Matches 1 - 47 out of 47


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8138695 Series electric engine power drive with rheostat and battery feedback  
The motor generator set described here has unique circuitry which allows for the combined electrical output of two generators to be paired up with one another as well as the output of a battery in...
8097968 Position-controlled start from the AC line using a synchronous machine  
A synchronous electric machine operates as a starter-generator for an aircraft. When operating in a starting mode, a main stator of the machine is supplied with electrical power at a constant...
8008876 Hybrid electric vehicle  
A hybrid electric vehicle includes, in one example, a motor-generator driven by an engine to generate alternating current, wherein the motor-generator is further configured to start the engine, a...
7990085 Generator control unit  
An object of the present invention is to provide a generator control unit having improved voltage response in a system which is not provided with a battery in a DC output unit. In order to control...
7808194 Control apparatus for electric vehicles  
In a hybrid vehicle control apparatus, a motor control unit executes the input power control on a MG unit independently from a torque control on an AC motor so that the input power control and the...
7755307 Control apparatus for electric vehicles  
Right after a system operation start but before a smoothing capacitor has been sufficiently pre-charged, conversion voltage control is executed to control a voltage boosting converter so that a...
7531974 Apparatus and method for controlling a motor  
A motor control device is disclosed that reduces the shock caused by torque increase during switching output of a motor's power generator from PWM wave voltage driving to square-wave voltage...
7378808 Electric drive system having DC bus voltage control  
An electric drive system has a power source and a generator operatively connected to the power source. The generator is configured to produce a power output. The electric drive system also has at...
7157869 Control system and control method for motor powered four wheel drive vehicle  
A control system for controlling a vehicle which has an engine for driving front wheels thereof and a motor for driving rear wheels thereof. The control system includes: a motor generator which is...
7134261 Hybrid type working machine  
In the working machine wherein the output of an engine generator is directly supplied to a motor for travel without using the intermediary of a battery, preventing the engine from slowing down. The...
7119513 Control system and controlling method for motor drive four wheel drive vehicle  
A control system for controlling a vehicle which has an engine for driving at least one of wheels thereof and a motor for driving at least one of the rest of the wheels thereof. The control system...
7116067 Power converter controlling apparatus and method providing ride through capability during power interruption in a motor drive system  
A method of controlling a power converter (20) of a motor drive system (10)controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power...
RE39205 Power output apparatus and method of controlling the same  
While a ring gear shaft 126 linked with a drive shaft rotates, a power output apparatus 110 applies a torque to a first motor MG1 attached to a sun gear shaft 125, thereby abruptly increasing a...
7053566 Drive train for hybrid electric vehicle  
A drive train for a hybrid electric vehicle has an engine, first and second motor/generators, a third motor, and a transmission in connecting relationships with the engine, the motor/generators,...
6897574 Gate driver ASIC for an automotive starter/alternator  
A starter/alternator system for an engine and a battery of an automobile are provided. The system includes a starter/alternator machine; a three phase MOSgate control inverter/bridge electrically...
6774591 Motor/generator  
A motor/generator comprises a stator (2) having plural coils (C1-C14), and plural rotors (3, 4) disposed coaxially with the above-mentioned stator and driven by a compound current. The phase...
6646394 Control device for plurality of rotating electrical machines  
A control device for a rotating electrical machine system having a plurality of rotating electrical machines is provided with a single current control circuit and a controller. The controller sets...
6611127 Drive circuit for motor/generator  
A drive circuit for a motor/generator, having a first rotating electrical machine which is mainly used as a motor and a second rotating electrical machine which is mainly used as a generator, is...
6590360 Control device for permanent magnet motor serving as both engine starter and generator in motor vehicle  
A control device for a permanent magnet motor serving as both a starter for an engine and a generator in a motor vehicle is disclosed. The control device includes a drive circuit converting a...
6486632 Control device for motor/generators  
A controller for motor/generators is proposed which allows reductions in ripple current generated by an inverter driving a power-generating motor/generator and a vehicle-driving motor/generator....
6452352 Method of current interaction in an electric motor drive system having a load-dependent current generating system  
This invention provides a process for determining a desired torque (load) value for a load-dependent current generating system, such as a fuel cell system, in an electric vehicle. The process...
6369539 Motor drive controller for vehicle  
The present invention provides a motor drive controller for a vehicle having an engine and a motor disposed therein as a vehicle-propulsion system, the motor having both driving and...
6087791 Control apparatus for internal combustion type electric locomotive  
To obtain a control apparatus for a Diesel-electric locomotive that harmonizes an engine power with a torque command of an induction motor, which is a load of an engine, in the Diesel-electric...
6051951 Generator motor for internal combustion engine  
An alternator for an engine normally operated as a generator is caused to operate as a synchronous motor according to the operating condition of the engine. If power generation by the alternator 1...
6034492 Motor-generator  
A D.C. motor-generator and an electric double layer capacitor are fixedly connected directly to each other and a rotary shaft of the motor-generator is rotated in one direction by an external force...
5920161 Driving system for permanent magnet type synchronous machine suitable for electric vehicle and driving control method using the same  
In a driving system comprising a permanent magnet type synchronous machine, an electric power converter for the synchronous machine and a driving controller for driving the electric power...
5847520 Method and apparatus for adjusting the electric power distribution in a motor vehicle, in patricular a hybrid-powered vehicle  
The invention concerns a method for adjusting the electric power distribution in a direct voltage supply circuit (2) in a motor vehicle, e.g. a hybrid-powered vehicle comprising an electric...
5789881 Power source control apparatus for hybrid vehicles  
A power source control apparatus for parallel and series hybrid vehicles is provided. The power source control apparatus determines a required torque of a power source consisting of a...
5767637 Controller for turboal ternator  
A speed controller for a generator having a rotor includes a speed control input port for receiving a speed command signal, a proportional gain stage electrically connected to said speed control...
5684370 Control unit and method which vary the output voltage of an AC generator based on a detected duty ratio  
To improve charging efficiency of a storage battery and extend the service life of each of vehicle laps, the output voltage of a generator is adjusted to a first voltage value (13.5 V, for example)...
5652485 Fuzzy logic integrated electrical control to improve variable speed wind turbine efficiency and performance  
A control system utilizing fuzzy logic adaptive control to control the operation of a wind turbine driven electric power generator to control power generator speed and hence power frequency while...
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...
5522434 Apparatus for controlling a drive motor in a weaving machine  
An apparatus and method for actuating a drive member in a weaving machine comprises a drive unit, connected to a power supply network, for controllably rotating the drive member. The drive unit...
4720662 Motor having alternator coils  
A motor has a stator having sequential groups of three coils designated 36, 37 and 38. On at least one side of the stator is a rotor having permanent magnets, alternating N and S. The source of...
4442385 Variable frequency drive for a motor-generator/alternator set  
A variable frequency drive for a motor-generator/alternator set which is used to supply electrical power to computer or data processing equipment. Power failures in commercially supplied power...
4348620 Magnetic field presetting circuit for an exciter field winding in an electrical propulsion system for traction vehicles  
A traction vehicle propulsion system comprises a d-c motor and an excitation generator for separately exciting the motor field. Current in the field winding of the excitation generator is normally...
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...
4061949 Earth excavator including apparatus for stabilizing performance by compensating for changes in temperature  
An earth excavator including apparatus for stabilizing performance by compensating for changes in temperature. The apparatus includes a temperature compensating voltage regulator for regulating and...
3735221 ELECTRICAL HOIST CONTROL SYSTEM  
An electrical control system for raising and lowering a drum-and-cable supported load. A reversible shunt wound drive motor which is connected to the drum is operable under the control of a...
3689812 GENERATOR-FED MOTOR CONTROL WITH DYNAMIC BRAKING FOR VEHICLE PROPULSION  
In a variable voltage drive of the Ward Leonard type the excitation of the generator is discontinued for braking and the armature of the generator and the armature of the drive motor are connected...
3568018 ELECTRIC DRIVE AND BRAKE ARRANGEMENT AND METHOD  
An electric drive and dynamic braking arrangement intended in a preferred embodiment for driving and braking a vehicle, such as a heavy off-road truck, and having a pair of traction motors arranged...
3551685 VEHICLE ELECTRIC DRIVE SYSTEM  
3265938 Actuator circuit for electromagnetic devices  
3225278 Generator-fed hoist motor control with load float control  
3109972 Plural generator fed motor control system  
2968754 Adjustable voltage control system  
2924762 Generator-motor power selection system  
Matches 1 - 47 out of 47