A symmetric carrier technique of CRPWM for voltage balance method of flying-capacitor multilevel inverter

  title={A symmetric carrier technique of CRPWM for voltage balance method of flying-capacitor multilevel inverter},
  author={Dae-Wook Kang and Byoung-Kuk Lee and Jae-Hyun Jeon and Tae Jin Kim and Dong-Seok Hyun},
  journal={IEEE Transactions on Industrial Electronics},
This paper presents a simple carrier symmetric method for the voltage balance of flying capacitors in flying-capacitor multilevel inverters. The carrier-redistribution pulsewidth-modulation (CRPWM) method was reported as a solution for the voltage balance but it has a drawback at the transition of voltage level. To achieve the voltage balance of flying capacitors, the utilization of each carrier must be balanced during a half-cycle of the switching period such as phase-shifted PWM. However, the… CONTINUE READING
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