Elimination of Chattering by Control Strategy Based on the Multiphase Sliding Model Control for Efficient Power Conversion in a DC-DC Circuit

Woonki Na, Pengyuan Chen and Jonghoon Kim
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Woonki Na: Electrical and Computer Engineering, California State University, Fresno 93740, CA, USA
Pengyuan Chen: Electrical and Computer Engineering, California State University, Fresno 93740, CA, USA
Jonghoon Kim: Electrical Engineering, Chungnam National University, Daejeon 34134, Korea

Energies, 2017, vol. 10, issue 9, 1-14

Abstract: In this paper, a multiphase sliding mode (MPSM) control method with a master–slave structure is proposed and analyzed in order to suppress ripples at input terminals or output terminals in DC/DC converter applications. With the proposed MPSM, the switching frequency of a multiphase DC/DC converter does not need to be operating such a high switching frequency as adopted in a conventional sliding mode control-based DC/DC converter. As a result, switching power losses could be reduced in this converter. Another advantage of this proposed method is that the master–slave multiphase slide control loop could figure out a proper phase shift between each switching phase of a DC/DC converter instead of precalculated phase shift. The proposed concepts are proven by the PSIM computer simulations and the feasibility of the proposed concepts is validated through the test experiments.

Keywords: sliding mode control; master–slave structure; multiphase converter; DSP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
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