SPACE VECTOR PWM NINE SWITCH CONVERTER TOPOLOGY.

  • STEFÂNIA DE OLIVEIRA SILVA Universidade Federal de Campina Grande
  • WASHINGTON LUIZ ARAUJO NEVES Universidade Federal de Campina Grande
  • WELLINGTON SANTOS MOTA Universidade Federal de Campina Grande
Keywords: PWM, THD, Topologies, Nine Switch, Space vector, Nine-switches

Abstract

This article proposes a three-phase inverter topology with nine ac-ac switches, with sinusoidal inputs, unit power factor and low cost due to the reduced number of active switches. Pulse width modulation (PWM) techniques can be used for output voltage, such as triangular modulation or vector modulation. The proposed modulation for the inverter is designed to calculate the optimum operating point based on the specifications of maximizing the DC-link voltage while minimizing output voltage and switching losses (THD). The study of the vector technique uses the DC-link voltage more efficiently, generating smaller harmonic distortions when compared to other techniques. Relevant expressions, application requirements, and simulation results are presented for case identification where the nine-switches inverter can have improved performance.

Published
2020-10-30
Section
Articles