Class / Patent application number | Description | Number of patent applications / Date published |
307084000 | Plural generators | 55 |
20080197709 | Cogeneration system - In a cogeneration system having a generator that generates DC power, an internal combustion engine for driving the generator, a battery that stores DC power for starting the engine, and an inverter that inverts the DC power generated by the generator to AC power, there are provided a solar unit that generates DC power by converting radiant energy of sunlight into electrical energy and a DC/DC converter that boosts the DC power stored in the battery, such that one of the generator and the solar unit is connected to the inverter through the DC/DC converter, thereby enabling to share the DC/DC converter and thus to make structure simple. | 08-21-2008 |
20090146501 | DISTRIBUTED SOLAR POWER PLANT AND A METHOD OF ITS CONNECTION TO THE EXISTING POWER GRID - A method and apparatus is provided for using a renewable source of energy such as solar, wind or geothermal energy. The method includes generating electric energy from a renewable form of energy at a plurality of locations at which reside an electric power line associated with an electric power grid. The electric energy generated at each location is transferred to the electric power line to thereby supply electric energy to the electric power grid. | 06-11-2009 |
20090218889 | ON-VEHICLE POWER GENERATION CONTROLLER - Provided is an on-vehicle power generation controller capable of uniformly maintaining balance of electric power generated by a plurality of generators, and also capable of realizing a less expensive controller structure. The on-vehicle power generation controller includes a controller ( | 09-03-2009 |
20090315405 | CONNECTION APPARATUS FOR PARALLEL RUNNING GENERATORS - In an apparatus for connecting two generators to an electrical load, there are provided a first group of terminals that are adapted to be connected to a single remote controller provided independently and separately from the apparatus and provided with a start switch and a stop switch to be manipulated by an operator, a second group of terminals that are adapted to be connected to each remote control terminal of the generators, and an electronic control unit that is connected to the first and second group of terminals and starts/stops each of the generators by outputting signals to each of the generators through the second group of terminals in accordance with a start instruction signal and a stop instruction signal produced in response to the operator's manipulation of the start switch and stop switch and inputted through the first group of terminals, thereby enabling to start and stop generators to be run in parallel by using a single remote controller. | 12-24-2009 |
20100038969 | Method and system for electrical power generation - Electrical power generation systems typically comprise an electrical power distribution arrangement in which a number of electrical power generators are coupled in parallel. In such circumstances in order to avoid conflict generally a first electrical power generator is controlled with a voltage controller whilst second electrical power generators have electrical current controllers. As loads are switched into and out of the electrical distribution system in normal operation the first electrical power generator and its voltage controller can accommodate voltage dynamics and therefore maintain a desired voltage. However, in order to accommodate heavier loads switching, the dynamic operation of the electrical current controller is achieved through utilising operational voltage margins from a desired voltage as control signals to the electrical current controller. A threshold is provided above which the electrical voltage margin must operate and regimes are provided to determine continued increase or fall in the operational voltage to allow continued dynamic control of the electrical current in order that voltage stability can be re-established with regard to electrical power distribution arrangements. | 02-18-2010 |
20100084925 | Underwater substation - An underwater substation pod (USP) adapted to collect and process the electrical outputs of an array of offshore power generating devices includes a voltage boosting transformer for combining and transmitting with increased efficiency an amplified version of the collected electrical outputs to an on shore facility. Combining the outputs and transmitting at a higher voltage reduces transmission losses and the number of cables required to transmit the electrical outputs. The USP is mounted on the seabed but operated at atmospheric pressure to accommodate standard components. The pod may be designed to include remotely controlled operation and to have a long service life since few, if any, moving parts are used. Also, the equipment may be designed to have a high degree of redundancy to provide greater reliability. | 04-08-2010 |
20100102637 | Generator set control system - A control system is provided for use with a plurality of generator sets. The control system may have at least one load discrete signal cable, a ramping discrete signal cable, a switching device, and a control module associated with a first of the plurality of generator sets. The control module may be configured to detect a signal on the at least one load discrete signal cable generated by a second of the plurality of generator sets indicative of a load on the second of the plurality of generator sets, and to activate the switching device to implement an operational status change of the first of the plurality of generator sets based on the detection. The control module may also be configured to generate a signal on the ramping discrete signal cable to inhibit others of the plurality of generator sets from changing operational status during the operational status change of the first of the plurality of generator sets. | 04-29-2010 |
20100148588 | Genset control system implementing engine synchronization - A control system for use with a genset is disclosed. The control system may have a bus configured to receive power from the generator set, and a first sensor configured to generate a first signal indicative of a characteristic of power on the bus. The control system may also have a second sensor configured to generate a second signal indicative of an engine parameter of the generator set, and a controller in communication with the first and second sensors. The controller may be configured to synchronize an electrical output of the generator set with the power on the bus based on the first and second signals. | 06-17-2010 |
20100219692 | 3N-4-Level voltage inverter - The invention relates to a 3N−4-level (N≧3) voltage converter including:
| 09-02-2010 |
20110095616 | ELECTRIC POWER SELLING SYSTEM - It is an object of the present invention to suppress such a situation that electric power selling becomes impossible while the deterioration of supply power is prevented. The electric power selling system of the present invention comprises a solar battery | 04-28-2011 |
20110133563 | METHOD AND APPARATUS FOR REDUCTION OF HARMONICS IN A POWER SUPPLY - A power supply device adapted for supplying electrical power to a load comprises a first electrical generator adapted for providing a first output current having a first phase angle; at least a second electrical generator adapted for providing a second output current having a second phase angle independent of the first phase angle; and a combination unit adapted for combining the first output current and the second output current to a combination current having reduced harmonics compared to the first and second output currents. | 06-09-2011 |
20110163606 | Method and Apparatus for Monitoring and Controlling a Power System - A power system includes a plurality of power generation units configured to generate power from a renewable energy resource and at least one controller configured to be coupled to at least one power generation unit of the plurality of power generation units. The power system also includes a server that is configured to be communicatively coupled to the at least one controller. The server is configured to receive operational data from the at least one controller, transmit the operational data to a user, and control an operation of the plurality of power generation units. | 07-07-2011 |
20110298293 | FLYWHEEL ENERGY SYSTEM - An energy storage system comprises a housing and a flywheel having a drive shaft portion attached to a cylindrical ferromagnetic rotor portion. The drive shaft portion defines a substantially vertical axis about which the rotor portion is mounted for rotation. A magnetic bearing assembly comprised of an annular permanent magnet having no electromagnetic components is mounted on the housing in stationary centered relation about the vertical axis above the rotor portion so as to attract the rotor portion axially upwardly towards a lower face of permanent magnet, thereby supporting a significantly high portion of the weight of the flywheel. At least one low friction mechanical bearing assembly is mounted within the housing about the drive shaft portion to provide radial positioning of the rotor portion and to limit at least upward axial movement of the rotor portion in relation to the lower face. The annular permanent magnet overlies a portion of the end face of the rotor with the balance providing a return path for magnetic flux. | 12-08-2011 |
20110309683 | Electric power control system and electric power facility comprising the electric power control system - An electric power control system is provided. The power control system includes a first node to which a plurality of power production entities are connectable for combining their power output signals as a first power signal, a transformer adapted to transformer the first power signal at the first node to a second power signal at a second node connectable to a load, the second power signal having a higher voltage than the first power signal, at least one capacitor connectable to the first node and/or to the second node, a control unit adapted to control the connection of the at least one capacitor to the first node and/or to the second node such that a power loss caused by transmission loss of the power output signals from the power production entities to the load is minimized. | 12-22-2011 |
20120007435 | POWER GENERATOR AND POWER GENERATION SYSTEM - A power generator according to the present invention includes: a power generating section ( | 01-12-2012 |
20120074789 | GREEN POWER DEMAND MANAGEMENT DEVICE - A green power demand management device includes: a power meter which receives power from a power distribution system with a plurality of power generating units, and supplies a received power to a first appliance; a receiver which receives energy mixture information showing a power generation proportion among each power generating unit, a measuring unit which measures electric energy consumed by the first appliance, a setting unit which sets a first threshold, and an operating state control manager which uses an intensity conversion table including emission intensities each representing an amount of an environmental load material emitted by each power generating unit, obtains a second threshold by dividing the first threshold by sum total of the emission intensity of each power generating unit weighted by the proportion, and controls the first appliance so that electric energy consumption of the first appliance is equal to or smaller than the second threshold. | 03-29-2012 |
20120126628 | FREQUENCY CONVERTER - The inventions relates to a system for conditioning of power from a turbine, the turbine comprising at least one turbine blade ( | 05-24-2012 |
20120139354 | No Break Power Transfer for Power Generating System - A method for no break power transfer in a variable frequency power generating system, the power generating system comprising a first bus connected to a first generator and a second bus connected to a second generator includes configuring a power transfer device to output power that is synchronized to match a voltage and a frequency of the second bus to the second bus; reconfiguring the power transfer device to output power that is synchronized to match a voltage and a frequency of the first bus to the second bus; and closing a tie switch located between the first bus and the second bus. | 06-07-2012 |
20120146423 | WIND FARM ISLAND OPERATION - A method and a system are described for island operation of at least two wind turbines associated with a wind farm, wherein said wind farm is configured for providing power generated by wind turbines in said wind farm to a main grid and wherein the method comprises: detecting at least two or more deactivated wind turbines in said wind farm, said deactivated wind turbines being disconnected from said main grid; configuring at least one islanded local grid for electrically connecting said two or more deactivated wind turbines; activating at least one of said deactivated wind turbine using a black start operation; and, connecting said at least one activated wind turbine and at least one of said deactivated wind turbines to said local grid, said activated wind turbine acting as a power supply for said at least one deactivated wind turbine connected to said local grid. | 06-14-2012 |
20120193990 | SYSTEM AND METHOD FOR CONTROLLING A GROUP OF PHOTOVOLTAIC GENERATORS - A method for controlling a group of photovoltaic energy generators, the method includes providing, to a junction that is coupled to a component of a first photovoltaic energy generator (PEG), power generated by at least a second PEG such as to increase the power that is generated from the group of photovoltaic energy generators (PEGs); wherein the group of PEGs comprises the first PEG and the second PEG. | 08-02-2012 |
20120193991 | ACTIVE DESYNCHRONIZATION OF SWITCHING CONVERTERS - A power generator park provided, which includes at least two power generator devices. Each power generator device has a switching converter for providing an electrical output power. A central controller is provided for providing switching parameter settings to the switching converters. Each of the at least two power generator devices further includes a timing unit for receiving a common time signal. The switching converter of each of the at least two power generator devices is configured for controlling at least one switching parameter in response to the respective switching parameter setting with a temporal coordination based on the common time signal. | 08-02-2012 |
20120193992 | POWER CONVERTER SYSTEM - A power converter system includes a first unipolar voltage source that produces a first voltage and a second unipolar voltage source that produces a second voltage. The power converter system also includes a transformer with a first primary winding, a second primary winding, and a secondary winding, and control equipment. The first primary winding is connected to the first unipolar voltage source, and the second primary winding is connected to the second unipolar voltage source such that when the first voltage is applied, a first secondary voltage is induced in the secondary winding and that when the second voltage is applied, a second secondary voltage is induced. The first secondary voltage is directed in opposition to the second secondary voltage. The control equipment drives the first unipolar voltage source and the second unipolar voltage source in alternation for the production of the first voltage and the second voltage. | 08-02-2012 |
20120205986 | MULTIPLE SINGLE PHASE GENERATOR CONFIGURATION - Some embodiments relate to a power generation system which includes a bus and a first single-phase synchronous generator that may provide a voltage output to the bus. A first generator controller operates the first single-phase synchronous generator. The power generation system further includes a second single-phase synchronous generator that may provide a voltage output to the bus. A second single-phase synchronous generator controller operates the second single-phase synchronous generator. The power generation system further includes a communication module that exchanges data with at least one of the first generator controller and the second generator controller such that the first generator single-phase synchronous generator and the second single-phase synchronous generator are able to simultaneously supply a voltage and current output to the bus. | 08-16-2012 |
20120212067 | PORTABLE COMPLEX POWER SUPPLY APPARATUS - A portable complex power supply apparatus includes a portable case in which a hand generator, a power input connection member, a power control circuit element, a power storage unit, and an output connector are disposed or contained. Thus, the portable complex power supply apparatus is capable of supplying electric power everywhere by manpower or a power generator connected therewith, storing the electric power, and outputting the electric power to an electrical device with varies kinds of power specifications, so as to provide convenience in supplying electric power. | 08-23-2012 |
20120217814 | STORAGE CONTROL APPARATUS AND STORAGE CONTROL METHOD - Power generating elements output electromotive force. A path switching unit switches a path for connecting arbitrary power generating elements among the power generating elements. A voltage converting unit is a DC-DC converter that converts voltage levels of outputs of some of the power generating elements. A path switching control unit controls the path switching unit such that a set of power generating elements where a sum of maximum power point voltages falls within a range of an appropriate charging voltage of a storage element is connected to a short-circuit path and the other power generating elements are connected to a transformation path. A voltage conversion control unit controls a transformation rate of voltage conversion in the voltage converting unit such that a voltage in the transformation path and a voltage in the short-circuit path become equal to each other. | 08-30-2012 |
20120228949 | DC ELECTRICAL POWER SYSTEM - A DC electrical power system has a power generator converter system, a positive supply rail extending from the converter system, a negative supply rail extending from the converter system, and a midpoint earthing arrangement operatively connecting to the supply rails. The earthing arrangement is connected to earth by a solid earth connection. The network further has a first protective device on one of the supply rails which in case of a fault is operable to interrupt current flowing on that rail, and a second protective device on the earthing arrangement which in case of a fault is operable to interrupt current flowing to earth through the solid earth connection. | 09-13-2012 |
20120228950 | STABILIZATION SYSTEM, POWER SUPPLY SYSTEM, CONTROL METHOD OF THE MASTER MANAGEMENT DEVICE AND PROGRAM FOR THE MASTER MANAGEMENT DEVICE - This stabilization system providing plural power supply systems, the power supply systems comprising, distributed type power sources, and detection unit detecting the power passing through specific parts of the distribution lines between the distributed type power sources and the power grid, wherein smoothing control is performed on the power output to the power grid based on the detected power output data of the detection unit, and said plural power supply systems include a first power supply system performing smoothing control in the event that the amount of fluctuation of the value of said detected power output is not less than a first threshold value, and a second power supply system performing smoothing control in the event that the amount of fluctuation of the value of said detected power output is not less than a second threshold value which is greater than the first threshold value. | 09-13-2012 |
20120267959 | DEVICE FOR TRANSPORTING ENERGY BY PARTIAL INFLUENCE THROUGH A DIELECTRIC MEDIUM - The invention proposes a means for transporting electrical energy and/or information from a distance by using, at a slowly varying regime, the Coulomb field which surrounds any set of charged conductors. The device according to the invention is composed of energy production and consumption devices situated a short distance apart, it uses neither the propagation of electromagnetic waves nor induction and cannot be reduced to a simple arrangement of electrical capacitors. The device is modeled in the form of an interaction between oscillating asymmetric electric dipoles, consisting of a high-frequency high-voltage generator ( | 10-25-2012 |
20130002032 | POWER GRID OPERATION CONTROL SYSTEM, DEVICE, AND METHOD - A power grid operation control system, device, and method for steadily operating a power grid while making the most of renewable energy. The power grid operation control system serves a power grid connected to a plurality of renewable energy and a plurality of thermal/hydroelectric power generators, and includes an automatic dispatching system, which controls the thermal/hydroelectric power generators, and a renewable energy generation control system, which controls the renewable energy. The automatic dispatching system controls the thermal/hydroelectric power generators by generating an automatic frequency control signal for correcting the power supply and demand imbalance of the power grid. The renewable energy generation control system determines an available connection capability and issues load instructions to ensure that the total power generation capacity of the renewable energy does not exceed the available connection capability. | 01-03-2013 |
20130134789 | SYSTEM AND METHOD FOR REACTIVE POWER COMPENSATION IN POWER NETWORKS - A reactive power compensation method includes generating a variable power factor curve for at least one power generator based on information regarding network parameters; obtaining a value of an active output power parameter from the at least one generator; computing a reactive power based on the variable power factor curve and the value of the active power output parameter of the at least one generator; generating a reactive power compensation command based on the computed reactive power; and transmitting the reactive power compensation command to the at least one power generator for controlling operation of the at least one power generator. | 05-30-2013 |
20130169055 | INSTALLATION FOR PRODUCING ELECTRICITY INCLUDING A PLURALITY OF ELECTRICITY PRODUCING DEVICES CAPABLE OF TRANSFORMING MECHANICAL ENERGY INTO ELECTRIC ENERGY - This electricity producing installation ( | 07-04-2013 |
20130175870 | WIND FARM AND METHOD FOR OPERATING A WIND FARM - Operating a wind farm in which the power generated by the wind energy installations is fed to a power supply system via a system internal to the wind farm and via a substation is disclosed. The farm director of the wind farm can ascertain a standard target voltage value and transmit it to the control units of the individual wind energy installations on the wind farm, which can use an overall factor to regulate the reactive power generated by a wind energy installation. The overall factor can be calculated from the difference between the actual voltage across the wind energy installation and the target voltage value, multiplied by a gain factor. On account of the impedance in the internal system of the wind farm, wind energy installations situated far away from the substation thus generate less reactive power than the wind energy installations which are situated close to the substation. | 07-11-2013 |
20130293023 | PARALLEL LINKAGE FOR GENERATORS - Three or more portable generators are linked for synchronized operation. Power cables link each generator to a linkage box which connects the power in parallel and connects an outlet thereto. Communication cables link a software module in each generator with the linkage box. The modules vary the generator operation to generate a voltage amplitude and phase matching that of the first generator that is connected to the box that begins power generation, so that all generators share the load equally until their power output limits are reached. | 11-07-2013 |
20130342020 | FUEL EFFICIENCY OPTIMIZATION FOR MICROGRID SYSTEMS EMPLOYING MULTIPLE GENERATORS - A system designed to optimize fuel efficiency of a power grid includes a set of controllable generators designed to supply power to the power grid. Each generator in the set is associated with a controller, a set of loads designed to draw power from the power grid, and a grid controller designed to provide a load partitioned configuration for the set of controllable generators, based at least partly on the power draw of the set of loads. | 12-26-2013 |
20130342021 | DISTRIBUTED SOLAR POWER PLANT AND A METHOD OF ITS CONNECTION TO THE EXISTING POWER GRID - Methods and apparatus are provided for using a renewable source of energy such as solar, wind, or geothermal energy. In some embodiments, the method may include generating electric energy from a renewable form of energy at a plurality of locations at which reside an electric power line associated with an electric power grid. The electric energy generated at each location may be transferred to the electric power line to thereby supply electric energy to the electric power grid. | 12-26-2013 |
20140145511 | CONTROLLING DYNAMIC SYSTEMS BY MEASURING THE NO-LOAD VOLTAGE OF A PHOTOVOLTAIC GENERATOR - The dynamic system is part of a dynamic apparatus having at least one photovoltaic generator, at least one battery and at least one device for controlling the dynamic apparatus. The method for controlling the dynamic system on the basis of sunlight involves electrically isolating the photovoltaic generator from the battery, reading the no-load voltage of the photovoltaic generator, determining a numerical value on the basis of the no load voltage, corresponding to the no-load voltage reading, and comparing the predetermined numerical value with at least one reference threshold value. When the predetermined numerical value corresponds to a value range limited by at least one such reference threshold value the dynamic system is controlled so as to thereon confer a configuration corresponding to the value range. | 05-29-2014 |
20140152112 | CONTROL METHOD AND CONTROL SYSTEM FOR PARALLEL OPERATION OF DIFFERENT TYPES OF POWER GENERATION APPARATUSES - A parallel operation control method for different type power generation apparatuses to shift the power generation apparatuses having respective different drooping characteristics, in which the drooping characteristic is defined as a characteristic of decrease of a rated frequency along with an increase of a load, from independent operation of the power generation apparatuses under suitable drooping characteristics to parallel operation thereof to drive a common drive target, includes determining a load of one of the power generation apparatuses by subtracting a load of the other of the power generation apparatuses from a predetermined required load; changing a drooping characteristic of the one of the power generation apparatuses so as to coincide with a drooping characteristic of the other of the power generation apparatuses; and controlling the one of the power generation apparatuses so as to maintain frequency at the time of changing the drooping characteristic. | 06-05-2014 |
20140167516 | CIRCUIT FOR ALLOCATING POWER AMONG GENERATORS - A circuit and method for allocating power among two or more generators to a single load on a shared bus includes a sharing regulator and a feedback loop for each generator. A digital share command input and current in the feedback loops will cause the sharing regulators to alter the power of the generators at the generator outputs, thereby allocating the load on the shared bus according to the share command, and confirming the allocation of power at the outputs. | 06-19-2014 |
20140175890 | METHOD FOR GENERATING INJECTED CURRENT OF FUEL CELL STACK AND APPARATUS PERFORMING THE SAME - Disclosed herein is a method for generating an injected current of a fuel cell stack performed in an apparatus for generating an injected current of a fuel cell stack, the method including: extracting a first frequency current and a second frequency current by passing alternating currents of different frequencies through a plurality of filters, respectively; generating a summed frequency current by summing the first frequency current and the second frequency current; and applying the summed frequency current to the fuel cell stack. Therefore, it is possible to operate the fuel cell stack by applying the summed current obtained by summing the alternating current for calculating the total harmonic distortion (THD) and the alternating current for calculating the impedance to the fuel cell stack. | 06-26-2014 |
20140232198 | CONTROL DEVICE FOR DAMPING GRID OSCILLATIONS - The invention relates to a method for damping grid oscillations. The oscillations may be damped by controlling e.g. wind turbine generators to inject power to the grid in anti-phase with the grid oscillations. Instead of controlling one or more wind turbine generators to generate the same anti-phase power signal, a plurality of wind turbine generators are controlled so that each of them only generates a part of the anti-phase power signal, but so that all of the wind turbine generators in combination generates the entire anti-phase power signal. | 08-21-2014 |
20140246914 | Sub-Synchronous Oscillation Damping By Shunt Facts Apparatus - A power distribution system comprising a point of common connection that receives electric power supplied by a first power generation system and a second generation system, with the second power generation system that comprises a renewable electric power generator; a transmission line operatively connected to the point of common connection for conducting the electric power between the point of common connection and an external AC electric network. The power distribution furthermore comprises a capacitive compensator connected in series with the transmission line to compensate for a reactive power component of the electric power conducted by the transmission line; and a shunt arranged flexible AC transmission system that mitigates a sub-synchronous resonance effect caused at least in part by the capacitive compensator. A flexible AC transmission system controller of the flexible AC transmission system comprises a damping effect on sub-synchronous oscillations included in the sub-synchronous resonance. | 09-04-2014 |
20140265608 | SYSTEM FOR PRODUCING AND DISTRIBUTING ELECTRICAL ENERGY OVER AN ELECTRICAL GRID, AND ASSOCIATED OPTIMIZATION METHOD - A system for producing and distributing electrical energy over an electrical network of a geographic area, includes a first entity for generating electrical energy, which operates in a steady state and generates at least a portion of the electrical energy; a second entity for intermittently generating the electrical energy from renewable energy; a third entity, which is capable of operating in a load-following state, the system being sized such that the profile of the change in total energy potential of the geographic area over the span of one year, corresponding to the sum of the profile of the change in the amount of electrical energy distributed by the main entity and the profile of the change in the amount of electrical energy generated by the second entity over the span of one year, is less than the profile of the change in the demand for electrical energy of the network. | 09-18-2014 |
20140333141 | PHOTOVOLTAIC (PV)-BASED AC MODULE AND SOLAR SYSTEMS THEREFROM - A photovoltaic (PV)-based AC module (module) includes a PV panel and a three-phase micro-inverter system attached to or integrated directly into the PV panel including a DC/AC inverter stage including first, second and third phase circuitry each having a plurality of semiconductor power switches. A first, second and third control input driver are coupled to drive control inputs of the plurality of semiconductor power switches in the first, second and third phase circuitry, respectively. The module can include a control unit coupled to drive the first, second and third control input driver, and a transceiver and antenna coupled to the control unit for implementing wireless communications. | 11-13-2014 |
20150022007 | WIND TURBINE GENERATOR CONTROLLER RESPONSIVE TO GRID FREQUENCY CHANGE - A wind turbine generator park ( | 01-22-2015 |
20150097437 | System and Method for Increasing Efficiency of Gensets in Micro-Grid Systems - A system and method for running a plurality of gensets in parallel in a micro-grid system is disclosed. The system and method may include at least one genset configured to run at a load factor of greater than sixty percent, the number of the at least one genset supplying power at any given time including a minimum or less than minimum number of gensets capable of meeting a demand imposed by a load. The system and method may also include a turbo compounding system associated with at least one of the at least one genset, each of the electric turbo compounding systems configured to increase fuel efficiency of the at least one genset. | 04-09-2015 |
20150102679 | Inertial response function for grids with high turbine penetration - A method for compensating at least partially a frequency deviation in a grid is provided in which a grid frequency is determined and the grid frequency is applied to a grid frequency criterion. If the grid frequency meets the grid frequency criterion, a determination is made as to a set of wind turbines from a wind turbine power plant fleet based on the grid frequency criterion, and a command for a transient frequency response is transmitted to the set of wind turbines. | 04-16-2015 |
20150381089 | POWER PLANT & ENERGY STORAGE SYSTEM FOR PROVISION OF GRID ANCILLARY SERVICES - The present invention relates to method for operating a power plant, with at least one wind turbine generator arranged for supplying power to an electrical grid, at least one energy storage device arranged for supplying power to the electrical grid, and a power plant controller, the method comprises, measuring repetitively measurement sets of at least one electrical parameter from the electrical grid, and calculating, in respect the measurement sets of the at least one electrical parameter, a change in active and/or a required change in reactive power at a point of common coupling, and calculating and dispatching of a first control reference signal to the at least one wind turbine generator and a second control reference signal to the at least one energy storage device, for providing ancillary service functionalities to the electrical grid. The invention also relates to a power plant with at least one wind turbine generator for supplying power to an electrical grid, at least one energy storage device for supplying power to the electrical grid, and a power plant controller for providing ancillary service functionalities to the electrical grid. | 12-31-2015 |
20160006256 | CONTROL SYSTEM AND METHOD FOR GENERATOR SETS - A control system for operating generator sets is disclosed. The control system may have control units to control operation of the generator sets. The control system may also have a data bus connected to the control units. Further, the control system may have load bus segments connected to the generator sets. The control system may also have at least one tie breaker arranged between two load bus segments to selectively connect the two load bus segments in a closed position and isolate the two load bus segments in an opened position. The at least one tie breaker may be connected to at least one of the control units. The at least one control unit may receive a first signal from the at least one tie breaker indicative of a position of the tie breaker and provide the first signal to another control unit via the data bus. | 01-07-2016 |
20160044775 | STATE-BASED ADJUSTMENT OF POWER AND FREQUENCY - Systems and methods for state-based adjustment of power and frequency are described. A primary generator of a system includes a primary power supply for supplying a primary radio frequency (RF) signal to an electrode. The primary generator further includes an automatic frequency control (AFC) to provide a first frequency input to the primary power supply when a pulsed signal is in a first state. A secondary generator of the system includes a secondary power supply for supplying a secondary RF signal to the electrode. The secondary generator also includes an AFC to provide a second frequency input to the secondary power supply when the pulsed signal is in the first state. The secondary generator includes an AFC to provide a third frequency input to the secondary power supply when the pulsed signal is in a second state. The system includes a digital pulsing source for generating the pulsed signal. | 02-11-2016 |
20160065006 | Solar Energy Conversion and Transmission System and Method - A modular satellite for converting solar energy to microwave energy and transmitting the microwave energy to the earth to be converted into electricity includes solar panels configured to convert solar energy into direct current; a magnetron operatively connected to the solar panels to receive the direct current and configured to convert the direct current into microwave energy; a planar wave guide antenna operatively connected to the magnetron to receive the microwave energy and direct the microwave energy to a station on earth; and a coupling system for coupling with another satellite to form an array in response to at least one of locking, unlocking, and navigational commands. The satellite has a mass equal to or less than four kilograms, and a volume equal to or less than three liters. | 03-03-2016 |
20160118859 | ENERGY STORAGE MODULE COMPRISING A DC LINK - An energy storage module for the reversible storage of electric energy is provided that comprises several flywheel energy storage units that are electrically connected in parallel via a shared DC link. A first regulation system is connected to the DC link and that, during normal operation (NO), connects the DC link to one or more external power networks in order to absorb (En) energy from or release (Ep) energy into the external power network(s). A second regulation system includes an input side and an output side, whereby the input side is connected to at least the DC link while the output side is connected to an internal supply network for purposes of supplying one or more electrically powered operating aggregates that are needed to operate the flywheel energy storage units. | 04-28-2016 |
20170237262 | SAFETY DETECTION DEVICE AND METHOD OF GRID-CONNECTED INVERTER | 08-17-2017 |
20170237264 | SCALABLE ELECTRICAL POWER GENERATOR SET AND RELATED METHODS | 08-17-2017 |
20180026449 | System and Method for Controlling Outputs of Photovoltaic System | 01-25-2018 |
20220140614 | MOBILE HYBRID MICROGRID - A microgrid system includes a plurality of power sources and a switchgear trailer. Each power source includes an electrical output. The switchgear trailer includes a plurality of inputs and at least one output. Each input is electrically connected to a respective power source electrical output. The system may also comprise a controller configured to obtain one or more parameters of the plurality of power sources and control operation of at least one of the plurality of power sources or the switchgear trailer in response to the one or more parameters. | 05-05-2022 |