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1 引言 测速发电机的输出特性 ,直接影响到电传动内燃机车的牵引特性 ,测速发电机一旦出现故障 ,极易发生机破。因此 ,在使用测速发电机励磁的电传动内燃机车中 ,无一例外 ,都采用了提高可靠性的冗余设计方案 ,即增加故障励磁电路 ,有的采用电器线路 ,有的采用电子线路。但
1 Introduction Tachogenerator output characteristics, a direct impact on the electric drive diesel locomotive traction characteristics, tachometer generator in the event of failure, prone to machine broken. Therefore, the use of speed generator excitation electric drive diesel locomotive, without exception, have adopted to improve the reliability of redundant design, that is, fault excitation circuit, and some use of electrical wiring, and some use of electronic circuits. but