Control circuit for an inductive load

Details Control circuit for an inductive load Control circuit for an inductive load

H - Electricity

02

P

H02P 7/29 (2006.01) H02P 25/08 (2006.01)

Patent

CA 2147583

A control circuit for an inductive load, such as a phase winding of a reluctance motor, includes a boost flyback converter. The controller includes a dc link capacitor switchable across the load by means of a control switch and a suppressor switch for controlling the application of rectified current to the dc link capacitor. The suppressor switch is operated independently of the control switch in order to control the rectified current so that is follows the sinusoidal input voltage waveform. By this technique, the harmonics generated by switching the rectified input current are substantially suppressed.

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