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Durham University

Department of Engineering

Staff Profile

Publication details for Dr Christopher Crabtree

Smith, C.J., Zappalá, D., Crabtree, C.J., Lapiedra, J. & Mulholland, B. (2019). Power Converter Junction Temperature Measurement using Infra-red Sensors. The Journal of Engineering 2019(17): 4452-4456.

Author(s) from Durham


Studies demonstrate that the power converter has one of the highest failure rates in a wind turbine, with a key failure driver being the power module junction temperature ( T j ). This paper details an experimental setup for simplified emulation of wind turbine conditions on a power converter with infra-red sensing of IGBT T j . Results are compared to previous simulation work for a PMSG wind turbine, with the same trend of increasing mean T j with wind speed found, and the need to use an equivalent generator reactance in highlighted. A commercial-scale prototype for more accurate wind turbine converter emulation is also detailed.