Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control
Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487)
03/1983
03/15/1983US4376894 Device for driving a rotary-anode X-ray tube
03/09/1983EP0073504A1 Control systems for AC induction motors
03/09/1983EP0073503A1 Control system for synchronous brushless motors
03/03/1983WO1983000761A1 Frequency/speed controller
03/02/1983EP0072788A1 Method and apparatus for controlling an ac induction motor
03/01/1983US4375612 Controlled regenerative d-c power supply
02/1983
02/01/1983US4371906 Overspeed protective apparatus for a portable tool
02/01/1983US4371824 Base drive and overlap protection circuit
02/01/1983US4371819 Pulse width modulation speed control
01/1983
01/26/1983EP0070633A2 Electrical switching circuit for a multi-phase load
01/25/1983US4370619 Phase comparison circuit arrangement
01/25/1983US4370605 Two-speed motor control
01/18/1983US4369403 Power factor controller for induction motor
01/12/1983EP0069469A1 Apparatus for speed detection
01/12/1983EP0069171A1 Control device by polarity change at the connections of an inverter feeding an asynchronous machine
01/11/1983CA1139361A1 Control system for polyphase loads
12/1982
12/28/1982US4366427 Protective method and apparatus for a controlled current inverter and motor control system
12/28/1982US4366421 Index apparatus for a rotary table
12/28/1982US4366399 Frequency discrimination circuit
12/28/1982CA1138546A1 Ptc resistor with symmetrical-joined connections
12/22/1982EP0067717A1 Induction motor control system
12/22/1982EP0067716A1 Induction motor control system
12/14/1982US4364001 Circuit arrangement for energy economy
12/14/1982US4363999 Electric propulsion and braking system for automotive vehicles
12/01/1982EP0065927A1 Method and apparatus for the exact control of a direct-current motor speed, especially that of a direct-current motor for a matrix printer
11/1982
11/30/1982US4361787 System for controlling rotation of motor
11/24/1982EP0065245A1 Variable speed induction motor drive
11/23/1982US4360767 Motor speed control apparatus
11/11/1982WO1982003953A1 Method of controlling an electric motor and control unit therefor
11/09/1982US4358736 Phase comparison circuit
11/09/1982US4358734 Methods and apparatuses for detecting the speed of an asynchronous motor
11/09/1982CA1135381A1 Digital servo circuit
11/02/1982US4357567 Reversible motor
10/1982
10/19/1982US4355274 Load responsive control system for constant speed induction motor
10/19/1982US4355268 Motor control apparatus
10/19/1982CA1134080A1 Secondary thyristor control for ac wound rotor motors
10/12/1982US4354146 Drive apparatus
10/06/1982EP0061824A1 A digital speed control device for a motor
10/05/1982US4353023 Operation control apparatus for AC motors
10/05/1982US4353022 Torque reversing motor control structure and method
09/1982
09/21/1982CA1132186A1 Slip frequency control for variable speed induction motors
09/15/1982EP0059924A1 Control apparatus for electric cars propelled by induction motor
09/07/1982US4348627 Induction motor controller with rapid torque response
09/07/1982US4348625 Variable speed motor system
09/07/1982US4348585 Frequency/speed controller
09/07/1982CA1131301A1 Speed control circuit for phase-locked loop motor drive systems
08/1982
08/24/1982US4346434 Apparatus for controlling an electric motor
08/24/1982CA1130421A1 Automatic residual phase error compensation circuit for a digital servo control system
08/24/1982CA1130420A1 Digital servo control circuit
08/17/1982CA1129977A1 Control of harvesters
08/11/1982EP0057485A2 Driving device for a rotary anode X-ray tube
08/10/1982US4344026 Static Scherbius system
08/10/1982US4344025 Motor control system
07/1982
07/28/1982EP0056437A2 Method and device for the determination of the load of apparatuses driven by electric motors
07/20/1982US4340848 Apparatus for controlling the pulse period of pulses applied to a pulse motor
07/19/1982EP0048261A4 Microcomputer controlled power tool.
07/14/1982EP0055856A2 Power factor control systems for polyphase induction motors
07/13/1982US4339703 Two step phase reset gyro motor power supply
07/13/1982EP0047251A4 Simplified power factor controller for induction motor.
07/06/1982US4338558 Induction motor control system and method
07/06/1982US4338557 Variable speed electric machine having controlled magnetic flux density
07/06/1982CA1127295A1 Servo control apparatus
07/06/1982CA1127268A1 Engine control system with apparatus for producing pulse width modulated signals
07/06/1982CA1127234A1 Motor speed control circuit
06/1982
06/30/1982EP0055146A1 Frequency-dependent numerical control circuit
06/29/1982US4337509 Method and apparatus for controlling firing phases of thyristors
06/29/1982US4337429 A.C. Motor control circuit
06/23/1982EP0054460A1 Speed control means of an electrical motor of a washing machine
06/23/1982EP0054255A2 Similified connections to control speed relating to electrical rotating machinery
06/15/1982US4335336 Device for controlling speed
06/01/1982US4333118 Load indicators for alternating-current motors
06/01/1982US4333046 Power factor control of a three-phase induction motor
06/01/1982US4332528 Compression type refrigeration device
06/01/1982CA1124784A1 Load actuating servomechanism with resonance equalization
05/1982
05/25/1982US4331220 Elevator system
05/25/1982CA1124321A1 Motor speed adjusting apparatus
05/19/1982EP0051903A1 Three phase power factor controller
05/19/1982EP0051780A1 An electric power saver for starting and controlling three phase three wire a.c. induction motors
05/13/1982WO1982001628A1 Method and apparatus for controlling an ac induction motor
05/12/1982EP0051478A2 Induction motor control system
05/04/1982US4328454 Apparatus for controlling ac motor
04/1982
04/29/1982WO1982001354A1 Electronic control of agricultural vehicles
04/27/1982US4327313 Control apparatus for electric car
04/20/1982US4326157 Double inverter slip-recovery AC motor drive with asymmetrical gating per half-bridge
04/20/1982US4326156 Asymmetrically controlled static slip-recovery motor drive system
04/20/1982CA1122270A1 Motor control arrangement
04/15/1982WO1982001283A1 Variable-speed electrical machines
04/13/1982CA1121887A1 Error cancelling sync-off-tach tape drive system
04/07/1982EP0049129A1 Apparatus and methods for controlling induction motors
04/07/1982EP0049106A1 Variable-speed electrical machines
04/06/1982US4323835 Simplified power factor controller for induction motor
04/06/1982US4323832 System for controlling the speed of a magnetic tape transport motor
04/01/1982WO1982001092A1 Method and circuit for adjusting the rotation speed or the frequency of an electric motor
03/1982
03/31/1982EP0048261A1 Microcomputer controlled power tool
03/17/1982EP0047251A1 Simplified power factor controller for induction motor
03/09/1982US4319177 Operation control apparatus for AC motors
02/1982
02/23/1982US4317176 Microcomputer controlled power tool
02/23/1982US4317074 Inverter-motor system with different control characteristics for inverter voltage and frequency
02/16/1982US4316143 Speed deviation detector for servo controlled disc mastering turntable
02/16/1982US4316132 PWM Inverter control and the application thereof within electric vehicles
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