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7605483 |
Integrated electrical power extraction for aircraft engines
An aircraft power system includes an aircraft engine having a plurality of engine spools, a plurality of AC generators driven by at least one spool, wherein each AC generator is independently...
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7508086 |
Aircraft engine starter/generator and controller
An aircraft starting and generating system includes a starter/generator that includes a main machine, an exciter, and a permanent magnet generator. The system also includes an...
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7468561 |
Integrated electrical power extraction for aircraft engines
An aircraft power system includes an aircraft engine having a plurality of engine spools, a plurality of AC generators driven by at least one spool, wherein each AC generator is independently...
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7061131 |
Method and system for optimizing energy storage in hybrid off-highway vehicle systems and trolley connected OHV systems
A hybrid energy system for propelling an off-highway vehicle includes an engine rated at a first power capacity, and a power converter driven by the engine for providing primary electric power. A...
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6590298 |
Electrical power generation unit for welding including electromechanical feedback mode regulation
The invention provides a method of providing a substantially stable supply of electrical energy under loading conditions. The method includes the steps of: 1. connecting a first generator...
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6522040 |
Palm top manual operated generator
A palm top manual operated generator includes a housing, a power generating unit, a driving set, a handle and a spring. The housing has a cambered rack which penetrates into the housing and is...
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6218813 |
Cross current compensation system and method
A cross current compensation system for controlling reactive currents in a generator is provided. A control system for receives voltage feedback from a first generator of a plurality of generators...
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6188139 |
Integrated marine power distribution arrangement
A marine power distribution arrangement includes a turbine-driven AC generator which supplies AC power at a frequency of 240 Hz through a switchgear unit to a transformer and a first power...
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6172427 |
Electric energy supply system for vehicle
An electric energy supply system for a vehicle includes a power output shaft electric power generation unit and an exhaust gas electric power generation unit for generating electric power by...
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6107691 |
Methods for utilizing the electrical and non electrical outputs of fuel cell powered vehicles
The present invention provides a method and apparatus for generating electrical power from multiple vehicles powered by fuel cells while the vehicles are parked in a parking lot. A plurality of...
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6066897 |
Automatic load distributing apparatus for generator and method of controlling same
An automatic load distributing apparatus for generators is of simple construction and occupies a small space and can automatically distribute loads evenly on respective engines upon parallel load...
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5828136 |
Combined power system using a rotation speed and torque detector
A combined power system includes an active power source and an auxiliary power source. The rotation speed signal of the active power source and the rotation torque difference between the active...
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5767584 |
Method for generating electrical power from fuel cell powered cars parked in a conventional parking lot
The present invention provides a method and apparatus for generating electrical power from multiple vehicles powered by fuel cells while the vehicles are parked in a parking lot. A plurality of...
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5646458 |
Uninterruptible power system with a flywheel-driven source of standby power
An UPS (uninterruptible power system) includes an UPS power conditioning unit that provides conditioned AC power to a critical load. The UPS power conditioning unit includes a variable speed drive...
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5550410 |
Gas turbine electrical power generation scheme utilizing remotely located fuel sites
A remote electrical energy generating and distribution system is provided wherein a plurality of combustion turbine generators are located at respective remote sites having deposits of fossil fuel....
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5536976 |
Multiple service load solid state switching for controlled cogeneration system
An electrical generation system and method for switching a plurality of isolated circuits between a generator and an electrical source. A current signal of each isolated circuit is sensed and the...
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5419112 |
Gas turbine powerplant
A double ender powerplant including a first engine having a compressor for producing a downstream axial flow, a combustor, a turbine coupled to the compressor through a shaft, and means for...
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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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4808835 |
Power generation cassette type power plant for marine electric propulsion and a controller thereof
A power generation cassette type power plant for marine electric propulsion includes a multiplicity of power generation units each being formed as a power generation cassette including a power...
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4752697 |
Cogeneration system and method
A cogeneration system including a heat engine driving an electrical generator coupled to electrical lines at a site serviced by a utility is disclosed. The system includes supervisory means for...
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4684813 |
Heterodyne system for electric power generation
Two high frequency AC generators are enabled to deliver a low frequency AC output to a load, by means of heterodyning and rectifying circuitry.
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4677307 |
Process for the realization of cogenerative supply of electricity and heat (cogeneration), particularly in industrial power plants
Subject of the invention is a process for the realization of cogenerative supply of electricity and heat, and in given case for their combination with waste heat recovery, particularly in case of...
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4572961 |
Constant speed drive with compensation using differential gears
The electrical supply system on aircraft may employ a constant speed drive (CSD) to convert variable engine speed to constant speed for operation of synchronous 400 Hz electrical generators. The...
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4521692 |
Motor generator shutdown circuit for extended ridethrough
This invention relates to device for detecting a threshold value of the frequency of an input signal. A gate signal is generated from the input signal, whose period has a relationship to the...
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4498014 |
Electric generating system
An electric generating system is provided and consists of an external power source, an expansion engine connected to the power source, a large generator electrically connected to output of the...
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4443707 |
Hydro electric generating system
A hydro electric generating system to produce power by changing the potential energy of water to kinetic energy to drive a turbine that is coaxially connected to a generator. Water from the ambient...
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4125780 |
Multiple fluid expansion energy extraction method and apparatus
This is a method, and an apparatus for performing said method, wherein the latent energy in expansible fluids is converted to mechanical or electrical energy or the like by the utilization of a...
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3902076 |
Generator monitoring circuit
A circuit for monitoring the output of a power generator is disclosed. The circuit utilizes a current sensing transformer for each of the three phases of the power generator. The current is sensed,...
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3651331 |
CONTROL INSTALLATION FOR A HYDRO-ELECTRIC POWER STATION
A control installation for a hydro-electric power station comprises slow-action integrated means for controlling the power outputs of each of a plurality of turbines to bring them to desired values...
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3173002 |
Method and apparatus for determining allocation of power inputs
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3001714 |
Economic power generation assignment devices
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2962598 |
Electric power control system
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2923832 |
Computation of generation requirements with compensation for power interchanges associated with stored energy changes
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2914680 |
Load regulator
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2909779 |
Magnetic amplifier controlled electric governor for prime movers
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2909670 |
Electric governor for prime movers
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2908826 |
Non-linear speed and load governor for alternators
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2878397 |
Multiple program control apparatus
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2839692 |
Electric power control system
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2836730 |
Economic loading of power systems
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2836731 |
Generation control system
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2831125 |
Generation control with normal-assist and emergency-assist actions
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2811651 |
Alternator control system
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2790090 |
Displacement sensing system for power plant control
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2783391 |
Load division control for prime movers
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2780733 |
Method and apparatus for controlling alternators
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