Method and device for detecting the motor position of an...

Electricity: motive power systems – Switched reluctance motor commutation control

Reexamination Certificate

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C318S132000, C318S434000

Reexamination Certificate

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06979966

ABSTRACT:
A method and device for detecting the motor position of a DC motor includes evaluating the back-induced voltage of non-energized motor windings of the motor only during predetermined time durations whose temporal position and duration are derived from drive signals for half-bridge circuits that are connected to the motor windings.

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Richard Oswald et al.: “The Brushless Spindle Motor: A background in the motors, magnetics, electrical circuits, and control systems”, pp. 23-26.
Marcel Jufer et al.: “Back EMF Indirect Detection for Self-Commutation of Synchronous Motors”,European Power Electronics,GlenobleSep. 22-24, 1987, pp. 1125-1129.

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