Method and apparatus for commutation of a brushless dc motor

Details Method and apparatus for commutation of a brushless dc motor Method and apparatus for commutation of a brushless dc motor

1991-08-06

1993-01-05

Wysocki, A. Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318 85, H02P 700

Patent

active

051774178

ABSTRACT:
An apparatus and method for the commutation of a brushless dc motor having a rotor and a plurality of coils, and an encoder generating quadrature signals responsive to the rotation of the rotor. The commutation apparatus comprises a commutation control device, coupled to the encoder, for controlling the sequence of motor coil energization utilizing the quadrature signals. The commutation method utilizes the quadrature signals for composite signal generation, rotor rotational direction and position to achieve precise commutation. Precision commutation is achieved without the need for any additional commutation sensing devices.

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