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Input-Constrained Current Controller for DC/DC Boost Converter

  • Choi, Woo Jin (Department of Electrical and Computer Engineering, Ajou University) ;
  • Kim, Seok-Kyoon (Vehicle Component Technology Center, LG Electronics) ;
  • Kim, Juyong (Smart Power Distribution Lab, Korea Electric Power) ;
  • Lee, Kyo-Beum (Department of Electrical and Computer Engineering, Ajou University)
  • Received : 2015.11.14
  • Accepted : 2016.07.03
  • Published : 2016.11.20

Abstract

This paper presents a simple input-constrained current controller for a DC/DC boost converter with stability analysis that considers the nonlinearity of the converter model. The proposed controller is designed to satisfy the inherent input constraints of the converter under a physically reasonable assumption, which is the first contribution of this paper. The second contribution is providing a rigorous proof of the proposed control law, which keeps the closed-loop system along with the internal dynamics stable. The performance of the proposed controller is demonstrated through an experiment employing a 20-kW DC/DC boost converter.

Acknowledgement

Grant : Demonstration Study for Low Voltage Direct Current Distribution Network in an Island

Supported by : KEPCO

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