①罩极式电动机:罩极式电动机主要由定子(或称磁场框)、转子以及端盖三大部分组成。转子为鼠笼式,定子由硅钢片叠合而成。在每个磁极的极掌(极靴)的一端开有一个小槽,在小槽中嵌入一个短路线圈,罩住磁极的1/2～1/3,这个短路线圈(或铜环)也叫做罩极圈(见图65)。主绕组(工作绕组)嵌放在槽内 ① shaded pole motor: Shaded pole motor mainly by the stator (or magnetic field box), the rotor and the cover of three major components. The rotor is a squirrel-cage type, and the stator is made of laminated silicon steel sheets. A small slot is formed at one end of the pole piece (pole shoe) of each magnetic pole, a short circuit coil is embedded in the small slot and covers 1/2 to 1/3 of the magnetic pole. This short circuit coil (or copper ring) is also called Cover pole circle (see Figure 65). The main winding (working winding) is embedded in the slot