Alternating current (ac) motor stator core of compressor and wire embedding method thereof

Abstract

The invention relates to a mechatronic alternating current (ac) motor stator core of a compressor and a wire embedding method thereof and especially relates to an ac motor stator core of a piston refrigeration compressor used in a refrigerator. The motor stator core comprises an iron core body. A rotor aperture is arranged in a middle part of the iron core body. Wire embedding slots, which penetrate along an axial direction, are arranged along a circumferential direction of a hole wall of the rotor aperture. Inner sides of the wire embedding slots are provided with notches. A circumferential width (chord length) Bs0 of the notch is 0.1-1.0 mm. By using the stator core and the method of the invention, iron core surface losses and tooth pulse vibration losses can be reduced; an air gap coefficient is decreased; a field current is reduced; a power factor is raised so that working efficiency of the motor can be raised. Through redesigning a slot type size of the wire embedding slot, the additional losses generated by a harmonic field can be reduced so that the working efficiency of the motor can be further raised. A computer simulation experiment shows that the working efficiency of the motor can be increased by 1.5% by using the stator core of the invention. The stator core and the method is especially suitable for the single-phase asynchronous ac motor used in the totally enclosed refrigeration compressor.

Description

technical field [0001] The invention relates to an electromechanical integrated AC motor stator core of a compressor, in particular to an AC motor stator core used for a piston refrigeration compressor of a refrigerator and a wire embedding method thereof. Background technique [0002] With the continuous advancement of energy conservation and emission reduction, the energy consumption requirements for refrigeration equipment are also continuously increasing. Refrigerator is a kind of widely used daily life electrical appliances, its operation energy consumption reduction is particularly important for energy saving. The motor is the heart of the refrigeration compressor, and its performance directly affects the energy consumption of the refrigeration equipment, and the motor stator is a key component that determines the energy consumption performance index of the motor. The existing refrigerator AC motor stator is composed of an iron core and a coil embedded in the iron cor...

AI Technical Summary

Problems solved by technology

For single-phase asynchronous AC motors used in existing fully enclosed refrigeration compressors, the circumferential width Bs0 of the stator core embedding groove is between 1.3 and 2.3mm. Since the slot opening is relatively wide, the core surface loss The pulse vibration loss of teeth and teeth is large, the air gap coefficient is large, the excitation current is high, and the power factor is low, resulting in a decrease in motor efficiency

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