摘要：本文介绍了IPC-PF-1s回馈制动单元应用于离心机变频调速控制系统的基本情况。关键词： 变频器 能量反馈 制动单元 节能Abstract: This article introduces the basic application of IPC-PF-1s power feedback braking unit in the variable-frequency controled system of centrifugal machine。Key words: in