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60年代以前的小型水轮发电机都采用直流励磁机励磁,由于整流子的长期磨损和火花,迫切需要以自励恒压装置来代替直流励磁机。根据我站对本市几座小水电站的励磁改革实践证明,以采用PSWN型自励恒压装置(见图1)较为合适。这种装置具有线路
Prior to the 1960s, small hydroelectric generators were excited by a DC exciter. Due to the long-term commutator wear and sparks, it is urgent to replace the DC exciter with a self-excited constant voltage device. According to my station on the city’s several small hydropower station excitation reform proved to adopt PSWN-type self-excited constant pressure device (see Figure 1) is more appropriate. This device has wiring