L. Tutelea, I. Torac, A. Isfanuti, A. Popa, I. Boldea
{"title":"10MW, 10rpm, 30Hz spoke Ferrite and bonded NdFeB-rotor wind PMSG preliminary design with FEM validations for 6 rotor variants","authors":"L. Tutelea, I. Torac, A. Isfanuti, A. Popa, I. Boldea","doi":"10.1109/OPTIM-ACEMP50812.2021.9590049","DOIUrl":null,"url":null,"abstract":"In an effort to increase the efficiency close to 0.97 for a power factor above 0.7, at maximum 70 tons (250,000USD) active weight (and cost) for 10 MW, 10rpm wind generator, a Ferrite spoke-PM and bonded NdFeB respectively, multi pole rotor, 3 phase radial air gap synchronous generator was designed here, with key FEM validation checks regarding the flux density distribution and torque waveform and Ldm, Lqm inductances for pure Iq field-oriented control (FOC). The rotor was provided with flux barriers in axis q, to further reduce q axis inductance and thus increase power factor. Two variants of rotor core geometry have been considered: one with a single lamination (without and with additional radial magnets) and one with detachable poles with flux barriers; in all, 6 rotor variants. It has been also proved that the generator can survive approx. 2.00 p.u. load without serious PM demagnetization.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":"8 1","pages":"14-21"},"PeriodicalIF":0.0000,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioma","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590049","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In an effort to increase the efficiency close to 0.97 for a power factor above 0.7, at maximum 70 tons (250,000USD) active weight (and cost) for 10 MW, 10rpm wind generator, a Ferrite spoke-PM and bonded NdFeB respectively, multi pole rotor, 3 phase radial air gap synchronous generator was designed here, with key FEM validation checks regarding the flux density distribution and torque waveform and Ldm, Lqm inductances for pure Iq field-oriented control (FOC). The rotor was provided with flux barriers in axis q, to further reduce q axis inductance and thus increase power factor. Two variants of rotor core geometry have been considered: one with a single lamination (without and with additional radial magnets) and one with detachable poles with flux barriers; in all, 6 rotor variants. It has been also proved that the generator can survive approx. 2.00 p.u. load without serious PM demagnetization.