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| Number | Title | Issue Date |
| 8138730 | Voltage controller for vehicle using averaged status signal In a voltage controller for a vehicle, voltage controlling means controls an output voltage of a power generator mounted on the vehicle and a terminal voltage of a battery connected to the power generator, by controlling of a field current passing through a field wi... | 03/20/2012 |
| 8129957 | Alternator voltage regulator with maximum output limiting function An alternator system includes a field circuit, a regulator that regulates a field circuit electrical flow through the field circuit, and an output current sensor that detects an actual current output from the alternator system. The alternator system further includes... | 03/06/2012 |
| 8085002 | Shore power transfer switch A vehicle includes a mobile electric power generation system including a mobile power source such as a generator. An external power interface is included to connect to an external electrical power source. An AC electric power distribution bus is included to power el... | 12/27/2011 |
| 8072190 | Permanent magnet generator control A method of and a system for controlling a permanent magnet AC generator (10), wherein the generator is provided with stator windings and permanent magnets in the rotor and wherein the generator is connected to a drive unit (50), wherein the generator ... | 12/06/2011 |
| 8054050 | Circuit and method for reducing a voltage being developed across a field winding of a synchronous machine In an electrical power system of a diesel powered system having at least one diesel-fueled power generation unit, the electrical power system configurable in a starting mode for cranking the diesel fueled power unit, the electrical power system having a synchronous ... | 11/08/2011 |
| 8026699 | Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation A frequency converter circuit for a double-fed asynchronous generator with a variable power output, which can be connected to a voltage network contains a rotor rectifier, which can be connected to the rotor of the asynchronous generator, a network frequency convert... | 09/27/2011 |
| 7956584 | Electric power generation system with multiple alternators driven by a common prime mover An apparatus includes a vehicular electric power generation system comprising a variable speed internal combustion engine, a first variable speed electric power generator driven by the engine, a second variable speed electric power generator driven by the engine, a ... | 06/07/2011 |
| 7911188 | Power generation control apparatus of a rotating electrical machine for a vehicle A power generation control apparatus of a rotating electrical machine for a vehicle is obtained which achieves load response control in a plurality of electric power generation control modes even if a generation voltage final target value rapidly changes. The appara... | 03/22/2011 |
| 7884581 | Active damping for synchronous generator torsional oscillations A generator control unit (GCU) provides active damping of a synchronous generator by monitoring the speed of the synchronous generator and detecting oscillations in the monitored speed. The oscillations are indicative of torsional oscillations within the mechanical ... | 02/08/2011 |
| 7868594 | Generating unit and method for producing a current with a predetermined network frequency A drive is embodied to drive a rotor at a variable rotational frequency; the rotor has a winding that is embodied to produce a rotary field magnetomotive force of a generator, with a rotor rotary field frequency which is variable in relation to the rotor; the freque... | 01/11/2011 |
| 7863868 | Generator with quadrature AC excitation A generator system is configured to supply two phase excitation current from an exciter rotor to a main generator rotor. When driven by a variable speed prime mover, the generator system provides relatively constant frequency AC power by independently controlling th... | 01/04/2011 |
| 7808215 | Active damping for synchronous generator torsional oscillations A generator control unit (GCU) provides active damping of a synchronous generator by monitoring the speed of the synchronous generator and detecting oscillations in the monitored speed. The oscillations are indicative of torsional oscillations within the mechanical ... | 10/05/2010 |
| 7764052 | Voltage adjusting circuit, and motorcycle including voltage adjusting circuit A voltage adjusting circuit prevents damage to an electrical component having no over-voltage protecting circuit when a battery is removed. An LED tail light is connected to an over-voltage protecting circuit of a CDI unit. Electric power is supplied from a power su... | 07/27/2010 |
| 7692412 | Charging control apparatus, charging control method A charging control apparatus is adapted to control an alternator which is operable to generate a voltage to charge a battery which is operable to supply the voltage to an electric component. An interface is connected to the alternator, the battery, and the electric ... | 04/06/2010 |
| 7609035 | Power generation control device for controlling power generation system of movable body and power generation control method A power generation control device enables to conduct appropriate charge control and load limitations even if a technique (charge control technique) for restricting power generation by a generator in an accelerating state of a movable body is adopted in a movable bod... | 10/27/2009 |
| 7554302 | Slip-controlled, wound-rotor induction machine for wind turbine and other applications A system and method for providing constant-frequency electrical power from variable-speed mechanical power are disclosed. The system includes a wound-rotor induction machine generator (WRIMG), a first power converter, e.g., an inverter or a bridge rectifier, that pr... | 06/30/2009 |
| 7459890 | Method and circuit for controlling an electric power plant A control circuit is for an electric power plant including an asynchronous generator of an AC voltage, a motor to rotate a rotor of the asynchronous generator as a function of a first control signal of a developed motor torque, and a bank of capacitors coupled to th... | 12/02/2008 |
| 7443143 | Controller of AC generator for vehicle A controller of a generator for a vehicle in the invention includes a battery voltage detecting circuit and an output terminal voltage detecting circuit of an AC generator. A value of a detected voltage of the output terminal voltage of the AC generator is set to be... | 10/28/2008 |
| 7432686 | Wind turbine generator apparatus with utility fault ride-through capability A wind powered turbine with low voltage ride-through capability. An inverter is connected to the output of a turbine generator. The generator output is conditioned by the inverter resulting in an output voltage and current at a frequency and phase angle appropriate ... | 10/07/2008 |
| 7378820 | Electrical power generation system and method for generating electrical power An electrical power generation system and method for generating electrical power are provided. The electrical power generation system utilizes a master controller for controlling operation of devices coupled to an AC electrical grid and DC electrical grid based on p... | 05/27/2008 |
| 7348702 | Apparatus and method for flywheel based cooling In accordance with exemplary embodiments, the present invention provides a transient power source that includes a flywheel that stores kinetic energy. In the event of a loss of main or operating power, the kinetic energy stored in the flywheel is converted into elec... | 03/25/2008 |
| 7332895 | Regulator for eliminating noises generated by automotive power generator A regulator for eliminating noises generated by an automotive power generator is composed of a front-end circuit, a semiconductor power element, a resistor, and a capacitor. The front-end circuit includes a plurality of electronic components for offering control sig... | 02/19/2008 |
| 7332827 | Method for controlling a power-grid connected wind turbine generator during grid faults and apparatus for implementing said method The present invention relates to a method and an apparatus for controlling a power-grid connected wind turbine generator during grid faults. During grid faults, the stator windings of the wind turbine generator are disconnected from the power grid and impedances for... | 02/19/2008 |
| 7321221 | Method for operating a wind power plant and method for operating it A method of operating a wind turbine, wherein the wind turbine may include rotor windings of an induction generator, which includes stator coils coupled to a voltage grid, fed with rotor currents by a feed-in unit are driven by a rotor of the wind turbine; wherein t... | 01/22/2008 |
| 7319307 | Power balancing of multiple synchronized generators Power balancing techniques for a synchronous power generation system are provided. One exemplary method for balancing power in a synchronous generator system includes determining an output power characteristic of a synchronous generator driven by a prime mover and c... | 01/15/2008 |
| 7312550 | Architecture for electric machine In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a mul... | 12/25/2007 |
| 7292008 | Electric generation control apparatus for vehicle alternator An electric generation control apparatus for a vehicle alternator receives an electric generation control signal transferred from an ECU placed apart from the control apparatus through a data transfer line. The control apparatus has a voltage comparator, a communica... | 11/06/2007 |
| 7292011 | Electrical protection of a generator controller A generator system includes a generator control for providing electrical power to a main generator. The main generator is mechanically coupled to an electrical power source that provides electrical power to the generator control during operation of the main generato... | 11/06/2007 |
| 7292009 | Hybrid type working machine Simplifying the controller of hybrid type drive unit. The output of a generator driven by engine is connected directly to a motor 7 through a converter or switching circuit 10 without being charged on any battery. The output of each phase of the genera... | 11/06/2007 |
| 7288923 | Voltage-limited electric machine An electric alternator having a rotor, stator and at least one winding in the stator adapted to conduct a current, the machine also having and first and second magnetic circuits around different portions of the winding which may be configured relative to one another... | 10/30/2007 |
| 7285937 | Electric generation control apparatus for vehicle alternator An electric generation control apparatus for a vehicle alternator receives an electric generation control signal transferred from an ECU placed apart from the control apparatus through a data transfer line. The control apparatus has a voltage comparator, a communica... | 10/23/2007 |
| 7276882 | Regulator control circuit and method Switching devices control the rectification and flow of alternating current power from a source such as an alternator to a load such as a battery in response to both the voltage of the battery and a minimum selected time period that is selected to eliminate or reduc... | 10/02/2007 |
| 7274125 | Current collector ring for a generator having balance resistors An electrical generator having a stator assembly and a rotor assembly is provided. The rotor assembly has a rotor member, a first collector ring, and first and second rotor coils. The first collector ring is disposed proximate an exterior surface of the rotor member... | 09/25/2007 |
| 7271571 | Anti-islanding protection systems for synchronous machine based distributed generators A system for providing anti-islanding protection of a synchronous machine based distributed generator includes a frequency sensor configured to generate a generator frequency signal, a bandpass filter configured for filtering the generator frequency signal, a govern... | 09/18/2007 |
| 7268522 | Excitation control for wound field synchronous dynamoelectric machines A wound field synchronous (WFS) dynamoelectric machine comprises: a rotor assembly; an exciter generator section comprising a stationary multiphase exciter stator winding for receiving excitation power from a multiphase alternating current (AC) source to generate an... | 09/11/2007 |
| 7235891 | Power system having generator driven by engine An apparatus for controlling the operation of power conditioners (10) for supplying the generated power to an external power system such as a commercial power system, in which power conditioners (10) are interconnected to an external power system, the ... | 06/26/2007 |
| 7233129 | Generator with utility fault ride-through capability A wind powered turbine with low voltage ride-through capability. An inverter is connected to the output of a turbine generator. The generator output is conditioned by the inverter resulting in an output voltage and current at a frequency and phase angle appropriate ... | 06/19/2007 |
| 7215100 | Generator transient regulator An apparatus for regulating a transient response of an output signal of an electrical generator. The apparatus comprises a tapped output winding means for providing a first AC signal and a second AC signal. The first and second AC signals have respective RMS values.... | 05/08/2007 |
| 7202637 | Distributed control method The present invention provides an improved control method and apparatus allowing units arranged at different spaced apart locations to be controlled without the need for a high bandwidth link between the units and the controller. This allows a single controller to c... | 04/10/2007 |
| 7196498 | Method and apparatus for generator control A generator control circuit is provided that includes a first circuit (44) monitoring a generator voltage change rate and producing a first output when the voltage change rate is above a first level, a second circuit (48) monitoring a generator current... | 03/27/2007 |
