Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Carrier Based Single-State PWM Technique for Minimizing Vector Errors in Multilevel Inverters

  • Nho, Nguyen Van (Dept. of Electrical and Electronics Eng., HCM University of Technology) ;
  • Hai, Quach Thanh (Dept. of Electrical and Electronics Eng., HCM University of Technology) ;
  • Lee, Hong-Hee (School of Electrical Eng., University of Ulsan)
  • Received : 2009.08.03
  • Published : 2010.07.20
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Abstract

In this paper, a novel analysis of a carrier based PWM method for multilevel inverters is presented. The space vector PWM and carrier based PWM correlations in multilevel inverters are investigated in a nominal two-level switching diagram. The obtained results can be applied to design various carrier PWM techniques. In this paper, a carrier based single-state PWM technique, which reduces the switching number and optimizes the active voltage errors, is presented. This PWM technique can be advantageous if there are a large number of levels. The proposed method is mathematically formulated and demonstrated by simulations and experimental results.

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References

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