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논문 기본 정보

자료유형
학술저널
저자정보
Jilong Liu (Xi"an Jiaotong University) Fei Xiao (Naval University of Engineering) Weiming Ma (Naval University of Engineering) Xuexin Fan (Naval University of Engineering) Wei Chen (Naval University of Engineering)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.15 No.2
발행연도
2015.3
수록면
378 - 388 (11page)

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초록· 키워드

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This paper proposes a pulse width modulation (PWM)-based sliding mode controller (SMC) for a full-bridge DC-DC converter that can eliminate static output voltage error. Hysteretic SMC in DC-DC converter does not have a fixed switching frequency, and applying hysteretic SMC to full-bridge converters is difficult. Fixed-frequency SMC, which is also called PWM-based SMC, based on equivalent control overcomes these shortcomings. However, the controller order reduction in equivalent control in PWM-based SMC causes static output voltage error. To resolve this issue, an integral item is added to the PWM-based SMC. Sliding mode coefficients are designed by applying a standard second-order system to the sliding mode surface. The effect of adding an integral item on the controller is analyzed, and an integral coefficient design method is proposed. Experiment results on a three-level full-bridge DC-DC converter verify the control scheme and design method proposed in this paper.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. THREE-LEVEL FULL-BRIDGE CONVERTER AND ITS PHASE-SHIFT CONTROL SCHEME
Ⅲ. PWM-BASED SMC
Ⅳ. PWM-BASED SMC WITH ADDITIONAL INTEGRAL
Ⅴ. DESIGN OF SLIDING COEFFICIENTS AND INTEGRAL COEFFICIENT
Ⅵ. EXPERIMENTAL RESULTS
Ⅶ. CONCLUSION
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