柴油发电机组-整流器供电系统是重要的移动装备电源形式,可作为重要工程的备用电源,也可作为直流微电网的重要支撑电源。脉冲负载集成了大量电力电子器件,是一类功率波动明显且切换频繁的负载形式,以含大功率收发组件的数字式雷达为代表。在脉冲负载工作过程中,线路中电流与电压呈强烈非线性,系统动态过程复杂,难以运用解析方法表示柴油发电机组内部的机电过渡过程与电磁暂态。文中建立了基于Matlab/ Simulink 的系统模型,分析了脉冲负载在不同工作模式时,柴油发电机组输出电压与频率的瞬态和稳态指标,结果表明:该模型能够较真实地反映柴油发电机组-整流器-脉冲负载系统的运行行为。

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.