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小型水利发电站(或柴油机发电站)采用他激励磁的同步发电机进行发电,常见的故障一般是励磁机的换向器损坏.在换向器难于解决又修复不了的情况下,可用硅整流自激励磁装置代替直流励磁机使用.电路如图.其工作原理是利用交流发电机转子磁极上的剩磁,转子旋转时则剩磁磁力线切割定子绕组,在电枢绕组上感应出一个很小的交流电压.此电压经过变压器送到整流器输入端,在输出端便得到一
A small hydropower station (or a diesel power station) uses his excitation synchronous power generator to generate electricity, and the common fault is usually the damage to the commutator of the exciter.When the commutator is hard to solve and can not be repaired, Excitation device instead of DC exciter to use the circuit shown in Figure 1. Its working principle is to use the residual magnetization of the rotor poles of the rotor when the rotor rotates the residual magnetic field lines cutting the stator winding induction in the armature winding a very small Of the AC voltage.This voltage is sent to the rectifier input transformer, the output will be a