Title: ADVANCED POWER ELECTRONICS APPLICATIONS IN POWER SYSTEMS
Aims & Objectives:
To introduce the concepts of power electronics based conversion and the design requirements for current sources and voltage sources and its interconnection. Interconnection of power electronic sources to power systems and its control and topologies that enable different applications;
To analyse functional requirements for power converters interconnected to power systems. To know topologies and technologies supporting development of power converters interconnected to power systems. Topology, principle of operation, modelling of power converters interconnected to power systems, namely FACTS devices and their application to improve operation condition of system, either the system stability or quality parameters.
To analyse methods and algorithms of control of power electronics based converters applied as elements of the power systems within scope of different applications.
To discuss and analyse the usage of multiple power electronics converters/devices in a PS: Optimal allocation, coordination and robustness of operation;
To assess the application of power electronics devices in Power Systems as elements contributing to the Power Systems performance.
Students will be encouraged to apply methodologies and knowledge acquired in some most common applications working out them as case studies, stimulating an integration of developed knowledge and analysis skills into previous knowledge in the fields of measurements, control and dynamics, and power systems.
Brief description of the module:
Introduction to Power Electronics Energy Conversion, Fundaments of measurement of energy quality parameters, Power flow control in DC/DC and DC/AC converters; The dynamic characteristics and control requirements of power electronics systems face to power systems identical characteristics of the power systems. Design of power converters and control methodologies for some of the most common applications, stability control and harmonic content control and renewable energy generation. Analysis of operation of power systems incorporating distributed power electronics converters. Analysis of criteria to decide the application of PE devices.
Lecture hours: 15
Tutorial hours: 6
Laboratory/Coursework hours: 9
Knowledge and understanding
1. to identify and analyse the functional blocks of a power electronics
2. to understand it as Power System(PS) device;to understand
the role of controlling reactive and active power flow as elements
of PS for PE devices;
3. to know principles of operation and models of PE devices;
4. to understand the operation of PS integrating PE devices;
5. to analyse the behaviour of PSs with a distributed architecture
allocating several and different PE devices.
1. to design a PE device as a PS element;
2. to analyse the behaviour of a PE device as a FACTS device;
3. to develop a model for PE devices either for steady-state
regimens or transient ones;
4. to analyse PS behaviour in a well-known simulation environment;
5. to evaluate robustness and controllability of PS including PE
devices as FACTS devices;
6. to assess the integration of FACTS devices into the PS;
Introduction to Power Electronics Energy Conversion; Current and voltage sources (2);
Fundaments of measurement methods related to energy quality (1);
Reactive and active power flow control in DC/DC and DC/AC converters (4);
Dynamic characteristics and control requirements of power electronics systems faced to power systems identical characteristics of the power systems (2);
Design of power converters and control methodologies for some of the most common applications(1);
Stability control and harmonic content control in Power Systems (2);
Analysis of operation of power systems incorporating distributed power electronics converters (2);
Analysis of criteria to decide the application of PE devices into PSs (1);
Coursework (including word length and relative weighting):
Nine hours of computer based laboratory work. A formal report is pre-requisite for the exam.
The course work contributes 30% to the final module mark.
Examinations (including examination length, number of questions and relative weighting):
There is a 2 1/2 hour written exam with 5 questions out of which students should attempt 4. The exam contributes 70% to the final module mark.
Directed reading (state if material provided):
Power Electronics Handbook, Muhammad H. Rashid ; ACADEMIC PRESS, 2006;
Improvement in the Quality of Delivery of Electrical Energy using Power Electronics Systems
Series: Power Systems , Benysek, Grzegorz, Springer ed.
Power Quality Enhancement Using Custom Power Devices , Arindam Ghosh and Gerard Ledwich,2002, Kluwer Academic Pub.
Flexible AC Transmission Systems (FACTS), edited by Yong Hua Song & Allan T Johns, Power and Energy Series 30, IET
Module leader: Prof. Adriano Carvalho
Other staff: Prof. Armando Araújo
Prof. António Martins
Date of last revision:
20 June 2008