| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
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| 05/29/1985 | EP0142563A1 System of controlling synchronous motor |
| 05/28/1985 | US4520298 Method and apparatus for sampling output AC currents in a voltage-fed inverter power supply |
| 05/28/1985 | US4519479 Safety apparatus for elevator |
| 05/21/1985 | US4518908 Control circuit of a synchronous motor with two induction windings |
| 05/14/1985 | US4516665 Elevator control system |
| 05/14/1985 | US4516664 Apparatus for controlling an A-C powered elevator |
| 05/08/1985 | EP0140424A1 Motor speed control arrangement |
| 05/07/1985 | US4516222 Laminated magnetic bubble device |
| 05/07/1985 | US4516065 Control apparatus for AC motors |
| 05/07/1985 | CA1186727A1 Device for the field-oriented operation of a converter-fed asynchronous machine |
| 05/07/1985 | CA1186726A1 Inverter circuit for operating a speed-controllable asynchronous motor |
| 05/02/1985 | EP0139006A1 System for controlling synchronous motor |
| 04/16/1985 | US4511978 Device for determining a parameter signal for a voltage-fed load |
| 04/16/1985 | US4511835 Voltage-controlled, inverter-motor system |
| 04/16/1985 | US4511834 Control and stabilizing system for damperless synchronous motor |
| 04/16/1985 | US4511312 Method of driving the impeller of a liquid pump by means of a brushless a.c. motor; and a liquid pump for carrying out the method |
| 04/16/1985 | CA1185653A1 Stabilizing circuit for controlled inverter-motor system |
| 04/10/1985 | EP0136856A2 Controller for induction motors |
| 04/09/1985 | US4510430 Vector control method and system for an induction motor |
| 04/09/1985 | CA1185317A1 Self generative variable speed induction motor drive |
| 04/02/1985 | US4509004 Apparatus for variable speed drive of an induction motor from a fixed frequency AC source |
| 03/26/1985 | US4506766 Method and apparatus for fault time operating of an elevator _ |
| 03/05/1985 | US4503376 Control method for induction motors |
| 03/05/1985 | US4503375 Method for controlling induction motor and apparatus therefor |
| 03/05/1985 | US4503371 Mass driver circuit for weaving looms |
| 03/05/1985 | CA1183573A1 Method and apparatus for controlling an alternating current motor load using plural controlled-current inverter circuits |
| 02/26/1985 | US4502005 Method and apparatus for determining the angle between the air-gap flux vector and the stator current vector of an asynchronous machine fed from an intermediate current-link frequency converter |
| 02/18/1985 | EP0118544A4 Improved induction motor controller. |
| 02/12/1985 | US4499414 AC Motor control method |
| 02/12/1985 | US4499413 Method and apparatus for the control of synchronous motors |
| 02/12/1985 | CA1182518A1 Motor power factor controller with a reduced voltage starter |
| 02/12/1985 | CA1182517A1 Motor control systems |
| 01/30/1985 | EP0132361A2 Motor speed control circuit |
| 01/29/1985 | US4496894 Arrangement for controllably driving an A.C. motor |
| 01/29/1985 | US4496886 Three state driver for inductive loads |
| 01/29/1985 | CA1181800A1 Rotating field machine drive |
| 01/15/1985 | US4494054 Electric power delivery system and method |
| 01/15/1985 | US4493398 Drive control for a transportation system, especially an elevator |
| 01/08/1985 | US4492526 Compressor drive system |
| 01/01/1985 | US4491197 Speed control apparatus for A.C. elevator car drive motor |
| 12/25/1984 | US4490666 Control of induction motor using PWM inverter |
| 12/25/1984 | US4490656 Overload protection in a motor control system |
| 12/20/1984 | WO1984005000A1 Variable slip drive system for induction motor |
| 12/19/1984 | EP0128796A1 Method of controlling the supply of electric motors, and apparatus for carrying out the method |
| 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 | US4489267 Waveform synthesizer and motor 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 | US4489261 Method and means for feeding electric energy to a portable power tool |
| 12/11/1984 | US4488216 Unrestricted frequency changer system and adjustable frequency AC motor drive using such a system |
| 12/11/1984 | US4488215 Method and apparatus for controlling the load current of a pulsed frequency converter |
| 12/11/1984 | US4488103 Motor control method and control apparatus therefor |
| 12/11/1984 | US4488101 Starting system for chopper controlled motor-commutated thyristor inverter |
| 12/11/1984 | US4488100 Motor controller |
| 12/05/1984 | EP0127306A1 Improved unrestricted frequency changer system and adjustable frequency AC motor drive using such a system |
| 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 |
| 11/20/1984 | US4484129 Speed control apparatus for polyphase induction motors |
| 11/20/1984 | US4484128 Vector control system for AC motor drives |
| 11/20/1984 | US4484126 Induction motor controller |
| 11/14/1984 | EP0124719A1 Current-type GTO/inverter |
| 11/14/1984 | EP0124619A1 Controller for ac motor |
| 11/13/1984 | US4482031 AC elevator control apparatus |
| 11/13/1984 | US4481786 Electronic control for a domestic appliance |
| 11/13/1984 | CA1177877A1 Control apparatus for single phase ac induction motor |
| 11/06/1984 | US4481601 Method and circuitry for approximating the magnitude of a vector |
| 11/06/1984 | US4481457 Method for providing adaptive control of variable speed AC motor drives |
| 11/06/1984 | US4481456 Microprocessor controlled multifrequency AC converter |
| 11/06/1984 | CA1177532A1 Wound rotor motor apparatus |
| 10/30/1984 | US4480301 Method and apparatus for controlling a pulsed frequency converter |
| 10/30/1984 | US4480299 Method of controlling the output voltage of a pulse width modulation inverter |
| 10/30/1984 | US4479565 Control apparatus for a.c. elevator |
| 10/25/1984 | WO1984004214A1 Inverter apparatus |
| 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 |
| 10/17/1984 | EP0121696A1 Method and circuit arrangement for controlling an alternating current or a three-phase motor |
| 10/17/1984 | EP0121575A1 Controller for motor |
| 10/16/1984 | US4477763 Method of controlling inverter and system therefor |
| 10/16/1984 | US4477762 Servomotor control method and apparatus therefor |
| 10/16/1984 | US4477761 Method of and system for minimizing current consumption of one or more A-C motors driving a variable load |
| 10/10/1984 | EP0049241B1 Method and apparatus for controlling an ac induction motor |
| 10/09/1984 | US4476424 Variable speed induction motor drive system |
| 10/09/1984 | US4475631 AC Elevator control system |
| 10/02/1984 | US4475074 Apparatus for determining the common frequency of two independently variable electrical a-c variables, especially in a rotating-field machine |
| 09/26/1984 | EP0119583A1 AC current control system |
| 09/26/1984 | EP0119374A1 Method of controlling the running of an electrical machine, and device using this method |
| 09/25/1984 | US4473790 Control circuit for suppression of line resonances in current feedback pulse width modulation control systems with a minimum d-c filter |
| 09/25/1984 | CA1175101A1 Power factor controller |
| 09/19/1984 | EP0118544A1 Improved induction motor controller |
| 09/18/1984 | US4472671 Inverter startup circuit |
| 09/18/1984 | US4471855 Control device for an A.C. elevator |
| 09/13/1984 | WO1984003596A1 Method of controlling synchronous motor |
| 09/13/1984 | WO1984003486A1 Apparatus for controlling ac elevator |
| 09/13/1984 | EP0087429A4 Marine drive system. |
| 09/11/1984 | US4471285 System for variable speed operation of induction motors |
| 09/05/1984 | EP0117514A2 Method for controlling induction motor and apparatus therefor |
| 09/04/1984 | US4470000 Apparatus and method for simulating the machine flux of a rotating field machine |
| 09/04/1984 | US4469997 Self generative PWM voltage source inverter induction motor drive |
| 08/29/1984 | EP0116908A2 Control arrangement and system comprising this control arrangement and an inverter for induction motor speed controller |
| 08/28/1984 | US4468726 Optically-triggered half-frequency AC converter |