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논문 기본 정보

자료유형
학술저널
저자정보
Hui Ma (South China University of Technology) Yunxiang Xie (South China University of Technology) Biaoguang Sun (South China University of Technology) Lingjun Mo (South China University of Technology)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.15 No.1
발행연도
2015.1
수록면
190 - 201 (12page)

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초록· 키워드

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This paper uses the switching function approach to present a simple state model of the Vienna-type rectifier. The approach introduces the relationship between the DC-link neutral point voltage and the AC side phase currents. A novel direct power control (DPC) strategy, which is based on the sliding mode control (SMC) for Vienna I rectifiers, is developed using the proposed power model in the stationary α-β reference frames. The SMC-based DPC methodology directly regulates instantaneous active and reactive powers without transforming to a synchronous rotating coordinate reference frame or a tracking phase angle of grid voltage. Moreover, the required rectifier control voltages are directly calculated by utilizing the non-linear SMC scheme. Theoretically, active and reactive power flows are controlled without ripple or cross coupling. Furthermore, the fixed-switching frequency is obtained by employing the simplified space vector modulation (SVM). SVM solves the complicated designing problem of the AC harmonic filter. The simplified SVM is based on the simplification of the space vector diagram of a three-level converter into that of a two-level converter. The dwelling time calculation and switching sequence selection are easily implemented like those in the conventional two-level rectifier. Replacing the current control loops with power control loops simplifies the system design and enhances the transient performance. The simulation models in MATLAB/Simulink and the digital signal processor-controlled 1.5 kW Vienna-type rectifier are used to verify the fast responses and robustness of the proposed control scheme.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. OPERATING MODE OF THE VIENNA-TYPE RECTIFIER
Ⅲ. STANDARD DIRECT POWER CONTROL MODEL
Ⅳ. PROPOSED SMC?DPC STRATEGY
Ⅴ. NEUTRAL-POINT VOLTAGE BALANCE STRATEGY BASED ON SIMPLIFIED SVM
Ⅵ. SIMULATION AND EXPERIMENTAL RESULTS
Ⅶ. CONCLUSION
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