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| Number | Title | Issue Date |
| 7615948 | Controller for motor and control method for motor A controller for a motor and a control method for a motor change an operating condition of each motor, considering difference in operating conditions, such as loss and temperature, thus making it possible to reduce a total loss in a plurality of motors. The controll... | 11/10/2009 |
| 7605552 | Control apparatus for electric vehicles A motor control unit executes a system voltage stabilization control for suppressing variation in a system voltage by operating reactive power of a motor/generator unit including an AC motor, and executes a conversion power control to control the output power of a v... | 10/20/2009 |
| 7395143 | Transmission system with a continuously variable transmission ratio The system (CVT) includes a first electrical machine (M1) with a first rotor (R1) provided with a multiphase winding (W1) and fixed firmly to the shaft (1) of the internal combustion engine (ICE) and a second rotor (R2) or intermed... | 07/01/2008 |
| 7355292 | Power generation control apparatus for internal combustion engine An increment of a fuel consumption rate caused by power generation is determined from a difference in fuel consumption rate between a case of performing power generation of an alternator and a case of stopping the power generation. The increment of the fuel consumpt... | 04/08/2008 |
| 7316628 | Two speed transmission and belt drive system A two speed transmission comprising a planetary gear train comprising an input member connected to an input carrier, the input carrier connected to an input shaft, a sun gear and a ring gear, the input carrier comprising a plurality of planetary members each in mesh... | 01/08/2008 |
| 7308958 | Method for controlling a series hybrid electric vehicle A method for controlling a series hybrid powertrain for an electric vehicle. The hybrid vehicle includes a primary power source and an electric energy stored system. The method provides total system efficiency with a load-following control strategy. ... | 12/18/2007 |
| 7252165 | Hybrid electric vehicle A hybrid electric propulsion system for powering a vehicle using a natural fuel engine and an electric motor. The hybrid electric vehicle is comprised of a drive train; an electric motor for driving the drive train; an auxiliary power unit (APU); an electric energy ... | 08/07/2007 |
| 7218068 | Power source for re-circulation pump and method of controlling the same A variable-voltage variable-frequency power source for an electric motor that drives a re-circulation pump for a boiling water nuclear reactor. The power source has a semiconductor electric power converter and a speed controller for controlling the semiconductor ele... | 05/15/2007 |
| 7218070 | System and method for braking a motor of a propulsion unit The present invention relates to a propeller drive arrangement for vessels used in water-borne traffic, and specifically to a propeller drive arrangement containing a propulsion unit, and to such an arrangement, which contains a propulsion unit, which is turnable re... | 05/15/2007 |
| 7207404 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode A hybrid vehicle drive system including (a) an engine, (b) an electric motor, (c) a planetary gear device having a first rotary element connected to the engine, a second rotary element connected to the electric motor and connected through a first clutch to an output... | 04/24/2007 |
| 7168515 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode A hybrid vehicle drive system including (a) an engine, (b) an electric motor, (c) a planetary gear device having a first rotary element connected to the engine, a second rotary element connected to the electric motor and connected through a first clutch to an output... | 01/30/2007 |
| 7165638 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode A hybrid vehicle drive system including (a) an engine, (b) an electric motor, (c) a planetary gear device having a first rotary element connected to the engine, a second rotary element connected to the electric motor and connected through a first clutch to an output... | 01/23/2007 |
| 7064503 | Active noise compensation A method is for controlling a multi-phase electrical ship propulsion motor that is supplied with electric energy via a power converter. The ship propulsion motor is preferably a permanently excited motor with at least three windings. The phase currents flowing in th... | 06/20/2006 |
| 7042111 | System, method and apparatus for a redundant prime mover system The present invention provides a system, method and apparatus for a redundant prime mover system to drive a machine having an engine coupled to the machine, and a motor/generator coupled to the machine and an electrical network connection. The controller operates th... | 05/09/2006 |
| 7004273 | Hybrid electric vehicle A hybrid electric propulsion system for powering a vehicle using a natural fuel engine and an electric motor. The hybrid electric vehicle is comprised of a drive train; an electric motor for driving the drive train; an auxiliary power unit (APU); an electric energy ... | 02/28/2006 |
| 6998727 | Methods of operating a parallel hybrid vehicle having an internal combustion engine and a secondary power source The invention is directed toward methods for operating a parallel hybrid vehicle in a manner that responds to the operator's demand for power output, while maximizing engine efficiency and minimizing disruptions in vehicle drivability. According to principles of the... | 02/14/2006 |
| 6994177 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode A hybrid vehicle drive system including (a) an engine, (b) an electric motor, (c) a planetary gear device having a first rotary element connected to the engine, a second rotary element connected to the electric motor and connected through a first clutch to an output... | 02/07/2006 |
| 6969923 | Engine start control device, engine start control method and recording medium having program recorded thereon for implementing engine start control method An engine start system includes a starter starting an engine, a starter drive relay controlling the starter and an engine ECU connected to a starter switch for controlling on/off of the starter drive relay based on a predetermined start condition. The engine start s... | 11/29/2005 |
| 6958549 | Hybrid type driving apparatus An engine-driven generator G is concurrently used as a starter motor for an engine E that drives a working machine. A motor 25 for motive-power use is a driving source for the working machine to travel. The driving circuit 10 is commonly used between t... | 10/25/2005 |
| 6949897 | Control device for hybrid vehicle A control device for a hybrid vehicle which enables an appropriate electrical control based on the usable electrical energy stored in the battery device. In this control device, in step S357, in which it is determined whether the value of an energy storage zo... | 09/27/2005 |
| 6912451 | Control system for a redundant prime mover system The present invention provides a control system for a redundant prime mover system to drive a machine having an engine coupled to the machine, and a motor/generator coupled to the machine and an electrical network connection. The controller operates the engine and t... | 06/28/2005 |
| 6909199 | Method and apparatus for compensating output voltage fluctuations 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... | 06/21/2005 |
| 6864648 | Vector flux machine A motor that includes a stator that contains a first winding and a second winding driven by alternating currents. The rotor is arranged to rotate relative to the stator and contains a third winding and a fourth winding for generating a magnetic field with an amplitu... | 03/08/2005 |
| 6472845 | Motor/generator device An inverter (23) generates a composite current comprising an electrical current for a first rotor (4) and an electrical current for a second rotor (3). A microprocessor (22) controls the inverter (23) so that the average value of the composite current is ... | 10/29/2002 |
| 6465979 | Series compensation of electric alternating current machines A method and device for providing series compensation for rotating electric alternating current machines connected either directly, or via a static current converter, to a three-phase distribution or transmission network. The stator of the electric machin... | 10/15/2002 |
| 6351090 | Device for starting a gas turbine in an aircraft A device for starting a gas turbine in an aircraft includes an electrical power supply delivering a direct current and a drive electric motor connected to the power supply, independent of the turbine to be started and having an output shaft mechanically c... | 02/26/2002 |
| 6320350 | Modulation control type of AC machine A modulation control type of AC motor includes a modulator and a modulation motor. The modulation motor has the structure in which a DC field power source of a two-phase synchronous motor is replaced by a load and a DC main magnetic flux is replaced by an... | 11/20/2001 |
| 6201331 | Motor/generator Two rotors (3,4) and one stator (2) are arranged coaxially. The stator (2) comprises a coil unit (6) which produces, by the supply of a first alternating current, the same number of rotating magnetic fields as the number of magnetic poles of said first ro... | 03/13/2001 |
| 6198238 | High phase order cycloconverting generator and drive means An electrical generator, consisting of a high phase order generator and a high phase order cycloconverter. Output from said cycloconverter may be high phase order, three phase, single phase, or direct current. Output from said cycloconverter may be of arb... | 03/06/2001 |
| 6031352 | Active alternator load circuit A control apparatus controlling the operation of pulse width modulator for an electric clutch or electric motor in portable spray painting equipment having a pressure transducer for sensing the pressure, a manually adjustable pressure reference, a compara... | 02/29/2000 |
| 6020712 | Rotor control for synchronous AC machines An AC machine comprises: a motor energized by an AC source subject to irregularities of frequency and voltage; a generator driven by the motor for supplying an AC output signal of substantially constant frequency and voltage, the generator having a rotor ... | 02/01/2000 |
| 5796224 | Control system for electric vehicle An electronic control unit for controlling an inverter mounted between a main battery and a motor in an electric vehicle includes a feed-back control device which ensures that an actual electric power calculated from an electric current and a voltage inpu... | 08/18/1998 |
| 5789882 | Vehicle control apparatus adapted to select engine-or motor-drive mode based on physical quantity reflecting energy conversion efficiencies in motor-drive mode A drive control apparatus for an automotive vehicle having an electric motor and an engine operated by combustion of a fuel, the drive control apparatus including a drive source selecting device for selecting an engine drive mode or a motor drive mode on ... | 08/04/1998 |
| 5714851 | Serial hybrid drive arrangement for a motor vehicle The invention provides a hybrid drive arrangement, particularly for a motor vehicle, having an internal combustion engine, a generator, a rectifier, an inverter, an energy accumulator connected to the direct current line between the rectifier and the inve... | 02/03/1998 |
| 5642021 | Method and system for controlling an alternator to optimize direct current output A method and system for maximizing the output of an alternator in an automotive vehicle. An alternator is provided having a first rectifier connectable to a first output of the alternator to form a first winding configuration and a second rectifier connec... | 06/24/1997 |
| 5589743 | Integrated cranking inverter and boost converter for a series hybrid drive system An electric continuously variable drive system includes an ac motor, an alternator for supplying electrical power to the ac motor via a rectifier and an inverter, a heat engine for driving the alternator, an energy storage device for providing electrical ... | 12/31/1996 |
| 5550444 | Device and process for the reversible storage of electric energy by its reversible conversion to kinetic energy In the device, an electric motor is designed as a brushless, electronically commutated pancake motor (201) with permanent magnets arranged on the rotor and coreless windings arranged on the stator. Each winding is provided with a pair of terminals which c... | 08/27/1996 |
| 5428274 | Drive control apparatus of series hybrid vehicle A drive control apparatus for a series hybrid vehicle. The series hybrid vehicle includes an engine, a generator, a battery and a motor. The generator is activated by electricity from the engine so as to drive the motor. The battery is charged by the elec... | 06/27/1995 |
| 5351775 | Method for propelling and retarding off-road haulers An improved method and apparatus for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels are propelled and retarded by DC electric wheel motors powered from on-board generators, optiona... | 10/04/1994 |
| 5103923 | Method and apparatus for propelling and retarding off-road haulers An improved method and apparatus for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels are propelled and retarded by DC electric wheel motors powered from on-board generators, optiona... | 04/14/1992 |
