Space vector pulse width modulation strategy for an even level inverter

Abstract

The main aim of this paper is to develop a space vector based pulse width modulation (SVPWM) switching strategy for an even-level inverter. The concept of fractal theory is effectively utilized to define the switching vectors for this even-level inverter. No look up tables are used for implementing the scheme. The vectors needed to generate the reference space phasor are derived from the hexagonal coordinates using arithmetic expressions. The work is experimentally tested for a six-level inverter topology using open-end winding configuration of induction motor. Hardware results are presented to verify the design.