Variable frequency capacity increasing motor stator punching sheet, variable frequency capacity increasing motor stator and stator winding line inserting method

Abstract

The invention discloses a variable frequency capacity increasing motor stator punching sheet, a variable frequency capacity increasing motor stator and a stator winding line inserting method, and relates to the field of motors. The groove-shaped structure of an existing three-phase asynchronous random nesting winding stator punching sheet is mainly a pear-shaped groove, ventilation pore passages are arranged on a rotor to improve a cooling effect through ways including air gap increasing, fan enlargement and the like, but the scheme causes the problems of uneven stator and rotor component temperature, overhigh winding temperature rise and the like. The punching sheet disclosed by the invention comprises stator grooves which are surrounded and evenly distributed, wherein each stator groovecomprises an inner groove and an outer groove, and the inner groove and the outer groove are communicated through a ventilation opening. The stator groove structure is changed in the inner and outer groove structure, and the ventilation opening is arranged between the inner groove and the outer groove. When a motor works, an external cooling fan carries out air draft, cold air passes through ventilation channels formed by ventilation openings, the inner layer winding and the outer layer winding of the stator are directly effectively cooled, a heat dissipation area is increased, a heat dissipation effect is enhanced, so that the temperature rise of the motor is lowered, the capacity increasing of the variable frequency motor is realized, and carrying capacity is improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator punching method for a variable frequency and capacity increasing motor, a stator and a stator winding embedding method. Background technique [0002] The design of the air passage structure of the motor plays a vital role in the cooling of the motor. The reasonable design of the air passage structure can effectively reduce the temperature rise of the motor, improve the efficiency of the motor, and reduce the loss. The slot structure of the existing three-phase asynchronous loose-embedded winding stator punching sheet is only a traditional design, mainly pear-shaped slots, limited by the calculation method of the electromagnetic scheme program and the limitations of the traditional design structure, and can only be used to set ventilation holes on the rotor , Ventilation channel, increasing the air gap, increasing the fan and other methods to increase the cooling effect and reduce t...

AI Technical Summary

Problems solved by technology

The slot structure of the existing three-phase asynchronous loose-embedded winding stator punching sheet is only a traditional design, mainly pear-shaped slots, limited by the calculation method of the electromagnetic scheme program and the limitations of the traditional design structure, and can only be used to set ventilation holes on the rotor , air duct, increase the air gap, increase the fan and other methods to increase the cooling effect and reduce the temperature rise, but this solution will lead to uneven temperature of the stator and rotor parts, high temperature rise of the winding, low efficiency and other problems

Therefore, it is necessary to combine the specific characteristics and structure of the motor to innovate the design of the ventilation structure to solve the problem of small motor capacity and temperature rise

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