A simplified space vector pulse width modulation for three phase three-level diode clamped inverter

For diode clamped multilevel inverter topology dc link capacitor balancing is a vital issue. Proper switching sequence in space vector pulse width modulation plays a pivotal role in this regard without introducing any extra controller. This paper proposes SVPWM algorithm with seven segment switching sequence for three level inverter against the switching sequences where all the switching states along with their redundant states were used and detail comparison between those two sequence of SVPWM are discussed. Finaly, the operation of proposed algorithm is verified through MATLAB/SIMULINK environment.