Cogging Torque Dynamic Reduction Based on Harmonic Torque Counteract
This article presents a method to reduce cogging torque in permanent magnet (PM) machines from dynamic control based on harmonic torque counteract (HTC). We find the possibility of dynamic cancellation of cogging torque and harmonic torque by studying their generation mechanism and period characteri...
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| Veröffentlicht in: | IEEE transactions on magnetics 2022-02, Vol.58 (2), p.1-5 |
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| container_title | IEEE transactions on magnetics |
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| creator | Gao, Jian Xiang, Zhiman Dai, Litao Huang, Shoudao Ni, Dacheng Yao, Chao |
| description | This article presents a method to reduce cogging torque in permanent magnet (PM) machines from dynamic control based on harmonic torque counteract (HTC). We find the possibility of dynamic cancellation of cogging torque and harmonic torque by studying their generation mechanism and period characteristics, and further study the current harmonic injection scheme for cogging torque reduction. Further, two case studies of an integer slot PM machine and a fractional slot PM machine based on finite element analysis well validate the proposed method. Among them, the cogging torque of a 6-slot/2-pole PM synchronous machine is weakened from 932.0 to 56.2 mN.m, with a weakening ratio of 94.0%, and the cogging torque of the other with 6-slot/4-pole is weakened from 1.23 N.m to 44.21 mN.m, with a weakening ratio of 96.4%. The theory of this article can be extended to PM machines with other different pole/slot combinations and topologies. |
| doi_str_mv | 10.1109/TMAG.2021.3093723 |
| format | Article |
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We find the possibility of dynamic cancellation of cogging torque and harmonic torque by studying their generation mechanism and period characteristics, and further study the current harmonic injection scheme for cogging torque reduction. Further, two case studies of an integer slot PM machine and a fractional slot PM machine based on finite element analysis well validate the proposed method. Among them, the cogging torque of a 6-slot/2-pole PM synchronous machine is weakened from 932.0 to 56.2 mN.m, with a weakening ratio of 94.0%, and the cogging torque of the other with 6-slot/4-pole is weakened from 1.23 N.m to 44.21 mN.m, with a weakening ratio of 96.4%. 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(IEEE) 2022</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-3c64cd6879268d76ec4909c379f3c509df8839453c3846bfa70762ecc735a7b63</citedby><cites>FETCH-LOGICAL-c293t-3c64cd6879268d76ec4909c379f3c509df8839453c3846bfa70762ecc735a7b63</cites><orcidid>0000-0002-8416-7515 ; 0000-0001-7766-986X ; 0000-0002-6923-9605</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9468663$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27923,27924,54757</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9468663$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Gao, Jian</creatorcontrib><creatorcontrib>Xiang, Zhiman</creatorcontrib><creatorcontrib>Dai, Litao</creatorcontrib><creatorcontrib>Huang, Shoudao</creatorcontrib><creatorcontrib>Ni, Dacheng</creatorcontrib><creatorcontrib>Yao, Chao</creatorcontrib><title>Cogging Torque Dynamic Reduction Based on Harmonic Torque Counteract</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>This article presents a method to reduce cogging torque in permanent magnet (PM) machines from dynamic control based on harmonic torque counteract (HTC). We find the possibility of dynamic cancellation of cogging torque and harmonic torque by studying their generation mechanism and period characteristics, and further study the current harmonic injection scheme for cogging torque reduction. Further, two case studies of an integer slot PM machine and a fractional slot PM machine based on finite element analysis well validate the proposed method. Among them, the cogging torque of a 6-slot/2-pole PM synchronous machine is weakened from 932.0 to 56.2 mN.m, with a weakening ratio of 94.0%, and the cogging torque of the other with 6-slot/4-pole is weakened from 1.23 N.m to 44.21 mN.m, with a weakening ratio of 96.4%. The theory of this article can be extended to PM machines with other different pole/slot combinations and topologies.</description><subject>Cogging</subject><subject>Cogging torque</subject><subject>Dynamic control</subject><subject>dynamic reduction method</subject><subject>Finite element method</subject><subject>Force</subject><subject>Forging</subject><subject>Harmonic analysis</subject><subject>harmonic torque counteract (HTC)</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>permanent magnet (PM) machines</subject><subject>Permanent magnets</subject><subject>Reduction</subject><subject>Rotors</subject><subject>Stators</subject><subject>Synchronous machines</subject><subject>Topology</subject><subject>Torque</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE9LAzEQxYMoWKsfQLwseN46yWTz51i3tRUqgtRzSLPZssVuanb30G9vSounmWHemzf8CHmkMKEU9Mv6Y7qYMGB0gqBRMrwiI6o5zQGEviYjAKpyzQW_JXddt0sjLyiMyKwM223TbrN1iL-Dz2bH1u4bl335anB9E9rs1Xa-ylKztHEf2rS7SMswtL2P1vX35Ka2P51_uNQx-X6br8tlvvpcvJfTVe6Yxj5HJ7irhJKaCVVJ4R3XoB1KXaMrQFe1Uqh5gQ4VF5vaSpCCeeckFlZuBI7J8_nuIYb0QdebXRhimyINE4wqoJCCxoSeVS6Grou-NofY7G08GgrmBMucYJkTLHOBlTxPZ0_jvf_XJ15KCMQ_lwJkBQ</recordid><startdate>20220201</startdate><enddate>20220201</enddate><creator>Gao, Jian</creator><creator>Xiang, Zhiman</creator><creator>Dai, Litao</creator><creator>Huang, Shoudao</creator><creator>Ni, Dacheng</creator><creator>Yao, Chao</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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We find the possibility of dynamic cancellation of cogging torque and harmonic torque by studying their generation mechanism and period characteristics, and further study the current harmonic injection scheme for cogging torque reduction. Further, two case studies of an integer slot PM machine and a fractional slot PM machine based on finite element analysis well validate the proposed method. Among them, the cogging torque of a 6-slot/2-pole PM synchronous machine is weakened from 932.0 to 56.2 mN.m, with a weakening ratio of 94.0%, and the cogging torque of the other with 6-slot/4-pole is weakened from 1.23 N.m to 44.21 mN.m, with a weakening ratio of 96.4%. 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| source | IEEE Electronic Library (IEL) |
| subjects | Cogging Cogging torque Dynamic control dynamic reduction method Finite element method Force Forging Harmonic analysis harmonic torque counteract (HTC) Magnetic fields Magnetism permanent magnet (PM) machines Permanent magnets Reduction Rotors Stators Synchronous machines Topology Torque |
| title | Cogging Torque Dynamic Reduction Based on Harmonic Torque Counteract |
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