[IEEE] Spread spectrum strategies study for induction motor vibratory and acoustic behavior

Authors Vincent Lanfranchi; Guy Friedrich; Jean Le Besnerais ; Michel Hecquet;
Status Published in: IEEE
Date 2006
Keywords Electromagnetically-excited noise, noise control, PWM, spread spectrum strategies

Abstract

This paper investigates the vibratory and acoustic behavior of the induction motor when fed by a power converter under PWM. The mechanical, electromagnetic and vibratory models of the stator vibrations generation process are first described. Then, different spread spectrum strategies are experimented and compared with natural sampling PWM as a reference strategy. The harmonics caused by the PWM can become of prime importance when matching a mechanical resonance: thus, the power converter design has a great influence on the motor vibratory and acoustic behaviour.

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Spread spectrum strategies study for induction motor vibratory and acoustic behavior

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