Study on the compensation of source and load non-linearities in a PWM inverter

The authors propose a study on the analysis of the operation of a single-phase PWM (Pulse Width Modulation) inverter structure — taking into account non-linearities such as an impedant supply or non-linear loads (Triacs, rectifiers, …). They analyze the control action in order to optimize the load voltage harmonic spectrum. Two principal considerations for the study are first, to avoid unduly increasing the switching frequency, and second, to optimize the power to weight ratio of the converter. Numerical simulations and experimental results are obtained to validate the proposed method.