Large scale PM generators are subject to very large radial attraction forces between the rotor and stator. Combined with unequal deformation of the airgap clearance, this can lead to serious challenges for the generator structure. To equalise the radial forces in different parts of the machine, stator modules with variable flux-weakening and flux-strengthening are used in this paper. A case study of a permanent magnet generator for a direct-drive wind turbine is analysed magneto-statically. The results show that by shifting the current angle in the modules, the imbalance in radial forces (1.1×10 5 N) can be equalized. Simplified analytical modelling is shown – by 2D finite element analysis – to over-predict the radial forces, so the required variation in current angle shift will be less than predicted analytical (i.e. +15.8 ° in one module and -12.2 ° in another). This motivates the development of the analytical model to include slotting, saturation and higher spatial airgap flux density harmonics.
{"title":"Equalizing the radial attraction forces in direct-drive PM generators","authors":"Y. Zhang, A. McDonald","doi":"10.1049/icp.2022.1073","DOIUrl":"https://doi.org/10.1049/icp.2022.1073","url":null,"abstract":"Large scale PM generators are subject to very large radial attraction forces between the rotor and stator. Combined with unequal deformation of the airgap clearance, this can lead to serious challenges for the generator structure. To equalise the radial forces in different parts of the machine, stator modules with variable flux-weakening and flux-strengthening are used in this paper. A case study of a permanent magnet generator for a direct-drive wind turbine is analysed magneto-statically. The results show that by shifting the current angle in the modules, the imbalance in radial forces (1.1×10 5 N) can be equalized. Simplified analytical modelling is shown – by 2D finite element analysis – to over-predict the radial forces, so the required variation in current angle shift will be less than predicted analytical (i.e. +15.8 ° in one module and -12.2 ° in another). This motivates the development of the analytical model to include slotting, saturation and higher spatial airgap flux density harmonics.","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116087683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magnet loss reduction: A new technique beyond segmentation and shielding","authors":"A. A. Lopez, D. Smith, B. Mecrow","doi":"10.1049/icp.2022.1045","DOIUrl":"https://doi.org/10.1049/icp.2022.1045","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125149128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Ibarra-Nuño, J. Rosas-Caro, J. Ramirez, J. Mayo-Maldonado, J. E. Valdez-Resendiz
{"title":"Different operation of the MSC converter to reduce the input current ripple","authors":"C. Ibarra-Nuño, J. Rosas-Caro, J. Ramirez, J. Mayo-Maldonado, J. E. Valdez-Resendiz","doi":"10.1049/icp.2022.1098","DOIUrl":"https://doi.org/10.1049/icp.2022.1098","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121643301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A kind of full-bridge buck type multi-input inverter with high-frequency Link","authors":"J. Wang, D. Chen","doi":"10.1049/icp.2022.1108","DOIUrl":"https://doi.org/10.1049/icp.2022.1108","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125039927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A bidirectional three-level interleaved DC-DC converter for an electric vehicle charging station operating in a wide range of battery currents and voltages","authors":"P. Putera, C. Klumpner, P. Wheeler","doi":"10.1049/icp.2022.1090","DOIUrl":"https://doi.org/10.1049/icp.2022.1090","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"381 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123322866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Implementation of an AC chopper in domestic appliances for dynamic frequency response","authors":"T. Chinyemba, D. Strickland","doi":"10.1049/icp.2022.1028","DOIUrl":"https://doi.org/10.1049/icp.2022.1028","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"30 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131521108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cyclic-mode modelling of class EF2 inverters featuring a piezoelectric resonator as the auxiliary network","authors":"Y. Wang, J. Davidson, M. Foster","doi":"10.1049/icp.2022.1120","DOIUrl":"https://doi.org/10.1049/icp.2022.1120","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115127979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A comparison of P5, Cuk and class E2 converters for WPT in EV battery charging","authors":"I. Okasili, A. Elkhateb, T. Littler","doi":"10.1049/icp.2022.1130","DOIUrl":"https://doi.org/10.1049/icp.2022.1130","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133800713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Computationally efficient virtual prototyping and 3D loss calculations for magnetic components","authors":"A. Hopkins, V. Blakaj, P. Evans, N. Simpson","doi":"10.1049/icp.2022.1077","DOIUrl":"https://doi.org/10.1049/icp.2022.1077","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133552766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A methodological approach to virtual prototype development using strip wound inductor subassemblies","authors":"D. North, N. Simpson, J. Hoole, P. Mellor","doi":"10.1049/icp.2022.1076","DOIUrl":"https://doi.org/10.1049/icp.2022.1076","url":null,"abstract":"","PeriodicalId":288253,"journal":{"name":"11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129449087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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