A Simple Power Balancing Algorithm to Improve the Source Utilization Factor for a Multilevel Inverter for Microgrid and Hybrid Electric Vehicle Applications
Abstract
With the promising growth of micro grids andHEVs, the final power quality delivered by an inverter and longevity of the input DC voltage sources has become a subject matter of concern. The conventional multilevel inverter topologies give AC voltages with higher Total Harmonic Distortion (THD) leading to a lower power quality. Also, the unequal usage of the input DC sources leads to a poor Power Source Utilization Factor (PSUF). This paper presents the 3 phase H-Bridge inverter topology with improved line to line power quality features. The proposition of improving Power Source Utilization Factor (PSUF) is achieved by incorporating a novel transposition technique. A comparative study is made to decide the wave shape and minimize the harmonics. The theoretical simulation results and the hardware results for the gate pulses are shown.