High power density disc type motor

Abstract

The invention relates to a high power density disc motor which is characterized in that a soft magnet constitutes a flat ring stator core; a wire groove with a fan-shaped surface is arranged on the end surface thereof; the width of the outer circle end of the fan-shaped wire groove is larger than the width of the inner circle end; and the groove depth of the inner circle end of the wire groove is larger than the groove depth of the outer circle end. A stator core of the motor adopts the soft magnet with, the performance equal to a silicon steel sheet winding stator core with high magnetic permeability; the area of an outer circle yoke part of the stator core is larger than the area of an inner circle yoke part; the material is fully utilized; the effective magnetic lines of force of the yokes can be increased by about 50 percent; the groove area can be increased by about 30 percent; and the power output of the motor can be increased, thereby forming the high power density disc motor. The invention has the significant advantages of simple processing of the stator core, compact structure and ability of significantly improving the power of the disc motor.

Description

Technical field [0001] The invention belongs to a disc motor, and particularly relates to a high power density disc motor. Background technique [0002] The stator core of the existing disc motor is made of belt-shaped silicon steel sheet punched and wound with side slots with unequal pitches. The main disadvantages are: 1. Complex processing and expensive equipment. 2 The slot width on the stator end face is equal in width and depth. If the width of the inner circular slot is equal to the width of the tooth, the slot width at the outer circular end of the wire slot is only a fraction of the tooth width at the outer circular end, resulting in the stator winding occupying this part The space is greatly reduced, so that the motor output is also greatly reduced. 3 The lines of magnetic force passing through the inner circle are obviously less than those passing through the outer circle, but the same area of ​​the yoke causes material waste on the one hand, and reduces the motor outp...

AI Technical Summary

Problems solved by technology

[0002] The existing disc-type motors, whose stator core is made of band-shaped silicon steel sheets punched and wound with side slots with different spacing, have the main defects as follows: 1. Complicated processing and expensive equipment

2. The wire grooves on the end surface of the stator are equal in width and depth. If the width of the inner circular groove is equal to the width of the teeth, the groove width at the outer circular end of the wire groove is only a fraction of the tooth width at the outer circular end, resulting in the stator winding occupying The space is greatly reduced, so that the output of the motor is also greatly reduced

3 The magnetic force lines passing through the inner circle are significantly less than those passing through the outer circle, but the area of ​​the yoke is the same, which causes waste of materials on the one hand, and reduces the output of the motor on the other hand

Images