基于单片机的矿用电动机相敏保护的实现

Implementation of Phase-sensitive Protection of Mine-used Motor Based on Single-chip Microcomputer

大功率电动机启动时电流较大,传统的保护策略无法区分是短路电流还是正常启动电流,易产生误动。文章介绍了一种高性能的电动机启动保护策略———相敏保护,及其基于凌阳SPCE061A单片机芯片的实现过程。

When a high-power electric motor is starting, the current is heavy and the traditional protection strategy can＇t distinguish if it is a short-circuit current or the normal starting current, so the system is tend to make wrong. The paper introduced a kind of high performance protection strategy about electric motor starting-phase-sensitive protection and the realized process according to SPCE061A chip.