Basic power electronics in energy systems

• describe and calculate the concepts of efficiency, mean value and power factor
• classify converter types and pulse-width modulation
• explain crucial properties of passive and active components in relation to power converters
• determine the time course of voltages and currents for the basic converter topologies (buck, boost and buck-boost) and derivatives thereof
• derive the transfer function for both the basic topologies and derivatives thereof
• determine basic parameters in power electronics circuits based on simulations
• design transformers in galvanically separated topologies (f.x. forward, flyback, push-pull, half-bridge, full-bridge)
• determine basic parameters in switch mode circuits based on measurements on these
• calculate signals and power losses in switch-mode power circuits
• specify power converters and their components using English technical language
• clarify the operation of single-phase and three-phase pulse-width modulated inverters and pulse-width modulated rectifiers
• explain crucial features of V / Hz control of three-phase AC machines and frequency converters

Overview of power electronics
Passiv components: capacitors and inductors
Signals: RMS value and average value
Active components: diodes and MOSETs as switches
Rectifier circuits
Nonisolated converters: buck, boost and buck-boost converters
Properties, states and supporting circuits of power converters
Isolated converters: single phase tranformers, forward and flyback converters
Single- and three-phase PWM inverters and rectifiers
Modulation strategies (PWM)
Three-phase V/Hz control of AC machines
Single-/multiple-quadrant operation
Switch mode drives and audio amplifiers
Simple feedback systems

-> critical: electrical components and Ohm’s Law & Kirchhoff’s rules, such as:
Electrical circuits 1 & 2 or
Electrical Engineering & Analog Electronics or
Introducing Electronics & Circuit Theory 2 or
corresponding
-> desired: basic understanding of Maxwell’s equations, such as:
Electromagnetism or Electrophysics and Materials
-> advantageous: Signals and systems, such as:
Linear systems and signals.
(If in doubt, contact to the course responsible!)

Videos and quizzes, chat-based communication, problem solving and lab work.
Guest lectures
Mandatory exercises and mandatory group work

A number of compulsory exercises/problems are part of the course. Those are distributed throughout the semester.
E-learning: the course is ready for digital twin university & education 4.0: the theory part can be taken “self-paced” to a high extend (based on videos, quizzes and chat-based help).
The hands-on part can be organised as a camp (but either camp or as regular course – not both).

Minimum: 10.

Please be aware that this course will only be held if the required minimum number of participants is met. You will be informed 8 days before the start of the course, whether the course will be held.