Moulay Tahar Lamchich has presented his thesis in electrotechnics in September 1991 and received his third cycle degree from the Faculty of Sciences Semlalia at Marrakech. He received his PhD from the same university in July 2000. He is presently Professor-ability at the same Faculty, at the Department of Physics. His main activity is based on short-circuit mechanical effects in substation structures and his research interests have included active power filters, machine drivers, static converters, and published several technical paper in this field.