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EPECS'11 Keynote speakers

Keynote Speaker 1

Dr. Marian Kazmierkowski, IEEE Fellow
Warsaw University of Technology, Poland

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Presentation Title:


In recent years, because of energy problems on almost whole world, power electronics and electric machines as well as renewable energy market has been intensively developed. This talk has an objective to combine and disseminate information on power electronics foe wind and see wave energy converters. The potential of sea wave energy is very high and over one thousands patents exists, however, only projects supported by EC will be presented. At the beginning a basic terms and methods of sea wave energy capture will be discussed.  Further several most important sea wave energy conversion prototypes will be shown. The generators and power electronics solutions for Power Take Off system will be presented on the example of Wave Dragon MW sea wave energy converter. The Wave Dragon MW captures power from the sea waves by means of low-head turbines and converts it into rotating mechanical power. Problems which can appear in mechanical power to electrical power conversion in Wave Dragon MW can be expected to be similar as in wind turbine. However, subject of the mechanical energy conversion from sea waves to electrical energy is not well identified and further research should be curried out. Additionally, specific problems of grid connected AC/DC/AC converters under grid voltage distortions (harmonics and voltage dips) will be discussed. Some simulated and experimental oscillograms that illustrate properties of the presented systems will be shown.

Keynote Speaker 2

Dr. G. C. Montanari
University of Bologna, Italy

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Presentation Title:


The electrical industry is facing contradicting signals. On one side, the customer demand is increasing along with expectations about the quality of the service (less interruptions, less power quality-related problems). On the other side, there is a consensus that utilities should shrink capital and current expenditures, to deliver energy at lower costs.
These conflicting requirements can be met if equipments are used at or close to their ratings, possibly beyond their design life and with minimum maintenance: indeed a technical challenges. There is a need, therefore, for acquiring the most comprehensive information about assets that are of critical importance for the grid, i.e., to carry out what will be referred to here as global monitoring. This information, suitably processed, should be able to highlight which ones are in critical state and need actions to restore their reliability, effectiveness and safety. Furthermore, it should be able to identify particular conditions of the network causing accelerated degradation problems as, e.g., harmonic resonances and voltage dips. Eventually, this information should be available in SCADA centers to allow load flow and voltage regulation to be optimized so as to minimize, if necessary, the stress applied to apparatus in critical conditions. It is worthwhile to observe that this concept of having bidirectional information flow fully falls in the smart grid framework.
These concepts will be considered in depth in the paper, showing also some examples of global monitoring tool application.

Keynote Speaker 3

Dr. Malik Elbuluk
University of Akron, USA

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Presentation Title:


Electric motors are used in many industrial applications ranging from fans, blowers and pumps, machine tools, household appliances, power tools, and computer disk drives, to areas such transportation in automotive, aircrafts and ships among many other applications. They come in different sizes and power ratings ranging from small motors of a few milliwatts found in electric wristwatches to the very largest motors with ratings of megawatts used for propulsion of large ships and high speed trains.
The classic division of electric motors has been that of AC and DC types.  However, the ongoing trend toward power electronic control further muddles the distinction, as modern drivers have moved the commutator out of the classic DC motors and run them on AC power.  Similarly a new breed of motor drive circuits are relied upon to generate sinusoidal AC drive currents from a DC to control AC motor.   This has resulted in a revolution in the field of electric motor drives.
An electric drive system contains three major components.  These are the motor, the power electronic converter and the controller including any required sensors.  The three components have been the focus of many researchers.  The focus has been on three major motor drives: namely, the induction, the permanent magnet or brushless and the switched reluctance motors.  This seminar will present the a summary of the literature and research involving options, trends and tradeoffs on the motor, the power electronic converter the controller and sensors in each of the motor drive technologies.