Effects of Manufacturing Imperfections on the Circulating Current in Ironless Brushless DC Motors
This paper deals with the effects of manufacturing imperfections on the circulating current characteristics of an ironless brushless dc (BLDC) motor through a two-dimensional finite-element method (2-D FEM). The circulating current caused by the manufacturing imperfections of the windings' spat...
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| Veröffentlicht in: | IEEE transactions on industrial electronics (1982) 2019-01, Vol.66 (1), p.338-348 |
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| creator | Yang, Liu Zhao, Jing Liu, Xiangdong Haddad, A. Liang, Jun Hu, Hengzai |
| description | This paper deals with the effects of manufacturing imperfections on the circulating current characteristics of an ironless brushless dc (BLDC) motor through a two-dimensional finite-element method (2-D FEM). The circulating current caused by the manufacturing imperfections of the windings' spatial location and the permanent magnets' magnetization is analyzed. It is found that the former has a larger impact on the circulating current, and the parallel magnetization is smaller than radial magnetization. Then, the effect of the circulating current generated from the impedance unbalance in the parallel branches on winding losses and disturbance torque is further studied. The results show that the circulating current leads to large winding losses and different torque characteristics. The torque ripple becomes small when the circulating current exists in all the phase windings and the outer radius of the parallel branches has the same spatial location. Finally, the ironless BLDC motor is manufactured and tested. The experimental results are in good agreement with the 2-D FEM. It gives a significant guideline to the manufacturing process of such ironless BLDC motors. |
| doi_str_mv | 10.1109/TIE.2018.2826474 |
| format | Article |
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The circulating current caused by the manufacturing imperfections of the windings' spatial location and the permanent magnets' magnetization is analyzed. It is found that the former has a larger impact on the circulating current, and the parallel magnetization is smaller than radial magnetization. Then, the effect of the circulating current generated from the impedance unbalance in the parallel branches on winding losses and disturbance torque is further studied. The results show that the circulating current leads to large winding losses and different torque characteristics. The torque ripple becomes small when the circulating current exists in all the phase windings and the outer radius of the parallel branches has the same spatial location. Finally, the ironless BLDC motor is manufactured and tested. The experimental results are in good agreement with the 2-D FEM. It gives a significant guideline to the manufacturing process of such ironless BLDC motors.</description><identifier>ISSN: 0278-0046</identifier><identifier>EISSN: 1557-9948</identifier><identifier>DOI: 10.1109/TIE.2018.2826474</identifier><identifier>CODEN: ITIED6</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Brushless motors ; Circulating current ; Coils (windings) ; D C motors ; Defects ; Finite element analysis ; Finite element method ; Inductance ; ironless brushless dc (BLDC) motor ; Magnetization ; Manufacturing ; manufacturing imperfection ; Permanent magnet motors ; Permanent magnets ; Product design ; Torque ; torque ripple ; Unbalance ; Winding ; Windings</subject><ispartof>IEEE transactions on industrial electronics (1982), 2019-01, Vol.66 (1), p.338-348</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-c53f51a93c0dcdf61416a5df2b99bee8ad564324f264ac20b99c571d469f4353</citedby><cites>FETCH-LOGICAL-c291t-c53f51a93c0dcdf61416a5df2b99bee8ad564324f264ac20b99c571d469f4353</cites><orcidid>0000-0001-8602-2371 ; 0000-0003-4131-0198 ; 0000-0003-4153-6146 ; 0000-0001-7511-449X ; 0000-0002-1475-2719</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/8336907$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/8336907$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Yang, Liu</creatorcontrib><creatorcontrib>Zhao, Jing</creatorcontrib><creatorcontrib>Liu, Xiangdong</creatorcontrib><creatorcontrib>Haddad, A.</creatorcontrib><creatorcontrib>Liang, Jun</creatorcontrib><creatorcontrib>Hu, Hengzai</creatorcontrib><title>Effects of Manufacturing Imperfections on the Circulating Current in Ironless Brushless DC Motors</title><title>IEEE transactions on industrial electronics (1982)</title><addtitle>TIE</addtitle><description>This paper deals with the effects of manufacturing imperfections on the circulating current characteristics of an ironless brushless dc (BLDC) motor through a two-dimensional finite-element method (2-D FEM). The circulating current caused by the manufacturing imperfections of the windings' spatial location and the permanent magnets' magnetization is analyzed. It is found that the former has a larger impact on the circulating current, and the parallel magnetization is smaller than radial magnetization. Then, the effect of the circulating current generated from the impedance unbalance in the parallel branches on winding losses and disturbance torque is further studied. The results show that the circulating current leads to large winding losses and different torque characteristics. The torque ripple becomes small when the circulating current exists in all the phase windings and the outer radius of the parallel branches has the same spatial location. Finally, the ironless BLDC motor is manufactured and tested. The experimental results are in good agreement with the 2-D FEM. It gives a significant guideline to the manufacturing process of such ironless BLDC motors.</description><subject>Brushless motors</subject><subject>Circulating current</subject><subject>Coils (windings)</subject><subject>D C motors</subject><subject>Defects</subject><subject>Finite element analysis</subject><subject>Finite element method</subject><subject>Inductance</subject><subject>ironless brushless dc (BLDC) motor</subject><subject>Magnetization</subject><subject>Manufacturing</subject><subject>manufacturing imperfection</subject><subject>Permanent magnet motors</subject><subject>Permanent magnets</subject><subject>Product design</subject><subject>Torque</subject><subject>torque ripple</subject><subject>Unbalance</subject><subject>Winding</subject><subject>Windings</subject><issn>0278-0046</issn><issn>1557-9948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kL1PwzAQxS0EEqWwI7FYYk7xd-IRQoBIrVi6W65j01StXWxn4L8noRXTne69d6f7AXCP0QJjJJ_WbbMgCFcLUhHBSnYBZpjzspCSVZdghkhZFQgxcQ1uUtohhBnHfAZ045w1OcHg4Er7wWmTh9j7L9gejjZOWh_8KHuYtxbWfTTDXufJUA8xWp9h72Ebg9_blOBLHNL2r3ut4SrkENMtuHJ6n-zduc7B-q1Z1x_F8vO9rZ-XhSES58Jw6jjWkhrUmc4JzLDQvHNkI-XG2kp3XDBKmBu_04agcWx4iTsmpGOU0zl4PK09xvA92JTVLgzRjxcVQVIKKgSaXOjkMjGkFK1Tx9gfdPxRGKmJoxo5qomjOnMcIw-nSG-t_bdXlAqJSvoLnMdvDw</recordid><startdate>201901</startdate><enddate>201901</enddate><creator>Yang, Liu</creator><creator>Zhao, Jing</creator><creator>Liu, Xiangdong</creator><creator>Haddad, A.</creator><creator>Liang, Jun</creator><creator>Hu, Hengzai</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>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-8602-2371</orcidid><orcidid>https://orcid.org/0000-0003-4131-0198</orcidid><orcidid>https://orcid.org/0000-0003-4153-6146</orcidid><orcidid>https://orcid.org/0000-0001-7511-449X</orcidid><orcidid>https://orcid.org/0000-0002-1475-2719</orcidid></search><sort><creationdate>201901</creationdate><title>Effects of Manufacturing Imperfections on the Circulating Current in Ironless Brushless DC Motors</title><author>Yang, Liu ; Zhao, Jing ; Liu, Xiangdong ; Haddad, A. ; Liang, Jun ; Hu, Hengzai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c291t-c53f51a93c0dcdf61416a5df2b99bee8ad564324f264ac20b99c571d469f4353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Brushless motors</topic><topic>Circulating current</topic><topic>Coils (windings)</topic><topic>D C motors</topic><topic>Defects</topic><topic>Finite element analysis</topic><topic>Finite element method</topic><topic>Inductance</topic><topic>ironless brushless dc (BLDC) motor</topic><topic>Magnetization</topic><topic>Manufacturing</topic><topic>manufacturing imperfection</topic><topic>Permanent magnet motors</topic><topic>Permanent magnets</topic><topic>Product design</topic><topic>Torque</topic><topic>torque ripple</topic><topic>Unbalance</topic><topic>Winding</topic><topic>Windings</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Liu</creatorcontrib><creatorcontrib>Zhao, Jing</creatorcontrib><creatorcontrib>Liu, Xiangdong</creatorcontrib><creatorcontrib>Haddad, A.</creatorcontrib><creatorcontrib>Liang, Jun</creatorcontrib><creatorcontrib>Hu, Hengzai</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>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on industrial electronics (1982)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Yang, Liu</au><au>Zhao, Jing</au><au>Liu, Xiangdong</au><au>Haddad, A.</au><au>Liang, Jun</au><au>Hu, Hengzai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of Manufacturing Imperfections on the Circulating Current in Ironless Brushless DC Motors</atitle><jtitle>IEEE transactions on industrial electronics (1982)</jtitle><stitle>TIE</stitle><date>2019-01</date><risdate>2019</risdate><volume>66</volume><issue>1</issue><spage>338</spage><epage>348</epage><pages>338-348</pages><issn>0278-0046</issn><eissn>1557-9948</eissn><coden>ITIED6</coden><abstract>This paper deals with the effects of manufacturing imperfections on the circulating current characteristics of an ironless brushless dc (BLDC) motor through a two-dimensional finite-element method (2-D FEM). The circulating current caused by the manufacturing imperfections of the windings' spatial location and the permanent magnets' magnetization is analyzed. It is found that the former has a larger impact on the circulating current, and the parallel magnetization is smaller than radial magnetization. Then, the effect of the circulating current generated from the impedance unbalance in the parallel branches on winding losses and disturbance torque is further studied. The results show that the circulating current leads to large winding losses and different torque characteristics. The torque ripple becomes small when the circulating current exists in all the phase windings and the outer radius of the parallel branches has the same spatial location. Finally, the ironless BLDC motor is manufactured and tested. The experimental results are in good agreement with the 2-D FEM. It gives a significant guideline to the manufacturing process of such ironless BLDC motors.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIE.2018.2826474</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-8602-2371</orcidid><orcidid>https://orcid.org/0000-0003-4131-0198</orcidid><orcidid>https://orcid.org/0000-0003-4153-6146</orcidid><orcidid>https://orcid.org/0000-0001-7511-449X</orcidid><orcidid>https://orcid.org/0000-0002-1475-2719</orcidid></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | Brushless motors Circulating current Coils (windings) D C motors Defects Finite element analysis Finite element method Inductance ironless brushless dc (BLDC) motor Magnetization Manufacturing manufacturing imperfection Permanent magnet motors Permanent magnets Product design Torque torque ripple Unbalance Winding Windings |
| title | Effects of Manufacturing Imperfections on the Circulating Current in Ironless Brushless DC Motors |
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