Modulation and Control Strategy of 3CH4 Combined Current Source Grid-Connected Inverter

Pengcheng Li, Liming Huo, Yingjun Guo, Guoqing An, Xiaoqiang Guo, Zheng Li and Hexu Sun
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Pengcheng Li: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China
Liming Huo: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China
Yingjun Guo: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China
Guoqing An: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China
Xiaoqiang Guo: Department of Electrical Engineering, Yanshan University, Qinhuangdao 066104, China
Zheng Li: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China
Hexu Sun: Department of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 051432, China

Energies, 2022, vol. 15, issue 12, 1-16

Abstract: In this article, a topology based on the single-phase full-bridge is proposed to decouple control of phase current in current source grid-connected inverters. The DC side of this current source inverter topology can operate with a common DC bus or independently, and the AC side can be independently integrated into the three-phase grid or operate in parallel. This topology needs only a simple control logic and phase information to achieve 3-phase current decoupling control, which can accommodate a wide range of voltage fluctuations. Then, dual-carrier driving and hybrid damping correction strategies are designed to achieve flexible combinatorial operation and eliminate the common-mode voltage. Meanwhile, the method is simple and easy to implement in practice. The effectiveness of the proposed algorithm is validated with experiments.

Keywords: current source inverters; dual-carrier modulation; hybrid damping; phase compensation (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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