{"title":"海上风电场集成中基于MMC和二极管整流器的混合直流变流器","authors":"Yue Wu, Lei Zhang, Yuebin Zhou, Zongqiu Hu, Xiaobin Zhao, Qinghan Zhuang","doi":"10.1109/POWERCON53785.2021.9697478","DOIUrl":null,"url":null,"abstract":"Aiming at the occasion of DC transmission of offshore wind power, a new type of hybrid converter topology is proposed in which a diode rectifier is connected in parallel with the AC side of the MMC converter and the DC side is connected in series. MMC converter provides a stable voltage source for offshore wind farms and serves as power of black start. The DC side of the diode rectifier has a bypass circuit breaker and a thyristor as the starting circuit. Due to the application of diode rectifier with higher integration and MMC converter with lower DC operating voltage in this topology, this HVDC transmission system has a higher power density and lower cost, and has some certain utilities. This paper analyzes the principle of the hybrid converter, the power distribution ratio, and the start-up and steady-state control methods. Finally, the PSCAD/EMTDC simulations for the HVDC transmission system are conducted to validate the proposed hybrid converter and control strategy.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"A hybrid HVDC converter based on MMC and diode rectifier for offshore wind farm integration\",\"authors\":\"Yue Wu, Lei Zhang, Yuebin Zhou, Zongqiu Hu, Xiaobin Zhao, Qinghan Zhuang\",\"doi\":\"10.1109/POWERCON53785.2021.9697478\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Aiming at the occasion of DC transmission of offshore wind power, a new type of hybrid converter topology is proposed in which a diode rectifier is connected in parallel with the AC side of the MMC converter and the DC side is connected in series. MMC converter provides a stable voltage source for offshore wind farms and serves as power of black start. The DC side of the diode rectifier has a bypass circuit breaker and a thyristor as the starting circuit. Due to the application of diode rectifier with higher integration and MMC converter with lower DC operating voltage in this topology, this HVDC transmission system has a higher power density and lower cost, and has some certain utilities. This paper analyzes the principle of the hybrid converter, the power distribution ratio, and the start-up and steady-state control methods. Finally, the PSCAD/EMTDC simulations for the HVDC transmission system are conducted to validate the proposed hybrid converter and control strategy.\",\"PeriodicalId\":216155,\"journal\":{\"name\":\"2021 International Conference on Power System Technology (POWERCON)\",\"volume\":\"80 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 International Conference on Power System Technology (POWERCON)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/POWERCON53785.2021.9697478\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 International Conference on Power System Technology (POWERCON)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/POWERCON53785.2021.9697478","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A hybrid HVDC converter based on MMC and diode rectifier for offshore wind farm integration
Aiming at the occasion of DC transmission of offshore wind power, a new type of hybrid converter topology is proposed in which a diode rectifier is connected in parallel with the AC side of the MMC converter and the DC side is connected in series. MMC converter provides a stable voltage source for offshore wind farms and serves as power of black start. The DC side of the diode rectifier has a bypass circuit breaker and a thyristor as the starting circuit. Due to the application of diode rectifier with higher integration and MMC converter with lower DC operating voltage in this topology, this HVDC transmission system has a higher power density and lower cost, and has some certain utilities. This paper analyzes the principle of the hybrid converter, the power distribution ratio, and the start-up and steady-state control methods. Finally, the PSCAD/EMTDC simulations for the HVDC transmission system are conducted to validate the proposed hybrid converter and control strategy.
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