Found 12 relevant results in 0.75s where lecturer="Johann Walter Kolar"
Electrical Engineering II
Elektrotechnik II
Signals and systems in the time and frequency domain, principle of operation and design of basic analog and digital circuits, analog-digital conversion. Basic power electronic circuits, design of magnetic components and concept of force and torque generation, electromechanical energy conversion, principle of operation and characteristics of stationary and selected rotating electrical machines.
Laboratory I
Fachpraktikum I
The Laboratory courses in the 5th and 6th semesters enable the students to put the the contents of the courses from the four first semesters to the test and to consolidate the aquired knowledge. Furthermore students have the possibilty to gain specific knowledge in certain software packages as MATLAB.
Laboratory II
Fachpraktikum II
The Laboratory courses in the 5th and 6th semesters enable the students to put the the contents of the courses from the four first semesters to the test and to consolidate the aquired knowledge. Furthermore students have the possibilty to gain specific knowledge in certain software packages as MATLAB.
Mechatronic Seminar
Mechatronik Seminar
Interdepartmental (D-MAVT, D-ITET, D-PHYS) seminar series on Mechatronics and Microsystems, focusing on a new specific scope (field of research) each semester.Speakers from industry and research with an excellent international reputation in their field are invited for presentation and discussion.For a detailed program, please refer towww.mechatronics.ethz.ch
Networks and Circuits I
Netzwerke und Schaltungen I
Foundations of electrical engineering: stationary electric and magnetic fields, basic elements of electric circuits, direct current (DC) circuits, and electromagnetic induction.
Networks and Circuits II
Netzwerke und Schaltungen II
Introduction to AC circuits analysis, Fourier analysis, frequency and time domain, step response of electric circuits, Fourier and Laplace transform, frequency response of electric networks, two-port systems, differential amplifier, operational amplifier, basic and advanced operational amplifier circuits
Networks and Circuits Laboratory
Netzwerke und Schaltungen Praktikum
Concepts from the lectures "Networks and Circuits I and II" explored through experiments, with inductive energy transmission systems (equivalent circuit parameters, transmission characteristics, resonance compensation, high-voltage generation) and photovoltaics (solar module characteristics, power flow adjustment with DC-DC converters, electro-mechanical energy conversion) used as examples.
Basics of the switching behaviour, gate drive and snubber circuits of power semiconductors are discussed. Soft-switching concepts, resonant operation of non-isolated as well as soft switching of isolated DC/DC converters are analysed in detail. Finally, the space vector modulation of three-phase inverters is introduced and the main power components are designed for typical industry applications.
The course presents control oriented modelling of modern power electronic systems for controlling power electronic circuits. Furthermore, modern concepts and the operation of high switching frequency 3-phase AC/DC converters (& AC/AC matrix inverters) are presented. Exercises using also simulation tools as e.g. PLECS are used to consolidate the concepts discussed.
Power Electronics
Leistungselektronik
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.
Overview of Mechatronics topics and study subjects. Identification of minimum 10 pertinent refereed articles or works in the literature in consultation with supervisor or instructor. After 4 weeks, submission of a 2-page proposal outlining the value, state-of-the art and study plan based on these articles. After feedback on the substance and technical writing by the instructor, project commences.