Abstract:

In terms of the poor dynamic performance and sensitivity to load change in the output voltage of threephase full bridge inverter, a output voltage control scheme based on sliding mode control is proposed. In order to make the circuit operate at different carrier frequencies, taking advantage of the three phase inverter topology structure of voltage space vector pulse width modulation (SVPWM), the simulation shows that the scheme makes the output voltage has a smaller total harmonic distortion, good steady performance and strong load adaptability.

Key words: three phase full bridge inverter, sliding mode control, SVPWM