Induction motor control apparatus and method

Details Induction motor control apparatus and method Induction motor control apparatus and method

B - Operations, Transporting

60

L

318/98

B60L 11/18 (2006.01) H02P 25/10 (2006.01)

Patent

CA 1285609

ABSTRACT OF THE DISCLOSURE A control apparatus and method are provided for a load energized by an inverter coupled with a DC power source. The lag current angle between the current and the load voltage is utilized to determine when the output current is positive and when the output current is nega- tive. The conduction times of the respective upper and lower gate turn off thyristors of each pole of the inverter are controlled in relation to the established current angle, with a provided modification of those conduction times being phased out in response to the desired output voltage for said load.

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