{"id":1903,"date":"2024-07-25T18:37:18","date_gmt":"2024-07-25T15:37:18","guid":{"rendered":"https:\/\/www.iem.ihu.gr\/?post_type=course&p=1903"},"modified":"2025-05-28T20:35:39","modified_gmt":"2025-05-28T17:35:39","slug":"95-03","status":"publish","type":"course","link":"https:\/\/www.iem.ihu.gr\/en\/courses\/95-03\/","title":{"rendered":"Selected Topics of Electrical Machines"},"author":5,"template":"","meta":{"_acf_changed":false},"semester":[67],"course_type":[59],"class_list":["post-1903","course","type-course","status-publish","hentry","semester--1-2-3-9","course_type-optional"],"acf":{"code":"95.03","semester":67,"level":"1","teaching_activities":{"activity_1":{"description":"Theory","weekly_hrs":2,"ects":4},"activity_2":{"description":"Exercises","weekly_hrs":1,"ects":""},"activity_3":{"description":"","weekly_hrs":"","ects":""},"activity_4":{"description":"","weekly_hrs":"","ects":""},"activity_5":{"description":"","weekly_hrs":"","ects":""}},"type":59,"language":"\u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ac","erasmus":"\u038c\u03c7\u03b9","url":"https:\/\/exams-sm.the.ihu.gr\/enrol\/index.php?id=54","prerequisites":"","instructors":[1989],"coordinator":"","content":"Theoretical part:\r\n\u00b7 Mathematical Models of 3-phase Electric Machines (Inductive and Modern),\r\n\u00b7 Per Unit System,\r\n\u00b7 Simple Electrical Equivalent Circuits, Control and Limitations during Operation,\r\n\u00b7 Operation in Transitional and Steady State in a two-axis system, V \/ f Control),\r\n\u00b7 Formulation of square pulses in voltage inverters (PWM inverters), Advantages of Vector Control (Response and Strength of Control; per Ampere (MTPA), Speed Range Expansion \u00b7Flux or Field Weakening,\r\n\u00b7 Electric Power Converters, 3-phase Inverters, Sinusoidal PWM (Simulink Model of Inverter), Production of 3-phase power supply, Harmonic analysis\r\nof the supply-driving voltage, effects on the generated electric torque.\r\n\u00b7 Analysis of the behavior of electric motors in different fault conditions,\r\n\u00b7 Advanced control of operating conditions for fault diagnosis, signal processing, variable measurements,\r\n\u00b7 Procedure for determination and fault estimation (current signal analysis, development of appropriate models, observers of variables, etc.),\r\nTasks - Practice Exercises:\r\n\u00b7 One Phase Error Analysis, Short-circuit of the winding part (Matlab \/ Simulink),\r\n\u00b7 Error Analysis of the Magnetic Field of the Rotor (Matlab \/ Simulink),\r\n\u00b7 Simulation of the Electric Motor Fault (Matlab \/ Simulink),\r\n\u00b7 Development of Error Observers (Matlab \/ Simulink).","goals":"The aim of the course is to provide the student with the necessary knowledge regarding the principles of conventional operation of AC electric machines and their control considering the existence of errors.\r\nKnowledge:\r\n- Understanding the design, operation and control methods of electric motors through the development of electric motor models in fixed and rotating reference systems.\r\n- Understand the use of observers and analysis of current signals in order to detect and diagnose operating errors.\r\nSkills:\r\n- Acquisition of design and calculation of simple electrical and mechanical equivalent mathematical models of electric motors.\r\n- Acquisition of fluency in the design of observers-indicators of the operating conditions of the electric motor.\r\n- Acquisition of skills in the analysis of the structure of simple observers.\r\n- Methodical analysis and presentation of errors and the influence they have on the performance of the machine (eg torque fluctuations, additional harmonic stator currents, etc.) through simulation results.\r\n- Analysis, design and implementation of advanced methods for error detection and diagnosis in AC electric motors.","skills":"Research, analysis and synthesis of data and information, using corresponding technologies, Adaptation to new situations, Independent work, Teamwork \u2013 distribution of responsibilities, Intellectual competences.","teaching_methods":"Lectures, Exercises, Online guidance, Projected Presentations, E-mail communication, Online Synchronous and Asynchronous Teaching Platform (moodle).","students_evaluation":"Assessment Language: English \/ Greek\r\nThe final grade of the course is formed 100% by the grade of the theoretical part and the intermediate examination or project.\r\n1. The written final examination of the theoretical part may include:\r\nSolving of application problems, short answer questions, comparative evaluation of the theory elements etc.\r\n2. The continuous evaluation of the theoretical knowledge that were acquired in the course by the method of project including the fault modelling of a 3-phase electrical machine.","bib_textbooks":"1. Analysis of electric machinery and drive systems, Paul Krause, Oleg Wasynczuk, Scott Sudhoff, Steven Pekarek: 3rd Edition, \u00a9 2013, IEEE.\r\n2. Electrical Machine Drives Control: An Introduction, Juha Pyrh\u00f6nen, Val\u00e9ria Hrabovcov\u00e1, R. Scott Semken, \u00a92016, John Willey & Sons Ltd.\r\n3. Electric Motors and Drives: Fundamentals, Types and Applications, Austin Hughes, 3rd Edition, \u00a92006, Austin Hughes. Published by Elsevier Ltd.\r\n4. Motor Handbook, Fang Qi, Daniel Scharfenstein, Claude Weiss (Institute for Power Electronics and Electrical Drives, RWTH Aachen University), Clemens M\u00fcller, Ulrich Schwarzer (Infineon Technologies AG), Version 2.1, \u00a9 2019, infineon, iSEA, RWTH Aachen University.","bib_journals":""},"_links":{"self":[{"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course\/1903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course"}],"about":[{"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/types\/course"}],"author":[{"embeddable":true,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/users\/5"}],"version-history":[{"count":6,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course\/1903\/revisions"}],"predecessor-version":[{"id":4253,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course\/1903\/revisions\/4253"}],"acf:post":[{"embeddable":true,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/staff\/1989"}],"acf:term":[{"embeddable":true,"taxonomy":"course_type","href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course_type\/59"},{"embeddable":true,"taxonomy":"semester","href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/semester\/67"}],"wp:attachment":[{"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/media?parent=1903"}],"wp:term":[{"taxonomy":"semester","embeddable":true,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/semester?post=1903"},{"taxonomy":"course_type","embeddable":true,"href":"https:\/\/www.iem.ihu.gr\/en\/wp-json\/wp\/v2\/course_type?post=1903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}