2015(6):74-77.
Abstract:
The direct current(DC) power systems consisted of diesel generator sets and rectifier are widely used as movable power devices, which can also be served as backup power in important projects or as important support for DC micro-grid. The pulse load is a kind of equipment which contains kinds of power electronics, and its power switches fast and in large range. The modern digital radar with transmitter and receiver(T/ R) modules is a typical pulse load. In the system consisted of diesel generator set, a controlled rectifier, and a pulse load, the voltage and current are in nonlinear relation. The system operation actions, which cover mechanical and electromagnetic process, are always in dynamic and difficult to be calculated by analytical algorithm. In this paper,we have built a system model based on Matlab/ Simulink, with this simulation model we have analyzed the different transient and stability index of the output voltage and frequency of the system with different modes of the pulse load. The results certify that our analysis results are similar to the practical waveform, thus the simulation model is reasonable.