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Electrical drives for eMobility

01TVTQW

A.A. 2022/23

Course Language

Inglese

Course degree

Master of science-level of the Bologna process in Mechatronic Engineering (Ingegneria Meccatronica) - Torino

Course structure
Teaching Hours
Teachers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Teaching assistant
Espandi

Context
SSD CFU Activities Area context
ING-IND/32 6 D - A scelta dello studente A scelta dello studente
2022/23
The course aims at providing to students the knowledge for the analysis, design and implementation of high-performance control techniques for electrical drives (eDrives) employed in transports electrification, with a particular focus on hybrid and electrical vehicles. The object of study will be the eDrives for powertrains, in detail focusing on the system composed of an inverter plus an electrical motor (eMotor). In detail, they will be considered the eMotors typically used in electrical traction like induction motor (IM), permanent magnet synchronous motor (PMSM), and synchronous reluctance motor (SyR). By using analytical approaches supported by experimental testing procedures, the course will focus on designing the torque control scheme of a generic eMotor for traction applications, aiming to maximise the overall eDrive efficiency in all potential operative conditions. Also, the course will provide students with the methodologies for performing simulations of eDrives for traction applications, thus allowing the possibility to make assessments both from the torque control and energetic point of view.
• Ability to analyze and model the main components of an eDrive for traction applications like the eMotor and power converter (inverter). • Ability to properly organize and execute the testing procedures for the experimental identification of flux-, torque- and efficiency- maps of eMotors, including losses models. • Ability to design accurate torque control algorithms of eMotors typically used in traction applications, with the aim of maximizing the overall eDrive efficiency in each potential operative condition. • Ability to virtualize e simulate the main components of an eDrive (eMotor, inverter, digital controller) to perform technical and energetic assessments.
Basic theory of electrical circuits (dc, single-phase and three-phase ac), electrical machines, and basic concepts of automatic control. It is strongly suggested the attendance and pass the following preparatory courses: - 02LONQW Electrical Machines - 01TVEQW Electrical Technologies for eMobility
• Introduction: general description of an eDrives, eDrives for hybrid and electrical architectures - (3 hours, 0.3 CFU) • Dynamic models of eMotors: fundamental concepts, definition and computation of flux/torque maps - (6 hours, 0.6 CFU) • Virtualization and simulation of eMotors - (6 hours, 0.6 CFU) • Modeling, virtualization, and simulation of three-phase inverters - (3 hours, 0.3 CFU) • Modeling of nonlinearities and losses of three-phase inverters: conduction and switching losses, dead-time voltage errors - (3 hours, 0.3 CFU) • Experimental identification of parameters and flux/torque maps of eMotors - (6 hours, 0.6 CFU) • Performance evaluation and optimal torque control of eMotors - (10 hours, 1 CFU) • Optimization strategies of eDrives (eMotor plus inverter) efficiency - (3 hours, 0.3 CFU) • Current vector control of eMotors: fundamental concepts, field-oriented control (FOC), discrete-time implementation of torque control algorithms on microcontrollers (MCUs) - (8 hours, 0.8 CFU) • Integration of optimal torque control strategies on FOC schemes: n-dimensional LUT-based FOC - (6 hours, 0.6 CFU) • Virtualization and simulation of eDrives: performance- and energetic- assessments - (6 hours, 0.6 CFU)
In addition to classroom lectures presenting theoretical concepts, the following exercise activities carried out in informatic laboratories using the software Matlab/Simulink are planned: • Implementation and simulation of eMotors and power converters • Development of calculation codes of flux/torque maps of eMotors starting from the results of the experimental testing procedures • Development of calculation codes to evaluate performance and maximize the efficiency of torque control of eMotors and/or eDrives. • Implementation and simulation of eDrives: performance analysis of the torque controller and energetic assessments
• Slides provided by the professor on the teaching web portal • Notes of the courses ‘Electrical Machines’ and Electrical Technologies for eMobility’ • Bose, Bimal K., “Power Electronics and Motor Drives: Advances and Trends”, Elsevier Science, 2020 • Scientific IEEE papers on https://ieeexplore.ieee.org/Xplore/home.jsp; the IEEE database can be freely accessed using PoliTO networks.
Modalità di esame: Test informatizzato in laboratorio; Prova orale obbligatoria;
Exam: Computer lab-based test; Compulsory oral exam;
... Test in the informatic laboratory (2 hours): the test consists of exercises solved with the help of the software Matlab/Simulink. Books, notes, or equivalent materials are not allowed during the test. The test exercises aim at evaluating the ability of the students in the following aspects: a) model and analyze the main components of an eDrive like eMotor and power converter; b) design and implementation of high-efficiency torque control algorithms starting from experimental and/or theoretical flux-, torque-, and losses maps of the eDrive under test; c) perform technical and energetical assessments of eDrives using simulation environments. Oral exam (30-45 minutes): the admission to the oral exam is conditioned by passing the test in the informatic laboratory. The oral exam consists of theoretical questions based on the course’s topics. The final score is calculated as the weighted arithmetic mean between the score of the test in the informatic laboratory (60%) and the score of the oral exam (40%).
Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.
Exam: Computer lab-based test; Compulsory oral exam;
Test in the informatic laboratory (2 hours): the test consists of exercises solved with the help of the software Matlab/Simulink. Books, notes, or equivalent materials are not allowed during the test. The test exercises aim at evaluating the ability of the students in the following aspects: a) model and analyze the main components of an eDrive like eMotor and power converter; b) design and implementation of high-efficiency torque control algorithms starting from experimental and/or theoretical flux-, torque-, and losses maps of the eDrive under test; c) perform technical and energetical assessments of eDrives using simulation environments. Oral exam (30-45 minutes): the admission to the oral exam is conditioned by passing the test in the informatic laboratory. The oral exam consists of theoretical questions based on the course’s topics. The final score is calculated as the weighted arithmetic mean between the score of the test in the informatic laboratory (60%) and the score of the oral exam (40%).
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.
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