Hong Xu, Xuming Wang, Liqiu Huang, Jiahao Qian, Jianyong Lou
{"title":"MPPT两级三相光伏并网系统研究","authors":"Hong Xu, Xuming Wang, Liqiu Huang, Jiahao Qian, Jianyong Lou","doi":"10.1109/ICPRE48497.2019.9034825","DOIUrl":null,"url":null,"abstract":"This paper is about three-phase photovoltaic gridconnected system with MPPT, including pre-stage DC-DC and post-stage DC-AC. The pre-stage circuit selects the Boost circuit to achieve maximum power point tracking(MPPT). In order to better track the maximum power point of the PV array, a new MPPT technology is proposed, that is, the conductivity increase method + PI adjustment. The latter stage DC-AC adopts a three-phase full-bridge inverter circuit. The control method is to use a voltage-oriented vector control, converting the output currents ia, ib, and ic into id, iq through $abc/\\alpha \\beta/dq$ coordinate transformation. Then a 40kW photovoltaic grid-connected model was built in MATLAB. The results show that the method can accurately achieve the MPPT, and the grid-connected inverter can realize the function of stable DC voltage and unit power factor grid-connected.","PeriodicalId":387293,"journal":{"name":"2019 4th International Conference on Power and Renewable Energy (ICPRE)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Research on Two-Stage Three-Phase Photovoltaic Grid-Connected System with MPPT\",\"authors\":\"Hong Xu, Xuming Wang, Liqiu Huang, Jiahao Qian, Jianyong Lou\",\"doi\":\"10.1109/ICPRE48497.2019.9034825\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper is about three-phase photovoltaic gridconnected system with MPPT, including pre-stage DC-DC and post-stage DC-AC. The pre-stage circuit selects the Boost circuit to achieve maximum power point tracking(MPPT). In order to better track the maximum power point of the PV array, a new MPPT technology is proposed, that is, the conductivity increase method + PI adjustment. The latter stage DC-AC adopts a three-phase full-bridge inverter circuit. The control method is to use a voltage-oriented vector control, converting the output currents ia, ib, and ic into id, iq through $abc/\\\\alpha \\\\beta/dq$ coordinate transformation. Then a 40kW photovoltaic grid-connected model was built in MATLAB. The results show that the method can accurately achieve the MPPT, and the grid-connected inverter can realize the function of stable DC voltage and unit power factor grid-connected.\",\"PeriodicalId\":387293,\"journal\":{\"name\":\"2019 4th International Conference on Power and Renewable Energy (ICPRE)\",\"volume\":\"75 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 4th International Conference on Power and Renewable Energy (ICPRE)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICPRE48497.2019.9034825\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 4th International Conference on Power and Renewable Energy (ICPRE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPRE48497.2019.9034825","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Research on Two-Stage Three-Phase Photovoltaic Grid-Connected System with MPPT
This paper is about three-phase photovoltaic gridconnected system with MPPT, including pre-stage DC-DC and post-stage DC-AC. The pre-stage circuit selects the Boost circuit to achieve maximum power point tracking(MPPT). In order to better track the maximum power point of the PV array, a new MPPT technology is proposed, that is, the conductivity increase method + PI adjustment. The latter stage DC-AC adopts a three-phase full-bridge inverter circuit. The control method is to use a voltage-oriented vector control, converting the output currents ia, ib, and ic into id, iq through $abc/\alpha \beta/dq$ coordinate transformation. Then a 40kW photovoltaic grid-connected model was built in MATLAB. The results show that the method can accurately achieve the MPPT, and the grid-connected inverter can realize the function of stable DC voltage and unit power factor grid-connected.
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