Power Electronics Handbook, 4th Edition

Example 35.9

Output voltage control in three-phase voltage-source inverters using sinusoidal wave PWM (SPWM) and space-vector modulation (SVM)

Sinusoidal wave PWM

Voltage-source three-phase inverters (Fig. 35.21) are often used to drive squirrel cage induction motors (IM) in variable speed applications.

Fig. 35.21 IGBT-based voltage-sourced three-phase inverter with induction motor.

Considering almost ideal power semiconductors, the output voltage u_bk(k∈{1, 2, 3}) dynamics of the inverter is negligible as the output voltage can hardly be considered a state variable in the time scale describing the motor behavior. Therefore, the best known method ...