{"589948":{"#nid":"589948","#data":{"type":"event","title":"Ph.D. Proposal Oral Exam - Shen Zhang","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETitle:\u0026nbsp; \u003C\/strong\u003E\u003Cem\u003EMulti-Objective Design, Optimization, and Condition Monitoring of\u003Cbr \/\u003E\r\nHigh-Performance Electric Machines for Traction Applications\u003C\/em\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Habetler, Advisor\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Graber, Chair\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Harley\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe objective of the proposed research is to develop methods for the\u003Cbr \/\u003E\r\nmulti-objective design, optimization, and condition monitoring of electric\u003Cbr \/\u003E\r\nmachines, so as to generate the optimal designs and improve machine\u003Cbr \/\u003E\r\nrobustness for traction applications. In particular, the selected\u003Cbr \/\u003E\r\nhigh-performance electric machines are the switched reluctance machines (SRM)\u003Cbr \/\u003E\r\nwith simple and robust structure, and the interior permanent magnet (IPM)\u003Cbr \/\u003E\r\nmachines with high torque density and efficiency. For SRMs, an active current\u003Cbr \/\u003E\r\nprofiling technique integrated multi-objective analytical design and\u003Cbr \/\u003E\r\noptimization is proposed to generate the optimal designs in terms of the\u003Cbr \/\u003E\r\nmultiple performance indices, which is proved to be accurate and time-saving,\u003Cbr \/\u003E\r\nespecially for a large search space with multiple prime design variables. The\u003Cbr \/\u003E\r\nproposed scheme offers machine designers accurate, handy and convenient\u003Cbr \/\u003E\r\ninitial designs, which can be further verified or fine-tuned by FEA. To\u003Cbr \/\u003E\r\nmonitor the demagnetization properties of the closed-loop direct torque\u003Cbr \/\u003E\r\ncontrolled (DTC) IPMSMs, a nonintrusive high-frequency flux injection based\u003Cbr \/\u003E\r\nPM temperature estimation method is proposed by analyzing the PM electrical\u003Cbr \/\u003E\r\nhigh-frequency resistance, which is a byproduct of the eddy current loss\u003Cbr \/\u003E\r\ninduced by the applied high-frequency magnetic field. The developed IPM\u003Cbr \/\u003E\r\nmachine model results in practical ways to excite a proper amount of\u003Cbr \/\u003E\r\nhigh-frequency current into the stator windings, which leads to a simple,\u003Cbr \/\u003E\r\naccurate, and non-intrusive permanent magnet thermal monitoring scheme for\u003Cbr \/\u003E\r\nDTC-controlled IPM machines.\u003Cbr \/\u003E\r\nUpload Attachment\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Multi-Objective Design, Optimization, and Condition Monitoring of  High-Performance Electric Machines for Traction Applications"}],"uid":"30865","created_gmt":"2017-04-07 11:18:26","changed_gmt":"2017-04-07 11:18:26","author":"Jacqueline Trappier","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-04-17T16:00:00-04:00","event_time_end":"2017-04-17T17:00:00-04:00","event_time_end_last":"2017-04-17T17:00:00-04:00","gmt_time_start":"2017-04-17 20:00:00","gmt_time_end":"2017-04-17 21:00:00","gmt_time_end_last":"2017-04-17 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"434371","name":"ECE Ph.D. Proposal Oral Exams"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"},{"id":"1808","name":"graduate students"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}