Reduced noise controller for a switched reluctance machine

Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems

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318138, 318254, 318439, 318599, 318800, H02P 146

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058149651

ABSTRACT:
A reduced vibration and reduced noise controller for a switched reluctance machine system and a method for reducing unwanted vibration and noise produced by a switched reluctance machine system. The energization of the voltage across a phase winding in the switched reluctance machine is controlled such that the voltage across the phase winding varies over time in a controlled manner from a first voltage level to a second voltage level following a predefined switching event. The control of the transition of the voltage across the phase winding from the first voltage level to the second voltage level is accomplished through application of a succession of timed voltage pulses to the phase winding at a fixed point in time after the predefined switching event or through use of a capacitor smoothing circuit.

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