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What Is Harmonic Injection? [Solved]

A harmonic injection method is proposed for reduce permanent magnet. synchronous motor torque ripple and noise, which is based on harmonic model of PMSM. The effectiveness of the method is verified by simulation and experiment. It is proved that this method can significantly improve NVH performance of the motor.

Third-Harmonic Injection PWM Technique

Third

Third Harmonic Injection

Frequency of that that voltage is fluctuating so and it’s so third

Third harmonic addition in Sine PWM

Next, we will study about Third