摘要
对6kV, 2.5kW 高压变频器的散热系统进行了研究和设计。提出采用强迫风冷解决变频器的散热问题。在计算出系统各个功率器件发热量的基础上,根据发热量与温升之间的关系,计算出各功率开关器件所需散热器的热阻,选择了合适的散热器,并根据整个系统的发热量和散热器对气流的要求,对风机的选型以及风道的设计进行了探讨,设计了一种前进风后出风,每个散热器都与风腔独立密封连接的抽风方案。试验结果表明,该散热系统能满足运行要求。
This paper studies the design of the heat sinking in 6kV/2.5kW variable frequency drive system.Forced air cooling technology is applied in the drive system.Based on the calculation of power losses,the heat sinks are designed ac-cording to the relation between power losses and temperature rise.The scheme of air conduit is presented,which include:front air intake,sealed wind cavity and back air outtake.Each heat sink is joined into the close wind cavity separately.The experiment results show that the heat sinking is satisfied.
出处
《电力电子技术》
CSCD
北大核心
2005年第2期115-117,共3页
Power Electronics
关键词
变频器
电力半导体器件
散热器
frequency converter
power semiconductor
heat sink
