双速电机在制冷压缩机中的应用研究  

Application of dual speed motor to refrigeration compressor

作　　者：王武超 Wang Wuchao(Trane Technologies Engineering&Technology Center Asia Pacific)

机构地区：[1]特灵科技亚太研发中心

出　　处：《制冷与空调》2022年第12期90-93,98,共5页Refrigeration and Air-Conditioning

摘　　要：双速电机应用于螺杆式压缩机时可以提高部分负荷性能,并能够达到与变频电机类似的效果,但会带来压缩机高低转速切换时电流冲击和压缩机异常振动的问题。本文分析解决此问题的几种方法,包括直接延时启动、软启动和自耦变压启动。结果表明:对于大功率压缩机或需要低冲击电流的场合,很难找到一种经济、有效的方法;对于冲击电流本身较小的小功率压缩机,可以直接采用双速电机。Dual speed motor applied to screw compressor can improve the part load performance and reach similar effect of variable frequency motor, but current inrush and abnormal vibration of compressor may happen when compressor switches speed. A few solutions to address those issues are analyzed, including direct delayed start, soft start and auto transformer start. The results show that it is hard to find an economic and effective solution for high-power compressor or the occasion of low inrush current. For the low-power compressor with small inrush current, the dual speed motor can be directly applied.

关 键 词：制冷压缩机 螺杆式压缩机 双速电机 软启动 自耦变压启动 

分 类 号：TH4[机械工程—机械制造及自动化]