A non-uniform air gap built-in V-shaped permanent magnet motor rotor structure
A permanent magnet motor and rotor structure technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve problems such as increased vibration and operating noise, decreased permanent magnet flux, and low permanent magnet utilization , to achieve the effect of reducing flux leakage, reducing eddy current loss and iron loss, and improving permanent magnet utilization
Active Publication Date: 2021-01-15
JIANGSU UNIV
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Problems solved by technology
However, the design of non-uniform air gap often leads to the decrease of permanent magnet flux and low utilization rate of permanent magnet, and the unreasonable salient pole design often leads to the increase of cogging torque and torque ripple, which in turn increases vibration and running noise
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[0023]The present invention will be further described in the following specific embodiments:
[0024]The invention relates to a non-uniform air gap built-in V-shaped permanent magnet motor rotor structure, which has the following characteristics: the outer circle of the rotor is composed of two salient pole structures, a large salient pole structure (1) and a small salient pole structure (3). ); The large salient pole structure and the small salient pole structure are connected by a connecting arc (2); a number of large salient pole structures, small salient pole structures and connecting arcs form the outer circle of the rotor. V-shaped grooves (such asFigure 4 Shown);
[0025]Such asFigure 1-2 As shown, the large salient pole structure is composed of three arcs: arc 1 (1-1), arc 2 (1-3) and arc 3 (1-2), and arc 2 (1-3) ) Is located in the middle, arc 1 (1-1) and arc 3 (1-2) are located at both ends. The radius of the arc 1 (1-1) and the arc 3 (1-2) are both R3, the angle of the center i...
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The invention discloses a non-uniform air gap built-in V-shaped permanent magnet motor rotor structure. The excircle of a rotor is composed of two types of salient pole structures, namely a large salient pole structure (1) and a small salient pole structure (3); the large salient pole structure is connected with the small salient pole structure via an arc (2); and multiple large salient pole structures, small large salient pole structures and arcs form the rotor excircle. and V-shaped grooves are arranged under the large salient pole structures respectively, a crotch magnetic isolated groove is arranged in the top end of the V shape, and a reinforcing rib is arranged between the adjacent V-shaped grooves. Compared with a present built-in V-shaped permanent magnet motor, the salient pole rate is increased, the magnetic resistance torque is fully used, magnetic flux leakage is reduced, and the utilization rate of permanent magnets is improved; and magnetic flux density and harmonic wavesof the air gap of the motor are improved, the gullet torque and torque ripples are reduced, the iron core loss and eddy current loss are reduced effectively, and the motor efficiency and power density are improved.
Description
Technical field[0001]The invention relates to a permanent magnet motor rotor structure, in particular to a non-uniform air gap permanent magnet motor with "V"-shaped permanent magnets in the rotor. It is suitable for compressors, air conditioners, electric tools, electric vehicles and other applications, belonging to motors Technical field.Background technique[0002]With the development of permanent magnet material technology, permanent magnet motors are more and more widely used in various fields of human production and life. Due to the outstanding characteristics of high efficiency, high power density, high reliability, and various structural designs, permanent magnet motors have made great progress. The optimized design of permanent magnet motors can maximize their performance and efficiency. .[0003]The built-in V-shaped permanent magnet motor is a common built-in permanent magnet motor. Because the permanent magnet is embedded in the rotor and the permanent magnet is surrounded b...
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IPC IPC(8): H02K1/27H02K1/24
Inventor 徐磊华亦峰朱孝勇张超段璐瑶
Owner JIANGSU UNIV