| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 290007000 |
ELECTRIC CONTROL
| 1559 |
| 290054000 |
FLUID-CURRENT MOTORS
| 1547 |
| 290001000 |
MISCELLANEOUS
| 918 |
| 290052000 |
TURBOGENERATORS
| 433 |
| 290053000 |
TIDE AND WAVE MOTORS
| 403 |
| 290050000 |
BATTERY
| 85 |
| 290002000 |
HEATING PLANTS
| 63 |
| 290045000 |
TRACTION
| 33 |
| 290004000 |
PLURAL PRIME MOVER
| 26 |
| 290046000 |
STARTING AND GENERATING DYNAMO
| 24 |
| 290003000 |
TRAIN
| 12 |
| 290048000 |
ELECTRIC-STARTING MOTOR
| 11 |
| 290047000 |
ELECTRIC-STARTING MOTOR WITH GENERATOR
| 6 |
| 290051000 |
ENGINE CONTROL | 5 |
| 20090194996 | Water combustion technology - methods, processes, systems and apparatus for the combustion of Hydrogen and Oxygen - This invention presents improved combustion methods, systems, engines and apparatus utilizing H | 08-06-2009 |
| 20100327587 | FUEL GAS GENERATOR - A fuel gas generator includes: a combustion chamber generating thermal energy through combustion of air and fuel gas therein, and supplying the thermal energy to a thermal engine such that the thermal engine is driven to generate kinetic energy that is converted into electrical energy by an electric generator; a temperature sensor for generating a sensing signal indicative of a temperature in the combustion chamber; and a controller for controlling a flow valve coupled to the combustion chamber based on the sensing signal such that the flow valve is switched to an OFF state upon detecting that the temperature is higher than a first temperature, thereby supplying the air and the fuel gas to the combustion chamber therethrough, and to an OFF-state upon detecting that the temperature is lower than a second temperature lower than the first temperature, thereby ceasing supply of the air and the fuel gas to the combustion chamber. | 12-30-2010 |
| 20110074156 | Spark suppression for a genset - A method for operating a four-stroke internal combustion engine including a crankshaft coupled to a piston, which includes moving the piston in accordance with a sequence of four different strokes; mechanically driving an electric power generator with the crankshaft during the operating of the engine; generating a first sensor signal indicative of each revolution of the crankshaft with the crankshaft rotating twice during the sequence of four different strokes; providing a second sensor signal corresponding to a working fluid characteristic of the engine, the working fluid characteristic changing during the sequence of four different strokes of the piston; and timing ignition of the engine as a function of the first sensor signal and the second sensor signal. | 03-31-2011 |
| 20130043680 | CONTROL OF LOAD REJECTION - A control system is provided for a power generating system having a gas turbine, a flue gas exhaust stage and a blow-off valve assembly. The gas turbine includes a compression stage, a combustion stage and a driveshaft. The blow-off valve assembly is configured to selectively provide fluid communication between the combustion stage and the flue gas exhaust stage. The control system includes a controller configured to output a signal causing the blow-off valve assembly to provide the fluid communication in response to a sudden de-loading of the gas turbine. | 02-21-2013 |
| 20130270829 | POWER GENERATOR AND POWER GENERATING SYSTEM - A power generator according to an embodiment includes a propeller, a position detector, and a pitch controller. The propeller includes a plurality of blades whose pitch angle is changeable, and is rotated by a fluid. The position detector detects the rotational position of the propeller. The pitch controller performs pitch control processing for changing the pitch angle depending on the position of each of the blades specified by the rotational position of the propeller. | 10-17-2013 |
| 290005000 |
ALTERNATING CURRENT, ROTARY FIELD AND ARMATURE | 3 |
| 20080303279 | Generating Unit and Method For Producing a Current With a Predetermined Network Frequency - According to the invention, 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 frequency converter is electrically connected to the rotor winding; a regulating device comprises a recording element for measuring values of the generator, a calculating unit for a generator simulation, and a transmitter for transmitting a control signal to the frequency converter; and, on the basis of the control signal, an electrical excitation of the rotor winding can be triggered by the frequency converter in such a way that a pre-determined stator rotary field frequency is present in the event of a variable rotational frequency of the rotor and a variable rotor rotary field frequency | 12-11-2008 |
| 20110221191 | MECHANICAL REGULATION OF ELECTRICAL FREQUENCY IN AN ELECTRICAL GENERATION SYSTEM - There is provided an electrical generation system for producing an alternating electric current with a regulated frequency from motive power with variable speed. The rotor of an alternator is mechanically coupled to the motive power and thus rotates with a variable speed. In order to compensate for the rotor speed variation, the alternator stator is rotated about the rotor such that the relative speed between the stator and the rotor is regulated. The stator speed is controlled such that the frequency of the produced alternating current is regulated. | 09-15-2011 |
| 20130257048 | MOBILE ENVIRONMENT-CONTROLLED UNIT HAVING A MAGNETIC SENSOR FOR A HIGH-VOLTAGE ALTERTNATING CURRENT BUS - A mobile unit (e.g., a vehicle or a mobile environment-controlled unit) having a multiphase alternator, such as a three-phase alternator. The unit incorporates a Hall Effect current sensor to monitor all three phases of the high-voltage AC bus from the alternator. | 10-03-2013 |
| 290049000 |
ROTARY FIELD AND ARMATURE | 2 |
| 20080315587 | PYRAMID ELECTRIC GENERATOR - A pyramid electric generator for harvesting the vibrational energies of Earth's atomic oscillators according to the present invention comprises: (1) an antenna/waveguide that is geometrically optimized; (2) a secondary coil wound with an insulated conductor on a nonconductive coil form, the coil being attached electrically to the conducting surface of the antenna/waveguide such that the secondary coil is attached near the point at which the electric field contacts the antenna/waveguide; (3) the antenna/waveguide connected with the secondary coil serving as a quasi-capacitive series element to provide a specific resonant frequency; and (4) a primary coil of a few turns wound around the secondary coil, the secondary coil being positioned coaxially within the primary coil and acting as a resonant step-up transformer winding, inductively coupled with the primary coil. The generator resonantly couples into specific frequencies of Earth's atomic oscillators and extracts electric energy therefrom. | 12-25-2008 |
| 20100060004 | Frictionless Generator - New design of generator and or generators, which creates electricity. Using a sphere shape design compared to the traditional generator designs already in use today. Using a sphere shape design for the placements of the magnets and coil, triangular shape of the magnets, and a glass sphere filled with a gas, should allow for increase power output. This also allows for multiple layers to be used, dependent on power needs. | 03-11-2010 |
| 290006000 |
MULTIPLE-ARMATURE DYNAMO | 1 |
| 20090261586 | Dual Channel Power Generation System - A dual channel power generation system comprises: a prime mover; a permanent magnet (PM) dynamoelectric machine that has a PM rotor coupled to the prime mover, two multiphase alternating current (AC) stators that develop electromotive force (EMF) in response to rotation of the PM rotor due to the magnetic flux linkage between the PM rotor and the stators, two control coils that each change the magnetic flux linkage of a respective stator in response to the level of a control current that passes through the control coil; a multiphase AC rectifier for each stator that receives AC power from its respective stator to supply DC power on a respective rectifier bus; a current feedback loop for each rectifier bus; a voltage feedback loop for each rectifier bus; a load-sharing controller responsive to both current feedback loops to develop a voltage regulator reference signal for each rectifier bus that is representative of the value of voltage that its corresponding stator should produce to maintain equal values of current for both rectifier buses; and a voltage regulator for each rectifier bus responsive to its respective voltage feedback loop and voltage regulator reference signal to produce the control current for its respective control coil that changes the magnetic flux linkage of its respective stator to maintain the value of voltage that its corresponding stator should produce to maintain equal values of current for both rectifier buses. | 10-22-2009 |
