| Patents for H02P 1 - Arrangements for starting electric motors or dynamo-electric converters (9,872) |
|---|
| 11/12/1991 | US5065305 Rotary phase converter having circuity for switching windings to provide reduced starting current with rapid, dependable starting |
| 11/06/1991 | EP0455237A2 Apparatus for controlling an electric motor |
| 11/06/1991 | CN2088307U Speed-regulating controller with silicon rectifier |
| 11/06/1991 | CN2088306U Switching device of power supply |
| 10/30/1991 | CN1055845A Modulation speed governing sterting method and unit for asynchronous ac motor |
| 10/29/1991 | US5061884 Current limiting control circuit for D.C. motors with line dropout protection |
| 10/16/1991 | CN2086948U Starting compensation control cabinet for low-voltage energy-saving cage motor |
| 10/09/1991 | CN2086476U Overhead travelling motor start stabilization device |
| 10/02/1991 | CN1055092A Large-power a.c. motor with differential frequency speed regulation |
| 10/01/1991 | US5053908 Psc motor start system |
| 09/24/1991 | US5051681 Electronic circuit for a single phase induction motor starting |
| 09/24/1991 | US5051680 Simple starting sequence for variable reluctance motors without rotor position sensor |
| 09/18/1991 | WO1991015053A2 Electronic switch supply unit |
| 09/18/1991 | EP0446936A2 Electric motor controller with bypass contactor |
| 09/17/1991 | US5049800 Motor output changeover control apparatus |
| 09/03/1991 | CA1288465C Electronic motor controls, laundry machines including such controls and/or methods of operating such controls |
| 08/27/1991 | US5043595 Power supply control subsystem for an image forming apparatus |
| 08/22/1991 | WO1991012651A1 Energy converter |
| 08/21/1991 | EP0442381A2 Loom operating apparatus and method |
| 08/20/1991 | US5041771 Motor starting circuit |
| 08/12/1991 | CA2009838A1 Current limiting control circuit for d.c. motors with line dropout protection |
| 07/31/1991 | CN2082048U Non-brush eddy starter of winding-type induction motor |
| 07/31/1991 | CN1053520A Energy-economizing techniques by connecting capacitor in series with stator of asynchronous motor and voltage-regulating and speed-regulating |
| 07/24/1991 | CN1053333A Control system for rare-earth permanent magnet brushless dc motor of refrigerator |
| 07/23/1991 | CA1286714C Start-up system for a synchronous motor drive |
| 07/17/1991 | CN2081173U Automatic electronic contactless switch for single-phase motor |
| 07/12/1991 | WO1991011052A1 Improved motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/12/1991 | CA2073438A1 Motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/11/1991 | WO1991010281A1 A method and an arrangement for starting an electrical machine having varying reluctance |
| 07/10/1991 | CN2080726U Common starting controller for starting two or more electric motors |
| 07/09/1991 | CA1285979C Electronically commutated coaxial starter motor/alternator for an internal combustion engine |
| 07/03/1991 | EP0435038A2 Controller for starting and stopping electric motors |
| 07/02/1991 | US5029265 Motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/02/1991 | US5028853 Switch actuation circuit and arrangement |
| 06/25/1991 | CA1285314C Motor starting circuit with low cost comparator hysteresis |
| 06/19/1991 | CN2079387U Electric motor automatic energy-saving controlling screen |
| 06/12/1991 | CN1052228A Electronic circuit for single phase induction motor starting |
| 06/05/1991 | EP0430662A2 PSC motor start system |
| 06/05/1991 | CN2078504U Oil-immersed manual star/delta voltage reducing starter |
| 06/04/1991 | US5020491 Method and apparatus for controlling power generation in internal combustion engines |
| 05/28/1991 | US5019956 Power control apparatus |
| 05/21/1991 | US5017853 Spikeless motor starting circuit |
| 05/21/1991 | CA1284350C Induction motor control apparatus and method for restart when rotating in shutdown |
| 05/21/1991 | CA1284349C Flux profile control for startup of an induction motor |
| 05/21/1991 | CA1284348C Bidirectional motor drive circuit |
| 05/15/1991 | CN2077171U Single-phase motor starting switch |
| 05/14/1991 | US5014793 Variable speed DC motor controller apparatus particularly adapted for control of portable-power tools |
| 04/28/1991 | WO1991007005A1 Multiple-stator synchronous induction motor |
| 04/25/1991 | DE4033121A1 Single-phase sync. motor starting in preferential direction - presetting rotor in specified position by isolated half-wave currents of progressively decreasing energy |
| 04/24/1991 | CN2075835U Suspension automatic star-triangle starter |
| 04/16/1991 | US5008608 Controller for starting and stopping electric motors |
| 04/10/1991 | CN2074953U Time-delay phase-division electric motor switch |
| 04/10/1991 | CN2074952U Refrigerator energy-saving device |
| 04/09/1991 | US5006768 Synchronous motor control |
| 03/26/1991 | CA1282111C Low cost instant reversing circuit |
| 03/20/1991 | CN2073631U Three phases changeable reactance starter |
| 03/20/1991 | CN1012056B Safety device for ac elevator |
| 03/13/1991 | CN1049941A Double-harmonic started and speed-regulated a.c. motor stator winding |
| 03/12/1991 | US4999560 Electric motor running system employing photovoltaic array |
| 03/12/1991 | CA1281358C Series resonant capacitor motor |
| 03/06/1991 | EP0415441A2 A power supply control subsystem for an image forming apparatus |
| 03/06/1991 | EP0414947A1 Spark protected on-load tap changing switch |
| 03/05/1991 | CA1281065C Parallel resonant single phase motor |
| 03/05/1991 | CA1281064C Capacitor-start parallel resonant motor |
| 02/26/1991 | US4996469 Electric motor controller with bypass contactor |
| 02/26/1991 | US4995478 Start compensation device for elevators |
| 02/14/1991 | DE3926611A1 Electronic run=up speed limitation esp. for drill - introducing brief delay with low-speed drive for centring purposes in prepn. for full-speed drilling |
| 02/12/1991 | US4992718 Electric floor cleaner with a soft start function |
| 02/12/1991 | CA1280154C Starter generator system with two stator exciter windings |
| 01/30/1991 | EP0410128A2 Superconductive voltage stabilizer |
| 01/22/1991 | US4987353 Current switching device for motor |
| 01/16/1991 | CN2069633U Star-delta automatic switching electricity-saving device for motor starting |
| 01/15/1991 | USRE33519 Method and apparatus for controlling induction motor |
| 01/09/1991 | EP0406400A1 Motor control circuit |
| 01/02/1991 | CN2068733U Large power a.c differential frequency speed-controlling motor |
| 12/31/1990 | CA2019925A1 Ptc electromechanical relay |
| 12/27/1990 | EP0404174A1 Circuit for reducing power consumption and improving perfomance of an asynchronous electric motor |
| 12/20/1990 | DE3919628A1 Capacitor start circuit for single phase induction motor - has two capacitors dimensioned to satisfy start and run condition with relay responding to rotor acceleration |
| 12/18/1990 | US4978903 Apparatus for the control of a three-phase a.c. motor, especially a squirrel-cage motor |
| 12/11/1990 | US4977362 Protection method and protection device for detecting asynchronism in the synchronous starting of a synchronous machine |
| 12/05/1990 | EP0400455A1 Synchronons motor as well as its operating method |
| 11/27/1990 | US4973934 PTC thermistor device |
| 11/06/1990 | CA1276033C Motor starting circuit |
| 10/31/1990 | EP0395589A1 Method and device for limiting the peak load |
| 10/30/1990 | US4967132 VSCF start system current estimator |
| 10/30/1990 | US4967131 Electronic motor starter |
| 10/18/1990 | DE4010572A1 Supply circuitry for rotary anode motor - for X=ray provides controller unit to supply each coil having separate power circuit |
| 10/17/1990 | CN1010070B Autocoupling reduced voltage starter without secondary surge current |
| 10/16/1990 | US4963810 Variable load motor drive control |
| 10/09/1990 | US4962354 Superconductive voltage stabilizer |
| 09/26/1990 | CN2062915U Device for protecting start of motor and saving electricity |
| 09/26/1990 | CN1045668A Wound-rotor asynchronous motor |
| 09/25/1990 | US4959747 Circuit arrangement for current limiting |
| 09/25/1990 | US4959598 Method and apparatus for controlling torque of a door opening and closing motor for an automatic door |
| 09/18/1990 | US4958269 Current control for microprocessor motor drive |
| 09/13/1990 | DE4005679A1 Time point switching determination for AC motor control - comparing phase position of voltage falling across switching elements to mains voltage phase position |
| 08/29/1990 | CN2061349U Energy-saving starting and current-limiting protector for phase-splitting electric motor |
| 08/15/1990 | CN2060609U Starter of single-phase asynchronous motor |
| 08/15/1990 | CN1044743A Step by step starting method for large or middle scale electric machine |
| 08/14/1990 | US4948209 Variable speed, constant frequency starter/generator |