一、交流发电机常见故障及原因1．发电机不发电或输出电压低。其原因是定子线圈匝间短路或搭铁；磁极表面吸有铁屑等导磁杂质，造成磁短，使通过定子铁芯的磁力线减少；转子磁性减退等。2．发电机过热。其原因是轴承缺油或轴向间隙过小，使轴承剧烈摩擦而产生过热现象；轴承间? First, the alternator common faults and causes 1. The generator is not generating or the output voltage is low. The reason is that the stator coil inter-turn short circuit or ground; magnetic surface sucked iron and other magnetic impurities, resulting in magnetic short, so that the magnetic field lines through the stator core decreases; rotor magnetic decline. 2. Generator overheated. The reason is the lack of bearings or axial clearance is too small, so that the bearing friction caused by overheating severe friction;