Control systems for ac induction motors

Details Control systems for ac induction motors Control systems for ac induction motors

H - Electricity

02

P

318/93

H02P 23/00 (2006.01) H02P 23/08 (2006.01)

Patent

CA 1192256

Abstract An AC induction motor control system wherein two pulse trains are generated, one pulse train including a pulse for each increment of rotor movement, and the other pulse train having pulses occurring at a rate proportional to slip. The pulse trains are combined in a counter which controls formation of synthesized winding excitations developed from pre-recorded sine values. The slip pulse train is developed according to pre-recorded slip factors selected as a function of rotor speed and modified in accordance with desired torque.

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