Capacitor Voltage Balancing in Flying Capacitor Multilevel Inverters Considering Load power factor by SHE Technique

摘要

Without measuring current and capacitor voltages, SHE based on Newton raphson algorithm is investigated in open loop control of flying capacitor multilevel inverter for determining the best switching angles for balancing capacitor voltages and eliminating certain harmonic orders considering power factor variation. Simulation results show that the proposed method does effectively eliminate specific low order harmonics and the output voltage is resulted in low total harmonic distortion with balanced flying capacitors.