Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage
Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284)
07/1982
07/22/1982WO1982002461A1 Induction motor drive system
07/20/1982US4340847 Apparatus for supervising and controlling the output power of induction motors
07/19/1982EP0048261A4 Microcomputer controlled power tool.
07/13/1982EP0047251A4 Simplified power factor controller for induction motor.
07/06/1982US4338559 Load state control for an asynchronous machine fed by a converter
07/06/1982US4338558 Induction motor control system and method
07/06/1982US4338557 Variable speed electric machine having controlled magnetic flux density
06/1982
06/29/1982US4337429 A.C. Motor control circuit
06/16/1982EP0053916A1 Control system for induction motor using inverter for AC power supply
06/16/1982EP0053799A1 Method and circuit arrangement for regulating or controlling the speed of a three-phase AC motor
06/15/1982US4335343 Circuit for generating an electric signal proportional to a flux component of a rotating-field machine
06/15/1982US4335342 Reciprocating drive system for a body such as a carriage supporting electrostatic means for spraying a pulverized material, the system including an asynchronous squirrel cage motor
06/08/1982US4334182 Motor control system
06/02/1982EP0052659A1 Motor voltage controller device
06/01/1982US4333042 System for driving a motor by a pulse width modulation inverter
06/01/1982US4332208 Sewing machine speed control circuit
05/1982
05/25/1982US4331887 Current switch driving circuit arrangements
05/25/1982CA1124321A1 Motor speed adjusting apparatus
05/19/1982EP0051903A1 Three phase power factor controller
05/18/1982US4330817 Process and system for controlling the energization of a load
05/18/1982US4330741 Electric control apparatus of induction motor
05/18/1982CA1123908A1 Circuit arrangement for generating a pulse-width modulated signal
05/13/1982WO1982001628A1 Method and apparatus for controlling an ac induction motor
05/12/1982EP0051478A2 Induction motor control system
05/04/1982US4328454 Apparatus for controlling ac motor
04/1982
04/27/1982US4327315 Induction motor drive apparatus
04/27/1982US4327314 Inverter system for driving synchronous motor
04/27/1982US4327313 Control apparatus for electric car
04/20/1982CA1122270A1 Motor control arrangement
04/14/1982EP0049649A1 A.C. motor powering arrangement with means for limiting the power delivered to an A.C. motor
04/13/1982US4325095 Means for limiting power dissipated in an A.C. motor
04/06/1982US4323835 Simplified power factor controller for induction motor
03/1982
03/31/1982EP0048261A1 Microcomputer controlled power tool
03/30/1982US4322671 Induction motor drive apparatus
03/24/1982EP0047893A2 Device for the field-oriented operation of a converter-fed asynchronous machine
03/23/1982US4321516 Apparatus for driving spindles of machine tools with induction motors
03/17/1982EP0047251A1 Simplified power factor controller for induction motor
03/16/1982US4320332 Speed control system for induction motor
03/16/1982US4320331 Transistorized current controlled pulse width modulated inverter machine drive system
03/16/1982CA1120135A1 Beam pumping unit speed control
03/09/1982US4319176 Synchronous machine drive apparatus
02/1982
02/23/1982US4317176 Microcomputer controlled power tool
02/23/1982US4317074 Inverter-motor system with different control characteristics for inverter voltage and frequency
02/17/1982EP0045951A2 Process for operating an inverter with an intermediate DC link circuit supplying an electric synchronous motor
02/10/1982EP0045468A1 Device for bridging short-time network failures in voltage converters with an intermediate link
02/09/1982US4315203 Control system for induction motor-driven car
02/05/1982EP0036424A4 Circuit arrangement for an asynchronous motor drive with variable speed.
02/02/1982US4314191 Protective system for inverter circuit used in driving AC motors
01/1982
01/20/1982EP0043973A1 Rotating-field machine drive consisting of an inverter-controlled rotating-field machine, and a control system for an inverter connected to two alternating voltage integrators and a model computer circuit
01/19/1982US4312031 Apparatus for controlling current type inverters
01/19/1982US4311951 Apparatus and method for high slip operation of an AC electric motor at substantially zero rotation and substantially zero torque
01/12/1982US4310791 Induction motor control system
12/1981
12/30/1981EP0042512A1 Current switch driving circuitry
12/29/1981CA1115392A1 Electrical propulsion process for a traction vehicle with an on-board source of power
12/22/1981US4307328 AC Motor apparatus
12/15/1981US4306182 Polyphase motor drive system with balanced modulation
12/10/1981WO1981003586A1 Motor voltage controller device
11/1981
11/24/1981US4302713 Fixed gating sequence apparatus and method for an inverter
11/10/1981US4300086 Control circuit for A.C. induction motor
11/10/1981US4300077 Trans-synchronous motor apparatus and method
11/04/1981EP0039281A2 Intermediate circuit adapter for static converter assembly
10/1981
10/27/1981US4297628 Energy economizer for induction motors
10/20/1981US4296367 Speed control method for AC motors and an apparatus for the control
10/13/1981US4295189 Apparatus and method for generating waveforms which are particularly suitable for a PWM-driven motor
10/07/1981EP0037307A1 Speed control system for an induction motor with a double stator
10/01/1981WO1981002818A1 Microcomputer controlled power tool
09/1981
09/30/1981EP0036424A1 Circuit arrangement for an asynchronous motor drive with variable speed.
09/29/1981US4292577 A.C. Motor control circuit
09/22/1981US4291265 Protective system for inverter circuit used in driving AC motors
09/22/1981US4291264 Power factor control system for inverter-driven a-c induction motor
09/17/1981WO1981002651A1 Simplified power factor controller for induction motor
09/15/1981US4290001 Closed loop, microcomputer controlled pulse width modulated inverter-induction machine drive system
09/02/1981EP0034808A2 Circuit arrangement for the compensation of a phase difference
09/01/1981US4287463 Zero rotation and zero torque detector and method for an AC electric motor drive
08/1981
08/25/1981US4286315 Converter apparatus
08/25/1981US4286203 Slip frequency control for variable speed induction motors
08/11/1981US4282719 Control system for regulating large capacity rotating machinery
08/04/1981US4282473 Rotating field machine drive and method
07/1981
07/28/1981US4281375 Static frequency converter
07/28/1981US4281276 Dual mode AC motor drive system
07/28/1981CA1105988A1 Synchronous machine drive apparatus
07/23/1981WO1981002076A1 Method and apparatus for controlling an ac induction motor
07/21/1981US4280085 Apparatus and method for providing a signal proportional to flux in an AC motor for control of motor drive current
07/09/1981WO1981001920A1 Energy recovery device for thyratron inverter
07/08/1981EP0031780A1 Device for energy recovery from an inverter
07/08/1981EP0031612A1 A commutating device for driving a load
07/07/1981US4277735 Control apparatus for induction motor
07/01/1981EP0031117A2 Method and device for controlling the torque and/or the number of revolutions of a converter-controlled asynchronous machine
06/1981
06/23/1981CA1103755A1 Induction motor control system
06/17/1981EP0030468A1 Cycloconverters and methods of operating them
06/17/1981EP0030462A2 Induction motor drive apparatus
06/16/1981US4274042 AC Motor drive system having clamped command error signal
06/11/1981WO1981001635A1 Cycloconverters and methods of operating them
06/09/1981US4272715 System for controlling torque of induction motors
06/09/1981CA1102869A1 Power circuit for variable frequency, variable magnitude power conditioning system
05/1981
05/19/1981US4268900 Device for controlling a plurality of converters
05/12/1981US4267500 Control cooling means
05/12/1981US4267499 Method and system for controlling induction motors
05/12/1981US4266432 Gyro motor control
04/1981
04/21/1981US4263541 Field control system for controlling induction machines
1 ... 121 122 123 124 125 126 127 128 129 130 131 132 133