Cover pole electric machinery
Electromotor of cover pole type is the simplest kind in one-way AC motor, use normally basket model aluminous rotor of inclined chamfer casting. It according to stator appearance structure different, divide again it is protruding pole type type of non-salient pole of cover pole electromotor is overspread extremely electromotor.
Protruding pole type is overspread extremely the magnetic field frame that the stator core appearance of electromotor is quadrate, rectangle or circle, magnetic pole is bulgy, there all is 1 on every magnetic pole or the annulus of short circuit copper of many auxiliary action, namely cover pole winding. The concentration on protruding pole magnetic pole winding is made give priority to winding.
Non-salient pole type is overspread extremely the core of the stator core of electromotor and common and single-phase electromotor is identical, its stator winding uses distributinging winding, advocate winding distributings within stator chamfer, cover pole winding need not annulus of short circuit copper, circle composition cloth winding with thicker enamel-insulated wire however (short circuit of the proper motion after series connection) embed outfit in stator chamfer (the 1/3 that is total chamfer number about) , have the effect of auxiliary group. Advocate winding and cover extremely winding is in the point of view with dimensional proper apart.
Become of cover pole electromotor advocate after winding electrify, cover pole winding also can arise faradic, make stator magnetic pole is overspread extremely the magnetic flux that winding covers a part and did not overspread a part to be rotated by the direction of cover part.
The advantage is a structure simple, need not add winding and capacitor additionally.
Defect is efficiency low, slippery difference is big
One, what is the full name of cover pole electric machinery?
1, Chinese full name is: Single-phase cover extremely asynchronous electromotor.
2, English full name is: Single-phase Shaded-pole Asynchronous Motor; So abroad call his again: SP-motor.
2, the “ in cover pole electric machinery what meaning is cover pole ” ?
1, cover pole electric machinery is a kind of single-phase electric machinery.
2, the single-phase electric machinery on firm sense, its advocate the magnetic field that winding place produces is the and rather than of pulsatile magnetic field that will go continuously continuously rotates magnetic field, did not start moment of force; Namely: The electric machinery after electrify won't oneself are rotational. But can bring to bear on the outside force of some direction makes its are started, the direction of its direction of rotation and outside force is consistent.
3, start moment of force to obtain, very much single-phase electric machinery is divided indispensable advocate outside winding, still added one photograph auxiliary winding, became the electric machinery of “ two-phase ” on real significance.
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