Abstract
One of the major problems in multilevel voltage source inverter is the voltage total harmonic distortion (THDV). The number of output voltage level and switching angles are the most important for regarding performance indices. The H-bridge connection inverter with separated DC-link including DC-link voltages are identical is called cascade multilevel inverter. However, it is possible to have different values among the DC-link voltage of HBs, and it could be termed hybrid multilevel inverter (HMI), and thus increased number of output levels. Because of many number output levels of HMI, it had numerous unknown variables and it could eliminate several harmonics in addition. This paper present Particle Swarm Optimization (PSO) technique for solve switching angles and minimum THDV of three different H-bridge multilevel inverters including cascade multilevel inverter (CMI), binary hybrid multilevel inverter (BHMI) and ternary hybrid multilevel inverter (THMI) for THDV and number of switching devices comparison. The simulation results are illustrated in depth. Both advantages high level of inverter and Particle Swarm Optimization (PSO) applied as powerful tools for harmonic elimination
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