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随着电子元器件质量和可靠性的大幅度提高,同步发电机及同步电动机静止晶闸管励磁装置得到广泛的应用。由于电力电子产品的工作条件比较“艰苦”,因而故障的发生率相应地也会增多,本人根据多年来工作经验,针对同步电动机晶闸管励磁装置的常见故障和快速检修归类作如下简述,供同行参考。 1.励磁波动幅度较大、且不稳定 运行中的电动机由于转子在交变磁场中运转,同时,受负荷变化的影响,励磁表计有轻微的抖动是正常的,但当摆动幅度较大时则属于故障。应检查:
With the substantial increase in the quality and reliability of electronic components, synchronous generator and synchronous motor stationary thyristor excitation devices are widely used. As the working conditions of power electronic products more “difficult”, and thus the incidence of failure will increase accordingly, based on my years of work experience, synchronous motor thyristor excitation of the common failures and quick maintenance classified as follows for Peer reference. 1. Larger field excitation excitation and unstable operation of the motor due to the rotor in the alternating magnetic field operation, at the same time, subject to load changes, the excitation meter has a slight jitter is normal, but when the swing amplitude is large It is a fault. Should check: