Torque ripple and noise reduction by avoiding mechanical...

Details Torque ripple and noise reduction by avoiding mechanical... Torque ripple and noise reduction by avoiding mechanical...

2005-02-22

2005-02-22

Duda, Rina (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S434000, C318S132000, C318S599000, C318S459000, C318S500000, C318S629000, C318S632000, C388S902000, C388S904000, C388S928100, C388S930000

Reexamination Certificate

active

06859001

ABSTRACT:
A method of reducing torque ripple and noise for an brushless DC machine comprising: determining a control frequency for the electric machine, the control frequency indicative of an existing current command to and a rotational velocity of the electric machine; multiplying the control frequency by a selected multiple and forming a modulating signal responsive thereto; and formulating a modified command profile. The method also includes: correlating and synchronizing the modified command profile with the existing current command and a rotor position for the electric machine; and generating a modulated current command to the electric machine.

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