Stator for motor, manufacturing method thereof, motor and compressor

Abstract

The invention discloses a stator for a motor, a manufacturing method thereof, the motor and a compressor. The stator comprises a stator core and a stator winding. A plurality of stator grooves are formed on the stator core at intervals in the peripheral direction. The stator winding comprises a plurality of stator conductors. Each stator conductor is roughly in a U shape. The two ends of all the stator conductors are inserted into the stator grooves respectively and connected with one another to form the stator winding. The stator conductors are arranged in the radial direction of the stator core. The number of slots of each pole and each phase of the motor is q, wherein the q is larger than and equal to 2. According to the stator for the motor, the stator winding including the roughly-U-shaped stator conductors is adopted, the stator conductors are arranged in the radial direction of the stator core, the number of the slots of each pole and each phase of the motor is larger than or equal to 2, when the motor with the stator is applied to the compressor, the energy efficiency of the compressor can be improved, and the vibration noise of the compressor is lowered.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a stator for a motor, a manufacturing method thereof, a motor and a compressor. Background technique [0002] It is pointed out in related technologies that inverter air conditioners have high energy efficiency and good environmental comfort, and have gradually become the mainstream of the air conditioner industry. Permanent magnet motors have high power density and good performance, and become the main drive motors for inverter air conditioner compressors. At present, in order to improve the energy efficiency of the compressor, the stator assembly of the motor generally adopts a fractional slot concentrated winding, which can reduce the resistance loss of the compressor, but it brings the problem of deterioration of the vibration and noise of the rotor-type air-conditioning compressor. Machine quiet requirements are getting higher and higher. [0003] Since the vib...

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Problems solved by technology

At present, in order to improve the energy efficiency of the compressor, the stator assembly of the motor generally adopts a fractional slot concentrated winding, which can reduce the resistance loss of the compressor, but it brings the problem of deterioration of the vibration and noise of the rotor-type air-conditioning compressor. The quietness requirements of the machine are also getting higher and higher.

[0003] Since the vibration noise of the permanent magnet motor comes from the electromagnetic rotational force wave inside the motor, the integer slot distribution winding has the advantages of symmetry and distribution, and its electromagnetic vibration noise is significantly better than the fractional slot concentration commonly used in the rotor air-conditioning compressor. winding motor, but the concentrated winding motor can be wound on a single tooth, the winding end is shorter and more neat, so the energy efficiency of the compressor is higher; and the distributed winding motor, especially the motor winding with more slots per pole and per phase The longer span and higher winding ends lead to poor energy efficiency of the compressor, which causes the contradiction between noise and energy efficiency of the rotary air-conditioning compressor and cannot be balanced

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