{"id":38735,"date":"2019-11-04T21:35:00","date_gmt":"2019-11-04T21:35:00","guid":{"rendered":"\/forum\/forums\/topic\/q3d-issuse-why-dc-resistance-is-greater-than-ac-resistance-at-60hz-and-20khz\/"},"modified":"2019-11-04T21:35:00","modified_gmt":"2019-11-04T21:35:00","slug":"q3d-issuse-why-dc-resistance-is-greater-than-ac-resistance-at-60hz-and-20khz","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/q3d-issuse-why-dc-resistance-is-greater-than-ac-resistance-at-60hz-and-20khz\/","title":{"rendered":"Q3D issuse: why DC resistance is greater than AC resistance at 60Hz and 20kHz?"},"content":{"rendered":"<p>I&#8217;m working on extraction&nbsp; of parasitic parameters of power module by Q3D.<\/p>\n<p><\/p>\n<p>For default, AC resistance&amp;inductance is extracted at 1GHz. The results from this setting looks good, and AC resistance is much greater than DC resistance due to skin effect and proximity effect.<\/p>\n<p><\/p>\n<p>However, the results are wired when I change the solution frequency to 60Hz or 20kHz, the DC resistance is 10 times larger than AC.<\/p>\n<p><\/p>\n<p>Does anybody have the same issue, or give me some suggestion about it?<\/p>\n<p><\/p>\n<p>Thanks.<\/p>\n<p><\/p>\n<p>Bo<\/p>\n","protected":false},"template":"","class_list":["post-38735","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["10913"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["785"],"_bbp_subscription":["244548"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["38735"],"_bbp_forum_id":["27793"],"_bbp_engagement":["165063","170177","179505"],"_bbp_voice_count":["3"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["139760"],"_bbp_last_active_id":["139760"],"_bbp_last_active_time":["2021-01-23 04:01:05"]},"test":"templor"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/38735","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\/38735\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=38735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}