中高压变频器冷却方案比较和选型分析

Comparison and selection of cooling scheme for medium-high voltage frequency converter

随着电力电子器件的发展,性能优异的中高压变频器在各行各业中得到越来越广泛的应用,能否处理好变频器的散热问题是其长期稳定运行的关键。分析了中高压变频器热量产生来源,并从技术可行性、可靠性、经济性等角度对不同冷却方案的特点进行比较,并结合实际的工程案例,给出合理的变频器冷却方案选型建议,可作为工程电气设计时中高压变频器冷却方案选型参考。

With the development of power electronic device, the medium-high voltage frequency converter with excellent performance is widely applied in many kinds of industries. To deal with the heat dissipation problems well or not is the key to its long-term stable operation. The sources of heat generated in the medium-high voltage frequency converter are analyzed, and the characteristics of different cooling schemes are compared from the aspects of technical feasibility, reliability and economy etc. Combined with the actual projects, the reasonable suggestions of medium-high voltage frequency converter cooling scheme selection is put forward. It can be used in the electrical engineering design when choosing from different cooling schemes of medium-high voltage frequency converter.