王路波（天俱时工程科技集团有限公司，石家庄市 050000）

Several Thoughts on Air‑cooling System of Common Low‑voltage Variable‑frequency Motor

WANG Lubo（Tianjushi Engineering Technology Group Co.,Ltd.,Shijiazhuang 050000，China）

Abstract：Engineering cases are combined and the power distribution,control and so on of cooling fans of common low‑voltage variable‑frequency motors are analyzed and discussed to study the control schemes suitable for such fans under different operating conditions.

Key words：variable‑frequency motor;cooling fan;cooling mode;control mode;interlock control;temperature control;fault;heat dissipation

摘　要：结合工程实例，就常用低压变频电机冷却风机的配电、控制等展开分析和探讨，研究不同使用条件下低压变频电机冷却风机宜采用的控制方案。

关键词：变频电机;冷却风机; 冷却方式；控制方式；联锁控制;温度控制;故障;散热

中图分类号：TM301.2　　　      文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2021.04.003