TREA

Arrangements or methods for the control of AC motors characterised by the kind of supply voltage

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Industry

  • CPC
  • H02P27/00
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Parent Industries

HELECTRICITY H02Electric power H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

Current Industry

H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage

Sub Industries

H02P27/02using supply voltage with constant frequency and variable amplitude H02P27/024using AC supply for only the rotor circuit or only the stator circuit H02P27/026whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value H02P27/04using variable-frequency supply voltage H02P27/045whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value H02P27/047V/F converter, wherein the voltage is controlled proportionally with the frequency H02P27/048using AC supply for only the rotor circuit or only the stator circuit H02P27/05using AC supply for both the rotor and the stator circuits, the frequency of supply to at least one circuit being variable H02P27/06using dc to ac converters or inverters H02P27/08with pulse width modulation H02P27/085wherein the PWM mode is adapted on the running conditions of the motor H02P27/10using bang-bang controllers H02P27/12pulsing by guiding the flux vector, current vector or voltage vector on a circle or a closed curve H02P27/14with three or more levels of voltage H02P27/16using ac to ac converters without intermediate conversion to dc H02P27/18varying the frequency by omitting half waves
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