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Electrical drives for eMobility
02TVTWM
A.A. 2026/27
Course Language
Inglese
Degree programme(s)
Master of science-level of the Bologna process in Automotive Engineering - Torino
Borrow
01UTFWM
Course structure
| Teaching | Hours |
|---|---|
| Lezioni | 52 |
| Esercitazioni in aula | 14 |
| Esercitazioni in laboratorio | 14 |
Lecturers
| Teacher | Status | SSD | h.Les | h.Ex | h.Lab | h.Tut | Years teaching |
|---|---|---|---|---|---|---|---|
| Bojoi Iustin Radu | Professore Ordinario | IIND-08/A | 52 | 4 | 0 | 0 | 7 |
Co-lectures
Context
| SSD | CFU | Activities | Area context | ING-IND/32 | 8 | C - Affini o integrative | Attività formative affini o integrative |
|---|
2026/27
The course aims at providing to the students the basic concepts of the electrical energy conversion systems employed in transportation electrification, with a particular focus on hybrid and electrical vehicles. The systems under study will be the electrical drives for powertrains and the battery chargers. The electrical motors belong to the new generations of eMotors dedicated to electrical traction, such as induction motors, synchronous reluctance motors and internal permanent magnet motors. The course will provide also the basic concepts of vector control of traction drives, along with testing techniques to obtain efficiency maps and torque production maps.
The course Electrical Drives for eMobility provides students with the fundamental principles of electrical energy conversion systems used in transportation electrification, with particular emphasis on xEVs : HEV, BEV, FCEV – hybrid electrical vehicles, battery electric vehicles, and hydrogen fuel-cell electric vehicles. The course presents the analysis and modelling of the main subsystems of electric powertrains, including traction batteries, fuel cells, supercapacitors, power electronic converters (inverters), and electric motors, as well as battery charging systems and the associated infrastructure for vehicle-to-grid connection.
Special attention is devoted to the new generation of electric machines for traction applications, including Surface-Mounted Permanent Magnet (SMPM) motors, Induction Motors (IM), Internal Permanent Magnet (IPM) motors, Permanent Magnet-Assisted Synchronous Reluctance (PM-SyR) motors and Electrically Excited Synchronous Motors (EESMs).
Adopting a systemic approach, the course focuses on the development and analysis of energetic simulation models for the complete electric powertrain. These models account for the efficiency maps of each subsystem and the operating constraints affecting torque generation and energy conversion. In addition, the course introduces the fundamental principles of vector control techniques for traction drives, providing students with the essential tools for analysis and motor torque control in emerging electric propulsion systems.
Capability to understand the structure of a traction electrical drive consisting of a power electronic converter and an electrical machine. Ability to compare different electric drive solutions based on different motor technologies. Capacity to design or to tune the control loops (torque, current, speed) of an electric drive.
At the end of the course, the students must be able to:
• Understand the structure of a traction electrical drive for xEVs, consisting of battery, fuel cell, power electronic converters, and electrical machines.
• Understand the technologies used for the power electronic switches and their packaging, to evaluate the performance of power electronics on the powertrain performance and cost.
• Compare different electric drive solutions based on different motor technologies.
• Provide the right specifications for the components of an electrical powertrain, according to the vehicle specifications.
• Develop simulation models of electric powertrain components (battery, converter, motor, fuel cell) that must be integrated in vehicle models.
• Understand the motor torque control solutions applied to the eMotor solutions applied to xEVs.
Fundamentals in electrical circuits, electrical machines, automatic control or the basic concepts in systems theory.
Fundamentals in electrical circuits, electrical machines, automatic control or the basic concepts in systems theory.
• Introduction: general description of an electric drive
• Power electronic devices used in power electronic converters
• Basic operation principles of a switch-mode power electronic converter. Canonical commutation cell.
• DC/DC converters for eMobility.
• DC / AC converters (inverters) for eMobility.
• Electrical motor solutions for eMobility: induction motor, synchronous reluctance motor, internal permanent magnet motor
• Fundamental concepts of vector control for AC motors fed by inverters
• Vector control of eDrives: design of the drive control loops (current, speed and position).
• Implementation issues of high performance vector control of eMotors: Maximum Torque per Ampere (MTPA), Maximum Torque per Volt (MTPV), torque estimation, computation of maximum torque according to the voltage and current limits
• Advanced testing of eDrives.
• Battery chargers: on-board and off-board solutions.
• Introduction: definition of eMobility and presentation of most generic structure of an eDrive
• eDrives for Architectures of Hybrid and Electrical Vehicles
• Energy sources for eMobility: batteries, ultracapacitors, fuel-cells
• Fundamental concepts of power converters: classification, switch-mode power converters, canonical switching cell, inductors and capacitors
• Power electronic devices used in power electronic converters: diode, MOSFET, IGBT, WBG devices, packaging solutions and thermal modeling
• AC-DC converters for eMobility
• DC/DC converters for eMobility.
• DC / AC converters (inverters) for eMobility.
• Electrical motor solutions for eMobility: permanent magnet synchronous motor (PMSM), induction motor, synchronous reluctance motor (SyR), internal permanent magnet (IPM) motor, electrically excited synchronous motor (EESM).
• Fundamental concepts of torque control for eMotors
• Fundamental concepts of the control of power converters and eDrive
• Fundamental concepts of vector control of AC machines
• Classification of e-motor solutions and torque production of AC e-motors
• Vector torque control of AC motors for eMobility for best torque generation under inverter current and voltage constraints (MTPA, MTPV).
• Battery chargers: on-board and off-board solutions.
In addition to classroom lectures, laboratory activities are planned. The laboratory exercises concern the analysis of the operation of an electric drive with internal permanent magnet motor.
In addition to classroom lectures, the following exercise activities with hands-on Matlab-Simulink are planned:
• Battery Pack (3 h)
• Discrete-Time Controllers and Implementations (3h)
• Buck Converter with Current Control (3 h)
• Boost Converter with Cascaded Voltage and Current Control (3 h)
• Voltage Source Inverter with Voltage Errors (3 h)
• PMSM model with Magnetic Saturation (3h)
• MTPA-based CVC of PMSM (3h)
• EESM model with Magnetic Saturation (3h)
• MTPA-based CVC of EESM with Full-Bridge (3h)
• MTPS and Efficiency Maps of PMSM with losses (3h)
• Neil Storey “Electronics: a system approach”, Pearson Education
• T.L. Floyd “Electronic Devices”, Prentice Hall
• Ned Mohan, Tore Undeland, Tim Robbins, "Elettronica di Potenza", Edizioni Hoepli
• Rashid, M. H., 'Elettronica di Potenza', Prentice Hall
• John Kassakian, Marting F. Schlecht, George V. Verghese, “Principles of Power Electronics”, Pearson Education.
• Rashid, M. H., 'Elettronica di Potenza', Prentice Hall
• Ali Emadi, "Advanced Electric Drive Systems", CRC Press, 2014.
• Chris Mi, “Hybrid Electric Vehicles”, John Wiley&Sons, 2018.
Slides;
Lecture slides;
Modalita di esame: Prova scritta in aula tramite PC con l'utilizzo della piattaforma di ateneo;
Exam: Computer-based written test in class using POLITO platform;
...
The exam consists of a written test of 150 minutes, containing multiple choice questions (24 points) and a question with open answer (6 points). During the exam, the use of books, notes or equivalent materials is not allowed.
In addition, during the teaching students will be given a report to be elaborated at home, regarding the sizing of an electric drive and the design of the its torque control scheme. The report is rated up to 30 points. The final score is calculated as the weighted arithmetic mean between the written test (80%) and the score obtained for the report (20%).
The rules of examination are described and discussed during the introductory class.
Gli studenti e le studentesse con disabilita 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'Unita Special Needs, al fine di permettere al/la docente la declinazione piu idonea in riferimento alla specifica tipologia di esame.
Exam: Computer-based written test in class using POLITO platform;
The exam consists of a quiz test of 70 minutes, containing multiple choice questions (25 points) and a three short computation (6 points). During the exam, the use of books, notes or equivalent materials is not allowed.
By default, the quiz will be done using the pc or tablet, using the Exam procedure on Moodle.
The rules of the examination are described and discussed during the introductory class.
At the end of the course, a simulation of the exam is performed in the classroom with direct contribution of the students.
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.