Comparative Investigation of Losses in a Reduced Matrix Converter for Off-Shore Wind Turbines

This paper presents an analysis of losses of a high frequency link located inside the nacelle of wind turbines that will allow series connection offshore. The conversion system is based on a reduced matrix converter operated as a voltage source. Reverse blocking IGBTs are required for the operation and at the same time allowed for reduction of losses. Two carrier based switching strategies and a modified space vector modulation are implemented and discussed. Losses are calculated analytically and by simulation. A behavioral switching model of each IGBT is used. Results are conclusive about the superior performance of the proposed topology from the point of view of the losses. (4 pages)