Entry requirements

120 credits within Science/Technology, including basic knowledge in electric circuit theory, electronics, transform methods (spec. Fourier series) and power engineering.

Learning outcomes

After a successfully completed course the student should be able to:

• explain the static and dynamic characteristics of fundamental power semiconductor devices.
• explain the working principle of uncontrolled rectifiers and calculate the performance parameters from the average, RMS and peak values of the related circuit parameters.
• calculate harmonics in the output and input currents for rectifier operations.
• design and analyse various types of switched-mode DC converters.
• explain the control of power converters using pulse-width modulation (PWM) .
• describe the basic working principle of switch-mode inverters,
• simulate simple power electronic circuits using simulation packages like Spice or MATLAB/Simulink.
• conduct experiments with converters and compare the results with theoretical concepts and simulations..

Content

Overview of power semiconductor devices: Diodes, Thyristors, BJT, MOSFET, IGBT.

Rectifiers: Single-phase and three-phase diode rectifiers with different types of loads, Average power output, Performance parameters, Harmonic analysis.

Switch-mode DC-DC converters: Design, analysis and control of Step-down (Buck), Step-Up (Boost), Buck-Boost and Full bridge topologies, Pulse-width modulation (PWM) scheme, characteristics of controllable switches, continuous and discontinuous current mode.

Switch-mode DC-AC converters: Basic inverter concept, Sinusoidal PWM.

Instruction

Lectures and tutorials, laboratory work including simulation exercises.

Assessment

Written exam (3 credits), laboratory exercises (2 credits).