Cost-Effective Vernier Permanent-Magnet Machine With High Torque Performance
This paper presents a cost-effective five-phase vernier permanent-magnet (VPM) machine with fault tolerance for direct-drive applications, which has hybrid magnet material in both stator and rotor. By adopting unipolar rare-earth PM in rotor, the amount of rare-earth PM is reduced by half and the fl...
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| Veröffentlicht in: | IEEE transactions on magnetics 2017-11, Vol.53 (11), p.1-4 |
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| container_title | IEEE transactions on magnetics |
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| creator | Xu, Gaohong Liu, Guohai Chen, Ming Du, Xinxin Xu, Meimei |
| description | This paper presents a cost-effective five-phase vernier permanent-magnet (VPM) machine with fault tolerance for direct-drive applications, which has hybrid magnet material in both stator and rotor. By adopting unipolar rare-earth PM in rotor, the amount of rare-earth PM is reduced by half and the flux leakage between PMs is much reduced. Besides, the unipolar ferrite PM is assisted between flux-modulation poles to further improve the flux in stator teeth. Moreover, the torque performance and PM utilization rate are further improved due to the optimization of stator teeth in the proposed machine. The time-stepping finite-element method is used to evaluate the performance of proposed VPM machine in comparison with bipolar and unipolar ones. The results show that the proposed VPM machine not only remains the advantage of fault tolerance, but also significantly improves the torque density and reduces torque ripple simultaneously with considerable less consumption of rare-earth PM. |
| doi_str_mv | 10.1109/TMAG.2017.2698077 |
| format | Article |
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By adopting unipolar rare-earth PM in rotor, the amount of rare-earth PM is reduced by half and the flux leakage between PMs is much reduced. Besides, the unipolar ferrite PM is assisted between flux-modulation poles to further improve the flux in stator teeth. Moreover, the torque performance and PM utilization rate are further improved due to the optimization of stator teeth in the proposed machine. The time-stepping finite-element method is used to evaluate the performance of proposed VPM machine in comparison with bipolar and unipolar ones. The results show that the proposed VPM machine not only remains the advantage of fault tolerance, but also significantly improves the torque density and reduces torque ripple simultaneously with considerable less consumption of rare-earth PM.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2017.2698077</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Air gaps ; Cost reduction ; Fault tolerance ; Ferrites ; Finite element method ; Flux ; Forging ; hybrid PM material ; Magnetism ; Performance evaluation ; Permanent magnets ; Rare earth elements ; Rotors ; Stator windings ; Teeth ; Time stepping finite elements ; Torque ; torque density ; torque ripple ; vernier permanent-magnet (VPM) machine</subject><ispartof>IEEE transactions on magnetics, 2017-11, Vol.53 (11), p.1-4</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2017</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-6bcff0a4310ae17b711b3c882f92184d2c4d7b4b55cae273cea9cdc1cb7a394d3</citedby><cites>FETCH-LOGICAL-c293t-6bcff0a4310ae17b711b3c882f92184d2c4d7b4b55cae273cea9cdc1cb7a394d3</cites><orcidid>0000-0002-0365-0020</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7912389$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7912389$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Xu, Gaohong</creatorcontrib><creatorcontrib>Liu, Guohai</creatorcontrib><creatorcontrib>Chen, Ming</creatorcontrib><creatorcontrib>Du, Xinxin</creatorcontrib><creatorcontrib>Xu, Meimei</creatorcontrib><title>Cost-Effective Vernier Permanent-Magnet Machine With High Torque Performance</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>This paper presents a cost-effective five-phase vernier permanent-magnet (VPM) machine with fault tolerance for direct-drive applications, which has hybrid magnet material in both stator and rotor. By adopting unipolar rare-earth PM in rotor, the amount of rare-earth PM is reduced by half and the flux leakage between PMs is much reduced. Besides, the unipolar ferrite PM is assisted between flux-modulation poles to further improve the flux in stator teeth. Moreover, the torque performance and PM utilization rate are further improved due to the optimization of stator teeth in the proposed machine. The time-stepping finite-element method is used to evaluate the performance of proposed VPM machine in comparison with bipolar and unipolar ones. The results show that the proposed VPM machine not only remains the advantage of fault tolerance, but also significantly improves the torque density and reduces torque ripple simultaneously with considerable less consumption of rare-earth PM.</description><subject>Air gaps</subject><subject>Cost reduction</subject><subject>Fault tolerance</subject><subject>Ferrites</subject><subject>Finite element method</subject><subject>Flux</subject><subject>Forging</subject><subject>hybrid PM material</subject><subject>Magnetism</subject><subject>Performance evaluation</subject><subject>Permanent magnets</subject><subject>Rare earth elements</subject><subject>Rotors</subject><subject>Stator windings</subject><subject>Teeth</subject><subject>Time stepping finite elements</subject><subject>Torque</subject><subject>torque density</subject><subject>torque ripple</subject><subject>vernier permanent-magnet (VPM) machine</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kNFKwzAUhoMoOKcPIN4UvO7MSdImuRxjbsKKXky9DGl6smW4dqad4NvbsuHV4cD3_-fwEXIPdAJA9dO6mC4mjIKcsFwrKuUFGYEWkFKa60syohRUqkUurslN2-76VWRAR2Q1a9ounXuPrgs_mHxgrAPG5A3j3tZYd2lhNzV2SWHdNtSYfIZumyzDZpusm_h9xIH0zQA7vCVX3n61eHeeY_L-PF_PlunqdfEym65SxzTv0rx03lMrOFCLIEsJUHKnFPOagRIVc6KSpSizzFlkkju02lUOXCkt16LiY_J46j3Epn-h7cyuOca6P2lAZ7lgKstkT8GJcrFp24jeHGLY2_hrgJpBmhmkmUGaOUvrMw-nTEDEf15qYFxp_gdCO2h7</recordid><startdate>20171101</startdate><enddate>20171101</enddate><creator>Xu, Gaohong</creator><creator>Liu, Guohai</creator><creator>Chen, Ming</creator><creator>Du, Xinxin</creator><creator>Xu, Meimei</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-0365-0020</orcidid></search><sort><creationdate>20171101</creationdate><title>Cost-Effective Vernier Permanent-Magnet Machine With High Torque Performance</title><author>Xu, Gaohong ; Liu, Guohai ; Chen, Ming ; Du, Xinxin ; Xu, Meimei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-6bcff0a4310ae17b711b3c882f92184d2c4d7b4b55cae273cea9cdc1cb7a394d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Air gaps</topic><topic>Cost reduction</topic><topic>Fault tolerance</topic><topic>Ferrites</topic><topic>Finite element method</topic><topic>Flux</topic><topic>Forging</topic><topic>hybrid PM material</topic><topic>Magnetism</topic><topic>Performance evaluation</topic><topic>Permanent magnets</topic><topic>Rare earth elements</topic><topic>Rotors</topic><topic>Stator windings</topic><topic>Teeth</topic><topic>Time stepping finite elements</topic><topic>Torque</topic><topic>torque density</topic><topic>torque ripple</topic><topic>vernier permanent-magnet (VPM) machine</topic><toplevel>online_resources</toplevel><creatorcontrib>Xu, Gaohong</creatorcontrib><creatorcontrib>Liu, Guohai</creatorcontrib><creatorcontrib>Chen, Ming</creatorcontrib><creatorcontrib>Du, Xinxin</creatorcontrib><creatorcontrib>Xu, Meimei</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Xu, Gaohong</au><au>Liu, Guohai</au><au>Chen, Ming</au><au>Du, Xinxin</au><au>Xu, Meimei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cost-Effective Vernier Permanent-Magnet Machine With High Torque Performance</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>2017-11-01</date><risdate>2017</risdate><volume>53</volume><issue>11</issue><spage>1</spage><epage>4</epage><pages>1-4</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>This paper presents a cost-effective five-phase vernier permanent-magnet (VPM) machine with fault tolerance for direct-drive applications, which has hybrid magnet material in both stator and rotor. By adopting unipolar rare-earth PM in rotor, the amount of rare-earth PM is reduced by half and the flux leakage between PMs is much reduced. Besides, the unipolar ferrite PM is assisted between flux-modulation poles to further improve the flux in stator teeth. Moreover, the torque performance and PM utilization rate are further improved due to the optimization of stator teeth in the proposed machine. The time-stepping finite-element method is used to evaluate the performance of proposed VPM machine in comparison with bipolar and unipolar ones. The results show that the proposed VPM machine not only remains the advantage of fault tolerance, but also significantly improves the torque density and reduces torque ripple simultaneously with considerable less consumption of rare-earth PM.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMAG.2017.2698077</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0002-0365-0020</orcidid></addata></record> |
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| ispartof | IEEE transactions on magnetics, 2017-11, Vol.53 (11), p.1-4 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Air gaps Cost reduction Fault tolerance Ferrites Finite element method Flux Forging hybrid PM material Magnetism Performance evaluation Permanent magnets Rare earth elements Rotors Stator windings Teeth Time stepping finite elements Torque torque density torque ripple vernier permanent-magnet (VPM) machine |
| title | Cost-Effective Vernier Permanent-Magnet Machine With High Torque Performance |
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