Control circuit for an inductive load

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

1995-04-21

1996-10-08

Ro, Bentsu

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318254, H02P 705, H02K 1906

Patent

active

055634877

ABSTRACT:
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 it follows the sinusoidal input voltage waveform. By this technique, the harmonics generated by switching the rectified input current are substantially suppressed.

REFERENCES:
patent: 3679953 (1972-07-01), Bedford
patent: 4348619 (1982-09-01), Ray et al.
patent: 5010267 (1991-04-01), Lipo et al.
patent: 5115181 (1992-05-01), Sood
Stephenson and Blake, "The Characteristics, Design and Applications of Switched Reluctance Motors and Drives," (Jun. 1993, Nurenberg, Germany).

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