Self-starting permanent magnet synchronous motor rotor
A permanent magnet synchronous motor technology, applied in the field of electric motors, can solve the problems of low operating efficiency, poor manufacturability, and large energy consumption, and achieve the effects of high operating efficiency, convenient magnetization, and good manufacturability
Inactive Publication Date: 2016-04-13
尚勤贵
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Problems solved by technology
[0002] In the existing self-starting permanent magnet synchronous motor, the permanent magnet is arranged in the rotor core between the cage bar and the rotating shaft. This structure has two defects. Due to the long distance between the permanent magnet and the stator, when the motor starts to enter normal operation During the process, the operating efficiency is low and the energy consumption is large. The second is that the permanent magnet is installed in the rotor core, which is poor in manufacturability.
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[0007] The present invention has following embodiment, as Figure 1-3 As shown, four axial arc-shaped slots matching the permanent magnet 5 with a tile-shaped cross-section are evenly distributed on the circumferential surface of the rotor core 7, and on the outer edge of the rotor core between the end faces of the four arc-shaped slots Three squirrel cage bars 6 are evenly distributed, and the two ends of the above-mentioned 12 squirrel cage bars are respectively connected with two end rings to form an inner squirrel cage. The permanent magnet in the groove is fixed to prevent it from being thrown out by centrifugal force when rotating at high speed. 24 axial long holes 2 are evenly distributed on the peripheral surface of the sheath, and the strips between the 24 long holes form outer cage bars 3, and 12 cage bars in the outer cage bars are respectively connected with permanent The inner cage bars between the magnet end faces face each other. The sheath is made of conducti...
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The invention discloses a self-starting permanent magnet synchronous motor rotor comprising a squirrel cage, a rotor iron core and permanent magnets. The permanent magnets of which the cross section is tile-shaped are evenly distributed in arc-shaped grooves arranged on the circumferential surface of the rotor iron core. The cage strips of the squirrel cage are evenly distributed in the rotor iron core between the permanent magnet end surfaces. The two ends of each cage strip are respectively connected with the two end rings of the squirrel cage so as to form an internal squirrel cage. A cylindrical sheath sleeves the external circumferential surface of the rotor iron core and the external circumferential surface of the permanent magnets of which the cross section is tile-shaped. Axial long holes are evenly distributed on the circumferential surface of the sheath. A part of external cage strips between the long holes are opposite to the squirrel cage strips. An external squirrel cage is formed by the sheath. The sheath is made of conductive and non-magnetic material. The self-starting permanent magnet synchronous motor rotor has substantial advantages of high operation efficiency, energy conservation, convenient magnetizing and great manufacturability.
Description
Technical field: [0001] The invention relates to a motor, in particular to a self-starting permanent magnet synchronous motor rotor. Background technique: [0002] In the existing self-starting permanent magnet synchronous motor, the permanent magnet is arranged in the rotor core between the cage bar and the rotating shaft. This structure has two defects. Due to the long distance between the permanent magnet and the stator, when the motor starts to enter normal operation During the process, the operating efficiency is low, and the defects of large energy consumption, the second is that the permanent magnet is set in the rotor core, and the manufacturability is poor. Invention content: [0003] The purpose of the invention is to design a self-starting permanent magnet synchronous motor rotor with high operating efficiency, energy saving and good manufacturability. [0004] The technical solution for realizing the object of the present invention is that the self-starting pe...
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IPC IPC(8): H02K1/27H02K21/02H02K21/46
CPCH02K1/278H02K21/022H02K21/46
Inventor 尚勤贵崔克泉王俊杰郭辉尚金铎马长银尚金鸽孔祥云
Owner 尚勤贵