91340 - Advanced Electric Drives M

Learning outcomes

The course aims to provide a deep knowledge on the vector control of AC electric motors. At first, starting from dynamic equation, a control model on d-q axes of the following AC machines will be obtained: AC and DC Brushless Motor; Induction Motor; Synchronous Reluctance Motor; IPM Motor Using modern simulation methods based on Matlab/Simulink tools participants will learn how to design the main control architecture scheme for torque/velocity and position including the effect of torque disturbance as well.

Course contents

Electromechanical energy conversion: Energy and Coenergy. Determination of force / torque delivered by an electric actuator. (ECTS 0,8; 8h )

Operating principle of the DC machine, permanent magnet and wound stator construction. Equivalent circuit and dynamic model. Mechanical characteristic, constant torque and constant power operating area. Torque and speed control. (ECTS 1; 10h )

Structure and operating principle of synchronous machines with or without permanent magnets. Stationary and dynamic models. Fields of application and comparison with the DC drives. (ECTS 1,5; 15h )

Structure and operating principle of the induction machine. Stationary and dynamic models. (ECTS 0,5; 5h)

Optimal control of electrical machines: MTPA, FW and MTPV trajectories, with special focus on the wound field synchronous machine (ECTS 1; 10h ).

Simscape modeling and simulation of torque and speed control (ECTS 1,2; 12h)

Readings/Bibliography

On the TEAMS of the course (in compliance with copyright)
- The notes used by the professor during the lectures and numerical exercises
- the slides of the lessons
- The mathematical models introduced for numerical modeling and computer simulation with Matlab / Simulink

Not strictly necessary, in case of interest:

A. E. Fitzgerald , C. Jr. Kingsley , A. Kusko: "Electric machinery", McGraw-Hill Education, 2012.

A. Emadi, “Advanced Electric Drive Vehicles (Energy, Power
Electronics, and Machines)”, CRC Press; 1st edition (2014).

N. Mohan, T. M. Undeland, W. P. Robbins: “Power Electronics: Converters, Applications and Design”, John Wiley & Sons Inc;

Teaching methods

The course is delivered in English and includes face-to-face lectures (theory and calculations) with connection also in streaming for students who follow from home via the "Teams" platform.
The lessons are carried out with the aid of multimedia systems and can also involve practical exercises in which students are divided in small groups and utilize software for the simulation of hybrid and electric traction systems (Matlab / Simulink), solve problems and discuss the results among themselves and with the teacher.

In addition, professors receive students by appointment for clarification and personalized tutoring.

The teaching material will be made available at the end of each lesson through the “Teams” platform.
Mathematical models will be used for numerical modeling and computer simulation with Matlab / Simulink

Assessment methods

The exam will take place at the end of the course according to the official exam session calendar.
The examination is composed of a practical project and an oral discussion:
1: Application project with the drafting of a report or presentation on the following topics:
a) the simulation and design of an electric / hybrid vehicle.
b) the simulation and design of an electrical machine.
The deliverable report on the activity carried out, including simulation and/or experimental results will be graded.
The evaluation of the project is expressed out of thirty (a score greater than 30 results in obtaining a grade: 30 with honors).
2: an oral exam aimed at verifying the knowledge of the course contents. The oral exam consists in the discussion of the project activity carried out and 1 or 2 questions regarding the topics of the course. The oral exam will last approximately 40 minutes.
The evaluation indicators are:
- Ability to use knowledge (25%)
- Ability to connect knowledge (25%);
- Mastery of technical language (15%);
- Ability to discuss topics (20%)
- Ability to deepen the topics (15%)
The evaluation of the oral exam is expressed out of thirty (a score greater than 30 leads to obtaining the grade: 30 cum laude).
To pass the exam both tests (application project and oral exam) must be sufficient (exceed the threshold value of 18/30). The final grade is the average of the marks obtained in the two tests, a score greater than 30 leads to obtaining the grade: 30 with honors.
The grade will be determined and communicated at the end of the oral exam.

Teaching tools

Simulation tools: Matlab; Simulink, Simscape.

Motor Catalogs.

Slides.

Office hours

See the website of Giovanni Franceschini

See the website of Stefano Nuzzo