摘要详情
122 / 2024-07-31 20:50:07
Voltage Imbalance Compensation for Unbalanced Local Load Under Weak Grid Though Three-Phase Four-Leg Inverter
battery management,three-phase four-leg voltage source inverter,unbalanced grid compensation,weak grid,power condition system
终稿
Under weak grid, three-phase unbalanced local load will lead to serious voltage imbalance at the point of common coupling (PCC). This will result in the fault or damage of local load. Three-phase four-leg inverter can provide a zero-sequence current path for unbalanced load, thus can compensate for load imbalance. In this paper, three-phase four-leg inverter is used in the power condition system working under weak grid, which is controlled to balance the PCC voltage caused by unbalanced local loads and simultaneously to lower the battery discharge. Firstly, through the separate control of the positive and negative sequence components of PCC voltage, balanced PCC voltage is achieved under unbalanced load. Furthermore, zero sequence current is controlled to not flow through the grid neutral line. Secondly, a droop control method is proposed to eliminate positive sequence active power outputting from the inverter, which can lower the discharge of the battery. Finally, simulation results verified the correctness and effectiveness of the proposed control strategy.
重要日期
-
会议日期
11月06日
2024
至11月08日
2024
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09月15日 2024
初稿截稿日期
-
11月08日 2024
注册截止日期
主办单位
Huazhong University of Science and Technology
联系方式
- JieLu
- lu******@chytey.com
- +86********
历届会议
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2023年12月08日 中国 Chengdu
4th China International Youth Conference on Electrical Engineering -
2023年07月11日 中国 Chengdu
2nd China International Youth Conference on Electrical Engineering -
2022年11月03日 中国 Wuhan
2022 IEEE 3rd China International Youth Conference on Electrical Engineering -
2020年11月02日 中国 Wuhan
China International Youth Conference on Electrical Engineering
