The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Control of the Z-Source Inverter using Average Model

평균 모델을 이용한 Z-소스 인버터의 제어

  • Lee, Kwang-Woon (Dept. of Electronic Engineering, Mokpo Nat'l Maritime Univ.)
  • Received : 2014.01.17
  • Accepted : 2014.03.20
  • Published : 2014.06.20
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Abstract

This paper presents a design strategy for the control of the Z-source inverter (ZSI). For the Z-network capacitor voltage control, the average current model is derived to describe the dynamics of the voltage control and the controller outputs the average current command for the capacitor. Z-network inductor current reference is derived from the average current model of the Z-network capacitor. The inner current control loop outputs the average voltage command for the Z-network inductor and the shoot-through duty ratio of the ZSI is calculated from the output using the average voltage model of the Z-network inductor. The gain values of the current and voltage controllers are directly obtained by the Z-network parameters and desired bandwidth of each controller without a gain tuning process.

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References

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