Power Control Systems

Recommended Prerequisites

Steady-state analysis of electrical circuits; Power Electronics.

Teaching Methods

Theoretical classes, using audiovisual aids, with detailed presentation of the concepts, principles and fundamental theories. Lectures for solving practical exercises that allow the consolidation of concepts that require a combination of different theoretical principles and promote critical thinking about the operation of different energy converters.

Laboratory classes with implementation of experimental works based on hardware modules, including treatment and interpretation of results. Accomplishment of a small hardware or software project with report delivery is also implemented.

Learning Outcomes

The aim of this course is to give students some skills about the harmonic pollution in power systems and how to minimize the problems generated by this pollution through the use of some technical solutions.

Power filter-based solutions are analysed (passive and active filters) as well as power conditioners (FACTS). Power electronic systems used in renewable energy sources (wind and solar energy) are also presented and its operation analysed in order to study their impact on power quality.

During the course some energy sources that allow feed the loads with a reduced voltage harmonic content are also studied, such as uninterruptible power supply and switching power supply. The final chapter of this course addresses some practical issues related to the control and protection circuits for the semiconductor switches.

Work Placement(s)

No

Syllabus

1. Introduction to Power Quality: Classification of Power Quality Issues; Formulations and Measures Used for Power Quality

2. Power electronics for renewable energy systems

a. Converters used in renewable energy systems: Impact of Power Electronics on Energy Systems

3. Solutions for Harmonic Elimination: Classification  and selection considerations of Power Filters; Passive and active power filters

4. Flexible AC Transmission System (FACTS): Classification of FACTS; Power electronic converters used and main operating characteristics

5. Uninterruptible power supplies (UPS): Classification of UPS; Static and hybrid converters

6. Switch-mode dc power supplies: Applications and main operating characteristics; Need for Electrical Isolations

7. Practical Converter Design Considerations: Gate and base drive circuits; Overcurrent and Overvoltage protections

Head Lecturer(s)

André Manuel dos Santos Mendes

Assessment Methods

Assessment 1
Project: 50.0%
Frequency: 50.0%

Assessment 2
Exam: 50.0%
Project: 50.0%

Bibliography

1. “Power system harmonics and passive filter design”, J. C. Das, IEEE Press-Wiley, 2015.

2. “Power theories for improved power quality”, Grzegorz Benysek, Marian Pasko, Springer, 2015.