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PELINCEC 2005 - Politechnika Warszawska

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Lecture and Dialogue Sessions<br />

The problems of renewable energy were presented in 4 papers<br />

during the oral session and 12 papers during the dialogue<br />

session. The lecture session (Wednesday 19th October,<br />

chaired by Wlodzimierz Koczara) was mainly devoted to<br />

the investigation of method and system conversion of energy<br />

provided by renewable sources for assuring high efficiency<br />

and high quality of the output power. One paper dealt with<br />

fuel cell (Tae-Won Lee and others South Korea). Problems<br />

of grid connection were presented in relation to DC grid<br />

(S. Sathiakumar and others, Australia) and to AC distorted<br />

grid voltage (E. Ernest and others, Poland and UK). The concept<br />

of connection of permanent magnet generator to grid via<br />

matrix converter using reverse blocking IGBT was delivered<br />

by M. Pacas (and others, Germany). Hence, the presented<br />

fields of the lecture session were related to current problems<br />

developed in world laboratories.<br />

Prof. D. Casadei and prof. W. Koczara, during the WATAB III Session.<br />

The dialog session, held on Monday, Ocober 16th and<br />

chaired by Marcian Cirstea, Patrycjusz Antoniewicz and<br />

Brtłomiej Ufnalski, covered a very wide spectrum of problems<br />

such as:<br />

• Testing of power conditioning of electrical energy using supercapacitors<br />

(Wodecki and others), (Chłodnicki and others),<br />

• Modelling and simulation of distributed generation systems<br />

(Chen and others), (Khalil and others).<br />

• Double fed induction generators (DFIG) were represented by a<br />

paper describing brushless version (Levin and others).<br />

• Photovoltaic were represented by two papers – maximum point<br />

tracking (Cavalcanti and others) and grid connection problems<br />

(Farhangi and others)<br />

• Diagnosis of wind generation sets was represented by one pa-<br />

per (Jarzyna)<br />

• Island operation of synchronous and induction generators simu-<br />

Working Group 5 — Renewable Energy<br />

lation was provided by one paper (Serban and others).<br />

Laboratory Tour – Division of Electrical Drives<br />

The laboratory tours included a visit to research area (PhD,<br />

MSc thesis and other projects) followed by a trip to the didactic<br />

laboratory facilities. Professor W. Koczara presented projects<br />

and laboratory stands developed under his supervision:<br />

• Design of 40MHz and 200MHz DSP systems based on<br />

Shark processors and FPGA (project demonstarted by<br />

PhD students, Mr Bartłomiej Kamiński and Mr Artur<br />

Krasnodębski)<br />

• Investigation of method of current reduction of very high<br />

power induction motor - case transferring from converter<br />

control to grid connection - using simulation software<br />

PSIM. (Project demonstrated by PhD student Mr Marcin<br />

Grzeczkowicz)<br />

• Direct Voltage Control method of autonomous operation<br />

variable speed doubly fed induction generator producing<br />

three phase sinusoidal voltage. (Operation demonstrated<br />

by Dr Grzegorz Iwański)<br />

• Three phase four wires neutral point clamped DC/AC<br />

400Hz converter with low frequency switching and high<br />

quality output voltage (operation demonstrated by a PhD<br />

student Mr Bartłomiej Kamiński)<br />

• Deadbeat controller using hardware based FPGA for<br />

DC/AC sinusoidal voltage converters (operation presented<br />

by PhD students – Mr Bartłomiej Kamiński and<br />

Mr Maciej Borkowski)<br />

• Variability supply power reduction using reversible converter<br />

and supercapacitor energy storage. (operation<br />

presented by PhD student Mr. Grzegorz Wodecki)<br />

• Power conditioning of the variable speed generation<br />

system based on axial flux PMG using capacitive energy<br />

storage bank (operation presented by PhD student Mr.<br />

Zdzisław Chłodnicki)<br />

• Sensorless starting of the permanent magnet axial flux<br />

motor using PIPCRM method (operation presented by<br />

PhD student Mr. Piotr Jakubowski).<br />

In the second part of the Electrical Drive Division it was presented<br />

laboratory facilities for undergraduate and graduate<br />

as: basic problems of power electronic drives, automatic<br />

control of drives, power quality, PLC application for industrial<br />

process control and intelligent building equipment and control<br />

systems. The possibility of operating the “Fixed frequency<br />

single phase variable speed generator driven by Diesel<br />

engine” caused a great interest of the visitors. It is a laboratory<br />

stand for research and didactic purpose – the system<br />

is equipped in full visualised monitoring of 7kVA genset.<br />

Włodzimierz Koczara<br />

Autumn <strong>2005</strong> <strong>PELINCEC</strong> Newsletter, No.9 7

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