Rotor of compressor, motor assembly of compressor and compressor

Abstract

The invention discloses a rotor of a compressor, a motor assembly of the compressor and the compressor. The rotor of the compressor comprises a rotor core and a plurality of magnets; the magnets are distributed on the rotor core at interval along a circumferential direction; a cross section outer contour of the rotor core comprises a plurality of magnet corresponding sections and a plurality of inter-subject corresponding sections; a part located at the radial outer side of each magnet in the cross section outer contour of the rotor core is the corresponding magnet corresponding section; one inter-subject corresponding section is connected between every two adjacent magnet corresponding sections; each magnet corresponding section comprises at least one eccentric circular arc; and the center of the at least one eccentric circular arc and the center of the rotor is staggered. According to the rotor of the compressor disclosed by the embodiment of the invention, when delta connection is adopted by a stator winding of a motor, third harmonic content of the opposite potential of the motor can be reduced, motor loss is reduced, and performance of the motor is promoted.

Description

technical field [0001] The invention relates to the field of compressor equipment, in particular to a rotor of a compressor, a motor assembly of the compressor and the compressor. Background technique [0002] In the existing motor manufacturing process, the windings are mostly star-connected. However, for some motors with thick wire diameters or with one or more neutral points, the use of star connection will lead to high winding difficulty, slow process cycle, low degree of automation, low production efficiency, and the manufactured motor end There are many problems such as high profile and low material utilization rate. [0003] An effective way to solve the above problems is to change the wiring method of the winding, and use the delta connection method. Under the same induced electromotive force, the delta winding can use smaller wire diameters and more turns, which can effectively reduce the length of the motor end. Reduce costs, remove neutral points, and improve ma...

AI Technical Summary

Problems solved by technology

However, in the delta winding, the third harmonic of the counter electromotive force will generate circulating current in the delta closed winding, resulting in loss and reducing the performance of the motor

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