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Permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and magnet steel, which is applied in the direction of synchronous motor with stationary armature and rotating magnet, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., which can solve poor starting ability and demagnetization margin The problems such as small quantity can be solved to achieve the effect of improving starting ability, increasing demagnetization margin and improving performance

Active Publication Date: 2016-03-23
GREE ELECTRIC APPLIANCES INC +1
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Problems solved by technology

[0003] The embodiment of the present invention provides a permanent magnet synchronous motor, which can solve the problems of poor starting ability and small demagnetization margin of the permanent magnet synchronous motor in the prior art, and improve the performance of the permanent magnet synchronous motor

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0030] see Figure 1 to Figure 5 As shown, according to the embodiment of the present invention, the permanent magnet synchronous motor includes a rotor 1, a squirrel cage 2 is arranged on the rotor 1, a squirrel cage groove 14 is provided on the squirrel cage 2, a magnetic steel groove 4 is provided on the inside of the squirrel cage 2, and a magnetic steel groove 4 is provided on the inside of the squirrel cage 2. A magnetic steel 3 is arranged inside the steel groove 4, and the first end of the magnetic steel groove 4 is provided with an arc-shaped first magnetic isolation air gap 5, preferably, the first magnetic isolation air gap 5 is arranged concentrically with the rotation center of the rotor 1 . A first magnetic isolation bridge 6 is formed between the first magnetic isolatio...

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Abstract

The invention discloses a permanent magnet synchronous motor. The permanent magnet synchronous motor comprises a rotor (1), the rotor (1) is provided with a mouse cage (2), the mouse cage (2) is provided with mouse cage grooves (14), an inner side of the mouse cage (2) is provided with magnetic steel grooves (4), magnetic steels (3) are disposed in the magnetic steel grooves (4), a first end of each magnetic steel groove (4) is provided with an arc-shaped first magnetic isolation air gap (5), a first magnetic isolation bridge (6) is formed between each first magnetic isolation air gap (5) and the mouse cage (2), a circumferential angle occupied by each magnetic isolation air gap (5) is (0.9~1.2)*360 / n<1>, [alpha] is 0.9 to 1.2 times of a circumferential inclined angle between two adjacent mouse cage grooves, and n<1> is the number of rotor conductive strips. According to the permanent magnet synchronous motor of the invention, the problems of the poor starting capability and the small demagnetization margin of a permanent magnet synchronous motor in the prior art can be solved, and performance of the permanent magnet synchronous motor is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor. Background technique [0002] Permanent magnet self-starting motors have been widely used in the home appliance industry, including air conditioners, refrigerators, fans, etc., which have a prominent effect on energy saving. Limited by the shortage and high price of rare earth materials, this model has not been popularized and applied in large quantities, which also shows the immaturity of this technology. At present, the application of this type of motor generally has problems such as poor starting ability and small demagnetization margin, which seriously restrict the performance of the motor. Contents of the invention [0003] An embodiment of the present invention provides a permanent magnet synchronous motor, which can solve the problems of poor starting capability and small demagnetization margin of the permanent magnet synchronous mot...

Claims

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Application Information

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IPC IPC(8): H02K21/14H02K1/27
Inventor 高明世陈彬陈华杰
Owner GREE ELECTRIC APPLIANCES INC
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