Matlab在LC与LCL两种滤波器对比实验中的应用  

Application of Matlab in comparative experiment between LC and LCL filters

作　　者：郑嘉龙 冯黎兵 杨鸽[1] 刘一均[1] 杨珏 ZHENG Jia-long;FENG Li-bing;YANG Ge;LIU Yi-jun;YANG Jue(Department of Electric Power Engineering,Sichuan Water Conservancy Vocational College,Chengdu 611231,China)

机构地区：[1]四川水利职业技术学院电力工程系

出　　处：《实验室科学》2019年第4期31-34,共4页Laboratory Science

基　　金：四川省水利厅科研项目(项目编号:SL2017-06);四川水利职业技术学院科研项目(项目编号:KY2017-29)

摘　　要：采用高频信号控制的并网逆变器会输出大量谐波,需要对其进行有效滤波后才能接入电网。由于LC型和LCL型滤波器在实际并网逆变器中均被广泛使用,因此有必要对其进行深入研究。然而电力滤波器直接参与电能传输,会使学生在实验过程中存在较大安全风险。同时,复杂的理论推导增加了高职学生的理解和掌握难度。采用MATLAB进行仿真实验不仅能降低学生在实验过程中的安全风险,而且其强大的绘图功能有助于学生发挥形象思维的能力。通过对仿真实验结果的分析,学生可以更好地理解两种滤波器的工作原理,准确把握适用场景。The grid connected inverter with high frequency signal control will output a large number of harmonics,so it is necessary to filter effectively before accessing the power grid.As LC and LCL filters are widely used in practical grid connected inverters,it is necessary to conduct in-depth research on them.However,the power filter directly involved in power transmission will cause students to have security risks in the process of experiment.At the same time,complex theoretical deduction has increased the difficulty of understanding and mastering to higher vocational students.The use of MATLAB to carry out simulation experiments can not only reduce the safety risk of students in the process of experiment,but also its powerful drawing function can help students to play the ability of thinking in image.Through the analysis of the simulation results,students can better understand the working principles of the two filters and accurately grasp the applicable scenarios.

关 键 词：并网逆变器 仿真实验 LC滤波器 LCL滤波器 高职教育 

分 类 号：TM614[电气工程—电力系统及自动化]