摘要
基于现有的MATLAB/Simulink模型,运用S-函数(System Function),对原IGBT/Diode模型进行改造,设计了一种新的、更加精确的IGBT导通模型,有效地解决了原模型理想导通的弊端,使仿真结果更接近实际。提出了用导通电阻来模拟IGBT导通过程的新思路,触发电压的变化能够实时反映在导通电阻的变化率上,仿真结果证实了这一理论。利用MATLAB/Simulink的封装方法对创建了自定义的IGBT模型,设计了简单的外围电路,对模型进行验证,仿真结果与原模型进行对比,效果明显。最后,用自定义IGBT模型作为开关,建立了雷电流发生电路模型。搭建了硬件测试平台,仿真结果与硬件测试结果进行对比,结果令人满意。
Based on the existing MATLAB/Simulink model,by using S-function（ System Function） to modify the existing IGBT/Diode model,we have designed a novel,more accurate IGBT turn-on model,thus effectively overcoming the difficulty in achieving ideal conduction in the original model and making simulation results more close to actual situation. In this paper,we propose a new idea for simulating IGBT conduction process through the on-resistance,and variations of the trigger voltage can be reflected on a real-time basis in the variation rate of the on-resistance. The theory is confirmed by simulation results. In the MATLAB/Simulink encapsulating method,we have created a self-defined IGBT model and designed a simple external circuit to verify the model. A comparison between the simulation result and the original model shows that the effect is obvious. Finally,using the self-defined IGBT model as a switch,we have set up a model of lighting current generating circuit,and established a hardware test platform. A comparison between the simulation result and hardware test result shows that a satisfactory result is achieved.
出处
《电气自动化》
2015年第6期56-59,共4页
Electrical Automation
