{"id":284112,"date":"2023-05-16T04:35:58","date_gmt":"2023-05-16T04:35:58","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=284112"},"modified":"2023-05-16T04:35:58","modified_gmt":"2023-05-16T04:35:58","slug":"cogging-torque-fft-results-and-theoretical-content-are-different","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cogging-torque-fft-results-and-theoretical-content-are-different\/","title":{"rendered":"Cogging torque FFT results and theoretical content are different."},"content":{"rendered":"<p>Hello,<\/p>\n<p>I have a question about MOTORCAD.<\/p>\n<p>The model is 8 poles and 12 slots, and the cogging torque cycle is 24 cycles, which is the least common multiple of 8 and 12. (360 Mdeg)<\/p>\n<p>If the waveform is analyzed by FFT, it is predicted that the proportion of the 24th order component will be large.<\/p>\n<p>I confirmed that the prediction was correct using Maxwell&#8217;s program.<\/p>\n<p><strong>However, as shown in the attached picture, the result of Motor CAD is different.<\/strong><br \/>(An unidentified 23rd order appears.)<\/p>\n<p>This confuses me quite a bit.<\/p>\n<p>Please help me.<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/05\/16-05-2023-1684205149-mceclip0.png\"><\/p>\n","protected":false},"template":"","class_list":["post-284112","topic","type-topic","status-closed","hentry","topic-tag-motorcad-edt"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.39.172.6"],"_bbp_subscription":["73450","186775"],"_btv_view_count":["1070"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["284112"],"_bbp_forum_id":["27793"],"_bbp_engagement":["73450","186775"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["284790"],"_bbp_last_active_id":["284790"],"_bbp_last_active_time":["2023-05-18 23:17:53"]},"test":"bcchul1dwdcc-co-kr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/284112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/284112\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=284112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}