Method and a circuit for controlling an inverter to switch in the sliding mode and by PWM with a three-level output voltage

摘要

A method of converting a DC voltage (U) to a sinusoidal AC voltage (u) by means of a circuit comprising a single-phase inverter in a bridge configuration (10) is disclosed. To output a voltage to a truly sinusoidal pattern even in the presence of load variations, the method provides for control of the inverter switching using the sliding mode technique and pulse width modulation (PWM) with a three-level output voltage.;Also disclosed is a circuit for implementing the method.