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    In simple terms: fixed part of the motor stator, installed in pairs in which the dc excitation of the stillness of the main pole;While rotating parts (rotor) is called the armature iron core, in the above to furnish the armature winding, after electrify produce inductive electromotive force, acting as a rotating magnetic field. To produce electromagnetic torque for energy conversion. In the shape of the stator winding with built-in way to distinguish, according to the coil winding of the stator winding of the shape and built-in wiring in a different way, can be divided into two categories, centralized and distributed.

    Applied to the salient pole stator winding: centralized winding, usually made rectangular coil winding, finalize the warp bandaging, again after leaching paint drying treatment, embedded in a convex pole core. General commutator motor (including dc motor) and general motor excitation coil and single phase mask main pole pole salient motor winding adopts centralized winding.

    Usually is highly centralized winding a coil, but there are also adopt ordinary extremely (cylindrical) form, such as pole motor frame type cover is to use a coil form the motor poles.

    Distributed winding: distributed winding motor stator without convex pole, each pole consists of one or several coil embedded wiring according to certain rules of coil group, after electrify form different polarity of magnetic pole, so also called non-salient pole type. According to different embedded wiring arrangement, the distributed winding and can be divided into two categories, concentric type and fold type.

    Circle group. According to different ways of wiring, constitute concentric winding double plane or three plane winding. General single-phase motor and some small power or large span of three-phase asynchronous motor stator winding coil in this model.

    (2) lap lap windings is commonly by the shape, the size of the same coil, respectively in each slot embedded in one or two side of coil, and outside the slot end piled up one by one in the form of uniform distribution. And single lap winding cascading and double cascading two. Each slot into the edge of a coil for single cascading winding, or single lap winding, every trough embedded two belong to different coil assembly of coil side is split between upper trough, the lower level, for the double cascading winding, or double lap winding. According to different embedded wiring way change, lap winding can be derived out of the intersection, concentric intersection as well as single and double layer hybrid model. At present, the general power larger three-phase asynchronous motor stator winding with double cascading, more small motor is multi-purpose derived type in single cascading winding, but rarely USES single cascading winding.