{"id":34727,"date":"2021-01-11T13:21:18","date_gmt":"2021-01-11T18:21:18","guid":{"rendered":"https:\/\/blogarchive.utc.edu\/news\/?p=34727"},"modified":"2025-08-10T10:58:59","modified_gmt":"2025-08-10T14:58:59","slug":"worldwide-expert-asks-to-use-research-findings-of-utc-professor-and-student","status":"publish","type":"post","link":"https:\/\/blogarchive.utc.edu\/news\/2021\/01\/worldwide-expert-asks-to-use-research-findings-of-utc-professor-and-student\/","title":{"rendered":"Worldwide expert asks to use research findings of UTC professor and student"},"content":{"rendered":"<div id=\"attachment_34729\" class=\"wp-caption aligncenter\" ><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"393\" data-attachment-id=\"34729\" data-permalink=\"https:\/\/blogarchive.utc.edu\/news\/2021\/01\/worldwide-expert-asks-to-use-research-findings-of-utc-professor-and-student\/karrar1\/\" data-orig-file=\"https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1.png\" data-orig-size=\"600,393\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Karrar1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1.png\" class=\"wp-image-34729\" src=\"https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1.png\" alt=\"\" style=\"max-width: 100%;\"style=\"max-width: 100%;\" srcset=\"https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1.png 600w, https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1-300x197.png 300w, https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1-580x380.png 580w, https:\/\/blogarchive.utc.edu\/news\/files\/2021\/01\/Karrar1-250x164.png 250w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><p class=\"wp-caption-text\">Graduate student Babikir Mohamed Ahmed, left, and Abdelrahman Karrar, interim head of the Department of Electrical Engineering.<\/p><\/div>\n<div><\/div>\n<div><\/div>\n<div class=\"well span3 pull-right\"><strong>To read the research paper, go to:<\/strong><br \/>\n<strong><a href=\"https:\/\/bit.ly\/3siO5Qq\">https:\/\/bit.ly\/3siO5Qq<\/a><\/strong><\/div>\n<p>Almost a year of writing, reviewing and rewriting complex mathematical equations on techniques for testing electrical power networks.<\/p>\n<p>Then nine months of writing, reviewing and rewriting a research paper on techniques for testing electrical power networks, getting the paper ready for publication.<\/p>\n<p>Three weeks after publication in a major scholarly journal, an email arrives from the worldwide expert on the research subject, saying he\u2019d like to test the equations in his own work.<\/p>\n<p>\u201cHe\u2019s a well-known guy. He&#8217;s actually one of the guys we cited most in the paper because most of the work is his intellectual property,\u201d said Abdelrahman Karrar, interim head of the Department of Electrical Engineering at the University of Tennessee at Chattanooga. Karrar worked with three graduate students to conduct the research, including Babikir Mohamed Ahmed, who&#8217;s pursuing a master&#8217;s in electrical engineering.<\/p>\n<p>The world-renown expert is Christian Dufour, senior simulation specialist in power systems and motor drives at Opal-RT, a Canada-based, global developer of power grids and electronics for various industries, including autos, trains and aircraft.<\/p>\n<p>\u201cHe said that he read the paper with great interest and would we be interested in him adopting the method to run some demos,\u201d said Karrar, who does not know Dufour personally nor ever talked to him, either in person or through email.<\/p>\n<p>Of course, the answer to Dufour\u2019s request was something along the lines of\u2014pause for moment of brain freeze\u2014\u201cUh, sure.\u201d<\/p>\n<p>Using only mathematical equations, Karrar and Ahmed and\u00a0 graduate students Amira Abdelgadir and Noman A. Saied researched and wrote the paper on decoupling, a process that keeps electrical distribution networks working smoothly. Despite the worldwide use of decoupling, it has limitations, Karrar explained, and his and Ahmed\u2019s research suggests ways to get around some of the limitations.<\/p>\n<p>It was not always a smooth, Step One, Step Two, Step Three process.<\/p>\n<p>\u201cIt can be a bit frustrating for a brief amount of time when it doesn&#8217;t work out as planned, but we always circle back to find what we did wrong and then go forward in the right direction,\u201d Ahmed said.<\/p>\n<p>Dufour says Karrar\u2019s and Ahmed\u2019s ideas may make it possible for Opal-RT computer simulators to test large electrical distribution grids at the same speed the grids will use when put into real-world operations. Lab testing power grids of this size \u201cis especially challenging,\u201d Dufour said.<\/p>\n<p>\u201cEngineers will use the simulator to find issues in the lab before commissioning to avoid the high costs of correcting problems in the field after deployment,\u201d he explained.<\/p>\n<p>Ahmed described Dufour\u2019s response as \u201cexciting.\u201d<\/p>\n<p>\u201cIt feels good. When we started on this, we were just trying to fix a small issue and now we ended up with this work. I never thought at the beginning it can go this far,\u201d said Ahmed, who came to UTC after studying at the University of Khartoum in his home country of Sudan, the home country of Karrar, and the university where he previously taught.<\/p>\n<p>While research beginnings started in the summer of 2019, Ahmed had an internship in the power generation department at local engineering firm Mesa Associates, Inc. and Karrar had his job, so they met only every few weeks, Ahmed said. Crunching numbers didn\u2019t truly crank up until December.<\/p>\n<p>\u201cWe got together every day for about three weeks and we finished the work,\u201d Ahmed said. \u201cIt was during the Christmas break, and that was when we could really focus.\u201d<\/p>\n<p>Karrar notes that, to do the work, vacations over the break were out of the question. Ahmed was planning to go back to Sudan for a few weeks, but that didn\u2019t happen, and Karrar\u2019s holiday plans also went by the wayside.<\/p>\n<p>\u201cWe came here every day and that really worked because we got the breakthrough during that period,\u201d Karrar said. \u201cWe sacrificed our vacation.\u201d<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UTC electrical engineering research generates international interest.<\/p>\n<p class=\"more-link-wrap\"><span><a class=\"more-link button text\" href=\"https:\/\/blogarchive.utc.edu\/news\/2021\/01\/worldwide-expert-asks-to-use-research-findings-of-utc-professor-and-student\/\"><span>Continue Reading <\/a><\/span><\/p>\n","protected":false},"author":1105,"featured_media":35140,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_ef_editorial_meta_checkbox_slider":"","_ef_editorial_meta_checkbox_featurette":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[48048,59,3,8244,64],"tags":[125863,99321],"class_list":{"0":"post-34727","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-college-of-engineering-and-computer-science","8":"category-community","9":"category-electrical-engineering","10":"category-honors-and-awards","11":"category-news","12":"tag-abdel-karrar","13":"tag-babikir-mohamed-ahmed","14":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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