The use of Feedback Quantizer PWM for shaping inverter noise spectrum

There has been a continuous development of PWM strategies addressing different inverter topologies, as well as requirements of efficiency and minimal distortion. One of such strategies recently proposed by the authors is Feedback Quantizer PWM (FBQ-PWM). In this paper we briefly describe FBQ-PWM and its fundamental differences from other PWM techniques. We then present a detailed study of FBQ-PWM application to inverter noise shaping as to avoid a particular frequency or a number of frequencies in the harmonic spectrum of the output voltage. We illustrate our study with detailed simulations in physics-based Saber environment. The paper is concluded by a summary of its main findings and notes on practical implementation.