Flying capacitor multilevel inverters with novel PWM method

  • Chang-xin M
  • Li-ping S
  • Tai-xu W
 et al. 
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Abstract

Flying capacitor multilevel inverters are increasingly used in industry applications. In order to improve the harmonic performance of the output voltage under low modulation index region, the paper presents a novel PWM method for flying capacitor multilevel inverters based on the idea of controlling freedom degree. The novel PWM method can balance the flying capacitor voltage in a certain period. The validity of the novel PWM method is demonstratedby the experimental results. © 2009.

Author-supplied keywords

  • PWM
  • control freedom degree
  • flying capacitor
  • multilevel inverters

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Authors

  • Miao Chang-xin

  • Shi Li-ping

  • Wang Tai-xu

  • Cui Cheng-bao

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