{"title":"直接并网可再生能源同步发电机阻抗匹配","authors":"D. Ockhuis, M. Kamper, Andrew T. Loubser","doi":"10.1109/SAUPEC/RobMech/PRASA48453.2020.9041142","DOIUrl":null,"url":null,"abstract":"The connection of synchronous generators directly to renewable energy micro-grids has the advantage of increasing the short circuit strength of the micro-grid. If these generators can also be part of converting renewable energy, such as wind and hydro energy, to electrical power, then it is a further advantage. In this paper the impedance matching of such a directly grid-connected permanent magnet generator, with the grid subjected to power and grid voltage variability, is investigated. It is shown that the optimum reactance for best impedance matching is 0.5 per unit at an optimum induced back electromotive force (EMF) voltage of 1.05 per unit. Additionally, laboratory testing of a direct-grid connected permanent magnet synchronous generator is conducted and its performance evaluated for varying grid voltages and input power conditions.","PeriodicalId":215514,"journal":{"name":"2020 International SAUPEC/RobMech/PRASA Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Impedance Matching of Direct Grid-Connected Renewable Energy Synchronous Generators\",\"authors\":\"D. Ockhuis, M. Kamper, Andrew T. Loubser\",\"doi\":\"10.1109/SAUPEC/RobMech/PRASA48453.2020.9041142\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The connection of synchronous generators directly to renewable energy micro-grids has the advantage of increasing the short circuit strength of the micro-grid. If these generators can also be part of converting renewable energy, such as wind and hydro energy, to electrical power, then it is a further advantage. In this paper the impedance matching of such a directly grid-connected permanent magnet generator, with the grid subjected to power and grid voltage variability, is investigated. It is shown that the optimum reactance for best impedance matching is 0.5 per unit at an optimum induced back electromotive force (EMF) voltage of 1.05 per unit. Additionally, laboratory testing of a direct-grid connected permanent magnet synchronous generator is conducted and its performance evaluated for varying grid voltages and input power conditions.\",\"PeriodicalId\":215514,\"journal\":{\"name\":\"2020 International SAUPEC/RobMech/PRASA Conference\",\"volume\":\"26 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 International SAUPEC/RobMech/PRASA Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SAUPEC/RobMech/PRASA48453.2020.9041142\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 International SAUPEC/RobMech/PRASA Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SAUPEC/RobMech/PRASA48453.2020.9041142","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Impedance Matching of Direct Grid-Connected Renewable Energy Synchronous Generators
The connection of synchronous generators directly to renewable energy micro-grids has the advantage of increasing the short circuit strength of the micro-grid. If these generators can also be part of converting renewable energy, such as wind and hydro energy, to electrical power, then it is a further advantage. In this paper the impedance matching of such a directly grid-connected permanent magnet generator, with the grid subjected to power and grid voltage variability, is investigated. It is shown that the optimum reactance for best impedance matching is 0.5 per unit at an optimum induced back electromotive force (EMF) voltage of 1.05 per unit. Additionally, laboratory testing of a direct-grid connected permanent magnet synchronous generator is conducted and its performance evaluated for varying grid voltages and input power conditions.