| 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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| 03/17/1987 | US4651078 Device for driving an induction motor |
| 03/12/1987 | WO1987001529A1 Modulation method and apparatus for static power frequency changers |
| 03/11/1987 | CN85106848A Method of controlling the converter drive type inductive motor |
| 03/10/1987 | US4649331 Flux-weakening regime operation of an interior permanent magnet synchronous motor |
| 02/26/1987 | WO1987001250A1 Method of controlling a three-phase induction motor |
| 02/25/1987 | CN86101211A Composite control apparatus of induction motors |
| 02/12/1987 | WO1987000992A1 Induction motor drive arrangement |
| 02/12/1987 | DE3527844A1 Circuit arrangement for frequency adjustment of a DC voltage intermediate-circuit converter with a constant output voltage |
| 02/10/1987 | US4642546 Method and apparatus for operating a load supplied via an intermediate-link converter, especially an asynchronous machine, in the event of a network disturbance |
| 02/10/1987 | US4642545 Static phase conversion circuits for three-phase motors |
| 02/10/1987 | US4642474 Elevator rescue apparatus during stoppage of power supply |
| 02/03/1987 | US4641075 Method of and apparatus for controlling current of inverter |
| 02/03/1987 | US4640389 System for controlling a motor |
| 01/22/1987 | DE3525421A1 Method and circuit arrangement for reducing the torque ripple of a converter motor in the low speed range |
| 01/15/1987 | WO1987000364A1 Method and device for reducing iron and copper losses in an induction motor |
| 01/14/1987 | EP0208381A1 Frequency and/or voltage control device for at least partially inductive loads, in particular three-phase motors |
| 01/13/1987 | US4636928 Inverter-drive controlling apparatus |
| 01/13/1987 | US4636702 Energy economizer controlled-current start and protection for induction motors |
| 01/08/1987 | DE3523529A1 Verfahren und vorrichtung zur verminderung der eisen- und kupferverluste eines induktionsmotors Method and device for rundown of iron and copper losses of an induction motor |
| 01/06/1987 | US4634952 Inverter |
| 01/02/1987 | DE3522442A1 Device for modulation of the impressed intermediate-circuit current of an I-converter |
| 12/30/1986 | US4633158 Control system for an AC motor |
| 12/30/1986 | US4633157 Control system for permanent magnet synchronous motor |
| 12/23/1986 | US4631467 Escalator passenger flow control |
| 12/23/1986 | CA1215792A1 Method and apparatus for fault time operating of an elevator |
| 12/17/1986 | CN86103291A Control device for elevator |
| 12/16/1986 | US4629961 Method and apparatus for stabilizing the locus of a vector formed by integration |
| 12/16/1986 | US4629960 Induction motor controller |
| 12/16/1986 | US4629959 Method and apparatus for controlling PWM inverter |
| 12/16/1986 | US4629958 Synchronous motor control system |
| 12/16/1986 | US4629035 Speed control apparatus for elevator |
| 12/09/1986 | US4628475 Pulse width modulation pulse generator |
| 12/09/1986 | US4628240 Synchronous motor control system |
| 12/09/1986 | US4627370 Sewing machine drive device |
| 12/03/1986 | EP0203145A1 Microprocessor speed controller |
| 12/02/1986 | US4626763 Inverter system with hysteresis transition between pulse width modulation mode and pure square wave mode of operation |
| 12/02/1986 | US4626762 AC motor control system |
| 12/02/1986 | US4625834 Speed control apparatus for elevator |
| 11/26/1986 | EP0202603A2 Cross coupled current regulator |
| 11/25/1986 | US4625159 Control apparatus for elevator |
| 11/25/1986 | US4625158 Motor control circuit for variable reluctance motor |
| 11/25/1986 | US4624343 Speed control apparatus for elevator |
| 11/20/1986 | EP0201872A2 Flux-weakening regime operation of an interior permanent magnet sychronous motor |
| 11/18/1986 | US4623042 Elevator control apparatus |
| 11/18/1986 | CA1214291A1 Elevator polyphase motor control |
| 11/18/1986 | CA1214206A1 Speed reducing control system for a polyphase electric motor |
| 10/29/1986 | EP0113735B1 Method and device for controlling the rotation speed of a pump driving asynchronous motor |
| 10/28/1986 | US4620143 Digital pulse width modulation motor control system |
| 10/28/1986 | US4620140 Control device for variable speed electric motor |
| 10/28/1986 | CA1213318A1 Stabilising circuit for an inverse rectifier motor control |
| 10/23/1986 | WO1986006227A1 Method of controlling a three-phase induction motor |
| 10/22/1986 | EP0198799A1 Control device for an electromagnetic linear motor |
| 10/22/1986 | EP0198204A2 Method and device for DC-AC converting |
| 10/21/1986 | US4618810 Variable speed AC motor control system |
| 10/21/1986 | US4618805 Device for regulating rotary speed of an alternating current electric motor |
| 10/15/1986 | CN86101770A Continuous mill plant for rolling steel plates |
| 10/08/1986 | EP0196846A1 Method and apparatus for controlling an electric A.C. motor |
| 09/16/1986 | CA1211577A1 Data input and output device for a drive regulation apparatus operated by a digital computer |
| 09/16/1986 | CA1211499A1 Control circuit for a synchronous motor with two windings |
| 09/12/1986 | WO1986005337A1 Multi-phase squirrel-cage induction motor |
| 09/10/1986 | CN86101421A Elevator rescue apparatus during stoppage of power supply |
| 09/09/1986 | US4611159 AC motor control system |
| 09/03/1986 | EP0193212A2 Method for processing as a frequency submitted measured value |
| 09/03/1986 | EP0193155A1 Continuous multi-stand mill plant for rolling steel plates |
| 09/03/1986 | EP0193067A1 Three-phase motor powered by a multiphase direct converter arrangement |
| 09/03/1986 | EP0192960A1 Alternating current motor having current filter |
| 09/03/1986 | EP0192959A1 Flux control for induction motor drive using load commutated inverter circuit |
| 08/28/1986 | WO1986005043A1 System for controlling torque of induction motor |
| 08/20/1986 | EP0191109A1 Pwm control system for ac motors |
| 08/19/1986 | US4607321 Inverter |
| 08/19/1986 | US4607206 Flux control for induction motor drive using load commutated inverter circuit |
| 08/19/1986 | US4607205 Method and system for reconnecting inverter to rotating motors |
| 08/19/1986 | CA1210055A1 Precision electronic speed controller for an alternating-current motor |
| 08/06/1986 | EP0190066A1 Variable-speed drive for an alternating-current motor |
| 08/06/1986 | EP0189832A1 Excitation current control for induction motor drive using load commutated inverter circuit |
| 07/29/1986 | US4602701 Apparatus for controlling the speed of an elevator |
| 07/24/1986 | EP0171415A4 Current sense demodulator. |
| 07/23/1986 | EP0188239A2 Power supply systems for reluctance motors |
| 07/23/1986 | EP0187867A1 Method of and apparatus for controlling a synchronous motor |
| 07/23/1986 | CN85107533A Apparatus for operating elevator of the type of winding drum |
| 07/22/1986 | US4602201 PWM motor drive with torque determination |
| 07/22/1986 | US4602200 Alternating current motor drive having current filter |
| 07/22/1986 | US4602199 Control for induction motor drive using load commutated inverter circuit |
| 07/22/1986 | US4602198 Induction motor drive using load commutated inverter circuit |
| 07/22/1986 | US4601351 Electrically driven hammer machine |
| 07/22/1986 | CA1208381A1 Apparatus for controlling an a-c power elevator |
| 07/15/1986 | US4600874 Excitation current control for induction motor drive using load commutated inverter circuit |
| 07/15/1986 | US4600872 Apparatus for variable speed drive of an induction motor from a fixed frequency AC source |
| 07/15/1986 | US4600088 Apparatus for controlling elevators |
| 07/15/1986 | CA1207834A1 Unrestricted frequency changer system and adjustable frequency ac motor drive using such a system |
| 07/08/1986 | US4599549 Method and apparatus for controlling PWM inverters |
| 07/08/1986 | CA1207379A1 Induction motor controller |
| 07/03/1986 | WO1986003839A1 Solid phase diffusion assay |
| 07/02/1986 | EP0185773A1 Control board for ac motors |
| 07/01/1986 | US4598354 Data input and output device for a drive regulation apparatus operated by a digital computer |
| 06/25/1986 | EP0185212A1 Control system for a power converter driving a synchronous motor |
| 06/24/1986 | US4597039 Switched capacitor induction motor drive |
| 06/24/1986 | CA1206520A1 Starting system for chopper controlled motor- commutated thyristor inverter |
| 05/27/1986 | CA1205224A1 Velocity control apparatus for an elevator |
| 05/27/1986 | CA1205223A1 Control apparatus for elevator |