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\u0627\u0644\u0646\u062a\u0627\u0626\u062c \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0645\u0639 \u0646\u062a\u0627\u0626\u062c \u0627\u0644\u0645\u062d\u0627\u0643\u0627\u062a \u0648\u0643\u0644\u0627\u0647\u0645\u0627 \u062a\u0634\u062f\u062f \u0639\u0644\u0649 \u0623\u0646\u00a0 \u062a\u062a\u0628\u0639 \u0627\u0644\u062a\u063a\u064a\u064a\u0631 \u0641\u064a \u0639\u062f\u062f \u0627\u0644\u0644\u0641\u0627\u062a \u0644\u0645\u0644\u0641\u0627\u062a \u0627\u0644\u062c\u0632\u0621 \u0627\u0644\u062b\u0627\u0628\u062a \u0643\u0641\u0648\u0621 \u0644\u062a\u0634\u062e\u064a\u0635 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0645\u0644\u0641 \u0628\u0627\u0644\u062c\u0632\u0621 \u0627\u0644\u062b\u0627\u0628\u062a.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-large wp-image-30733\" src=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09288-1024x576.jpg\" alt=\"\" width=\"1024\" height=\"576\" srcset=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09288-1024x576.jpg 1024w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09288-300x169.jpg 300w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09288-768x432.jpg 768w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09288-600x337.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><img decoding=\"async\" class=\"alignnone size-large wp-image-30734\" src=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1-1024x576.jpg\" alt=\"\" width=\"1024\" height=\"576\" srcset=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1-1024x576.jpg 1024w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1-300x169.jpg 300w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1-768x432.jpg 768w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1-600x337.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><img decoding=\"async\" class=\"alignnone size-large wp-image-30735\" src=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1024x576.jpg\" alt=\"\" width=\"1024\" height=\"576\" srcset=\"https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-1024x576.jpg 1024w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-300x169.jpg 300w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-768x432.jpg 768w, https:\/\/coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/3\/2020\/09\/DSC09298-600x337.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong>M.Sc. Student in Electrical Engineering Department <\/strong><strong>\u201c<\/strong><strong>Raya A. K. Aswad<\/strong><strong>\u201d<\/strong><strong> Defends Her Thesis <\/strong><\/p>\n<p>Translated by: Dr. Rabab Hameed Shghedl Al-Darraji<\/p>\n<p>&nbsp;<\/p>\n<p>The M.Sc. student Ms. Raya A.K.\u00a0 Aswad was examined in the contents of the thesis entitled:<\/p>\n<p>\u201cModel-based Diagnosis of Stator Winding Faults in Induction Motor\u201d<\/p>\n<p>which she prepared in the Department of Electrical Engineering\/College of Engineering\/Baghdad University in partial fulfillment of the requirements for the degree of M.Sc. in Electrical Engineering under the supervision of Asst. Prof Bassim M.H. Jassim, Ph.D. on Monday 28-9-2020.The examining committee consisted of Asst. Prof. Hanan Michael Dawod, Ph.D.(Chairperson of the Examining Committee) and Asst. Prof. Mohammad Kazem Edan, Ph.D., Lect. Asslan Sabah Al-Deen Jalal(Members of the Examining Committee).<\/p>\n<p>The abstract of the student\u2019s thesis is as follows:<\/p>\n<p>Three-phase induction motors consume more than half of the total generation of electricity in the world due to their merits, such as simplicity, low cost, and self-starting capability. Therefore, they are enormously used in industrial applications under different environmental conditions that may subject them to electrical and mechanical stresses. Consequently, the stresses can cause several types of faults, which are progress to failure and result in the total shutdown of systems. Hence, the usage of a condition-based maintenance strategy (CBM) has become a trending. This kind of maintenance strategy requires continuous monitoring of the motor health condition. Working with CBM is based on the information provided by diagnosis techniques, and it is essential for reducing both the time and costs of unexpected downtime. Thus, this research is interested in developing a diagnostic system capable of discrimination between healthy and faulty conditions, even with disturbances such as imbalanced supply voltages, load level variations, and measurements noise. Furthermore, this work is devoted to diagnosing the stator winding faults because they are the most frequent.<\/p>\n<p>In order to achieve that aim, a model-based diagnosis method is used with the aid of optimization methods (genetic algorithm \u2018GA\u2019 and trust-region method \u2018TRM\u2019) to estimate the variations in basic parameters of the machine (resistances, inductances of stator and rotor, mutual inductance) and the number of turns in stator windings under healthy, single-phasing and faulty with inter-turn fault conditions. The simulation results show that the parameters have related variations with the faulty state nature, and their deviations from the initial values can be considered as fault\u2019s symptoms. In addition, those symptoms can be employed using the fuzzy logic classifier to declare the machine\u2019s condition, the fault severity, and location. These results confirm that GA and TRM converge similarly, but TRM is faster than GA. The proposed diagnostic system needs only voltage and current signals and can diagnose the incipient stage of fault at different load level cases and under imbalanced supply voltages. Experimental validation of the proposed diagnostic system using both noisy and noise-free measured signals has also been considered. The experimental results are in agreement with the simulation results and both emphasize that tracking the variation of the number of turns in stator windings is efficient for diagnosing the stator winding faults.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0637\u0627\u0644\u0628\u0629 \u0627\u0644\u0645\u0627\u062c\u0633\u062a\u064a\u0631 \u0641\u064a \u0642\u0633\u0645 \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 &#8220;\u0631\u064a\u0627 \u0639\u0628\u062f \u0627\u0644\u0643\u0631\u064a\u0645 \u0623\u0633\u0648\u062f&#8221; \u062a\u0646\u0627\u0642\u0634 \u0631\u0633\u0627\u0644\u062a\u0647\u0627 \u0646\u0648\u0642\u0634\u062a \u0631\u0633\u0627\u0644\u0629 \u0627\u0644\u0645\u0627\u062c\u0633\u062a\u064a\u0631 \u0627\u0644\u0645\u0648\u0633\u0648\u0645\u0629: &#8220;\u0623\u0644\u0646\u0645\u0630\u062c\u0629 \u0644\u062a\u0634\u062e\u064a\u0635 \u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0645\u0644\u0641 &#8230; <a class=\"cz_readmore\" href=\"https:\/\/coeng.uobaghdad.edu.iq\/?p=30731\"><i class=\"fa fa-angle-left\" aria-hidden=\"true\"><\/i><span>\u0627\u0644\u0645\u0632\u064a\u062f<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":30733,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[25,49,8,64],"tags":[],"class_list":["post-30731","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-25","category-49","category-8","category-64"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0637\u0627\u0644\u0628\u0629 \u0627\u0644\u0645\u0627\u062c\u0633\u062a\u064a\u0631 \u0641\u064a \u0642\u0633\u0645 \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 &quot;\u0631\u064a\u0627 \u0639\u0628\u062f \u0627\u0644\u0643\u0631\u064a\u0645 \u0623\u0633\u0648\u062f&quot; 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