Publication Detail

Structure and Analysis of the Z-Source MVDC Breaker

Keith A Corzine, Robert W Ashton
5 pp.

The medium-voltage dc (MVDC) architecture shows potential for future ship power systems. Components of the MVDC system are fairly well established; with the exception of circuit breakers. The main problem with the breakers in dc systems is the absence of a zero crossing in the current needed to extinguish an interrupting arc. Options for breakers in MVDC systems include over-sizing traditional ac breakers, hybrid mechanical/semiconductor breakers, and solid-state breakers. The recently introduced z-source breaker is most similar to the solid-state breaker, but has the additional feature of automatically responding to faults quickly and without the need for fault detection. Furthermore, the z-source breaker isolates the generation source from the fault current. This paper presents detailed analysis of the z-source breaker as well as variations on the topological structure. The various breaker options are validated through detailed simulation.

type: Workshops, proceedings, symposia

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Parent Project

Project No.: 2008-ESRDC-01-LEV
Title: Electric Ship Research and Development Consortium (ESRDC)