| Entries |
| Document | Title | Date |
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| 20090008936 | MODULATION CONTROL OF POWER GENERATION SYSTEM - Methods and apparatuses are disclosed for producing current with a desired output frequency from one or more fixed or variable speed alternators by varying a saturation level of a portion of the alternator(s) based on a output frequency desired, and preferably then rectifying the output to produce a desired electrical output which may be provided as direct current or alternating current to a suitable load. | 01-08-2009 |
| 20090079190 | POWER GENERATION CONTROL DEVICE - A power generation control device for a generator driven by a four-stroke cycle engine is provided. The power generation control device includes a switching circuit for controlling an output current from the generator; and a power generation period control device configured to operate the switching circuit to output the output current from the generator in only a predetermined power generation period of the four strokes of the engine, wherein the power generation period ranges from an expansion stroke to an intake stroke of the four strokes. | 03-26-2009 |
| 20090085352 | Power generation control device - A power generation control device can include a switching circuit which controls an output of a generator. A periodical power charge control unit can be configured to allow the switching circuit to the operated in a zone including a combustion stroke of one cylinder of an internal combustion engine, and in an periodical power charge control range preset from in a zone which does not overlap a compression stroke of another cylinder of the internal combustion engine. | 04-02-2009 |
| 20090127855 | ELECTRICAL SYSTEMS ARCHITECTURE FOR AN AIRCRAFT, AND RELATED OPERATING METHODS - An electrical architecture for an aircraft is provided. The electrical architecture is particularly suitable for relatively small, compact, and lightweight aircraft. In one embodiment, the electrical architecture includes an electrical generator component coupled to the aircraft engine, and an air compression system coupled to the electrical generator component. The electrical generator component is configured to receive mechanical power from the engine and to generate a constant frequency AC electrical power from the engine mechanical power, and the air compression system is configured to receive the constant frequency AC power as an input and, in response thereto, produce a pressurized air output having variable characteristics (for example, a variable flow rate or a variable air pressure). | 05-21-2009 |
| 20090206601 | Power control system and method - This invention discloses a power control system comprising a prime mover and a generator driven by the prime mover. A control device is coupled with the generator to ascertain a change in speed of the generator and vary an output power of the generator according to the change. The control device applies a signal to reduce the generator output power and another signal to restore the generator output power. The power control system may include a transmission, a speed converter, and/or an accessory. | 08-20-2009 |
| 20090212561 | Power control system and method - This invention discloses a power control system comprising a prime mover and a generator driven by the prime mover. A control device is coupled with the generator to ascertain a change in speed of the generator and vary an output power of the generator according to the change. The control device applies a signal to reduce the generator output power and another signal to restore the generator output power. The power control system may include a transmission, a speed converter, and/or an accessory. | 08-27-2009 |
| 20090218815 | Turbo compounding system - A system comprises a turbo generator having a switched reluctance machine having at least one pole-matched rotor and stator pair, a single phase inverter coupled to the turbo generator and further coupled to a direct current link, an inverter coupled to the direct current link, a motor generator coupled to the inverter. | 09-03-2009 |
| 20090218816 | MOTOR-GENERATOR SYSTEM WITH A CURRENT CONTROL FEEDBACK LOOP - A motor-generator system with a current control feedback loop for generating electrical energy in stationary, portable, and automotive applications. The generator includes a housing defining an interior space and including a first portion and a second portion; an electric motor assembly positioned within the first portion of the housing, and operationally coupled to a shaft member for selectively rotating the shaft member; an electric generator assembly positioned within the second portion of the housing and operationally coupled to the shaft member for converting mechanical rotation into electrical energy, the electric generator assembly including a current output for supplying electrical current; and a control assembly operationally coupled between the electric generator assembly and the electric motor assembly the control assembly providing a control current to the electric motor assembly for controlling a speed of rotation induced into the shaft member by the electric motor assembly. | 09-03-2009 |
| 20090230680 | Power control system and method - This invention discloses a power control system comprising a prime mover and a generator driven by the prime mover. A control device is coupled with the generator to ascertain a change in speed of the generator and vary an output power of the generator according to the change. The control device applies a signal to reduce the generator output power and another signal to restore the generator output power. The power control system may include a transmission, a speed converter, and/or an accessory. | 09-17-2009 |
| 20090261587 | MICRO SCALE FISCHER-TROPSCH AND OXYGENATE SYNTHESIS PROCESS STARTUP UNIT - A mobile system for providing start-up electrical power to a micro scale liquid hydrocarbon and/or oxygenate synthesis plant is provided including a portable gas or liquid fueled electrical generator, a steam turbine, a plant generator mechanically coupled to the steam turbine, a plant power load; and means for synchronizing electrical power generated by the portable electrical generator with electrical power generated by the plant generator is provided. Also provided is a process for synchronizing electrical power generated by the portable electrical generator with electrical power generated by the plant generator. | 10-22-2009 |
| 20090322079 | METHOD FOR THE OPERATION AND USE OF A CONVERTER - A method for the operation of a converter of a power-generating generator system that can be connected to an electrical AC network, and the use of the converter is provided. | 12-31-2009 |
| 20100038907 | Power Generation - In one aspect, power generation is accomplished by capturing off-gas from a wellhead of an oil producing well, sensing a change in pressure from which a change in available off-gas can be determined, and adjusting a torque supplied by a prime mover to a generator responsive to the change in available off-gas to vary an amount of electricity generated by the generator. | 02-18-2010 |
| 20100045034 | Steam-Based Electric Power Plant Operated on Renewable Energy - A system, apparatus and method for generating electricity from renewable geothermal, wind, and solar energy sources includes a heat balancer for supplementing and regulating the heat energy fed to a turbine generator; a hydrogen-fired boiler for supplying supplementary heat; and an injection manifold for metering controlled amounts of superheated combustible gas into the working fluids to optimize efficiency. | 02-25-2010 |
| 20100078938 | METHOD AND APPARATUS FOR AN ELECTRICAL BUS LEVELING UNIT - A method and apparatus for an electrical bus leveling unit are provided. The electrical bus leveling unit includes a first power supply configured to generate electrical energy having a first set of electrical parameters and a power converter electrically coupled to said power supply. The power converter is configured to be coupled to an electrical bus couplable to a second power supply. The electrical bus leveling unit also includes a controller including a processor that is communicatively coupled to the power supply and the power converter The controller is configured to receive information relating to the operation of the electrical bus from a plurality of sensors, control an output of at least one of the power supply and the power converter to transfer electrical energy to the electrical bus when the second set of electrical parameters on the electrical bus is outside a predetermined range. | 04-01-2010 |
| 20100109323 | DEVICE AND METHOD FOR CONVERTING ENERGY - A device for transforming thermal energy to electric energy including a magnetic circuit including at least a portion made of a magnetic material, a temperature-varying device for varying the temperature in the portion made of the magnetic material alternately above and below a phase transition temperature of the magnetic material to thereby vary the reluctance of the magnetic circuit, and a coil arranged around the magnetic circuit, in which electric energy is induced in response to a varying magnetic flux in the magnetic circuit. A capacitor is connected in parallel with the coil to thereby form a resonant circuit, wherein the resonance frequency of the resonant circuit and the frequency of the temperature variation above and below the phase transition temperature of the magnetic material are dependent on one another to optimize the electric power output. | 05-06-2010 |
| 20100259043 | System and Method for Harnessing and Distributing Normally Wasted Human Energy - To harness the power generated by the fitness machines as a result of work expanded by human operators, the health equipment facility includes an On-Site Energy Generation, Storage and Distribution (GSD) module that serves as a medium between the local facility power distribution system and an external power grid. In general, the GSD module includes hardware, firmware and/or software for converting the mechanical energy generated by one or more fitness machines to electrical power, as well as computer executable instructions for allocating the electrical power between the local distribution system and an external power grid, or storing the generated power for future use. | 10-14-2010 |
| 20110006523 | METHOD AND SYSTEM FOR A MORE EFFICIENT AND DYNAMIC WASTE HEAT RECOVERY SYSTEM - The present invention relates to a method and system for a more efficient and dynamic waste heat recovery system in an automobile. The present invention includes a heat exchanger connected to a generator. The heat exchanger includes variable pitch impellers attached to and rotating a shaft. The pitch of the impellers can be dynamically varied and the impellers can also be staggered. The generator includes a rotor connected to the shaft. The rotor rotates within a stator when the shaft rotates. The stator includes windings with different thicknesses and different turn ratios allowing for generation of different energy levels by each of the windings. Each of the windings can be dynamically activated. The pitch of the impellers can be dynamically altered and the windings can be dynamically activated depending on energy requirements of an energy storage unit and/or accessories in the automobile. | 01-13-2011 |
| 20110018264 | ENERGY CONVERSION AND ACCUMULATION DEVICE AND RELATIVE METHOD - An energy conversion and accumulation device, for the conversion of environmental energy into electric energy, includes a transducer, able to convert external environmental stress into an electric quantity, a storage element to accumulate and/or transfer the electric quantity to an electric device, a first switch element, activated in order to transfer electric energy from the transducer directly to a temporary storage element, and a second switch element activated in order to transfer electric energy stored by the temporary storage element directly to the storage element. The device further includes a sensor element, associated with the transducer, temporary storage element, and storage element. The sensor element detects predetermined energy conditions favorable for the selective and/or mutually alternate activation of the switch elements for a corresponding alternate electric energy transfer respectively from the transducer to the temporary storage element and from the temporary storage element to the storage element. | 01-27-2011 |
| 20110018265 | POWER STATION SYSTEM AND METHOD FOR OPERATING - A combined-cycle power plant ( | 01-27-2011 |
| 20110037260 | PORTABLE MECHATRONICAL DEVICE FOR GENERATING ELECTRIC POWER - The device includes, in a housing, an actuator electrically connected to a battery for charging a portable item such as a mobile terminal. For a rotating actuator comprising a first member submitted to an oscillatory motion, for example a walker carrying the housing, and a second member making up at least partially a mass part, the mass part is able to oscillate around the axle of the armature with respect to the first member. A servo control system can control the actuator sometimes as a motor supplied by the battery or by allowing the mass part to move freely, sometimes as a generator charging the battery, by slaving the motion speed of the mass part to the acceleration of the oscillatory motion of the first member. This enables to recover as much electric power as possible from the walker. | 02-17-2011 |
| 20110057441 | OVERLOAD CONTROL OF AN ELECTRIC POWER GENERATION SYSTEM - A control system for an electrical power generation system (EPGS) provides overload protection without disconnecting a generator of the EPGS from an excessive electrical load. Available engine power and current levels of the electrical load are continuously measured. A command voltage is calculated that corresponds to a voltage required to sustain with the maximum available power. Output voltage of a generator of the EPGS is controlled at the calculated command voltage so that a power limit of the engine is not exceeded during electrical overload conditions. | 03-10-2011 |
| 20110062708 | GENERATOR CONTROL HAVING POWER GRID COMMUNICATIONS - A system is provided for controlling power generation. For example, the system may include a drive, an electrical generator coupled to the drive, and a controller coupled to the drive. The controller may include a stabilizing mode responsive to a utility signal representative of a grid destabilizing event. | 03-17-2011 |
| 20110068576 | METHOD FOR EARLY DETECTION AND ANTICIPATORY CONTROL OF CONSUMER-END LOAD SHEDDING IN AN ELECTRICAL GRID, AND APPARTUS FOR CARRYING OUT THE METHOD - A method for early detection and anticipatory control of consumer-end load shedding in a single-phase or polyphase electrical grid supplied with single phase or polyphase by at least one generator driven by at least one rotating machine includes measuring a current and a voltage between the at least one generator and the electrical grid and/or a current and a voltage in the electrical grid, deriving at least one signal from the measured current and voltage and using the at least one derived signal to act on the at least one rotating machine. | 03-24-2011 |
| 20110115222 | Vibration Energy Harvester for Converting Mechanical Vibrational Energy into Electrical Energy - A vibration energy harvester for converting mechanical vibrational energy into electrical energy, the vibration energy harvester comprising a device for generating electrical energy when subjected to mechanical vibration, and a current control circuit electrically connected to the device for providing a substantially constant output current at an electrical output of the vibration energy harvester. | 05-19-2011 |
| 20110115223 | COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE - A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. | 05-19-2011 |
| 20110181044 | METHOD AND APPARATUS FOR IMPROVING POWER GENERATION IN A THERMAL POWER PLANT - A method and apparatus for improving power generation in a thermal power plant. A dynamic reactive compensation system is provided and is connected to a high voltage bus or a generator bus of the power plant. The dynamic reactive compensation system comprises power electronic devices and is operable to provide most of the reactive power that is required from the power plant. | 07-28-2011 |
| 20110221192 | GENERATOR FOR GENERATING ELETRICAL ENERGY FROM MECHANICAL VIBRATIONS, AND METHOD FOR ADJUSTING THE RESONANT FREQUENCY OF SUCH A GENERATOR - A universally and flexibly applicable generator generates electrical energy from mechanical vibrations. The generator includes a mechanically vibrating system having a spring system and device for changing the mechanical tension of the spring system. A method for adjusting the resonant frequency of the generator allows electrical energy to be generated from mechanical vibrations. | 09-15-2011 |
| 20110233931 | ENERGY MANAGEMENT SYSTEM FOR HEAVY EQUIPMENT - Equipment having an energy management system includes an articulated arm, a work implement, an energy management system, and a hydraulic circuit. The articulated arm includes hydraulic actuators designed to maneuver the articulated arm, and the work implement is fastened to the articulated arm. The energy management system is adjustable between a first configuration and a second configuration, and includes a hydraulic rotating machine and an electric rotating machine coupled to the hydraulic rotating machine. When the energy management system is in the first configuration, the hydraulic rotating machine and the electric rotating machine function as an electric motor powering a hydraulic pump. When the energy management system is in the second configuration, the hydraulic rotating machine and the electric rotating machine function as a hydraulic motor powering an electric generator. The hydraulic circuit is designed to supply a hydraulic fluid to drive the hydraulic actuators when the energy management system is in the first configuration, and is further designed to recover the hydraulic fluid from the hydraulic actuators and to generate electrical power when the energy management system is in the second configuration. | 09-29-2011 |
| 20110233932 | METHOD AND APPARATUS FOR PROVIDING AN ELECTRICAL ENERGY SYSTEM - Embodiments of the subject invention relate to a method and apparatus for providing an electrical energy system. A specific embodiment can incorporate at least one energy harvesting module (H-module), at least one energy storage module (S-module), and at least one power electronic circuit module (C-module). The various modules can be integrated into a standard battery configuration. Specific embodiments pertain to a reconfigurable energy system with modules that can be disconnected and reconnected into different shapes and configurations. | 09-29-2011 |
| 20110233933 | PRESSURE REGULATION DEVICE ADAPTED TO MAINTAIN A PREDETERMINED PRESSURE DROP AND DERIVE ENERGY THEREBY - A pressure regulation device adapted to maintain a predetermined pressure drop. The device includes: a fluid inlet; a turbine rotated by a flowing fluid; a shaft rotated by said turbine; a generator in mechanical communication with said shaft; a fluid outlet. Wherein said predetermined pressure drop across said turbine is converted into useful work by said generator. | 09-29-2011 |
| 20110248498 | GENERATING ELECTRICAL POWER UTILIZING SURFACE-LEVEL HOT AIR AS THE HEAT SOURCE, HIGH ATMOSPHERE AS THE HEAT SINK AND A MICROWAVE BEAM TO INITIATE AND CONTROL AIR UPDRAFT - The invention describes a method of generating electrical power utilizing hot surface air as the heat source, high atmosphere as the heat sink and a microwave beam aimed upward providing updraft to initiate and control the large-scale air circulation. The frequency of the microwave beam is centered at approximately 60 GHz, within the absorption band of molecular oxygen, so as to result in beam penetration to an altitude of several kilometers. The power plant comprises a high-power microwave source, e.g. a bank of gyrotrons, one or more turbine-generator sets, and—optionally—a condenser/cyclone (if on a floating platform). The plant can also provide clean water from condensation out of humid, sea level air. The plant could also be used to remove atmospheric carbon dioxide from large quantities of air. The dynamic chimney produced by the microwave beam could alternatively be deployed in conjunction with a solar heat power plants, industrial chimneys, and cooling towers of conventional power plants to increase their effective height. | 10-13-2011 |
| 20110291411 | POWER DISTRIBUTION SYSTEM HAVING PRIORITY LOAD CONTROL - A power distribution system is disclosed. The power distribution system may have a generator, a first load interruption device associated with the generator, and a load powered by the generator. The power distribution system may also have a second load interruption device associated with the load, and a generator controller. The generator controller may be configured to control the generator, determine existence of a fault condition associated with electric service between the generator and the load, and selectively activate the second load interruption device based on the determination. The generator controller may be further configured to determine if activation of the second load interruption device isolated the fault condition, and selectively activate the first load interruption device when activation of the second load interruption device fails to isolate the fault condition. | 12-01-2011 |
| 20110304139 | HYBRID ENGINE-DRIVEN POWER GENERATOR - A power generator starts an engine by overcoming an inrush current occurs. A calculator ( | 12-15-2011 |
| 20110309618 | ELECTROMECHANICAL ENERGY HARVESTING SYSTEM - A method of electromechanical energy harvesting includes sensing electrical current generated by relative movement of a coil and a magnetic flux source produced by movement of a cantilevered beam in response to ambient vibration energy, determining a vibration characteristic of the ambient vibration energy, and adjusting an effective flexible length of the cantilevered beam as a function of the vibration characteristic and the sensed electrical current. | 12-22-2011 |
| 20120019000 | GENERATOR SET CALIBRATION CONTROLLER - A calibration system for a generator set controller is disclosed. The calibration system may have a source of electric power, a controller in communication with the source and configured to monitor a parameter of the electric power and produce at least one output corresponding to the monitored parameter, and a power meter configured to measure the parameter of the electric power. The calibration system may also have a processor in communication with the source of electric power, the controller, and the power meter. The processor may be configured to direct electric power having a first test voltage from the source to the controller, and directly relate a value of the at least one output corresponding to the first test voltage and a value of the measured parameter to an offset error. | 01-26-2012 |
| 20120032440 | Stationary Energy Generation Plant Having a Control Device and Method for Controlling the same - A stationary energy generation plant includes a control device that serves to control current and energy flow. The energy generation plant includes at least one mechanically driven rotor and a generator mechanically coupled to the rotor. To this end, power electronics operationally connected to the generator enable variable energy flow from the rotor through the generator and the power electronics to a load. In order to compensate for vibrational loads on the generator side, at least one current control is made possible by means of a first intermediate circuit storage of the power electronics. In order to compensate for mechanical vibrational loads and transients of a drivetrain, an energy flow control is provided by means of at least one additional second intermediate circuit storage disposed in the power electronics and having a multiple of the storage capacity of the first intermediate circuit storage. | 02-09-2012 |
| 20120139239 | INVERTER GENERATOR - An inverter generator includes a motor, an electric generator and an ECU generating a pulse at each predetermined rotation angle of the motor. Estimating means estimates an initial electrical angle of alternating voltage produced by the generator from the pulse and calculates a phase shift angle to estimate continuous electrical angle of the alternating voltage. A converter converts the alternating current electric power into direct current electric power under d-q control based on the phase shift angle. An inverter converts the direct current electric power into alternating current output electric power. | 06-07-2012 |
| 20120169049 | Gas Pressure Reduction Generator - A Gas Pressure Reduction Generator (GPRG) System and a method for implementing a GPRG System is provided, where the GPRG System includes a gas inlet configured to receive a pressurized gas flow from a gas supply, at least one expander in flow communication with the gas inlet to receive the pressurized gas flow, wherein the expander is operable to convert the pressurized gas flow into mechanical energy and a depressurized gas flow and a generator associated with the expander, wherein the generator is configured to convert the mechanical energy into electrical energy. | 07-05-2012 |
| 20120274066 | IN-PIPE TURBINE - An in-pipe hydraulic turbine system includes a pipeline for fluid transport, the pipeline having an inlet and an outlet, and a turbine disposed within the pipeline, between the inlet and the outlet. The turbine is actuated by fluid moving through the pipeline and leaves usable fluid pressure downstream of the turbine. | 11-01-2012 |
| 20120306201 | FLUID-COOLED LOAD RESISTOR FOR USE IN ENERGY PRODUCTION AND USE THEREFOR - A load resistor device for a generator driven by a turbine in a fluid string wherein the load resistor is provided with at least one electrical element in heat conducting connection with the turbine driving fluid. Also described is a method for use of such a device. | 12-06-2012 |
| 20120319403 | Wheel Turbine Rotor - A turbine rotor is provided and includes a rotor plate, wherein the rotor plate is substantially circular in shape and includes a rotor plate surface having a rotor plate center and a rotor plate periphery. The turbine rotor further includes a plurality of rotor blades, wherein the plurality of rotor blades are associated with the rotor plate to be located proximate the rotor plate periphery and to extend out of and away from the rotor plate surface, wherein the rotor plate is configured to be attached to a turbine shaft that rotates about a shaft axis, such that when the turbine shaft rotates about the shaft axis, the rotor plate rotates about the shaft axis. | 12-20-2012 |
| 20120326443 | VARIABLE SPEED POWER GENERATION FROM INDUSTRIAL FLUID ENERGY SOURCES - Method and apparatus are provided for the process optimization of a working fluid stream and energy recovery therefrom. A turbine in the working fluid stream is coupled to a variable speed generator for forming a turbine-generator pair. One controls the turbine speed for affecting the fluid stream for achieving a process objective including controlling fluid process conditions, power generation or both. One can select to achieve a primary process objective with optimization of power generation being secondary. The objectives can be controlled using a base lookup table of turbine performance. Further, actual performance can be gathered for adapting an updated lookup table for better control and optimization. Additional turbine-generator pairs can be arranged in series or parallel for flexible operation and control. | 12-27-2012 |
| 20130015658 | Method and Device for Damping Torsional OscillationsAANM Vath; AndreasAACI LeidersbachAACO DEAAGP Vath; Andreas Leidersbach DEAANM Herrmann; TobiasAACI AschaffenburgAACO DEAAGP Herrmann; Tobias Aschaffenburg DEAANM Saettler; HannoAACI WurzburgAACO DEAAGP Saettler; Hanno Wurzburg DE - A method for damping torsional oscillations in a power production plant includes a drive train, a rotor fitted to a rotor-side end of the drive train, and a generator driven via the drive train and fitted to a generator-side end of the drive train. By using at least one angular position of the drive train at the generator-side end thereof, a torsional moment acting on the drive train is determined and used to control the generator. | 01-17-2013 |
| 20130020803 | STEADY-STATE AND TRANSITORY CONTROL FOR TRANSMISSION BETWEEN ENGINE AND ELECTRICAL POWER GENERATOR - A system for transforming a variable output into an input having a desired speed value, including a transmission receiving the output having a first speed (Ve) and producing the input having a second speed (Vgen), first, second and third sensors producing data corresponding to the first speed (Ve), second speed (Vgen) and a power demand (Pdem) for the input, a ratio set point controller, a ratio controller and a speed controller. The ratio set point controller receives the data and calculates an available power (Pav), a stability level of the system (S,U | 01-24-2013 |
| 20130038056 | METHODS AND APPARATUS FOR HARVESTING BIOMECHANICAL ENERGY - Methods and apparatus are disclosed for harvesting energy from motion of one or more joints. Energy harvesters comprise: a generator for converting mechanical energy into corresponding electrical energy; one or more sensors for sensing one or more corresponding characteristics associated with motion of the one or more joints; and control circuitry connected to receive the one or more sensed characteristics and configured to assess, based at least in part on the one or more sensed characteristics, whether motion of the one or more joints is associated with mutualistic conditions or non-mutualistic conditions. If conditions are determined to be mutualistic, energy harvesting is engaged. If conditions are determined to be non-mutualistic, energy harvesting is disengaged. | 02-14-2013 |
| 20130056981 | METHODS AND APPARATUS FOR CONTROL OF BIOMECHANICAL ENERGY HARVESTING - An apparatus for harvesting energy from motion of a human or animal body segment and providing the energy to an electrical load is disclosed. The apparatus comprises a generator operatively coupled to the body segment such that particular movement of the body segment causes the generator to output a generator current and to oppose the particular movement of the body segment with a generator torque. An electrical load is coupled to receive the generator current. A control system is operatively connected between the generator and the electrical load and is configured to control the generator torque during the particular movement of the body segment. Corresponding methods are also disclosed. | 03-07-2013 |
| 20130056982 | Gas Turbine Generator - A gas turbine generator | 03-07-2013 |
| 20130056983 | POWER GENERATION CONTROL APPARATUS - When electric generators operate in parallel, field current control operations thereof are synchronized thereby to equalize load balance therebetween. A first power generation control device connected to a main electric generator and a second power generation control device connected to a subordinate electric generator are each provided with an external sensing terminal that detects an external voltage of each electric generator to which itself belongs, an output sensing terminal that detects a power generation voltage generated by each electric generator itself, and the external output terminal that outputs a signal synchronized with a field current control signal for each field coil of each electric generator. When the plurality of electric generators are caused to drive at the same time, the external output terminal of the first power generation control device and the external sensing terminal of the second power generation control device are connected to each other. | 03-07-2013 |
| 20130069367 | POWER GENERATION CONTROL DEVICE AND POWER GENERATION CONTROL METHOD FOR VEHICLE - A device that controls a power generator driven by power from an engine includes: a brake operation amount detection unit that detects a brake operation amount; and a power generation amount setting unit that sets a power generation amount of the power generator to be lower when a vehicle is predicted to accelerate in accordance with the brake operation amount. | 03-21-2013 |
| 20130076034 | LEISURE VEHICLE - The present invention is to provide a leisure vehicle in which a load applied to an engine is controlled and a driving property and an output are improved. The leisure vehicle has a generator | 03-28-2013 |
| 20130099492 | ENGINE OPERATING MACHINE - The present invention provides an air cooling means forcibly cools inside of an operation box of controlling an engine generator by using engine cooling air. An engine generator has a generator driven by an engine and an operation box housing a controller for the generator. The engine is cooled by a fan. The operation box has an upper opening for taking outside air and a lower opening for exhausting air to the outside from the operation box. The lower opening is disposed so as to be oriented to the cooling air flow generated by the fan. A bottom plate of the operation box is disposed obliquely to an air intake port for taking air to the engine by the cooling fan for the engine, and the lower opening is opened in the bottom plate. | 04-25-2013 |
| 20130168960 | METHOD AND APPARATUS FOR POLE-SLIP DETECTION IN SYNCHRONOUS GENERATORS - A system and method for predicting a pole slip in a synchronous generator is provided. The system includes a stator voltage frequency detector to determine the frequency of the stator voltage, a mechanical frequency detector to determine the rotational speed of the rotor and a prediction unit that is operative to disconnect the generator from a power grid if it determines that that a pole slip is likely based on comparison of the frequency of the stator voltage and the rotational speed of the rotor. | 07-04-2013 |
| 20130168961 | COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE - A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. | 07-04-2013 |
| 20130207390 | HYDROELECTRIC IN-PIPE TURBINE USES - An in-pipe turbine has uses in energy storage and circulation. Specific applications are in storage systems working by elevation, smart grid systems, pressure release, and heating/cooling systems. | 08-15-2013 |
| 20130292941 | ELECTRICAL MACHINE - An electromagnetic machine, comprising: a first stator winding having a first number of pole pairs; a second stator winding having a second number of pole pairs which is different to the first number of pole pairs; and, a modulator having a plurality of pole pieces arranged relative to the first and second stator windings so as to modulate the electromagnetic fields produced by the first and second stator windings, thereby matching harmonic spectra of the first and second stator windings. | 11-07-2013 |
| 20130307269 | COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE - A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. | 11-21-2013 |
| 20140001756 | ELECTROMAGNETIC BRAKING SYSTEMS AND METHODS | 01-02-2014 |
| 20140001757 | CONTROL SYSTEM AND METHOD FOR POWER PLANT | 01-02-2014 |
| 20140077494 | METHODS AND APPARATUS TO POWER AN EXERCISE MACHINE - Methods and apparatus to power an exercise machine are disclosed herein. An example method includes measuring a power supply current produced by a user of the exercise machine. A rotations per minute of the exercise machine is measured. A power supply reference current is determined, the power supply reference current based on a user selected wattage and the rotations per minute. A differential power supply current is calculated based on the power supply reference current and a measured current of a power supply of the exercise machine. A power supply duty cycle is calculated based on a previous power supply duty cycle, a time constant, the differential power supply current, and a previous differential power supply current, the power supply duty cycle to control power supplied to a console of the exercise machine. The power supply duty cycle is output to a power output controller. | 03-20-2014 |
| 20140110939 | WASTE HEAT POWER GENERATOR - The waste heat power generator (G | 04-24-2014 |
| 20140152006 | Managing Efficiency of an Engine-Driven Electric Generator - Systems and methods of managing an engine-driven electric generator. An example method may include populating an efficiency database with fuel provided and electrical power output data for the engine-driven electric generator. The method may also include receiving a desired electrical power output of the engine-driven electric generator. The method may also include adjusting fuel provided to the engine-driven electric generator to generate the desired electrical power output using the efficiency database. | 06-05-2014 |
| 20140152007 | Managing Efficiency of a Pool of Engine-Driven Electric Generators - Systems and methods of managing a pool of engine-driven electric generators. An example method may include populating an efficiency database with fuel provided and electrical power output data for each of the engine-driven electric generators in the pool. The method may also include receiving a desired electrical power output from the pool of the engine-driven electric generators. The method may also include adjusting fuel provided to at least one of the engine-driven electric generators in the pool to generate the desired electrical power output using the efficiency database. | 06-05-2014 |
| 20140152008 | METHODS AND APPARATUS FOR HARVESTING BIOMECHANICAL ENERGY - Methods and apparatus are disclosed for harvesting energy from motion of one or more joints. Energy harvesters comprise: a generator for converting mechanical energy into corresponding electrical energy; one or more sensors for sensing one or more corresponding characteristics associated with motion of the one or more joints; and control circuitry connected to receive the one or more sensed characteristics and configured to assess, based at least in part on the one or more sensed characteristics, whether motion of the one or more joints is associated with mutualistic conditions or non-mutualistic conditions. If conditions are determined to be mutualistic, energy harvesting is engaged. If conditions are determined to be non-mutualistic, energy harvesting is disengaged. | 06-05-2014 |
| 20140152009 | COMPLEMENTARY POWER AND FREQUENCY CONTROL FOR POWER GENERATING EQUIPMENT - A controller for a power generating system that includes an engine and a generator, wherein the engine provides mechanical force to the generator, which converts the mechanical force to electrical energy that is distributed via a distribution network. The controller includes a complementary filter that applies a low-frequency response to changes in the monitored power output and a high-frequency response to changes in the monitored grid frequency. The complementary filter combines outputs of the high-frequency response and low-frequency response to generate a process variable. A feedback controller generates a fuel flow value in response to the process variable. | 06-05-2014 |
| 20140159365 | Control System for Load Sharing Between a Generator Set and an Inverter-Based Energy Storage - A power system includes a prime mover configured to generate a drive force, a generator configured to receive the drive force and be driven by the prime mover to produce electrical power for an external load. The system includes a power storage device configured to store electrical power or to discharge electrical power to the external load. The system further includes a controller configured to control the power storage device to discharge power to supplement the electrical power from the generator directed to the external load. | 06-12-2014 |
| 20140239636 | SHOVEL AND METHOD OF CONTROLLING SHOVEL - A shovel includes an internal combustion engine whose revolution speed is controlled to be constant, a hydraulic pump connected to the internal combustion engine, a generator connected to the internal combustion engine, and a control unit for controlling the generator, wherein the control unit causes the generator to perform an electrical power generating operation in a case where a load on the hydraulic pump is increasing. | 08-28-2014 |
| 20140265326 | SYSTEM, METHOD, AND APPARATUS FOR GENERATING POWER FROM PRESSURIZED NATURAL GAS - Embodiments of the present disclosure provide systems and apparatus for generating power from pressurized natural gas. The system may include an on-site pressure turbine for using some of the available energy of the pressurized natural gas to power an air compressor and/or electric generator. The turbine is driven by the expansion of natural gas due to a pressure differential and/or by the velocity of natural gas as it travels through a pipeline. In some embodiments, the turbine output is used to generate compressed air, which is used on-site to power pumps and switches. In some embodiments, the turbine output is used to generate electricity, which is then used on-site to power communications equipment and sensors. In some embodiments, a gear reduction system is used to adapt the turbine output to useful levels. | 09-18-2014 |
| 20140353970 | METHODS AND APPARATUS FOR CONTROL OF BIOMECHANICAL ENERGY HARVESTING - An apparatus for harvesting energy from motion of a human or animal body segment and providing the energy to an electrical load is disclosed. The apparatus comprises a generator operatively coupled to the body segment such that particular movement of the body segment causes the generator to output a generator current and to oppose the particular movement of the body segment with a generator torque. An electrical load is coupled to receive the generator current. A control system is operatively connected between the generator and the electrical load and is configured to control the generator torque during the particular movement of the body segment. Corresponding methods are also disclosed. | 12-04-2014 |
| 20140367966 | OIL SAND SLURRY TRANSPORTATION SYSTEM AND METHOD FOR VARIABLE SLURRY FLOW RATES - Provided is a system for transporting an oil sand slurry, comprising a pump, upstream and downstream lines, a shaft connectable to the pump, a driving mechanism driving the pump and a regulator for regulating the torque applied to the shaft between positive and negative torque modes, to pump the slurry at higher or lower flow rates. Also provided is a method comprising pumping the slurry through a pipeline using a pump driven by a motorised shaft and adjusting the flow rate of the slurry by varying the torque applied to the motorised shaft between positive and negative torque modes. The oil sand slurry transportation system and method enable positive head (regular pump action) for normal and high flow rates and negative head (pump brake action) for low flow rates, which reduces system energy loss, pipeline wear, vapour breakout and sanding off. | 12-18-2014 |
| 20150014991 | Apparatus and Method for Generating Power - An apparatus ( | 01-15-2015 |
| 20150028588 | Generator System and Method of Operation - A generator system includes an AC generator having one or more phases; a transformer having the same number of phase as the generator; for each phase of the AC generator, a capacitive element having a first terminal electrically connected to an output winding of the AC generator and a second terminal electrically connected to a primary winding of a respective phase of the transformer; a prime mover in driving engagement with the AC generator; and a load connected to a secondary winding of the transformer. A method to reduce the mechanical input to the AC generator includes reducing the counter torque of the generator system via a respective series connected capacitive element having a first terminal electrically connected to the output winding of the AC generator and a second terminal electrically connected to a primary winding of a respective phase of the transformer. | 01-29-2015 |
| 20150091301 | UNITS AND METHODS FOR ENERGY STORAGE - The invention relates to a pumped storage power plant ( | 04-02-2015 |
| 20150097371 | SYSTEM AND METHOD FOR CONTROLLING ROTATIONAL DYNAMICS OF A POWER GENERATOR - An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system. The rotatable shaft is operatively coupled to a prime mover and a generator. The electromagnetic braking system further includes an inducting unit for applying an electromagnetic braking torque on the electrically conductive disc when commanded by a control signal and a controller for receiving an activation signal from an activating unit, receiving a rotational signal from a rotational sensor coupled to the rotatable shaft or the generator, determining a control signal when the rotational signal is outside of a threshold, and, when the activation signal is active and the rotational signal is outside of the threshold, sending the control signal to the inducting unit to regulate a rotational dynamic of the rotatable shaft. | 04-09-2015 |
| 20150108754 | POWER CONVERTER FOR ENGINE GENERATOR - A power converter for an engine generator includes an insulative support that receives and supports circuit components for converting incoming AC power to desired power, such as power suitable for a welding application. One or more rectifier modules are provided that are received and supported by the support. Three such modules may be provided for receiving three phase power from a generator. DC power from the rectifier module is applied to DC bus plates. The plates may be coupled to capacitors. A power conversion circuit, such as a buck converter, is coupled to the DC bus plates to convert the DC power to output power. | 04-23-2015 |
| 20160036363 | SYSTEMS UTILIZING A CONTROLLABLE VOLTAGE AC GENERATOR SYSTEM - An electrical system for a motorized system can include a controllable voltage AC generator configured to be connected to a power generation unit shaft and configured to convert rotational energy to electrical energy, wherein the controllable voltage AC generator is configured to output a desired voltage irrespective of a change in a rotational speed of the controllable voltage AC generator, and an AC bus operative to connect the controllable voltage AC generator to an AC electrical device. | 02-04-2016 |
| 20160041567 | Gas Turbine Generation System - A gas turbine generation system has a three-phase generator whose rotor is mechanically coupled to a gas turbine. The system comprises a three-phase voltage balancing circuit having elements independently operable for each phase to disperse or cancel unbalanced components of three-phase current, during unbalanced fault in a power grid connected to the generator, result in balancing of the three-phase voltage; and the voltage balancing constitutes a mechanism of avoiding the occurrence of the rotor vibration from mechanical resonance points on turbine blades. | 02-11-2016 |
| 20160068066 | EXTERNAL POWER SUPPLY SYSTEM - External power supply system includes an electrical storage device, motor, inverter that drives the motor by using electric power of the electrical storage device, and a control device controls the inverter. The inverter includes a first and second switching elements connected in series with each other between a positive and negative electrode power supply lines. A connection-node of the first and second switching elements is connected to one corresponding stator coil. The control device inputs signals to the inverter to drive the inverter such that voltage at the neutral point becomes a predetermined value. The control device compensates for signals in dead time period, the period in which off-state signals are supplied to the first and second switching elements, on the basis of current that is input from the connection-node to one corresponding stator coil or output from one corresponding stator coil to the connection-node while an engine is driven. | 03-10-2016 |
| 20160083106 | DEVICE FOR CUTTING-OFF POWER TO THE ALTERNATORS OF A TURBINE ENGINE DURING ACCELERATION - A DC electrical generation system for an aircraft propelled by a turbine engine, such as a turbojet, includes at least one electrical energy storage capacity, at least one generator driven mechanically by a rotation shaft of the turbine engine and electrical connections between the electrical energy storage capacity, the generator and the aircraft equipment for powering the above-mentioned equipment with DC current, also including at least one alternative for supplying DC current to the equipment, which are autonomous in relation to any mechanical driving by a rotation shaft of the turbine engine, and a device that can cut-off power to the generator(s) and simultaneously activate the alternative current supply. The power cut-off device for triggering power cut-off and activating the alternative current supply is controlled by a control or operating parameter of the turbine engine. The alternative current supply is preferably formed by one or more supercapacitors. | 03-24-2016 |
| 20160130970 | JET ENGINE ASSEMBLY AND METHOD FOR GENERATING ELECTRICITY - A jet engine assembly includes a jet engine having at least one spool and a generator. The generator comprising a rotor and a stator, with the rotor being operably coupled to the at least one spool, and an electronic commutator controlling the rotation of a magnetic field of the rotor such that the electric motor generates electricity. Also, a method of generating electricity from a generator having a stator and a rotor, the method comprising controlling a rotation of a magnetic field to generate electricity. | 05-12-2016 |
| 20160181909 | ELECTRIC UNIT FOR A PUMP-STORAGE POWER PLANT | 06-23-2016 |
