{"id":391091,"date":"2024-10-23T17:02:53","date_gmt":"2024-10-23T17:02:53","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/dq-graph-non-conformity\/"},"modified":"2024-10-23T17:02:53","modified_gmt":"2024-10-23T17:02:53","slug":"dq-graph-non-conformity","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/dq-graph-non-conformity\/","title":{"rendered":"dq graph non-conformity"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I have modeled a 14 pole rotor rotating at 500 mechanical RPM in the condition of no excitation in the windings. Then created the following output variables to change the coordinate system from 3 phase to alpha_beta for the stationary and dq for rotating. Expecting to see constant values in dq frame.&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/23-10-2024-1729702744-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;the FLD_srf is flux linkage in alpha and FLQ_srf is the flux linkage in beta coordinates and the fld and flq in rrf are in dq coordinates. the number 7 is multiplied to mechanical angle to give back the electrical angle. the graphs recieved are:&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/23-10-2024-1729702872-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;as can be seen the alpha beta coordiante are as expected but dq is not and is producing a wave with twice the frequency of electrical. Appreciate anyone helping in solving this issue.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-391091","topic","type-topic","status-publish","hentry","topic-tag-AnsysMaxwellelectronics-1","topic-tag-3d-maxwell-simulation","topic-tag-dq-control-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["142.177.29.66"],"_btv_view_count":["467"],"_bbp_topic_status":["unanswered"],"_bbp_notification_enabled":["337297"],"_bbp_subscription":["214"],"_bbp_topic_id":["391091"],"_bbp_forum_id":["27793"],"_bbp_engagement":["214","337297"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["394342"],"_bbp_last_active_id":["394342"],"_bbp_last_active_time":["2024-11-19 16:17:44"]},"test":"bpedarvictoryadvancedtech-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/391091","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\/391091\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=391091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}