Wear-out failure analysis of solar optiverter operating with 60- and 72-cell Si crystalline PV modulesLiivik, Liisa; Chub, Andrii; Sangwongwanich, Ariya; Shen, Yanfeng; Vinnikov, Dmitri; Blaabjerg, FredeIECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society : proceedings2018 / p. 6134-6140 : ill https://doi.org/10.1109/IECON.2018.8592925