Course detail

# Electric Drive Systems 2

True (active, average) power calculation in typical cases existing in pulse converters, power switching semiconductors, basic principle of a semiconductor converter (based on understanding the inductance behavior), PWM application, problems of switching frequency, current ripple and switching losses. Principle of operation of DC/DC step-down converter operating in the first quadrant, DC/DC converter operating in the first and second quadrant, DC/AC one-phase converter, DC/AC three-phase converter, ways of control of these converters. Feedback control - principle, properties and function explanation of P, I and PI controllers, stability problems. Basic control algorithmsof various electric motors used in the drives of electric vehicles.

Language of instruction

English

Number of ECTS credits

6

Mode of study

Not applicable.

Entry knowledge

Knowledge of high school mathematics and university mathematics of the bachelor degree, good understanding of the geometrical interpretation of derivation, infinite integral and finite integral.

Rules for evaluation and completion of the course

Evaluation of numerical exercises - max. 30 points. Final oral exam - max. 70 points.
Numerical exercises are obligatory.

Aims

Understanding basic physical principles and mathematically described consequences usable in pulse converters. Understanding principles of operation as well as some technical details of basic DC/DC, DC/AC and AC/DC converters used in drives of electric vehicles. Understanding principles and consequences regarding feedback control systems. Understanding basic control algorithms of DC, induction, PMSM, BLDC and SRM including the possibility of the generator regime (regenerative braking).
Student can understand the problems and calculation of true power in typical cases existing in transistor converters. He can calculate power loss on a diode, MOSFET and IGBT.

Student can understand parameters of power switching semiconductors - namely power diodes, MOSFETs and IGBTs.

Student knows the function of basic DC/DC converters, he can draw voltage and current waveforms in these converters, he can calculate technical parameters, he can understand the consequences between switching frequency, switching losses and current ripple.

Student can understand the principle of operation and schematics of one-phase and three-phase converters, ways of their control and principles of sinusoidal PWM creation.

Student can understand basic principles and important consequences of feedback control, he knows exactly the properties and ways of application of P, I and PI controller in the field of an electric vehicle drive.

Student knows common control algorithms of DC, induction, synchronous and reluctance motors including their generator regime (regenerative braking).

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Veltman A., Doncker, R. W. Pulle, D. W. Fundamentals of Electrical Drives, Netherlands: Springer, 2007. ISBN 978-1-4020-5504-1 (EN)
Pyrhonen, J. Hrabovcova, V., Semken, R. S., Electrical Machine Drives Control - An Introduction, John Wiley and Sons Ltd, 2016, 9781119260455 (EN)
Sul, S-K., Control of Electric Machine Drive Systems, John Wiley & Sons Inc. 2011 , ISBN 978-0-470-59079-9 (EN)

Not applicable.

Classification of course in study plans

• Programme MPA-AEE Master's, 2. year of study, winter semester, compulsory

#### Type of course unit

Lecture

39 hours, optionally

Teacher / Lecturer

Fundamentals seminar

26 hours, optionally

Teacher / Lecturer