| Abstract |
This paper investigates the design principles of a solid-state circuit breaker (SS CB) for medium voltagedirect current (MVDC) grids. The emphasis is given on the design of the required active and passivecomponents that employed in a SS DCCB based on analytic methodology. Several cases related tothe characteristics of the current technology of power semiconductor devices have been investigated andevaluated in terms of maximum short-circuit current, maximum switch current, maximum switch voltage,clearance time, as well as, passive elements requirements. It has been shown that potential improvementsof the current power semiconductor technology could lead to improved performance of SS DCCB withlower requirements for passive elements. In particular, the most significant characteristic that improvesthe overall SS breaker performance was found to be a potential reduce of the falling time (or increase ofpower dissipation) of the switches used in SS breaker. |
