Florian Krismer: Catalogue data in Autumn Semester 2022 |
| Name | Dr. Florian Krismer |
| Address | Professur Hochleistungselektronik ETH Zürich, ETL F 12 Physikstrasse 3 8092 Zürich SWITZERLAND |
| Telephone | +41 44 632 60 53 |
| krismer@hpe.ee.ethz.ch | |
| Department | Information Technology and Electrical Engineering |
| Relationship | Lecturer |
| Number | Title | ECTS | Hours | Lecturers | |
|---|---|---|---|---|---|
| 227-0247-00L | Power Electronic Systems I  | 6 credits | 4G | J. Biela, F. Krismer | |
| Abstract | Basics of the switching behavior, gate drive and snubber circuits of power semiconductors are discussed. Soft-switching and resonant DC/DC converters are analyzed in detail and high frequency loss mechanisms of magnetic components are explained. Space vector modulation of three-phase inverters is introduced and the main power components are designed for typical industry applications. | ||||
| Learning objective | Detailed understanding of the principle of operation and modulation of advanced power electronics converter systems, especially of zero voltage switching and zero current switching non-isolated and isolated DC/DC converter systems and three-phase voltage DC link inverter systems. Furthermore, the course should convey knowledge on the switching frequency related losses of power semiconductors and inductive power components and introduce the concept of space vector calculus which provides a basis for the comprehensive discussion of three-phase PWM converters systems in the lecture Power Electronic Systems II. | ||||
| Content | Basics of the switching behavior and gate drive circuits of power semiconductor devices and auxiliary circuits for minimizing the switching losses are explained. Furthermore, zero voltage switching, zero current switching, and resonant DC/DC converters are discussed in detail; the operating behavior of isolated full-bridge DC/DC converters is detailed for different secondary side rectifier topologies; high frequency loss mechanisms of magnetic components of converter circuits are explained and approximate calculation methods are presented; the concept of space vector calculus for analyzing three-phase systems is introduced; finally, phase-oriented and space vector modulation of three-phase inverter systems are discussed related to voltage DC link inverter systems and the design of the main power components based on analytical calculations is explained. | ||||
| Lecture notes | Lecture notes and associated exercises including correct answers. | ||||
| Prerequisites / Notice | Prerequisites: Introductory course on power electronics is recommended. | ||||
| 227-0567-00L | Design of Power Electronic Systems | 6 credits | 4G | F. Krismer | |
| Abstract | Complete design process: from given specifications to a complete power electronic system; selection / design of suitable passive power components; static and dynamic properties of power semiconductors; optimized EMI filter design; heat sink optimization; additional circuitry, e.g. gate driver; system optimization. | ||||
| Learning objective | Basic knowledge of design and optimization of a power electronic system; furthermore, lecture and exercises thoroughly discuss key subjects of power electronics that are important with respect to a practical realization, e.g. how to select suitable power components, to understand switching operations, calculation of high frequency losses, EMI filter design and realization, thermal considerations. | ||||
| Content | Complete design process: from given specifications to a complete power electronic system. Selection and / or design of suitable passive power components: specific properties, parasitic components, tolerances, high frequency losses, thermal considerations, reliability. Static and dynamic characteristics of power semiconductors. Optimized design of the EMI filter. Thermal characterization of the converter, optimized heat sink design. Additional circuitry: gate driver, measurement, control. Converter start up: typical sequence of events, circuitry required. Overall system optimization: identifying couplings between different components of the considered power electronic system, optimization targets and issues. | ||||
| Lecture notes | Lecture notes and complementary exercises including correct answers. | ||||
| Prerequisites / Notice | Prerequisites: Introductory course on power electronics. | ||||