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

The Korean Institute of Power Electronics (전력전자학회)
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Design of the Single-loop Voltage Controller for Arbitrary Waveform Generator

임의 파형 발생기를 위한 단일 루프 전압 제어기 설계

  • Kim, Hyeon-Sik (Dept. of Electrical and Computer Eng., Seoul National Univ.) ;
  • Chee, Seung-Jun (Dept. of Electrical and Computer Eng., Seoul National Univ.) ;
  • Sul, Seung-Ki (Dept. of Electrical and Computer Eng., Seoul National University)
  • Received : 2015.09.22
  • Accepted : 2015.12.30
  • Published : 2016.02.20
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Abstract

This study presents a design method for a single-loop voltage controller that is suitable for an arbitrary waveform generator (AWG). The voltage control algorithm of AWG should ensure high dynamic performance and should attain sufficient robustness to disturbances such as inverter nonlinearity, sensor noise, and load current. By analyzing the power circuit of AWG, control limitation and control target are presented to improve the dynamic performance of AWG. The proposed voltage control algorithm is composed of a single-loop output voltage control, an inverter current feedback term to improve transient response, and a load current feedforward term to prevent voltage distortion. The guideline for setting control gain is presented based on output filter parameters and digital time delay. The performance of the proposed algorithm is proven by experimental results through comparison with the conventional algorithm.

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References

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