摘要
IGBT模块在现代工业技术上的应用十分广泛,研究表明结温过高是影响其安全性与可靠性的主要原因之一。为了抑制运行中IGBT模块的温升,本文运用Logistic混沌映射随机数算法,通过对DSP芯片输出的PWM波周期的随机化,探究其在IGBT模块运行时的温升抑制作用。经过实验验证,在IGBT模块结温从45℃升~53℃过程中,随机周期PWM比正常PWM方式的温升时间增多了88.8 s,表明该方式对IGBT模块的温升抑制效果良好,在现代工业技术领域中有较好的应用前景。
IGBT module is widely used in modern industrial technology.Studies have shown that excessive junction temperature is one of the main reasons affecting its safety and reliability.In order to suppress the temperature rise of IGBT module in operation,Logistic chaotic map random number algorithm is presented in this paper to explore the temperature rise suppression effect of IGBT module in operation through uniform randomization of output PWM wave period and duty cycle from DSP chip.It is verified by experiment that,Compared with the normal PWM mode,the temperature rise time of random cycle PWM increased 88.8 s,which shows that random cycle PWM has favorable effect on temperature rise suppression of IGBT module and is a befitting application prospect in the field of modern industrial technology.
作者
陈航
马家庆
王霄
CHEN Hang;MA Jiaqing;WANG Xiao(College of Electrical Engineering,Guizhou University,Guiyang 550025,China)
出处
《智能计算机与应用》
2021年第4期49-52,56,共5页
Intelligent Computer and Applications
基金
国家自然科学基金(51867006,61861007)
贵州省科技厅-贵大联合基金(黔科合LH字[2017]7229号)7224
黔科合平台人才([2017]5788)
