Motor control system for a single phase induction motor

Details Motor control system for a single phase induction motor Motor control system for a single phase induction motor

H - Electricity

02

P

318/72

H02P 1/42 (2006.01) G09G 1/04 (2006.01) H04N 3/16 (2006.01)

Patent

CA 1180376

MOTOR CONTROL SYSTEM FOR A SINGLE PHASE INDUCTION MOTOR ABSTRACT A single phase induction motor control system employs mains assisted starting and runs at higher than mains fre quency from an electronically generated inverter supply. This inverter supply is employed to provide an out of phase mains frequency signal to the run winding during starting in order to create the rotating magnetic field needed to start the motor. After the motor has started, the mains supply is disconnected from the start winding and the inverter supply frequency is increased gradually to a final value cor- responding to the desired operating speed. In this system no phase shifting capacitors are needed to provide the out of phase starting voltage and the run winding can be optimized for running conditions.

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