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| Number | Title | Issue Date |
| 8110948 | Power conversion apparatus and method A power conversion apparatus includes an interfacing circuit that enables a current source inverter to operate from a voltage energy storage device (voltage source), such as a battery, ultracapacitor or fuel cell. The interfacing circuit, also referred to as a volta... | 02/07/2012 |
| 8089179 | Hybrid aircraft electrical architecture with both variable and constant frequency generators An electrical generation system utilizes a variable frequency generator operating in combination with a constant frequency generator. Also disclosed and claimed are an aircraft electrical architecture, and a gas turbine engine incorporating the above electrical gene... | 01/03/2012 |
| 8053932 | Connection apparatus for parallel running generators An apparatus for connecting two generators to run in parallel including a conductive path that connects the generators to an electrical load, a switching circuit that opens/closes the conductive path, a current sensor that detects current flowing the conductive path... | 11/08/2011 |
| 8039992 | Series connection apparatus for generators In an apparatus for series-connecting at least two engine generators driven by an internal engine and each generates and outputs alternating current through single-phase two-wire output terminals, there are equipped with a magnetic coupler such as transformer that c... | 10/18/2011 |
| 7994658 | Windfarm collector system loss optimization A windfarm system is provided that is optimized for minimizing electrical loss. The windfarm system includes a plurality of wind turbine generators and a collector system including a conductor or network of conductors. The collector system also including a plurality... | 08/09/2011 |
| 7939970 | Variable frequency wind plant A method and system for reducing the cost of a combined offshore wind generation plant is provided by coupling the AC output of plural wind turbine generators to a single AC-DC converter prior to transmission of the DC power to an onshore DC-AC inverter site. The wi... | 05/10/2011 |
| 7936092 | Method and device for providing a supply voltage by means of generator units connected in parallel A method and a device are provided for providing a supply voltage for the consumers of a vehicle electrical system, using generator units connected in parallel. The measurement voltage inputs and the monitor outputs of the controllers of the generator units are used... | 05/03/2011 |
| 7839024 | Intra-area master reactive controller for tightly coupled windfarms A wind turbine generator control system is provided for controlling output of a plurality of tightly-coupled windfarms connected at a point of common coupling with a power system grid. A master reactive control device employs algorithms whose technical effect is to ... | 11/23/2010 |
| 7808126 | Wind farm and method for controlling the same A method for controlling dynamic power factor or the reactive power of a wind farm is provided. The wind farm comprises a number of wind turbines connected to a utility grid driven with a requested power factor or a requested reactive power. The wind turbine output ... | 10/05/2010 |
| 7808127 | Multile input channel power control circuit The disclosed apparatus and systems are adapted to implement dynamic power control in order to condition and store, and/or immediately utilize, energy from one or more available power inputs, whether the inputs are constantly, regularly, or intermittently available,... | 10/05/2010 |
| 7692335 | Method and apparatus for mechanical phase synchronization of multiple AC generators An apparatus performs mechanical phase synchronization of multiple AC generators in an electrical power distribution system. The apparatus according to one embodiment comprises a gearbox mechanically coupled to a prime mover, multiple AC generators, each having a ro... | 04/06/2010 |
| 7679219 | Power supply device Power supply devices for vehicle electrical systems in particular, including two voltage systems, i.e., vehicle electrical systems, each having its own generator. The first generator and the battery belong to the same voltage system, and the second generator belongs... | 03/16/2010 |
| 7656060 | Power system with method for adding multiple generator sets A method of operating a power system is provided. The power system has a plurality of generator sets and a bus. The method monitors the bus and generator sets disconnected from the bus. The method supplies to a control device information associated with the operatin... | 02/02/2010 |
| 7649282 | Wind park and method for the operation of a wind park A wind park with a plurality of wind energy plants, which each have one plant control, which presets a desired value for the active power to its wind energy plant, and with a park control, which presets a desired value for the active power to be generated for each p... | 01/19/2010 |
| 7619324 | Power system with multiple generator sets A method of operating a power system is provided. The power system may have a plurality of generator sets and a power line. The method may include commanding a plurality of the generator sets that are disconnected from the power line to start generating electricity.... | 11/17/2009 |
| 7545056 | Saturation control of electric machine The invention includes an electric alternator/motor 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, one of which includes a saturable portion in which saturat... | 06/09/2009 |
| 7439634 | Electrical starting, generation, conversion and distribution system architecture for a more electric vehicle A system (200) for distributing electrical power, includes: a first high voltage AC power distributing unit (210a) including a first high voltage AC bus (214a-1, 214a-2), which is selectively connected to a fir... | 10/21/2008 |
| 7400065 | Electrical power distribution system and method with active load control An electrical power distribution system is provided. The electrical power distribution system includes: a first AC power source (1a); a second AC power source (1b); a first DC bus (6a); a first AC to DC rectifier (5 | 07/15/2008 |
| 7349446 | Signal superimposition A method and apparatus are provided in which control data for a generator system is multiplexed onto a synchronization signal. ... | 03/25/2008 |
| 7309938 | Rotary power converter A rotary power converter apparatus for coupling power between a prime driver and plural generators. The apparatus includes a frame having a first and second bearing aligned along an axis of rotation and a rotor assembly supported thereby. The rotor assembly includes... | 12/18/2007 |
| 7304403 | Power signaling based technique for detecting islanding conditions in electric power distribution systems A signaling system for detecting power line discontinuity in a power distribution system having a local power generator in a feeder line employs a signal generator that provides a local generator control signal with a preset protocol continuously and is located in t... | 12/04/2007 |
| 7301247 | Power supply device incorporated in vehicle driven by internal combustion engine A power supply device incorporated in a vehicle driven by an internal combustion engine including: a first power supply system for driving a vehicle load that converts an output of a generation coil provided in a generator driven by an internal combustion engine int... | 11/27/2007 |
| 7262520 | Robust power distribution systems and methods The present invention provides systems and methods that allow for individual power sources to be disconnected and reconnected without interrupting the power supply from the other power sources and that allow for these power sources to provide power at substantially ... | 08/28/2007 |
| 7245030 | Integrated generator and transformer and associated methods An electrical power generating apparatus (20) may include a housing (22), an electrical generator (24) within the housing, and a step-up transformer (30) within the housing and connected to the electrical generator. A turbine (26) ... | 07/17/2007 |
| 7218014 | Wind energy system, as well as a method for operating such a wind energy system Systems and methods of the present invention are directed to wind energy. Wind rotors (1) drive at least two generators (2) which each have a corresponding rectifier unit (3). The rectifier unit (3) being an active rectifier having drivab... | 05/15/2007 |
| 7183668 | Generator with current and voltage abnormality detection A detecting means easily detects the abnormality of a generator having a plurality of power supply units. Each of the power supply units includes one of a plurality of output windings L1 to L4, which are wound independently of each other around single ... | 02/27/2007 |
| 7161330 | Energy discharge apparatus There is provided an energy discharge apparatus for dissipating a quantity of stored magnetic energy in a generator field coil of a brushless generator. The apparatus includes an exciter regulator responsive to an output signal of the generator and which provides an... | 01/09/2007 |
| 7154249 | Energy discharge apparatus There is provided an energy discharge apparatus for dissipating a quantity of stored magnetic energy in a generator field coil of a brushless generator. The apparatus includes an exciter regulator responsive to an output signal of the generator and which provides an... | 12/26/2006 |
| 7145266 | Parallel-connected inverters with separate controllers having impedance current regulators A control system (20) for a power converter (22) designed to convert DC power from a source (30) such as a battery, flywheel or fuel cell into AC power. The control system includes an impedance current regulator (106) for providing an imp... | 12/05/2006 |
| 7116010 | Control of small distributed energy resources A power electronics interface in a microsource controller allows efficient connection in a power system of small, low cost and reliable distributed generators such as microturbines, fuel cells and photovoltaic. Power electronics provide the control and flexibility t... | 10/03/2006 |
| 7088011 | 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 el... | 08/08/2006 |
| 6987331 | Voltage recovery device for use with a utility power network A voltage recovery device is configured to provide reactive power to a utility power network at a level and for a duration sufficient to recover the voltage on the utility power network within a predetermined proportion of the nominal voltage, following a fault cond... | 01/17/2006 |
| 6937484 | Inverter controlled generator apparatus A plurality of control power sources of voltage specifications different from one another are constructed. A generator output converted by a converter into a DC current is converted by an inverter into an AC current of a predetermined frequency. The generation outpu... | 08/30/2005 |
| 6907800 | Shaftless gyrostabilizer for aerial platforms Gyrostabilizer methods and apparatus having simultaneously counter-revolving masses that do not require physical shafts or axles. The stabilizer can have dual counter-revolving concentric rings, or tracks filled with weights such as spherical balls, that are propell... | 06/21/2005 |
| 6833635 | Dual input DC-to-DC power converter A dual input power converter. The dual input power converter includes a transformer, a first primary circuit, and a second primary circuit. The transformer includes a first primary winding and a second primary winding. The first primary circuit is for coupling a fir... | 12/21/2004 |
| 6747372 | Distributed control method for multiple connected generators An energy generation network according to the present disclosure includes energy generating elements organized in a tree structure of superior and inferior system levels, with control systems and a communication network. In a currently preferred embodiment, energy g... | 06/08/2004 |
| 6700222 | Power transfer system Solid state switching devices, such as power IGBT's, are used to switch a load from one AC generator to another. The switching is controlled to occur only when the phase and voltage of the two generator outputs are within acceptable limited, thus minimizi... | 03/02/2004 |
| 6639331 | Parallel generator power system A system for connecting one of a plurality of parallel connected generator sets to a common bus. The system includes a separate module associated with each of the plurality of generator sets. When a control module receives a ready-to-load signal from the ... | 10/28/2003 |
| 6614132 | Multiple flywheel energy storage system An electrical energy storage system for supplying power to a load comprises a plurality of flywheel energy storage systems, each supplying a power output signal, and a connector circuit. The connector circuit connects the flywheel energy storage systems t... | 09/02/2003 |
| 6605880 | Energy system providing continual electric power using wind generated electricity coupled with fuel driven electrical generators The process provides constant electric power from a combination of a wind energy generator and a firm secondary generator. The wind energy generator and the secondary generator supply electricity directly to a utility transmission system. The secondary ge... | 08/12/2003 |
