Induction Machine (IM) and Variable Frecuency Driver (V/f type) starting from the DC bus feeding the power mosfets, which are driven using PWM.

For a given motor the DC power supply or battery must be adjusted to the rms line voltage times square root of 2. and the V_to_f gain must also be adjusted to Vrms/nominal freq.

After that, only the frequency imput needs to be changed according to the desired speed or operating point

Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.

Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.

Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.

Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.