Sliding-mode Control Buck Three-level Converter

Sliding-mode control has the advantages of robustness and good dynamics performance,so it is introduced into three-level(TL) converters in this paper.The design of sliding-mode control Buck TL converter,including sliding-mode control surface design,equivalent control,stability and existence proof,is given as an example.Experiments of sliding-mode control Buck TL converter and traditional PWM Buck TL converter were carried out in order to analyze and compare.Analysis results verify that dynamics performance and robustness are improved greatly in the sliding-mode control Buck TL converter compare with PWM Buck TL converter.