Effect of harmonics in 3 phase induction motor
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the harmonics caused due to variation of air gap reluctance are called tooth or slot harmonics . Due to these harmonics produced in air gap flux, unwanted torque are developed along with vibration and noise.
The third harmonic flux waves produced by each of the three phases neutralize each other as it differs in time phase by 120o. Thus air gap flux does not contain third harmonics and its multiplies.
The third harmonic flux waves produced by each of the three phases neutralize each other as it differs in time phase by 120o. Thus air gap flux does not contain third harmonics and its multiplies.
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