馈能型电子负载在移动电站测试中的应用研究

摘要

The traditional load which is applied to the test of power plant has the disadvantages of huge energy consumption,huge volume,and its characteristic simulation is not flexible. Therefore,the feedback type electronic load is designed in order to solve the above problems.The paper focuses on the research of technology of load simulation,through the analysis of topological structure of electronic load to determine the range of the AC side inductance,and the hysteresis control is applied to the current control of electronic load.On this basis,when the feedback type electronic load is applied to the test of power plant,the steady-state load and the load mutation are verified by simulation and experiment.The result shows that electronic load achieves a good function of simulating load,the current and voltage are consistent with model set,and verifies that the control scheme is correct.%传统负载应用于电站测试时具有能耗高、体积大、负载特性模拟不灵活等缺点，设计了馈能型电子负载以解决上述问题。重点研究了负载模拟技术，通过分析电子负载的拓扑结构，确定了交流侧电感的取值范围，并将滞环控制应用于电子负载的电流控制中。在此基础上，对馈能型电子负载应用于电站测试时的稳态负载和负载突变进行了仿真及实验验证。研究结果表明，电子负载很好地实现了模拟负载的功能，电流和电压同所设定的模式一致，验证了控制方案的正确性。