Research on reliability of power electronic converter

Reliability of power electronic converter widely used in energy transmission and conversion receives more and more attention. This paper summarizes quantitative reliability model from the view of component-level and system-level and contrasts the merits and demerits of different reliability models The mechanism of reliability improvement is analyzed by congenital and acquired reliability enhancement method. Meanwhile,the classification method of reliability enhancement is achieved. Finally,the exiting problems and future direction of power electronic converter's reliability are discussed.