Power converter for ac load

Details Power converter for ac load Power converter for ac load

H - Electricity

02

P

321/24

H02P 1/30 (2006.01) H02M 5/45 (2006.01) H02M 5/451 (2006.01) H02M 7/757 (2006.01)

Patent

CA 1224245

- 55 - Abstract of the Disclosure A power converter for starting an AC induction motor includes a frequency detector which compares the frequency of an AC output of the converter with a predetermined frequency and generates a detection signal if the AC output frequency is lower than the predeter- mined frequency, a current controller which controls the power converter such that an AC output current supplied to the motor is determined in accordance with a given current reference if the detection signal is generated, and a voltage controller which controls the power converter so that an AC output voltage applied to the motor is regulated in accordance with a given voltage reference if the detection signal disappears.

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