current in ship power grids based on TMS320F2812

YANG Shi-rong

（China Ship Development and Design Center，Wuhan 430064，China）

Abstract：Aiming at the high-rate and large-amplitude of the short current in DC voltage-variation grid of ship，a short-fault detection algorithm with rate of current rise and amplitude of short current were researched. A design scheme of wave-recording software which is used in wave-measurement and recording of short current in DC voltage-variation grid of ship was presented. And the software should run on TMS320F2812 DSP platform. The engineering implementation method and the workflow and communication protocol of the waverecording

software were highlighted. The performance of the wave-recording software was tested by using a pulsed power generator test circuit. The results indicate that the wave-recording software can realize the automatic detection of short fault current and record the whole process of current waveform. It can also provide important data for the accident analysis of ship power grid.

Key words：short current；wave-recording；DC voltage-variation grid；software；TMS320F2812