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 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage
Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284)
05/1986
05/27/1986CA1205222A1 Safety apparatus for elevator
05/27/1986CA1205165A1 Electrically driven hammer machine
05/27/1986CA1205129A1 Variable speed induction motor drive system
05/22/1986WO1986003076A1 Apparatus for controlling a synchronous motor
05/22/1986WO1986003075A1 Microprocessor speed controller
05/06/1986US4587605 Inverter-drive controlling apparatus
05/06/1986US4587474 Control for bumpless transfer of an AC motor between a solid-state inverter and a supply mains
05/06/1986CA1204150A1 Control apparatus for ac motors
04/1986
04/30/1986EP0179356A2 Method and device for controlling of a rotating field machine
04/29/1986US4585984 Alternating current motor
04/23/1986EP0178629A2 Positioning indexing control device for inverter apparatus
04/22/1986US4584507 Motor speed control arrangement
04/22/1986CA1203567A1 Voltage-controlled, inverter-motor system
04/22/1986CA1203566A1 Control and stabilizing system for damperless synchronous motor
04/22/1986CA1203565A1 Method and apparatus for controlling the power factor of an induction-motor
04/16/1986EP0177754A2 Frequency converter apparatus
04/16/1986EP0177525A1 Arrangement for the control or regulation of the rotation speed and/or the torque of an induction motor
04/09/1986EP0176810A2 Process and device for removing the filter cake from a pressure disc filter
04/08/1986US4581568 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller
04/01/1986US4580205 Current-type GTO inverter using GTO in its surge voltage clamping circuit
04/01/1986CA1202674A1 Power factor correction for variable speed drive
03/1986
03/26/1986EP0175294A2 Method and apparatus for controlling induction motor
03/25/1986US4578746 Interlaced pulse-width modulated unrestricted frequency changer system
03/25/1986CA1202364A1 Digital generation of 3 phase pwm waveforms for variable speed control of induction motor
03/19/1986EP0174741A1 Control system for permanent magnet synchronous motor
03/18/1986US4576253 Velocity control apparatus for an elevator
03/12/1986EP0036424B1 Circuit arrangement for an asynchronous motor drive with variable speed
03/11/1986US4575668 Controller for providing PWM drive to an A.C. motor
03/11/1986US4575667 AC Motor speed control apparatus
02/1986
02/27/1986WO1986001352A1 Pwm control system for ac generators
02/25/1986US4573132 Thermal model for electrical apparatus
02/25/1986US4573003 AC Machine optimized for converter operation
02/25/1986US4573002 Servomotor control system
02/19/1986EP0171880A2 Energy economizer controlled-current start and protection for induction motors
02/19/1986EP0171415A1 Current sense demodulator.
02/12/1986EP0171094A1 A method of driving the impeller of a liquid pump
02/05/1986EP0170368A1 Speed control apparatus for a synchronous motor
01/1986
01/30/1986WO1986000766A1 Method of and apparatus for controlling a synchronous motor
01/28/1986US4567420 Semi-conductor motor control system
01/28/1986US4567419 Control apparatus for elevator
01/22/1986EP0169108A1 Speed control means for an electrical induction motor
01/22/1986EP0168502A1 Reel tension controlling method and apparatus
01/21/1986US4565953 Twelve pulse AC motor drive
01/21/1986CA1199677A1 Waveform synthesizer and motor controller
01/21/1986CA1199674A1 Method and apparatus for connecting a static inverter to a rotating motor
01/16/1986WO1986000490A1 Control board for ac motors
01/07/1986US4563619 Electric power converter circuit
01/02/1986EP0166052A1 Method and system for reconnecting inverter to rotating motors
12/1985
12/31/1985US4562396 Phase-locked loop control of an induction motor drive
12/31/1985US4562386 Current sense demodulator
12/31/1985CA1198769A1 Apparatus and methods for controlling induction motors
12/18/1985EP0165020A2 Power converter for AC load
12/17/1985US4559485 Control systems for AC induction motors
12/17/1985CA1198156A1 Procedure and arrangement for regulating an asynchronous motor powered by fast electrical controllers
12/03/1985CA1197635A1 Elevator control system
12/03/1985CA1197634A1 Control apparatus for a.c. elevator
11/1985
11/26/1985US4555755 AC Current control system
11/26/1985US4554980 Nut runner using induction motor
11/26/1985CA1197330A1 Control device for an a.c. elevator
11/21/1985EP0161738A1 Semi-conductor motor control system
11/21/1985EP0161616A2 Method and device for stabilizing the local curve of a vector formed by integration
11/12/1985CA1196681A1 Phase detector for three-phase power factor controller
11/07/1985WO1985004993A1 Method of controlling pulse width modulation for a permanent magnet synchronous motor and an apparatus therefor
11/05/1985CA1196373A1 High torque servo positioner using 3 phase variable frequency constant torque controller
10/1985
10/29/1985US4550282 Method and device for controlling a brushless alternating current motor
10/29/1985US4550281 Synchronous motor control
10/29/1985US4550280 Motor/generator operating on the reluctance principle
10/29/1985CA1196074A1 Compressor drive system
10/23/1985EP0159000A2 Method and apparatus for controlling PWM inverters
10/15/1985US4547719 Synchronous motor drive apparatus
10/10/1985WO1985004535A1 Arrangement for the control or regulation of the rotation speed and/or the torque of an induction motor
10/08/1985US4546301 Circuit and method for controlling an alternating or three-phase current motor
10/08/1985US4545464 Apparatus for controlling an A-C power elevator
10/02/1985EP0156283A1 Method and device for controlling a brushless alternating current motor
10/02/1985EP0156282A1 Method and device for controlling a brushless alternating current motor
10/01/1985CA1194545A1 Twelve pulse load commutated inverter drive system
09/1985
09/24/1985US4543520 Induction motor slip control
09/11/1985EP0154312A2 Load drive apparatus
09/10/1985CA1193318A1 Terminal voltage limit regulator for a load commutated inverter
09/10/1985CA1193317A1 Thermal model for electrical apparatus
09/04/1985EP0153751A2 Power converter for AC load
08/1985
08/27/1985US4538220 Adjustable frequency AC motor drive using an unrestricted frequency changer system
08/27/1985CA1192684A1 Ac elevator control apparatus
08/27/1985CA1192607A1 Electric power converter circuit
08/20/1985CA1192256A1 Control systems for ac induction motors
08/13/1985US4535280 Stabilizing circuit for an inverse rectifier motor control
08/07/1985EP0150472A2 Control system for improving induction motor transient response by excitation angle control
08/06/1985US4533857 Electrical energy saving device for motors
08/01/1985WO1985003391A1 Current sense demodulator
07/1985
07/30/1985US4532465 Electrotechnical device for regulating asynchronous rotating machines
07/30/1985US4532464 Control apparatus for induction motor
07/18/1985WO1985003061A1 Reel tension controlling method and apparatus
07/10/1985EP0147439A1 Variable slip drive system for induction motor
07/02/1985CA1189991A1 Drive control for a transportation system, especially an elevator
06/1985
06/25/1985US4525660 Control apparatus for inverter
06/19/1985EP0144454A2 Method and apparatus for switching three-phase loads with an ohmic-inductive character, in particular asynchronous machines and transformers to the mains
06/18/1985US4524310 Method and apparatus of controlling induction motors
06/12/1985EP0144161A2 Control system for an ac motor
06/11/1985CA1188727A1 Motor variable frequency drive
05/1985
05/29/1985EP0142808A2 Method and apparatus for operating an asychronous motor fed by a current-source inverter during power failure
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