基于iSIGHT平台的开关电源电热耦合仿真方法

发布时间：2018-01-19 23:50

本文关键词： 开关电源电热耦合高频变压器电路仿真温度仿真　出处：《电机与控制学报》2017年10期 　论文类型：期刊论文

【摘要】：为了实现开关电源性能特性的精确仿真分析,需要考虑温度与元器件之间的电热耦合效应,否则将无法准确模拟电源真实工作状态。提出一种基于i SIGHT平台的开关电源电热耦合建模与仿真分析方法。采用有限元仿真方法提取高频变压器分布参数,建立等效电路模型;分析功率半导体器件工作特性受温度的影响关系,建立肖特基二极管和功率MOSFET的电热耦合仿真模型。以某开关电源为对象,分别建立电路仿真模型和稳态热场仿真模型,采用i SIGHT对电、热仿真过程进行集成,实现电热耦合仿真数据的自动化交互。该电热耦合仿真方法提高了电、热特性的仿真精度,可精确描述开关电源的性能特性与下位特性参数的关系,为产品优化设计提供了准确有效的手段。
[Abstract]:In order to realize the accurate simulation analysis of switching power supply performance, it is necessary to consider the electrothermal coupling effect between temperature and components. Otherwise, it will not be able to accurately simulate the real working state of the power supply. The electrothermal coupling modeling and simulation analysis method of switching power supply based on SIGHT platform and the finite element simulation method are used to extract the distribution parameters of high frequency transformer. Establishing equivalent circuit model; Based on the analysis of the effect of temperature on the performance of power semiconductor devices, the electro-thermal coupling simulation model of Schottky diode and power MOSFET is established. A switching power supply is used as an object. The circuit simulation model and the steady state thermal field simulation model are established respectively. I SIGHT is used to integrate the electrical and thermal simulation process. This method improves the simulation accuracy of electrical and thermal characteristics and can accurately describe the relationship between the performance characteristics of switching power supply and the lower characteristic parameters. It provides an accurate and effective method for product optimization design.
【作者单位】：北京卫星环境工程研究所航天机电产品环境与可靠性试验技术北京市重点实验室;中国人民解放军理工大学通信工程学院;
【基金】：国防基础科研项目(JSJC2013603C021)
【分类号】：TN86
【正文快照】： 2.中国人民解放军理工大学通信工程学院,江苏南京210007)0引言由于对高功率密度、高集成、高可靠等日渐需求,功率损耗和温度分布的精确估计对开关电源的性能和稳健性优化至关重要。目前对开关电源进行的仿真分析中,很少考虑温度与功耗的耦合影响;即在稳态温度下进行的仿真分析

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