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논문 기본 정보

자료유형
학술저널
저자정보
Joon Young Park (Ajou University) Jiook Sin (LS mecapion) Yeongsu Bak (Ajou University) Sung-Min Park (Hongik University) Kyo-Beum Lee (Ajou University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.3
발행연도
2018.5
수록면
1,212 - 1,222 (11page)

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초록· 키워드

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This paper presents a model predictive control (MPC) method to reduce the common-mode voltage (CMV) for inverters connected in parallel, which increase the capacity of energy storage systems (ESSs). The proposed method is based on subdivided voltage vectors, and the resulting algorithm can be applied to control the inverters. Furthermore, we use more voltage vectors than the conventional MPC algorithm; consequently, the quality of grid currents is improved. Several methods were proposed in order to reduce the CMV appearing during operation and its adverse effects. However, those methods have shown to increase the total harmonic distortion of the grid currents. Our method, however, aims to both avoid this drawback and effectively reduce the CMV. By employing phase difference in the carrier signals to control each inverter, we successfully reduced the CMV for inverters connected in parallel, thus outperforming similar methods. In fact, the validity of the proposed method was verified by simulations and experimental results.

목차

Abstract
1. Introduction
2. Topology and Control Method for Two-Level Inverters in Parallel
3. CMV in Two-Level Inverters
4. Proposed CMV Reduction Method
5. Simulation Results
6. Experimental Results
7. Conclusion
References

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