneumatic turbine may operate despite a loss of pneumatic air pressure found in the brake pipe of the rolling stock. | 12-06-2012 |
| 20120326452 | Stall Controller And Triggering Condition Control Features For A Wind Turbine - Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation. | 12-27-2012 |
| 20130038072 | SYSTEM AND METHOD FOR HOT AMBIENT AND GRID FREQUENCY COMPENSATION FOR A GAS TURBINE - Systems and methods for controlling a gas turbine are disclosed. The gas turbine can include a compressor oversized in airflow capacity and one or variable blade rows to control the airflow into the compressor. The position of the variable blade rows can be controlled according to a nominal variable blade row schedule that is defined to throttle down the variable blade rows to provide nominal flow into the compressor. The positions of the variable blade rows can be adjusted from the nominal positions set forth in the variable blade row schedule pursuant to a request to operate the gas turbine system in either a controlled output mode or in a frequency compensation mode. | 02-14-2013 |
| 20130043690 | GENERATION PLANT CONTROL APPARATUS AND METHOD - A method of controlling an output of a generation plant ( | 02-21-2013 |
| 20130082468 | LOAD PROTECTION SYSTEM FOR A TURBINE - A load protection system for a turbine is provided. The turbine has a load floor representing a lowest allowable load the turbine generally operates above. The turbine supplies power to an electrical grid. The grid has a grid frequency where as the grid frequency increases the turbine sheds load. The load protection system includes a controller in communication with the turbine and the electrical grid. The controller has a memory for storing a commanded target turbine load. The commanded target turbine load is the load the turbine operates at the load floor. The controller includes control logic for sending a flag to a variable rate limiter and a commanded load control block. The variable rate limiter and the commanded load control block generally prevent the turbine from shedding load and operating below the load floor once the flag is received. | 04-04-2013 |
| 20130099508 | METHODS FOR USING A CARBON DIOXIDE CAPTURE SYSTEM AS AN OPERATING RESERVE - A method of controlling a power system includes monitoring a load on an electrical grid, monitoring a power generation from one or more power producers connected to the electrical grid, wherein at least one of the one or more power producers is a power plant including a carbon dioxide capture system, and utilizing the carbon dioxide capture system of the one or more power producers as a operating reserve in response to an increase in the load on the electrical grid or a reduction in the power generation from one or more power producers connected to the electrical grid. | 04-25-2013 |
| 20130106118 | METHOD FOR MONITORING AND CONTROLLING ENGINE SPEED | 05-02-2013 |
| 20130147208 | GAS TURBINE CONTROL DEVICE AND GENERATING SYSTEM - Provided is a gas turbine control device that is used in a generating facility including a gas turbine and a generator for generating power when at least rotational power of the gas turbine is transmitted, the gas turbine control device including a first control section for obtaining a first fuel control command for causing generator output to follow a generator output set value decided based on a demand load, where the first control section has a feedback control section ( | 06-13-2013 |
| 20130154281 | BATTERY SAVING IDLE BUMP WORK MODE - An electronic control unit for increasing electrical output from an alternator connected to a variable displacement engine having a plurality of selectively controllable cylinders, the electronic control unit is adapted to determine whether the variable displacement engine is idling, evaluate a present electrical system load; and when the present electrical system load exceeds a present electrical output from the alternator, deactivate at least one of the plurality of cylinders and increase an idle speed of the variable displacement engine. A corresponding method is also disclosed. | 06-20-2013 |
| 20140001770 | MULTIPLE-FREQUENCY INVERSION METHOD AND CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE DRIVEN GENERATOR | 01-02-2014 |
| 20140015257 | GENERATOR - An electric power generation system including an engine, an electrical generator, and a system controller. The engine is configured to produce mechanical power and includes an engine controller and a turbocharger for raising air pressure to a boost pressure. The turbocharger is controlled by the engine controller during steady state operation of the system. The electrical generator is mechanically connected to the engine and converts mechanical power into electrical power. The system controller is configured to receive a signal indicative of an electrical load on the generator. During a transient condition during which the electrical load increases, the system controller is configured to directly control the turbocharger in order to change the configuration of the turbocharger in order to increase boost pressure. | 01-16-2014 |
| 20140054902 | ENGINE CONTROL DEVICE OF WORK MACHINE AND ENGINE CONTROL METHOD THEREFOR - An engine control device is provided including: detection units for detecting a driving state of a work machine using a generator, target engine speed setting units for causing, on the basis of the driving state, a target engine speed set for a case where electric power generation by the generator is OFF to be the same as a target engine speed set for a case where the electric power generation by the generator is ON, and engine target output calculation units for calculating an engine target output during electric power generation OFF that can be output at most when the electric power generation by the generator is OFF, and calculates an engine target output obtained by adding an output corresponding to an electric power generation amount by the generator to the engine target output when the electric power generation by the generator is ON. | 02-27-2014 |
| 20140145452 | METHOD AND DEVICE FOR PRIMARY FREQUENCY REGULATION BASED ON BANG-BANG CONTROL - The present invention provides a method and a device for primary frequency regulation based on bang-bang control, the method comprises: obtaining in real-time a power grid frequency of a steam turbine generator set; performing a subtraction operation on a rated power grid frequency and said power grid frequency to generate a power grid frequency difference; performing a dead zone process on the power grid frequency difference according to a dead zone fixed value to generate a frequency difference; performing a frequency difference compensation operation on the frequency difference to generate a frequency difference compensation instruction; and combining an original primary frequency regulation output instruction with the frequency difference compensation instruction and outputting the result to a steam turbine speed regulation system when a selecting switch is 1. | 05-29-2014 |
| 20140210217 | Gas Turbine Under Frequency Response Improvement System and Method - A system and method is provided that improves the under frequency response of gas turbines by providing a fast-response power augmentation system. The system includes a tank storing a blended mixture of motive fuel such as ethanol or methanol and demineralized water in a predetermined ratio that is provided as a diluent to be injected into the compressor bellmouth, the Compressor Discharge Chamber (CDC), and/or the combustion system via one to three dedicated circuits. To achieve the instantaneous injection of the diluent at the correct pressure and for the appropriate duration to meet the needs of the gas turbine Grid compliance mandate, an accumulator is used as the motive force to drive the augmentation fluid in the dedicated circuits. The injected diluent is microprocessor controlled to either be simultaneous into all three circuits or is sequenced based on a determination of the best turbine control and performance. | 07-31-2014 |
| 20140217746 | METHOD FOR REGULATING THE OPERATION OF A GENERATOR SET - The present invention relates to a method for regulating the injection of fuel into a combustion engine of an electric generator set including an alternator driven by the electric motor, the electric generator set including at least one sensor sensing the speed of the combustion engine and using a control loop having at least at input a signal coming from the sensor, the method involving the following steps: detecting an increase in load on the output side of the alternator from at least one electrical quantity on the output side of the alternator and, when an increase in load is detected, substituting at least one predefined value for at least one value delivered by the speed sensor at input to the control loop. | 08-07-2014 |
| 20140265353 | ADAPTIVE VARIABLE SPEED GENSET CONTROL - A method of determining an optimal operating speed of a variable speed genset is provided. The method may include determining whether an actual operating speed of the genset approximates a desired operating speed, the desired operating speed being predetermined based on a measured load value associated with the genset, the desired operating speed being associated with an applied offset value that is adjustable between a minimum offset value and a maximum offset value; incrementing the applied offset value of the desired operating speed to decrease the actual operating speed if the actual operating speed approximates the desired operating speed, and the applied offset value is less than the maximum offset value; and determining the desired operating speed as the optimal operating speed if the actual operating speed approximates the desired operating speed, and the applied offset value is equal to the maximum offset value. | 09-18-2014 |
| 20150014998 | METHOD AND APPARATUS FOR EFFICIENT FUEL CONSUMPTION - A method for efficient fuel consumption comprises recharging batteries or operating a device carrying out a task, with an engine through an electrical connection. The method also includes monitoring at least one of (i) current in the electrical connection, (ii) voltage of the batteries, and (iii) length of time of the recharging or task, to determine if the recharging has reach a preselected endpoint or the task has been completed. The method further includes generating a signal through a communication link to cause the engine to stop operating by: (a) preventing operation of a spark plug, (b) preventing delivery of fuel to the engine, or (c) preventing delivery of oxygen to the engine. | 01-15-2015 |
| 20150061298 | SYSTEMS AND METHODS FOR CONTROLLING ACCELERATION OF A POWER GENERATOR - An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system for operating in an island mode. The rotatable shaft is operatively coupled between a prime mover and a generator for supplying power to an island grid. The electromagnetic braking system further includes a controller for receiving at least one status or synchronization signal and for generating a control signal based on the at least one signal and an inducting unit for applying an electromagnetic braking force on the electrically conductive disc when commanded by the control signal to regulate a rotational speed of the rotatable shaft. | 03-05-2015 |
| 20150097376 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE COUPLED TO A GENERATOR - A method of operating an internal combustion engine coupled to a generator in the event of a grid fault of a power supply grid connected to the generator, in particular in the event of a dynamic grid voltage drop, wherein the internal combustion engine includes a turbocharger having a compressor in an air feed duct of the internal combustion engine and an exhaust gas turbine coupled to the compressor in an exhaust gas duct of the internal combustion engine, wherein there is provided at least one bypass valve for bypass of the compressor and/or for bypass of the exhaust gas turbine, wherein upon or after detection of the grid fault the at least one bypass valve is at least temporarily actuated. | 04-09-2015 |
| 20150115616 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE CONNECTED TO AN ELECTRIC GENERATOR - A method of operating an internal combustion engine connected to an electric generator, in particular a synchronous generator, during a network fault, in particular during an electric short-circuit, in a power supply network connected to the generator, wherein a mechanical power delivered by the internal combustion engine is introduced into the generator and converted into electric power in the generator, wherein the electric power is delivered to the power supply network, wherein the mechanical power delivered by the internal combustion engine is at least temporarily increased in dependence on the value of at least one operating parameter of the generator and/or the internal combustion engine prior to the network fault and/or during the network fault, preferably by an amount of a fuel introduced into the internal combustion engine being increased. | 04-30-2015 |
| 20150311843 | METHOD OF LOADSHEDDING FOR A VARIABLE SPEED, CONSTANT FREQUENCY GENERATOR - A method of controlling operation of a variable speed, constant frequency generator system is disclosed. During operation, loads may be added to or removed from the output of the generator system. A controller monitors the power output by the generator system and detects a change in the output power exceeding a predefined threshold. The change indicates the addition of a large electrical load. The controller quickly detects the change in power output and activates a relay to disconnect the load from the generator system. The controller then accelerates the engine of the generator system to maximum speed and reconnects the load to the output of the generator system. | 10-29-2015 |
| 20150357950 | METHOD AND APPARATUS FOR CONTROLLING A TURBOGENERATOR SYSTEM - An apparatus for controlling a turbogenerator system when a power electronics circuit of the turbogenerator system is unable to provide a sufficient load on the turbogenerator to prevent the turbogenerator from accelerating uncontrollably is described. The apparatus comprises a monitor including a first sensing device operable to detect a condition of the turbogenerator, and a brake controller responsive to a turbogenerator detection output from the first sensing device to issue a first brake control signal for operating a brake circuit to prevent the turbogenerator from accelerating uncontrollably and a second brake control signal for operating the brake circuit to permit resumption of normal operation of the turbogenerator. | 12-10-2015 |
| 20160061055 | CONTROL SYSTEM FOR A HEAT ENGINE SYSTEM UTILIZING SUPERCRITICAL WORKING FLUID - A heat engine system and a method for generating electrical energy from the heat engine system are provided. The method includes circulating via a turbo pump a working fluid within a working fluid circuit of the heat engine system. The method also includes transferring thermal energy from a heat source stream to the working fluid by at least a primary heat exchanger, feeding the working fluid into a power turbine and converting the thermal energy from the working fluid to mechanical energy, and converting the mechanical energy into electrical energy by a generator coupled to the power turbine. At least one valve operatively coupled to a control system is modulated in order to synchronize the generator with an electrical grid. A generator breaker is closed such that the generator and electrical grid are electrically coupled and the electrical energy is supplied to the electrical grid. | 03-03-2016 |
| 20160072420 | GENERATOR WITH POWER OUTPUT DURING ENGINE IDLE - A generator includes an engine, an alternator coupled to the engine for providing power to a load, a controller coupled to the engine for operating the engine at a run speed and an idle speed, and a converter coupled to the alternator for converting a voltage provided by the alternator from a first frequency to a second frequency to power the load when the engine is operating at the idle speed. | 03-10-2016 |
| 20160126874 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE - A method of operating an internal combustion engine, wherein a fuel-air mixture is burnt in the internal combustion engine and the internal combustion engine drives a generator, wherein the generator is connected to a power supply network and delivers power to the power supply network and wherein upon or after detection of a dynamic network fault by which the power delivery of the generator into the power supply network is reduced acceleration of the internal combustion engine is prevented or limited, wherein upon or after the detection of the network fault in the power supply network the fuel feed to the internal combustion engine is increased. | 05-05-2016 |
| 20160190963 | SYSTEMS AND METHODS TO RESPOND TO GRID OVERFREQUENCY EVENTS FOR A STOICHIOMETRIC EXHAUST RECIRCULATION GAS TURBINE - A method includes combusting a fuel and an oxidant in a combustor of an exhaust gas recirculation (EGR) gas turbine system that produces electrical power and provides a portion of the electrical power to an electrical grid. The method further includes controlling, via one or more processors, one or more parameters of the EGR gas turbine system to decrease the portion of the electrical power provided to the electrical grid in response to an over-frequency event associated with the electrical grid, wherein controlling the one or more parameters comprises decreasing a flow rate of fuel to the combustor in response to the over-frequency event. | 06-30-2016 |
| 20160252015 | Gas Turbine Corresponding to Renewable Energy and Control Method Therefor | 09-01-2016 |
| 20170237374 | GENERATOR CONTROL DEVICE AND METHOD | 08-17-2017 |
| 20180026562 | ELECTRIC POWER GENERATION CONTROL DEVICE, ELECTRIC POWER CONVERTER CONTROL DEVICE, ELECTRIC POWER GENERATION CONTROL METHOD AND PROGRAM | 01-25-2018 |
