Johann Walter Kolar: Catalogue data in Autumn Semester 2022 |  |
| Name | Prof. Dr. Johann Walter Kolar |
| Name variants | Johann W. Kolar Johann Kolar |
| Field | Leistungselektronik |
| Address | Leistungselektronik/Kolar ETH Zürich, ETL H 22 Physikstrasse 3 8092 Zürich SWITZERLAND |
| Telephone | +41 44 632 28 34 |
| Fax | +41 44 632 12 12 |
| kolar@lem.ee.ethz.ch | |
| Department | Information Technology and Electrical Engineering |
| Relationship | Full Professor |
| Number | Title | ECTS | Hours | Lecturers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 227-0113-00L | Power Electronics  | 6 credits | 4G | J. W. Kolar | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Abstract | Fields of application of power electronic converters; basic concept of switch-mode voltage and current conversion; derivation of circuit structures of non-isolated and isolated DC/DC converters, AC/DC- and DC/AC converter structures; analysis procedure and analysis of the operating behaviour and operating range; design criteria and design of main power components. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Objective | Fields of application of power electronic converters; basic concept of switch-mode voltage and current conversion; derivation of circuit structures of non-isolated and isolated DC/DC converters, AC/DC- and DC/AC converter structures; analysis procedure and analysis of the operating behaviour and operating range; design criteria and design of main power components. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Content | Fields of application and application examples of power electronic converters, basic concept of switch-mode voltage and current conversion, pulse-width modulation (PWM); derivation and operating modes (continuous and discontinuous current mode) of DC/DC converter topologies, buck / boost / buck-boost converter; extension to DC/AC conversion using differences of unipolar output voltages varying over time; single-phase diode rectifier; boost-type PWM rectifier featuring sinusoidal input current; tolerance band AC current control and cascaded output voltage control with inner constant switching frequency current control; local and global averaging of switching frequency discontinuous quantities for calculation of component stresses; three-phase AC/DC conversion, center-tap rectifier with impressed output current, thyristor function, thyristor center-tap and full-bridge converter, rectifier and inverter operation, control angle and recovery time, inverter operation limit; basics of inductors and single-phase transformers, design based on scaling laws; Isolated DCDC converter, flyback and forward converter, single-switch and two-switch circuit; single-phase DC/AC conversion, four-quadrant converter, unipolar and bipolar modulation, fundamental frequency model of AC-side operating behaviour; three-phase DC/AC converter with star-connected three-phase load, zero sequence (common-mode) and current forming differential-mode output voltage components, fundamental frequency modulation and PWM with singe triangular carrier and individual carrier signals of the phases. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Lecture notes | Lecture notes and associated exercises including correct answers, simulation program for interactive self-learning including visualization/animation features. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prerequisites / Notice | Prerequisites: Basic knowledge of electrical engineering / electric circuit analysis and signal theory. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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