摘 要:功率单元的设计是大功率风冷变频器设计极为关键的环节。本文提出一种强制风冷散热方式的单元结构,通过理论计算、热仿真软件进行仿真,得到单元内部IGBT的温度变化规律,验证该方案的可行性。理论研究和现场运行情况表明,该功率单元已经在现场稳定地运行。
关键词:功率单元;大功率;风冷;热仿真
Abstract: The design of power unit is crucially important in the high power inverter. In this paper, a structure of power unit by forced air cooling is proposed. Contour of temperature of IGBT i
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