1 Electrotechnic Institute 1 Electrotechnical Institute, Division of Electrotechnology and Materials Science, Poland 1 Electrotechnical Institute, Wroclaw 1 Electrotechnical Institute, Wroclaw, Poland 1 Elsaesser, O - Elsaesser,+O 1 Energoprojekt SA, Krakow, Poland 1 Engineering Consultants Group, Cairo, Egypt - Engineering, Wroclaw University of Technology, Wroclaw, Poland 1 ESIGELEC / IRSEEM- EA 4353 Rouen- France