Patents
Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487)
02/1984
02/28/1984US4434393 Induction motor control system
02/28/1984US4434390 Motor control apparatus with parallel input, serial output signal conditioning means
02/21/1984US4433276 Three phase power factor controller
02/21/1984CA1162603A1 Pneumatic device to control the speed of an electric motor
02/15/1984EP0100435A2 Electric regulation of motors
02/14/1984US4431956 For an AC motor
02/08/1984EP0099992A2 Machine tool with control device
02/07/1984US4430607 Circuit arrangement
02/01/1984EP0099803A1 Electrical appliance for controlling rotating asynchronous machines
01/1984
01/24/1984US4427934 Current limiter for a load commutated inverter
01/24/1984US4427933 Load commutated inverter gating control system and motor drive with such control system
01/24/1984US4427930 Electric vehicle current regulator
01/17/1984US4426614 Pulsed thyristor trigger control circuit
01/17/1984US4426611 For controlling power supplied to an AC load from an AC source
01/17/1984US4426610 Induction motor control system
01/17/1984US4426609 Power factor controller
01/10/1984CA1160280A1 Inverter-motor system with different control characteristics for inverter voltage and frequency
12/1983
12/27/1983US4423364 Electric motor damper drive with backup power pack
12/21/1983EP0096295A2 Erroneous pulse sequence detector
12/21/1983EP0096073A1 Improved motor speed control system.
12/20/1983US4422029 Instant reverse control circuit for a single phase motor
12/13/1983US4420719 Cross-tied current regulator for load commutated inverter drives
12/13/1983US4420715 Apparatus for controlling motor speed
12/13/1983CA1158768A1 System for controlling the speed of a magnetic tape transport motor
12/08/1983WO1983004349A1 Apparatus for processing regenerative energy of ac motor
12/06/1983US4419615 Method of controlling pulse width modulated inverter for use in induction motor drive
11/1983
11/29/1983US4418309 Two phase induction motor circuit with series connected center-tapped stator windings
11/29/1983US4418308 Scalar decoupled control for an induction machine
11/29/1983US4418304 Circuit for controlling rotation of motor
11/23/1983EP0094763A2 Pulse motor control device
11/23/1983EP0094492A2 Multi-mode drive motor speed control for use in particular with information storage disks
11/22/1983CA1157549A1 Circuit arrangement for energy economy
11/10/1983WO1983003930A1 Power factor sensing motor controller
11/10/1983WO1983003929A1 Induction motor driving device
11/08/1983US4414499 Motor protecting improved energy economizer for induction motors
11/02/1983EP0092937A1 Three phase variable frequency constant torque controllers for high torque servo positioners
11/01/1983US4413217 Power factor controller
11/01/1983US4413211 Control circuit for electrical appliances
10/1983
10/26/1983EP0092370A1 A.C. motor controller
10/26/1983EP0091927A1 An arrangement for driving pumps and like loads
10/25/1983US4412167 Polyphase power factor controller
10/25/1983US4412163 Positioning drive
10/25/1983US4412158 Speed control circuit for an electric power tool
10/25/1983CA1155950A1 Digital control system for electric motors in power tools and the like
10/18/1983US4410845 Backspin detection circuit for a submersible pump
10/18/1983CA1155530A1 Digital speed control system for sewing machines
10/12/1983EP0091197A1 Condition responsive control system
10/12/1983EP0091192A1 Servo control apparatus and method of controlling the rotational velocity and phase of a rotating mechanism
10/12/1983EP0091191A1 Phase detector control for a servo system
10/12/1983EP0091188A1 Microprocessor controlled multiple servo system for a recording and/or reproducing apparatus
10/11/1983US4409534 Microcomputer-based pulse width modulated inverter fed machine drive system
10/11/1983US4409532 Start control arrangement for split phase induction motor
10/11/1983CA1155198A1 Digital motor control system
10/04/1983US4408149 Self-optimizing voltage control of an induction motor
10/04/1983CA1154844A1 Motor speed control
09/1983
09/29/1983WO1983003325A1 Speed control circuit for motor
09/21/1983EP0089208A2 A.C. motor drive apparatus
09/20/1983CA1154126A1 Motor speed control
09/14/1983EP0088626A2 Apparatus for controlling the speed of a rotating body
09/13/1983US4404512 Motor drive circuit
09/13/1983US4404511 Motor power factor controller with a reduced voltage starter
09/13/1983US4404509 Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machine
09/07/1983EP0087429A1 Marine drive system
08/1983
08/24/1983EP0086650A2 Apparatus for providing a controlled power waveform
08/23/1983US4400655 Self generative variable speed induction motor drive
08/23/1983US4400654 Digital speed control for a brushless DC motor
08/23/1983US4399892 Thyristor Leonard type elevator control system
08/23/1983CA1152581A1 Phase comparison circuit
08/23/1983CA1152580A1 Phase comparison circuit arrangement
08/17/1983EP0086114A1 Electrical tool having speed control circuit
08/10/1983EP0085394A1 Control system for electric cars driven by induction motors
08/10/1983EP0085338A1 Device for determining the common frequency of two independently variable alternating values, in particular in a rotating field machine
07/1983
07/12/1983US4393340 Motor speed control device
07/07/1983WO1983002341A1 Improved motor speed control system
07/05/1983US4392100 Optimum efficiency control system
06/1983
06/21/1983US4389607 Synchronous motor control device
06/14/1983US4388578 Power factor controller
06/08/1983EP0080788A1 Pulsed thyristor trigger control circuit
06/07/1983US4387421 Optimal and adaptive control of variable speed AC motor drives
06/07/1983US4387329 Three phase power-factor control system for A.C. induction motors
06/07/1983US4387326 Variable reluctance motor systems
06/01/1983EP0080268A1 Tumbler dryers
05/1983
05/31/1983US4386302 Control device for a multispeed motor
05/31/1983US4386301 Digital speed control system for sewing machines
05/24/1983US4385268 Two-quadrant operation system for a slip-recovery drive
05/24/1983US4385267 Controlled rotor rectifier arrangement for a slip-recovery drive
05/24/1983CA1147017A1 Reluctance motors 4-phase converter
05/18/1983EP0079169A1 A power controller
05/11/1983EP0078698A1 AC motor control method and arrangement
05/10/1983US4383208 Dynamic determination of friction in a closed loop control system
05/04/1983EP0077836A1 Control apparatus for electric motors
04/1983
04/28/1983WO1983001542A1 An arrangement for driving pumps and like loads
04/27/1983EP0077455A1 Print head control system with controlled acceleration and deceleration
04/27/1983EP0077446A1 Print head velocity control system using analog and digital feedback
04/26/1983CA1145123A1 Pipe repair methods and apparatus using an electromagnetically exploded filament
04/20/1983EP0077118A1 Motor power factor controller with a reduced voltage starter
04/05/1983US4379258 Power control circuit for induction motor
03/1983
03/29/1983US4378517 Method and apparatus for controlling the energization of an electric motor
03/22/1983US4377778 Sewing machine speed control system having quick response characteristic
03/17/1983WO1983000851A1 Marine drive system
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