| Patents for H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details (7,591) |
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| 11/06/1985 | EP0160523A2 Conveyor system |
| 11/06/1985 | EP0160310A2 Load-commutated inverter for operating synchronous motor |
| 11/05/1985 | US4551708 Position sensing device |
| 11/05/1985 | CA1196374A1 Synchronous electric motor control systems |
| 10/29/1985 | US4550281 Synchronous motor control |
| 10/29/1985 | US4550280 Motor/generator operating on the reluctance principle |
| 10/24/1985 | WO1985004772A1 Controller for an induction motor |
| 10/23/1985 | EP0159000A2 Method and apparatus for controlling PWM inverters |
| 10/15/1985 | US4547719 Synchronous motor drive apparatus |
| 10/15/1985 | CA1195395A1 Power supply system for a linear motor |
| 10/09/1985 | EP0157582A2 Apparatus for controlling the running of carriage |
| 10/08/1985 | CA1194924A1 Motor speed control circuit |
| 10/08/1985 | CA1194921A1 System for linear motor control |
| 10/01/1985 | CA1194545A1 Twelve pulse load commutated inverter drive system |
| 09/10/1985 | US4540925 Control system for electric motor |
| 09/10/1985 | CA1193318A1 Terminal voltage limit regulator for a load commutated inverter |
| 09/10/1985 | CA1193317A1 Thermal model for electrical apparatus |
| 08/28/1985 | EP0152719A1 Electric synchronous machine excited through rotated rectifiers |
| 08/20/1985 | US4536692 Circuit for energizing and controlling a synchronous rotary machine operating at variable speed |
| 07/17/1985 | EP0148269A1 Servo driving unit |
| 07/03/1985 | EP0146849A2 Actuator with stepping motion function |
| 07/03/1985 | EP0146818A2 Magnetic amplifier and speed control circuit for motors and its use |
| 07/03/1985 | EP0146633A1 Numerical control system |
| 07/02/1985 | US4527109 Control apparatus for thyristor motor |
| 07/02/1985 | US4526461 Copying machine control system |
| 06/26/1985 | EP0146475A1 Protective device for an electrical motor |
| 06/26/1985 | EP0145913A2 Reactance commutated high resolution servo motor system |
| 06/25/1985 | CA1189568A1 Power conversion circuit |
| 06/18/1985 | US4524403 Washing machine motor speed control circuit |
| 06/18/1985 | US4524398 Velocity control device for magnetic disc apparatus and method therefor |
| 06/12/1985 | EP0144161A2 Control system for an ac motor |
| 06/12/1985 | EP0143943A2 Speed-control device for alternating-current and three-phase motors |
| 06/05/1985 | EP0143634A2 Processfor the preparation of butane-1.4-diol |
| 05/29/1985 | EP0142563A1 System of controlling synchronous motor |
| 05/28/1985 | US4520300 Brushless ultra-efficient regenerative servomechanism |
| 05/21/1985 | US4518908 Control circuit of a synchronous motor with two induction windings |
| 05/14/1985 | US4517620 Electrical feed and control circuit for the pump piston of a spray gun |
| 05/14/1985 | US4517502 Load monitoring circuit for electric motors |
| 05/08/1985 | EP0140424A1 Motor speed control arrangement |
| 05/08/1985 | EP0139869A1 Controlling system for a pole change electric motor |
| 05/02/1985 | EP0139006A1 System for controlling synchronous motor |
| 04/30/1985 | CA1186369A1 Simplified connections to control speed relating to electrical rotating machinery |
| 04/23/1985 | US4513381 Speed regulator for power tool |
| 04/17/1985 | EP0137156A1 Airflow control system |
| 04/16/1985 | US4511835 Voltage-controlled, inverter-motor system |
| 04/16/1985 | US4511834 Control and stabilizing system for damperless synchronous motor |
| 04/10/1985 | EP0136357A1 Electric vacuum cleaner |
| 04/03/1985 | EP0135613A1 Method and device for the regulation of an electric motor, by which the number of revolutions under no-load running operation is automatically reduced |
| 04/02/1985 | US4508487 Automatic load seeking control for a pumpjack motor |
| 03/27/1985 | EP0135015A2 Device for controlling and handling an electric apparatus |
| 03/26/1985 | US4507598 Two-axis positioning system |
| 03/12/1985 | US4504769 Electrically-powered tool |
| 03/05/1985 | US4503370 Electronic clutch for electric tools of selectable speed |
| 02/27/1985 | EP0133580A1 Permanent magnet synchronous motor control system |
| 02/26/1985 | CA1183202A1 Feedback motor control circuit |
| 02/19/1985 | US4500826 Variable speed electric induction motors without brushes |
| 02/19/1985 | US4500824 Method of commutation and converter circuit for switched reluctance motors |
| 02/19/1985 | US4499986 Control apparatus for passenger conveyor |
| 02/12/1985 | US4498551 Battery-driven vehicle and recharging system |
| 01/30/1985 | EP0132361A2 Motor speed control circuit |
| 01/29/1985 | US4496893 Controlling device for a brushless motor |
| 01/29/1985 | US4496886 Three state driver for inductive loads |
| 01/23/1985 | EP0131815A1 AC motor drive |
| 01/22/1985 | CA1181479A1 Brushless excitation system with a holding current resistor |
| 01/15/1985 | US4494159 Magnetic head-positioning device for magnetic disc drive |
| 01/15/1985 | US4494054 Electric power delivery system and method |
| 01/01/1985 | US4491775 Motor operating parameter sensing apparatus |
| 12/25/1984 | US4490656 Overload protection in a motor control system |
| 12/20/1984 | WO1984004978A1 Numerical control system |
| 12/19/1984 | EP0128671A2 Improvements in or relating to electric motors |
| 12/19/1984 | EP0128182A1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller. |
| 12/18/1984 | US4489266 Circuit and a method for processing amplitude and phase variable multiphase signals, which are required as current or voltage reference to drive synchronous motors |
| 12/18/1984 | US4489265 Electric machine with continuous pole phase modulation |
| 12/18/1984 | US4489264 Power Control for AC motor |
| 12/18/1984 | US4489263 Electronic speed control circuits |
| 12/18/1984 | US4489262 Device for controlling a reluctance motor |
| 12/11/1984 | US4488101 Starting system for chopper controlled motor-commutated thyristor inverter |
| 12/05/1984 | EP0126779A1 Ac motor control system |
| 12/05/1984 | EP0126778A1 Servomotor control system |
| 12/04/1984 | US4486698 Method for operating a frequency converter with intermediate DC link for supplying a rotating-field machine |
| 11/27/1984 | CA1178657A1 Control circuit for reducing hum in split phase electric motors |
| 11/27/1984 | CA1178654A1 Induction type position system |
| 11/14/1984 | EP0124698A1 Speed regulated motor drive |
| 11/13/1984 | US4481786 Electronic control for a domestic appliance |
| 11/13/1984 | CA1177877A1 Control apparatus for single phase ac induction motor |
| 11/07/1984 | EP0123728A1 Circuit for monitoring electric motors |
| 11/06/1984 | US4481448 Automatic electrical motor speed control |
| 11/06/1984 | CA1177532A1 Wound rotor motor apparatus |
| 10/30/1984 | US4480215 Synchronous electric motor control systems |
| 10/25/1984 | WO1984004213A1 Electric power delivery system and method |
| 10/23/1984 | CA1176703A1 Method for operating a frequency converter with intermediate dc link for supplying a rotating-field machine |
| 10/16/1984 | US4477762 Servomotor control method and apparatus therefor |
| 10/16/1984 | US4477760 Continuous pole amplitude modulated electric machines |
| 10/09/1984 | US4476422 Single phase four pole/six pole motor |
| 10/02/1984 | CA1175534A1 Hall switch pump |
| 09/25/1984 | US4473788 Single phase two pole/six pole motor |
| 09/25/1984 | CA1175101A1 Power factor controller |
| 09/19/1984 | EP0119142A1 Electric motor power supply unit for a portable machine allowing protection against the reaction torque |
| 09/18/1984 | US4472670 Simplified connections to control speed relating to electrical rotating machinery |
| 09/18/1984 | CA1174753A1 Clutch motor arrangement |