Excitation of switched reluctance motors

Details Excitation of switched reluctance motors Excitation of switched reluctance motors

2007-04-24

2007-04-24

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

C318S254100, C318S702000

Reexamination Certificate

active

10837140

ABSTRACT:
A switched reluctance drive is supplied from a power source. The phases of the machine are controlled by a current controller which uses an excitation strategy to minimize the supply current drawn for a particular output. The strategy alternates the excitation between two phases for a given time until the rotor moves to a desired position. A method of starting a switched reluctance motor having a stator with at least two phases, a moveable part, and a position transducer includes determining from transducer output a plurality of phases that are available to produce force in a desired direction, energizing a first phase of the available phases for a predetermined time period that is independent of the transducer output, and energizing a second phase of the available phases after energization of the first phase is initiated.

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