University of Malta

Study-Unit Description
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TITLE Power Electronics 2

LEVEL 03 - Years 2, 3, 4 in Modular Undergraduate Course


DEPARTMENT Industrial Electrical Power Conversion

- Single phase and three phase
- Half bridge and full bridge
- Sinusoidal PWM voltage output
- Switching harmonics
- PWM generation logic

Resonant Converters
- Switch Resonant Circuits
- Load Resonant Converters (SRSL, SRPL)

Power Quality of Rectifier Circuits
- Input Current Harmonics of Single Phase Rectifiers
- Three Phase Uncontrolled and Controlled Rectifiers
- Multiphase Rectifiers

Study-unit Aims:

To learn about modern industrial power electronics converters and their control. An introduction to Power Quality Factors and standards and the effect of Non-Linear Power electronic loads on electrical distribution harmonics.

Learning Outcomes:

1. Knowledge & Understanding:
By the end of the study-unit the student will be able to:

- Explain operation of inverter circuits: square-wave, quasi-square-wave and pulse-width modulated inverters and associated control logic;
- Understand ac output and dc link switching harmonics associated with inverter circuits;
- Understand motivation for resonant switching and resonant converter circuits;
- Explain operation of basic zero-voltage switching circuit and analyse SRSL and SRPL resonant converters;
- Explain harmonic and distortion effects of rectifier circuits.

2. Skills:
By the end of the study-unit the student will be able to:

- Predict harmonic effects at ac output of inverter circuits and select suitable switching frequency and switching devices to reduce filter component sizes;
- Perform calculations related to resonant converters based on Fundamental Mode Approximation;
- Determine compliance of rectifier circuits with harmonic emission regulations.

Main Text/s and any supplementary readings:

- Mohan, Undeland, Robins, "Power Electronics Converters, Application, and Design".

ADDITIONAL NOTES Pre-requisite Study-unit: EPC2201

STUDY-UNIT TYPE Lecture, Practicum & Tutorial

Assessment Component/s Resit Availability Weighting
Practical No 20%
Examination (2 Hours) Yes 80%

LECTURER/S Maurice Apap
Cyril Spiteri Staines

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the study-unit description above applies to the academic year 2017/8, if study-unit is available during this academic year, and may be subject to change in subsequent years.

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