{"id":428211,"date":"2025-04-08T01:20:38","date_gmt":"2025-04-08T01:20:38","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/negative-capacitence-values-in-ansys-maxwell\/"},"modified":"2025-04-08T01:20:38","modified_gmt":"2025-04-08T01:20:38","slug":"negative-capacitence-values-in-ansys-maxwell","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/negative-capacitence-values-in-ansys-maxwell\/","title":{"rendered":"Negative Capacitence Values In Ansys Maxwell"},"content":{"rendered":"<p>&lt;p&gt;I have a cylindrical shape composed of copper squares. I&#8217;d like to excite one of them to a certain voltage, set all the other electrodes equal to zero, and then measure the capacitence between one copper plate and all the others. When I measure, I receive negative capacitence values, but only a positive capacitence value when measuring between a plate and itself. The simulation setup is electrostatic, I have a matrix that is composed of the voltages of each plate, and I am running a capacitence scan with 20 passes and 0.5% error based on that matrix. Could anyone explain why I am getting negative capacitence values?&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/04\/08-04-2025-1744075013-ForANSYSForum.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-428211","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27793"],"_bbp_topic_id":["428211"],"_bbp_author_ip":["206.207.159.2"],"_bbp_last_reply_id":["428330"],"_bbp_last_active_id":["428330"],"_bbp_last_active_time":["2025-04-08 17:22:58"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["538362","82626"],"_btv_view_count":["215"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["82626"]},"test":"naegeliimy-erau-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428211","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\/428211\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=428211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}