应用于电源测试的馈能型电子负载仿真研究

Simulation research on energy recycling electronic load for power supply testing

基于电力电子变换器建立了馈能型直流电子负载模型,用于低压、大电流电源设备的测试,并利用Routh稳定判据对模型进行了稳定性分析。在Matlab/Simulink仿真环境下搭建了系统的仿真模型,利用S函数实现了对输入电流的恒流控制,并针对不同的直流母线电容值进行了仿真研究。仿真结果验证了系统设计的正确性与可行性,为实际电子负载系统的设计提供了参照和依据。

The model of energy recycling DC electronic load based on power electronics converter was presented in this paper.The designed electronic load was used for low-voltage,high-current power supply testing.The stability of the mathematical model was analyzed using Routh criterion.The simulation model was created in Matlab/Simulink,and the constant control of input current was realized by S-function.According to different DC bus capacitance,the simulation result verified the correctness and feasibility of the proposed model,and provided a reference and basis for designing the electronic load system.