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7573160 |
Methods and apparatus for controlling windfarms and windfarms controlled thereby
A method for controlling power produced by a windfarm includes regulating active power produced by the windfarm in accordance with an apparent power setpoint, and regulating a power factor of the...
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7573155 |
Systems and methods for distributing loads
Systems and methods for adjusting outputs of dynamoelectric devices, such as alternators, are provided. The outputs of the dynamoelectric devices may be balanced to facilitate load sharing among...
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7566992 |
Method and apparatus for operation of a power station
A power station comprises a power-consuming shaft run on which a motor and a compressor are arranged, as well as a power-emitting shaft run on which a generator and an expansion machine are...
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7564147 |
Electrical power distribution system and method with active load control
An electrical power distribution system and a method of implementation are provided. The electrical power distribution system includes: a first AC power source; a second AC power source; a first DC...
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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...
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7525217 |
Rectifier-super capacitor device for use in a power system for a telecommunication facility
The present invention is a device that includes a rectifier and a super capacitor packaged together in a single housing. The device has a first connection point that is coupled to the rectifier...
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7480066 |
Modulated video waveform generator
A video controller includes a video block that connects to the print control engine and one laser driver. The video block includes a direct memory access (DMA) block, a video processor, a waveform...
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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 ( 210 a ) including a first high voltage AC bus ( 214 a - 1, 214 a - 2 ), which is...
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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...
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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...
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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...
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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...
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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 L 1 to L 4 ,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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6405114 |
Aerial work platform boom having ground and platform controls linked by a controller area network
An aerial work platform supported by a riser boom, a telescoping main boom, and a jib boom. Boom movement may be controlled by a platform control module or a ground control module connected to a...
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6320280 |
Electronic device fitted with power generators
An electronic device has a housing having a first transparent surface and a second transparent surface opposite to the first transparent surface. A timepiece movement is disposed in the housing and...
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6278262 |
Auxiliary power unit system and method of operating an auxiliary power unit
An auxiliary power unit ("APU") system and methods used to bring such system on-line and off-line are disclosed. An APU generator forming part of an APU system, is brought "on-line" smoothly in...
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6239513 |
Emergency supplemental power supply for outage protection of critical electric loads
An emergency supplemental power supply for outage protection of critical electric equipment load powered from a commercial power grid, including a first Variable speed drive, a second Variable...
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5816870 |
Electric drive system
An electric drive system for launches and sailboats utilizing standard three-phase industrial motors, directly driving low speed propellers without the use of gearboxes. The motor is driven with a...
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5729059 |
Digital no-break power transfer system
A power transfer control system for use in an AC electric power generation system comprises a generator control unit (GCU) which senses and controls the output of a generator, and a bus power...
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5684690 |
Integrated electrical power supply system for propulsion and service control
Engine driven turbines respectively drive separate propulsion and service ternators to supply power to propulsion motors and service equipment on naval combat ships through propulsion and service...
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5612579 |
Power distribution center
An electric power distribution center for use on aircraft comprises a space frame having a first surface defining a plurality of sockets, and a second, generally parallel, surface defining a...
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5514223 |
Dual discharge photovoltaic module
A dual discharge photovoltaic module responsive to high and low loads. The module includes a first plurality of series connected, high short circuit current cells, and a second plurality of series...
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5502340 |
Measuring process for obtaining a switching command in a rapid changeover device
A measuring process for obtaining a switching command in a rapid changeover device in which an abrupt change in the voltage in a consumer device is detected and a voltage difference is formed using...
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5289106 |
Electrical supply system for low current loads
An electrical supply system (10) for use with low current loads (12) disposed in hazardous areas, is described. Electricity is supplied to the low current load (12) from a local source (46) in...
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5254936 |
Dual generator electrical system
A motor vehicle power supply system for supplying current to the direct voltage loads on a motor vehicle. The system has two alternating generators which are driven by the engine of the motor...
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5233229 |
Device for supplying voltage in a motor vehicle having parallel connected generators
A device for supplying voltage to at least one consuming device in a motor vehicle including two parallel generators, two voltage regulators associated with each of the generators, two batteries...
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5194757 |
Uninterruptible power supply
Each of at least two asynchronous generators connected to a common electrical load for uninterruptibility of the power supply is driven by a corresponding one of at least two drives in such a way...
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5097194 |
Motor with plural generators set
An electric generating system is provided and consists of a generator mechanically operated by a starter motor in which the generator operates a battery charger to recharge a battery that can...
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5097165 |
Dual generator system with floating higher voltage output
An ac generator system for a motor vehicle has a first voltage generating device (115-119) for producing a first output voltage and a second voltage generator device (105-109) for producing a...
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5077485 |
Voltage regulator load division using real and reactive generator output power components to control the exciter
The problem for distributing load equally between multiple generators (34) in multi-channel generating systems is resolved using a voltage regulator (60) including a reactive load division loop...
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5073902 |
Device for receiving information travelling on two capacitively coupled information transmission lines, in particular for a motor vehicle
A device including a comparator (3) each input of which receives signals from an information transmission line (1, 2) through a capacitor (4, 5), is characterized in that devices for forced...
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5019718 |
Frequency insensitive digital phase angle measuring circuit
The problem of stabilizing operation of a load division control (74) is resolved using a phase angle counter circuit (90) which calculates phase angle insensitive to frequency changes of the output...
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5003161 |
Combination of an igniter for a gas furnace and a control unit therefor
The combination of a heating element and a control unit therefor and methods of making and of operating the same are provided, the heating element normally being adapted to be operated by the...
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4967097 |
Hybrid power system
A hybrid power source includes a constant speed drive having an input coupled to a prime mover which develops variable speed motive power, an output driven at a substantially constant speed and a...
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4965463 |
Flat frequency, constant voltage power source device
A flat frequency, constant voltage power source device is provided for parallel operation of a plurality of electric generators. The generators include exciting windings of induction motors...
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4937463 |
Flat frequency, constant voltage power source device
A flat frequency, constant voltage power source device provided for parallel operation of a plurality of electric generators is arranged to have a starting sequence determination means which...
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4935689 |
Vehicle mounted engine generator system
A vehicle mounted engine generator system is disclosed for supplying electricity to external electrical appliances and equipment used inside a camping car or outdoors in the camping site, which...
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4935606 |
Method of operating gas furnace igniter
The combination of a heating element and a control unit therefor and methods of making and of operating the same are provided, the heating element normally being adapted to be operated by the...
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4900944 |
Booster unit for diesel electric locomotive
A booster unit for diesel electric locomotive having a frame-mounted diesel engine, a main traction generator and a series of traction motors connected to said generators is disclosed. It is...
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4829228 |
Dual generator electrical system
A motor vehicle electrical system that has two alternating current generators for supplying current to the electrical loads on the vehicle including a storage battery. Both alternating current...
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4800291 |
Electronic circuit for control of a voltage regulator of an electrical generator
An electronic circuit for use with an electrical generator having a voltage regulator which responds to raise or lower control signals to change the voltage output of the generator. The electronic...
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