An ie5 three-phase asynchronous motor based on unequal-slot punched stator and cast aluminum rotor

Abstract

An IE5 three-phase asynchronous motor based on stator unequal slot punching and cast aluminum rotor. The rotor core of the motor is made of a plurality of rotor punching laminates. The rotor punching includes a ring-shaped first substrate. On the outer ring surface of the substrate, there are a plurality of closed slots radially and evenly arranged along the circumferential direction of the first substrate, and aluminum guide bars are cast in the closed slots; the stator core of the motor is pressed by a plurality of stator unequal slots. The stator unequal slot punching sheet includes a ring-shaped second substrate, and stator slot groups for placing copper wires are arranged radially and uniformly on the inner ring surface of the second substrate along the circumferential direction of the second substrate. , the number of stator slots per pole and phase in each group of stator slots is at least three, including at least one large stator slot and at least two small stator slots, the large stator slot is set in the middle of the stator slot group, and the large stator slot One or more small stator slots are respectively provided on both sides of the set; or include at least one large stator slot, at least two middle stator slots and at least two small stator slots, the large stator slot is arranged in the middle of the stator slot group, and the large stator slot One or more small stator slots are respectively arranged on both sides of the two sides, and one or more middle stator slots are respectively arranged between the large stator slot and the small stator slot. Convex wedge.

Description

technical field [0001] The invention belongs to the technical field of three-phase asynchronous motors, and in particular relates to an IE5 three-phase asynchronous motor based on stator unequal slot punching and a cast aluminum rotor. Background technique [0002] In 2014, the International Electrotechnical Commission IEC issued the IEC60034-30-1 "Energy Efficiency Classification of Single-speed, Three-phase Cage Induction Motors" standard, which unified the motor energy efficiency standards into four levels: IE1, IE2, IE3, and IE4, of which IE4 It is the highest efficiency level at present, that is, the highest efficiency level achievable by current technology. [0003] With the improvement of product performance index requirements in domestic and foreign markets, the highest grade IE4 motors in the current market will be replaced by IE5 grade motors. The target value of IE5 is determined by reducing the loss by about 20% based on the level of IE4. However, it is very di...

AI Technical Summary

Problems solved by technology

But obviously this kind of attempt will inevitably increase the cost of the product, and it does not meet the current purpose of energy saving and consumption reduction

Images