Research of Pure Electric Ferry System and Its Short-Circuit Protection and Calculation

• 作者: Xiusong Yan Zechao Xu Xingyu Yao Ning Wang
• 来源期刊: 能源与动力工程:英文版
• 学科: 工学
• 关键词: Matlab/simulink simulation three-phase interleaved DC/DC battery and super-capacitor short-circuit protection and calculation
• 年，卷（期）: nyydlgcywb_2021,（1）
• 页码范围: 8-15
• 页数: 8页
• 分类号: TP3

摘要

System control and safety reliability are important links of the marine DC (Direct Current) power system. The simulationmodel is built by Matlab/Simulink, the battery and super-capacitor are supplied to the system through a three-phase interleaved DC/DCconverter, the fuse and disconnector switch combination are used as the protection device, and the short-circuit point is set betweeneach branch and the DC distribution board, performing short-circuit simulation. This paper also proposes a short-circuit calculationmethod for super-capacitors based on the simplified model of series RC (Resistors & Capacitors), and verifies its correctness throughsimulation data. The results show that the introduction of a three-phase interleaved DC/DC converter reduces the current ripple andmakes the system control more convenient;short-circuit calculation and simulation have determined the short-circuit withstandcapability of the DC distribution board, and verified the feasibility of the fuse selection method and the short-circuit calculation methodof the super-capacitor. This provides reliable verification for the application and calculation of the actual project.