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| Number | Title | Issue Date |
| 7163071 | Method for operating a non-railbound land vehicle with a combustion engine-generator unit and an electric drive motor and corresponding vehicle The invention relates to a non-railbound land vehicle (2) comprising a drive system with the following components; a combustion engine-generator unit (=VG unit) (14, 16); at least one electric drive motor (18, 20); a power control station (30... | 01/16/2007 |
| 7081725 | Power electronics apparatuses for double-fed induction generator to induction motor drive system The present invention includes a power drive electronics apparatus connected between a frequency variable generator and an electric motor. The power drive electronics apparatus includes a three-phase diode rectifier having a three-phase AC input, a positive DC outpu... | 07/25/2006 |
| 7042110 | Variable speed distributed drive train wind turbine system A variable speed wind turbine employing a rotor connected to a multiplicity of synchronous generators with wound field or permanent magnet rotors. A passive rectifier and an inverter are used for power transfer back to the grid. A Turbine Control Unit (TCU) commands... | 05/09/2006 |
| 6977475 | Automotive electric power supply apparatus Each of the phases of coil in an armature winding of a dynamoelectric machine is constructed so as to have six turns, an inverter has a plurality of element-diode sets, each element-diode set including a pair of switching elements connected in series and diodes conn... | 12/20/2005 |
| 6960980 | Power converter with shunt resistor A power converter includes a shunt resistor constituted by a shunt resistance and a plurality of main electrodes made of a sheet-like resistive material. In the shunt resistor, plates lower in volume electric resistivity than the resistive material, higher in therma... | 11/01/2005 |
| 6888329 | Control method of dynamo-electric machine for vehicle A method of controlling an electric rotating machine for a vehicle includes an electric rotating machine (1) including a rotator having a field winding (5) and a stator having an armature winding (3), a field current controller (9) for co... | 05/03/2005 |
| 6731081 | Vehicle alternator having rectifier circuit using diode and FET A vehicle alternator includes a permanent magnet rotor, a stator having armature coils, and a rectifier circuit. In the rectifier circuit, schottky barrier diodes and FETs are connected in series so that the forward directions of the schottky barrier diodes and para... | 05/04/2004 |
| 6392371 | Universal frequency electrical generator A power generator in which the rotor's mechanical rotation speed and the output frequency can be varied substantially independently of each other through electronic controls, to achieve results such as better match between speed and load regime of the pri... | 05/21/2002 |
| 6133702 | Multi-function vehicle starter and alternator and method therefor A multi-function apparatus and a method for performing the functions of a starter, alternator and engine stabilization system for an engine of a motor vehicle. The apparatus comprises a rotor, a stator and a switching/detection system associated with the ... | 10/17/2000 |
| 5998944 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as is well as is large voltage spikes. The controller (26) selectively excite... | 12/07/1999 |
| 5977730 | Method and apparatus for controlling the flow of hydraulic fluid A hydraulic circuit (124) is defined in a manifold (130) which may be aluminum, steel, or any other suitable material. The circuit (124) regulates the flow of hydraulic fluid to the hydraulic motor (120) and thus ensures that the motor rotates at an essen... | 11/02/1999 |
| 5959416 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as well as large voltage spikes. The controller (26) selectively excites the ... | 09/28/1999 |
| 5767636 | Vehicle power generating apparatus To provide a vehicle power generating apparatus capable of transmitting plural kinds of control signals from an external control device to a generated voltage control unit provided in a generator for power generation control while curbing increases in the... | 06/16/1998 |
| 5473228 | Control method for electrical appliance in hybrid vehicle A control method for an electrical appliance in a hybrid vehicle. When the electric appliance is connected, the output of the engine is maintained by reducing the output of the generator by the equivalent of the power consumed by the electric appliance wh... | 12/05/1995 |
| 5137119 | Adaptive digital armature current control method for ward-leonard elevator drives using an SCR generator field converter A current regulator phase controls a power signal to control silicon controlled rectifiers arranged in a bridge. The silicon controlled rectifiers excite a generator field of an elevator drive. Discontinuity in the generator field current, caused by the i... | 08/11/1992 |
| 4982123 | Integrated exciter generator and rotating transformer The problem of providing field power to a stationary main generator rotor is addressed such that it can be used as a synchronous or brushless dc motor. To that end, a dynamoelectric machine performs the dual-functions of an exciter generator and a rotatin... | 01/01/1991 |
| 4939441 | Excitation system for a brushless generator having separate AC and DC exciter field windings An excitation system for a brushless generator includes an exciter portion having a set of polyphase exciter field windings and an additional exciter field winding disposed in a stator of the generator, a source of polyphase, constant-frequency AC power a... | 07/03/1990 |
| 4751978 | Electric assist steering system with alternator power source A power assist steering system in which electrical power to drive the electric assist motor is selectively provided from either the alternator or the battery depending upon the vehicle speed and applied steering torque. An electronic control unit controls... | 06/21/1988 |
| 4709203 | On board power supply particularly for a ship propelled by a variable speed diesel engine The invention relates to an on board power supply, particularily for a ship propelled by a variable speed diesel engine (1), comprising a first alternator (2) coupled to a diesel engine, an electronic regulator (4) for the first alternator, a rectifier (5... | 11/24/1987 |
| 4543513 | Method and an apparatus for controlling a.c. rotating machinery power plants The control of a quantity (voltage, phase) relating to a generator-motor pair in an electric power station is accomplished by generating a pulse sequence associated with the quantity to be controlled, generating a predetermined reference pulse sequence an... | 09/24/1985 |
| 4494050 | System for supression of underdamped oscillations in ac power drawn by synchronous motors driving Ward-Leonard generators A method and apparatus for reducing oscillations in input electrical power to a Ward-Leonard drive system which is subject to variations in mechanical loading, the technique utilizing a notch filter in the feedback path to the dc generator, the notch filt... | 01/15/1985 |
| 4383213 | Triodyne A dynamoelectric machine having a multiple of three poles and a corresponding multiple of three brushes is disclosed. Each of the poles are wound poles, two of each group of three poles being excited with a constant excitation during normal operation, the... | 05/10/1983 |
| 4323830 | DC Motor control using motor-generator set with controlled generator field A d.c. generator is connected in series opposed to the polarity of a d.c. power source supplying a d.c. drive motor. The generator is part of a motor-generator set, the motor of which is supplied from the power source connected to the motor. A generator f... | 04/06/1982 |
| 4292531 | Electrical propulsion process and system for a traction vehicle with an on-board source of power A self-propelled traction vehicle equipped with an a-c traction motor energized by the a-c output of a controlled current inverter is propelled by a process comprising the steps of providing a traction alternator on-board the vehicle, rotating the rotor o... | 09/29/1981 |
| 4232255 | Delivery control system for vehicle-mounted spreader A control system for regulating the speed of a truck-mounted material conveyor includes a direct current drive motor and a truck-driven shunt generator for providing power to the motor. A control circuit has a reference input representing desired delivery... | 11/04/1980 |
| 4179729 | Rotary electric machine and power conversion system using same A power conversion system for converting between electrical power at different frequencies, including a rotary electrical machine including a rotor, a stator, first and second independently controllable field windings, and at least one armature winding fo... | 12/18/1979 |
| 4164785 | Multiphase to single phase and frequency converter system A multiphase to single phase electrical energy converter wherein the frequency is converted from a relatively high frequency, in order of 1,000 hertz, to a relatively low frequency, as for example, normal household frequency of 60 hertz. A three-phase alt... | 08/14/1979 |
| 3967171 | Propulsion control system for electrically powered vehicles Propulsion control system for electrically powered vehicles, typically heavy duty off-road type work vehicles having electric motor driven wheels. In embodiment shown, power is supplied from direct current generator driven by internal combustion engine. M... | 06/29/1976 |
| 3953775 | Propulsion control system for electrically powered vehicles Propulsion control system for electrically powered vehicles, typically heavy duty off-road type work vehicles having electric motor driven wheels. In embodiment shown, power is supplied from direct current generator driven by internal combustion engine. M... | 04/27/1976 |
