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在各个工业控制中,随着变频器的广泛应用,系统的电磁干扰日益严重,相应的抗干扰技术已经变得越来越重要。变频器系统的干扰有时能直接造成系统的硬件损坏,有时虽不能损坏系统的硬件,但常使微处理器的系统程序运行失控,导致控制失灵,从而造成设备和生产事故。要想解决首先要了解干扰的来源及传播方式,然后再针对这些干扰采取不同的措施。
In various industrial control, with the extensive application of frequency converter, the electromagnetic interference of the system becomes more and more serious, corresponding anti-interference technology has become more and more important. Inverter system interference can sometimes directly cause system hardware damage, sometimes though not damage the system hardware, but often make the microprocessor system program run out of control, resulting in control failure, resulting in equipment and production accidents. The first thing to understand is to understand the source and mode of transmission, and then take different measures against these interferences.