Power Electronics Laboratory I - Basics (LAB)


Course lecturer:

 Stefan Doepper , BSc MSc



 Severin Kampl , MSc

Course numberM2.08860.10.051
Course codePEL1
Semester of degree program Semester 1
Mode of delivery Presencecourse
ECTS credits5,0
Language of instruction English

Students are able to safely work in a power electronic laboratory environment. They know and obey all relevant safety regulations and precautions, in order to avoid any risk of electric shock or other injuries. To also avoid damage to lab equipment and components, they apply professional monitoring and protection measures when setting up and operating experimental circuits.
Students know and understand the static and dynamic characteristics of power semiconductor devices, as well as their transient operating and driving require­ments. They know how to perform a full electrical and thermal characterization of all relevant device properties under real operating conditions.
They have acquired practical skills in the setup and operation of basic power electronic converter circuit topologies for DC and AC conversion. They can describe and analyze their static and transient transfer characteristics under varying load conditions and are familiar with the peculiar properties of the respective circuit elements and topologies.

  • Introduction to laboratory environment and equipment, handling requirements, safety procedures and precautions, overvoltage and overcurrent protection
  • Operation and characteristics of power semiconductor devices
    - MOSFET, IGBT, BJT, SCR, pn & Schottky Diodes
    - Transient operation, switching waveforms
    - Driving requirements & basic driver circuits
    - Losses & thermal characterization, IR vs. sensor measurements
  • Operation principles of basic DC-DC converter circuits
    - Buck, Boost, Buck-Boost converters
    - Steady state operation and transfer function
    - Continuous & discontinuous operation modes
    - Voltage and current waveforms, inductor volt-second balance
    - Transient response - startup, load step, current ripple
  • Operation principles of basic transformer-coupled converters
    - Flyback, Forward, Push-Pull converters
    - Steady state operation and transfer function
    - Voltage and current waveforms, transformer reset & saturation
    - Transient response - startup, load step, open load & short circuit
  • Operation principles of basic rectifier circuits - Passive rectifiers - one-way, voltage doubler, 1- & 3-phase bridge - Active SCR rectifiers - 3-phase half wave and bridge circuits - Steady state operation, phase control - - Voltage and current waveforms, voltage ripple, filters

Course materials, data sheets, operation and safety guidelines as provided before the lab exercises (required)
Baliga B. Jayant "Fundamentals of Power Semiconductor Devices", 2nd ed., Springer, 2019
Webster, J. G., "The Measurement, Instrumentation and Sensors Handbook", Springer, 1999

Interactive laboratory exercise - use standard measurement equipment to analyze given devices and circuits, gain experience with practical measurement problems (noise, safety...), learn to obtain valid test results under realistic non-ideal conditions.

Immanent examination character:
- Written/oral exam briefings before each laboratory unit
- Participation & collaboration in practical lab exercises
- Lab reports (group work) with measurement results & interpretation