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Class Information
Number: 318/727
Name: Electricity: motive power systems > Induction motor systems
Description: Subject matter wherein the system of supply and/or control is for an induction motor.










Sub-classes under this class:

Class Number Class Name Patents
318/757 Braking 80
318/729 Power-factor control 243
318/766 Primary and secondary circuits 17
318/767 Primary circuit control 129
318/728 Repulsion start 4
318/739 Reversing 37
318/818 Secondary circuit control 19
318/737 Self-cascaded motor windings 12
318/738 With commutated winding 19
318/730 With plural separately movable rotors 15
318/830 With relatively movable cooperating motor parts to control energized motor 6
318/731 With voltage source connected to motor secondary 11


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8680796 Control device and control method for power converter Mar. 25, 2014
8674634 Controller for a brushless motor Mar. 18, 2014
8674645 Drive for a machine with pulse-decoupled working point adjustment Mar. 18, 2014
8674647 Drive device for alternating current motor and electric motor vehicle Mar. 18, 2014
8676524 System for computing machine parameters of an induction machine Mar. 18, 2014
8664908 Method and device for an induction motor start Mar. 4, 2014
8659248 Drive device for electric power conversion circuit Feb. 25, 2014
8648562 Single power supply dual converter open-winding machine drive Feb. 11, 2014
8638059 Control for multi-phase induction motor Jan. 28, 2014
8633668 Single phase motor energy economizer for regulating the use of electricity Jan. 21, 2014
8629636 Alternating-current electric motor of a combined electric device for powering and charging Jan. 14, 2014
8624542 Methods and systems for controlling a multiphase electromagnetic machine Jan. 7, 2014
8626063 Wireless telemetry auto tuning for torque measurement system Jan. 7, 2014
8604745 Apparatus and method for rotating-sensorless identification of mechanical parameters of a three-phase asynchronous motor Dec. 10, 2013
8587239 Apparatus and method for sensorless identification of rotating electrical equivalent circuit parameters of a three-phase asynchronous motor Nov. 19, 2013
8577527 Drive control device for a vehicle Nov. 5, 2013
8558497 Reduced electromagnetic interference for pulse-width modulation Oct. 15, 2013
8536811 Engagement of a spinning AC induction motor Sep. 17, 2013
8536816 Method and system for detecting faults in a brushless exciter Sep. 17, 2013
8525464 Rotation detecting apparatus and rotation detecting system Sep. 3, 2013
8525454 Controller for AC rotary machine Sep. 3, 2013
8519652 Control apparatus for electric rotating machine Aug. 27, 2013
8519662 Method and apparatus for controlling motor torque Aug. 27, 2013
8502492 Single phase motor energy economizer for regulating the use of electricity Aug. 6, 2013
8502493 Control device and control method for alternating-current motor Aug. 6, 2013
8471519 Control device and control method for AC motor Jun. 25, 2013
8446119 Controlling an electric motor by dynamic switching May. 21, 2013
8441225 Direct-current to three-phase alternating-current inverter system May. 14, 2013
8415910 Switch module for an electric machine having switchable stator windings Apr. 9, 2013
8415916 Estimation of parameters of an induction machine Apr. 9, 2013
8411804 Digital demodulation of pulse-width modulated signals Apr. 2, 2013
8405329 Motor drive controller and image forming apparatus incorporating the motor drive controller Mar. 26, 2013
8405342 Motor Mar. 26, 2013
8400088 Sensorless control of salient-pole machines Mar. 19, 2013
8390240 Absolute position sensor for field-oriented control of an induction motor Mar. 5, 2013
8390239 Control circuit for single-phase AC motor of dryer Mar. 5, 2013
8390228 Methods and systems for induction machine control Mar. 5, 2013
8390227 Electric power control system and efficiency optimization process for a polyphase synchronous machine Mar. 5, 2013
8384323 Motor magnetic-pole-position estimating apparatus Feb. 26, 2013
8384338 System and method for determining stator winding resistance in an AC motor using motor drives Feb. 26, 2013
8378619 Motor start circuit for an induction motor Feb. 19, 2013
8373369 Method and amplifier for operating a synchronous motor Feb. 12, 2013
8373378 Systems and method for motor speed control Feb. 12, 2013
8373379 Methods and devices for estimation of induction motor inductance parameters Feb. 12, 2013
8373380 Device and method for controlling alternating-current motor Feb. 12, 2013
8368342 Apparatus and method for generating electromagnetic torque in an electric machine Feb. 5, 2013
8362732 Motor phase winding fault detection method and apparatus Jan. 29, 2013
8362735 Single phase motor energy economizer for regulating the use of electricity Jan. 29, 2013
8354817 Methods and systems for diagnosing stator windings in an electric motor Jan. 15, 2013
8344669 Methods and systems for controlling a multiphase electromagnetic machine Jan. 1, 2013

1 2 3 4 5 6 7 8 9 10










 
 
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