Patents for H02P 9 - Arrangements for controlling electric generators for the purpose of obtaining a desired output (15,039)
06/1989
06/13/1989US4839576 Controller for AC generator in vehicles
06/13/1989US4839575 Alternator regulator having output monitoring and limiting controls
06/07/1989EP0318475A1 Voltage regulator for a generator.
05/1989
05/30/1989CA1254942A1 Generator voltage regulating system
05/18/1989WO1989004542A1 Centrifugally activated switch for a synchronous generating system
05/10/1989EP0314882A1 Digital slip frequency generator and method for determining the desired slip frequency
04/1989
04/26/1989EP0313366A2 Variable speed constant frequency power system with boost converter auxiliary output
04/26/1989EP0313096A1 Control system of pumping operation using AC exciting generator-motor
04/25/1989US4825139 Electric power supply unit, in particular for a motor vehicle, and an electric rotary machine for such a unit
04/19/1989EP0311717A1 Improvements in synchronous generators
04/18/1989US4823018 Control system for variable speed water-wheel generator apparatus
04/12/1989CN2035939U Automatic microcomputer controller for generator load
04/11/1989CA1252509A1 Voltage regulated permanent magnet generator system
04/05/1989EP0309814A1 Electric energy generation device
04/04/1989US4819179 Digital slip frequency generator and method for determining the desired slip frequency
03/1989
03/29/1989EP0308621A2 Power system stabilizer
03/28/1989US4816756 Circuit and method for statically testing rotating rectifiers in brushless alternators
03/28/1989US4816696 Variable-speed pumped-storage power generating system
03/22/1989CN2034753U Electron voltage regulator for car's generator
03/15/1989CN2034352U Electronic voltage regulator of ac generator for vehicle
03/14/1989US4812730 Variable-speed generator/motor system
03/14/1989US4812729 Protecting apparatus for secondary excitation type variable speed AC generator/motor
03/09/1989WO1989002187A1 Engine governor eddy-current damper mechanism and method
03/08/1989EP0306319A1 Method for statically testing rotating rectifiers in brushless alternators
03/08/1989CN2033961U Micro-computer controlling hydroelectric generator
03/08/1989CN1003551B Electric power system for starting large rotatable synchronous machine
03/02/1989DE3727696A1 Method and device for asynchronous motor acceleration of an asynchronous generator
02/1989
02/28/1989US4808842 Dual voltage generator system
02/23/1989DE3726940A1 Starting device for an internal combustion engine driving an alternator
02/21/1989US4807106 Method and circuit for voltage regulation of DC power sources
02/21/1989US4806841 Constant speed and frequency generating system
02/21/1989US4806781 Water-driven machine set with the speed reference value set for optimum efficiency
02/15/1989EP0303171A2 A variable speed generator-motor apparatus
02/08/1989EP0302107A1 Power generating system
02/08/1989CN2032376U Step load equalizer for trigger tube voltage measuring
02/07/1989US4803472 Phase signal detecting device
02/01/1989CN2031980U Voltage regulator for electric generator of automobile
01/1989
01/31/1989US4801859 Boost/buck DC/DC converter
01/31/1989CA1249630A1 Pumping-up generator/motor system and method of operation of the same
01/24/1989US4800291 Electronic circuit for control of a voltage regulator of an electrical generator
01/18/1989EP0299807A2 Method and apparatus for managing alternator loads on engines
01/18/1989CN2030955U Thick-film ic regulator
01/17/1989US4798082 Control-display device for an engine-equiped apparatus
01/17/1989CA1249022A1 Voltage regulator for generator
01/11/1989CN2030775U Automatic voltage-regulator for synchronous generator
01/04/1989EP0297127A1 Double differential, electrically compensated constant speed drive
12/1988
12/28/1988EP0296529A1 Speed control device for a generator, driven by a water turbine
12/28/1988EP0296234A1 Starting system for an electrically-compensated constant speed drive
12/27/1988US4794316 Induction machine system
12/27/1988US4793309 Engine governor eddy-current damper mechanism and method
12/14/1988EP0294394A1 Peak power shaving apparatus and method.
12/14/1988CN88202349U Multi-purpose integrated regulator of generator of car
12/13/1988US4791309 Electrical control systems
12/07/1988EP0294190A2 A resin sealed semiconductor device and a method for making the same
12/07/1988EP0294146A1 Exhaust energy recovery apparatus for engine
12/07/1988CN88202348U Double-functional integrated generator adjuster for vehicle
12/07/1988CN88105250A Electronic manostat of a.c. magnetoelectric generator
12/01/1988WO1988004519A3 Starting system for an electrically-compensated constant speed drive
11/1988
11/29/1988US4788653 Digital filter for power system stabilizer
11/29/1988CA1245716A1 A.c. motor-generator
11/22/1988US4786853 Brushless capacitor excited generator
11/17/1988EP0290480A1 Power circuit for switching the number of poles on the rotor of synchronous machines by using rotative diodes
11/01/1988CA1244081A1 System to control the frequency of a generator driven by an autonomous hydraulic turbine
10/1988
10/26/1988CN87213089U Voltage regulator of silicon rectified generator in an automobile
10/11/1988US4777425 Alternator voltage regulator with speed responsive control
10/06/1988WO1988007782A1 Electric generator
10/05/1988CN88202036U Electric power system fluted coupling using frequency or speed as signal
09/1988
09/28/1988CN87214809U Transistor switch excitation-adjusting device
09/28/1988CN87214719U Portable pneumatic washing unit
09/07/1988EP0280876A1 system and method for optimizing generation of electrical power
09/06/1988US4769611 Frequency sensing circuits and methods
08/1988
08/25/1988WO1988006378A1 Power generating system
08/24/1988EP0243356A4 Regulated chopped dc power supply apparatus.
08/23/1988US4766360 Induction generator/motor system
08/16/1988US4764838 Regulated alternator with positive fault related shut down apparatus
08/10/1988CN87100292A Factor improving method to heigten moving target selecting radar
08/02/1988US4761726 Variable speed constant frequency power system with boost converter auxiliary output
07/1988
07/28/1988DE3700863A1 Electric regulation arrangement for maintaining a uniform control voltage
07/27/1988EP0275953A2 Variable-speed power generating system
07/26/1988US4760323 For an automobile engine
07/20/1988EP0275192A2 Reconfigurable integrated controls and displays for a turbomachine
07/05/1988US4755734 Voltage regulator for vehicle mounted generator
06/1988
06/30/1988WO1988004860A1 Double differential, electrically compensated constant speed drive
06/30/1988WO1988004519A2 Starting system for an electrically-compensated constant speed drive
06/28/1988US4754156 Control apparatus for variable-speed hydraulic power generating system
06/22/1988EP0271498A1 Emergency power system
06/22/1988CN87107870A Cogeneration system
06/21/1988US4752751 Electrical power supply
06/16/1988WO1988004494A1 Peak power shaving apparatus and method
06/14/1988US4751629 Output power regulating system for a portable engine powered electric generator
06/07/1988US4749944 Load detecting device for generator
06/07/1988US4749935 Alternator and controlled rectifier for producing pulse width modulated DC output pulses
06/02/1988WO1988004113A1 Procedure and apparatus for producing an a.c. voltage
06/02/1988WO1988003989A1 Cogeneration system
06/01/1988EP0268726A2 Cogeneration system
06/01/1988CN87211251U Regulator for externally grounded alternator
05/1988
05/31/1988CA1237488A1 Switching circuit utilizing a field effect transistor
05/25/1988EP0268160A1 Method and device to reduce at least one frequence portion of a periodic pulsation
05/24/1988US4746807 Automatic control system for controlling the output power of a power plant
05/11/1988EP0266556A2 A rotating electric machine for use as a motor