Affiliation(s)
1. College of Logistics Engineering, Shanghai Maritime Univ., Shanghai 201306, China
2. College of Electrical Engineering, Shenyang University of Technology, Liaoning 110870, Shenyang, China
ABSTRACT
System control and safety reliability are important links of the marine DC (Direct Current) power system. The
simulation model is built by Matlab/Simulink, the battery and super-capacitor are
supplied to the system through a three-phase interleaved DC/DC converter, the fuse and disconnector switch
combination are used as the protection device, and the short-circuit point is
set between each branch and the DC distribution board, performing short-circuit
simulation. This paper also proposes a short-circuit calculation method for super-capacitors based
on the simplified model of series RC (Resistors & Capacitors), and verifies
its correctness through simulation data. The results show that the introduction of a three-phase interleaved
DC/DC converter reduces the current ripple and makes the system control more
convenient; short-circuit
calculation and simulation have determined the short-circuit withstand
capability of the DC distribution board, and verified the feasibility of the fuse selection method
and the short-circuit calculation method of the super-capacitor. This provides
reliable verification for the application and calculation of the actual
project.
KEYWORDS
Matlab/simulink simulation, three-phase
interleaved DC/DC, battery and super-capacitor, short-circuit
protection and calculation.
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References