This paper deals with the lifetime estimation of one modular multilevel converter submodule in a bidirectional point-to-point HVDC application. A mission profile of a reversible link is considered, then power losses are calculated and an electro-thermal simulation is carried out. Finally, a rain flow counting method is used for organizing thermal profiles and the life consumption is computed thanks to a new extrapolation method of aging data coming from manufacturer and the application of the Miner’s rule.
Diego Velazco, Guy Clerc, Emmanuel Boutleux, François Wallart, Laurent Chédot
Presented at EPE’20 ECCE Europe