Analytical calculation on the harmonic effects of a three phase induction machine fed by a two phase voltage fed inverter using pulse width modulation with high switching frequency

The paper presents a novel analysis of the harmonic content of current, torque pulsations and harmonic copper losses of a three phase induction machine fed by a two phase PWM inverter. The purely analytical results are based on the assumption that the switching frequency is high compared with the fundamental frequency. However, it turns out that the results hold for frequency ratios fs/f1 > 9.