Impact of Synchronous Generator Deexcitation Dynamics on the Protection in Marine DC Power Distribution Networks

This article presents the characteristics of power supply protection in dc shipboard systems utilizing deexcitation a synchronous generator, which has been used to achieve breakerless scheme. From state-of-the-art analyses on and ship protection, analytical expressions short-circuit fault are introduced with consideration generator dynamics deexcitation. The rectifier based expression, is examined terms peak current (or nonrepetitive surge current) overloading capability limiting load integral) diodes. Finally, experimental tests conducted rectifier-generator system rated 10 kW 500 V dc . With test results, expression derived verified, more importantly, behaviors discussed for different resistance, dc-link capacitance, exciter response.