Técnicas de modulação em largura de pulso com redução do número de comutações para conversores multiníveis

Abstract

This work presents a space vector PWM for three-level diode clamped converters. In the proposed technique, the number of commutations is minimized to reduce the switching loss. But, also are objectives of the method: the reduction of the total harmonic distortion of the output voltage, avoid the narrow pulse which are shorter than the minimum on/off time and voltage balancing of the dc-link capacitor. The DSP controller TMS320F2812 (Texas Instruments) was used for algorithm implementation. Both simulation and experimental results are presented to demons- trate the performance of the proposed method.