U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5687752

Dining Table Having Integral Dishwasher

A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 290/7 - ELECTRIC CONTROL


Subclass of Class 290 - Prime-mover dynamo plants
Definition: Prime-mover dynamo plants including control of, by or through
No. of patents: 59
Last issue date: 11/08/2011


1    
NumberTitleIssue Date
8053915On-vehicle rotary electric machine operating on two modes of rectification
A rotary electric machine for a vehicle includes a rotor, a stator and a rectifying device for current AC/DC conversion. The machine operates as a motor and a generator. The machine includes a multi-phase windings, switching elements forming a rectifying device, and...
11/08/2011
7795747Method and apparatus for moving material
A method and apparatus for moving magnetic material includes an electromagnet for attaching and detaching the magnetic material where upon release of the magnetic material, the residual magnetic flux of the released magnetic material is reduced. The apparatus includ...
09/14/2010
7687927Electrical systems architecture for an aircraft, and related operating methods
An electrical architecture for an aircraft is provided. The electrical architecture is particularly suitable for relatively small, compact, and lightweight aircraft. In one embodiment, the electrical architecture includes an electrical generator component coupled to...
03/30/2010
7446425Cooperative control apparatus
A cooperative control apparatus calculates the total electric load amount of a plurality of electrical loads (W), determines working states of the electrical loads (W), calculates a projected value of the total electrical load amount after a prescribed time, and eff...
11/04/2008
7417333Methods and apparatus for controlling current in an electrical machine
A method for determining electric currents for an electrical machine includes generating a first real power current demand signal and a first reactive power current demand signal. The method also includes determining at least one of a second real power current deman...
08/26/2008
7358620Methods and apparatus for ride-through operation of a complementary device to a transient power source
In accordance with certain exemplary embodiments, the present technique provides methods and apparatus for providing operating power to a complementary device to an induction device based uninterruptible power source (UPS) via a direct current (dc) bus. In one embod...
04/15/2008
7339284Apparatus for generating electrical power from tidal water movement
A tidally driven electricity generator (1) has a series of turbines (2), each of which is mounted under water in an offshore location. Each turbine (2) has blades (3) which are rotated by tidal flow of water, to power a respective generat...
03/04/2008
7336000Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine
A speed monitor for establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator. A speed detector detects speed data or a speed signal for a rotor or shaft associated with a turbogenerator. A turbogenerator controller co...
02/26/2008
7315089Powertrain system comprising compressed air engine and method comprising same
A powertrain system comprises a compressed air supply apparatus, a compressed air engine, a rotary power conversion apparatus and an electrical power conversion apparatus. The compressed air engine is configured for extracting energy from compressed air. The compres...
01/01/2008
7268443Wind turbine generator system
A wind turbine generator system can regulate the rotational velocity of the wind turbine within an operation range even when the wind velocity suddenly changes and can perform continuous operation of the wind turbine. The wind turbine generator system includes a gen...
09/11/2007
7245035Modular energy-generating system
The system comprises a main combined generating module which can be supplied with a flow of a fuel and which can generate electrical energy and thermal energy in the form of a flow of at least a first hot fluid, preferably water. The main module has an electrical ou...
07/17/2007
7242166Electric machine
A method and an apparatus are described for monitoring a rotating synchronous electric machine (9), which comprises a rotor winding and a stator having a stator winding. The method comprises the steps of determining the stator winding current, determining the...
07/10/2007
7233129Generator 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
7215098Electrical generating system having capacitative control of alternator regulation
The invention provides an electrical generating system comprising an AC electrical generator (G) having an output, and a capacitor arrangement (Ca) provided at the output of the generator and arranged so as to offset a drop of voltage from no-load to full-load occur...
05/08/2007
7212891Motor drive apparatus, hybrid vehicle drive apparatus using the same, and computer readable recording medium recorded with program for causing computer to perform control of motor drive apparatus
Upon detection of a fault in a DC power supply based on a voltage from a voltage sensor or a temperature from a temperature sensor, a control device controls inverters to cause AC motors to output zero output torque, and generates and outputs signals STP1, ST...
05/01/2007
7187088Power supply apparatus for electric vehicle
To provide a power supply apparatus for an electric vehicle wherein the insulation of a power supply line for supplying a drive voltage to an electric motor can be simplified and the cost for the insulation can be reduced. A power supply apparatus for an electric ve...
03/06/2007
7145262Wind turbine generator system
A wind turbine generator system is equipped with a three phase generator connected to a shaft of a windmill, a converter connected to a stator of the generator, and an inverter connected to the converter and also to an electric power system. The system extracts a to...
12/05/2006
7099756Motor drive apparatus, hybrid vehicle drive apparatus using the same, and computer readable recording medium recorded with program for causing computer to perform control of motor drive apparatus
Upon detection of a fault in a DC power supply based on a voltage from a voltage sensor or a temperature from a temperature sensor, a control device controls inverters to cause AC motors to output zero output torque, and generates and outputs signals to a voltage st...
08/29/2006
7095134Error recognition for power ring
A power ring device that includes: a ring conductor; a plurality of controllers, each controller being connected to the ring conductor and includes a first control unit; a plurality of paired pick ups, wherein each pair connects either an electrical consumer device ...
08/22/2006
7095132Wind turbine generator system
An object of the present invention is to minimize the torsional vibration caused on the shafting of the wind turbine genarator system so as to operate the windmill stably. A wind turbine genarator system according to the present invention, equipped with a syn...
08/22/2006
7088011Motor-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
7084600Power control apparatus for a turbo charger equipped with an assist motor and a motor driven turbo charging apparatus
A power control apparatus includes an inverter giving a rectangular waveform drive signal to an induction motor, an inverter voltage controlling section controlling an output voltage of the inverter, a converter boosting a voltage supplied to the inverter, a convert...
08/01/2006
7080449Method and a connector arrangement for connecting and disconnecting a generator to a circuit with an existing alternating current
A method and a connector arrangement for connecting and disconnecting an electrical generator, such as a prime mover driven alternator (10), to a circuit with an existing alternating current such as the mains electricity supply (20). ...
07/25/2006
7081734Ride-through method and system for HVACandR chillers
A method of providing ride-through capability in a chiller/refrigeration system employs a variable speed drive with an active converter stage, a DC link stage and an inverter stage for providing variable frequency and voltage to power at least one motor. An inductio...
07/25/2006
7045913Microturbine engine system
A microturbine engine that includes a compressor that is operable to provide a flow of compressed air. The compressed air flows through a recuperator where it is preheated before delivery to a combustor. The preheated compressed air mixes with a fuel and is combuste...
05/16/2006
7007487Recuperated gas turbine engine system and method employing catalytic combustion
A recuperated gas turbine engine system and associated method employing catalytic combustion, wherein the combustor inlet temperature can be controlled to remain above the minimum required catalyst operating temperature at a wide range of operating conditions from f...
03/07/2006
7006761Control device for DC motors
In order to design as inexpensively as possible a control device for DC motors which are provided with a commutator for feeding their motor windings which has at least four sliding contacts, this device comprising a modulation stage which generates at least one cont...
02/28/2006
7002259Method of controlling electrical rotating machines connected to a common shaft
A controller for high torque, low RPM wind turbines and ocean current turbines. The turbine consists of a large, input power shaft-mounted, rotating bull-gear with stationary powertrains mounted around its periphery. The gear teeth on the bull-gear rotate past the t...
02/21/2006
6958550Method and system for control of turbogenerator power and temperature
A power controller controls the turbine of a turbine powered generating system regardless of the load on the system to maximize the efficiency of the turbine and maintains the turbine at a substantially constant temperature during a system load change by using an en...
10/25/2005
6956301Method and apparatus for controlling output voltages and frequencies of turbine/alternator on common shaft
An electrical system and method for a turbine/alternator comprising a gas driven turbine and a permanent magnet alternator rotating on a common shaft includes an inverter circuit connectable either to an output circuit or the stator winding of the alternator. A cont...
10/18/2005
6949902Controller of rotating electric machine for vehicle
A controller of a rotating electric machine for a vehicle has a magnetic field electric current command arithmetic device for commanding a magnetic field electric current by the command of a torque and electric power command arithmetic device, an electric power conv...
09/27/2005
6930404Power supply for an automotive vehicle
An electrical system (12) is provided for an automotive vehicle (10) having a first power source (14) with a first positive terminal (16) and first negative terminal (18). A second power source (20) having a second positive ...
08/16/2005
6924627Method of reactive power regulation and aparatus for producing electrical energy in an electrical network
A method of reactive power regulation in an electrical network in which electrical power is produced by an electrical generator preferably driven by the rotor of a wind power installation and suitably modulated by means of a compensation device between the generator...
08/02/2005
6914344Integrated starter/generator for a turbomachine
The invention relates to a turbomachine of axis X including a compressor and an integrated starter/generator. The field magnetic circuit of the starter/generator is mounted in the bore of at least one disk of the compressor and surrounds the secondary magnetic circu...
07/05/2005
6909263Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element
A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p...
06/21/2005
6838779Aircraft starter generator for variable frequency (vf) electrical system
A starter-generator for an aircraft engine comprises a variable dynamoelectric machine alternatively operable as a motor or as a generator, having a rotor. A support motor is coupled to the variable dynamoelectric machine to assist the machine. A torque converter se...
01/04/2005
6819008Method for operating a switched reluctance electrical generator using data mapping
A method for operating a switched reluctance electrical generator in a manner that is highly efficient involves initially performing a mapping technique to obtain data relating to all of the possible operating conditions of the generator system that generate the des...
11/16/2004
6812587Continuous power supply with back-up generation
A continuous power supply may include a turbogenerator to provide power to supply the load and or an energy storage element and possibly also to the primary energy source. Utilizing an isolated DC bus architecture permits bi-directional power flow among interconnect...
11/02/2004
6759758Wind turbines for electrical power generation
Improvements to wind turbines for electrical power generation, incorporating a blade (4) rotor for harnessing the action of the wind, which consists of a hub (3) prolonged at the rear with an extension (7) that constitutes the assembly shaft for...
07/06/2004
6737756Power supply for an automotive vehicle using DC-to-DC converter for charge transfer
An electrical system (12) is provided for an automotive vehicle (10) having a first power source (14) with a first positive terminal (16) and first negative terminal (18). A second power source (20) having a second positive ...
05/18/2004
1    
 
Sign InRegister
Username  
Password   
forgot password?