Series: PWM and space-vector modulation

For the three-phase PWM inverter, there are three commonly used coefficients to indicate the DC voltage utilization level, i.e. Modulation Level (调制度) M = \cfrac{V_R}{V_T} where V_R is the magnitude (note, not fundamental amplitude) of modulation wave, V_T is the Read more about The modulation index of pulse width modulation (PWM)