The Journal of Engineering | |
Loss reduction analysis and control of AC-voltage-boosted FBSM MMC by injecting second harmonic circulating current | |
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[1] Global Energy Interconnection Research Institute, Beijing 102209, People's Republic of China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China; | |
关键词: HVDC power convertors; HVDC power transmission; power grids; power transmission faults; voltage-source convertors; power transmission control; PSCAD/EMTDC; second harmonic circulating current; modular multilevel converters; HVDC systems; converter loss; AC voltage-boosted FBSM-MMC; loss reduction method; handling short-circuit faults; power loss; loss reduction analysis; | |
DOI : 10.1049/joe.2018.8716 | |
来源: publisher | |
【 摘 要 】
Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling the second harmonic component in the circulating current. The relationship between converter loss and second harmonic circulating current (SHCC) is first derived for AC voltage-boosted FBSM-MMC. From the analysis, it can be seen that the converter loss can be reduced by injecting the optimal SHCC into the arm current. The topology comparison between traditional FBSM-MMC and AC voltage-boosted FBSM-MMC is carried out to show the benefit of this method. Simulation results using PSCAD/EMTDC confirm the feasibility and validity of the proposed loss reduction method for AC voltage-boosted FBSM-MMC.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910109836589ZK.pdf | 1464KB | download |