Level-shifted PWM for Cascaded Multilevel Inverters with Even Power Distribution

  title={Level-shifted PWM for Cascaded Multilevel Inverters with Even Power Distribution},
  author={Mauricio Angulo and Pablo Lezana and Samir Kouro and Jos{\'e} M. V{\'a}zquez Rodr{\'i}guez and Bin Wu},
  journal={2007 IEEE Power Electronics Specialists Conference},
Cascaded H-bridge multilevel inverters are commonly controlled using multicarrier Phase-Shifted PWM, since it allows an even power distribution among the converter power cells, which can lead to lower harmonic distortion in the input current if an adequate transformer is used. However it is known that other multicarrier methods, like Phase Disposition PWM (PD- PWM) have better output voltage quality with lower distortion. Nevertheless, when used with cascaded inverters, this method produces… CONTINUE READING

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