Permanent magnet motor and its rotor
A technology for permanent magnet motors and rotors, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve problems affecting the application of permanent magnet motors, increase process difficulty and production costs, etc., and achieve simple structure and easy manufacturing The effect of simple process and high output performance
Active Publication Date: 2018-05-29
ANHUI WELLING AUTO PARTS CO LTD +1
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Problems solved by technology
For example, the use of stainless steel shafts or magnetic isolation copper sleeves, although these two solutions can well limit magnetic flux leakage, but greatly increase the difficulty of the process and production costs, affecting the application of permanent magnet motors
Method used
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Embodiment Construction
[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "axial", "radial", and "circumferential" are based on the drawings The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation,...
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The invention discloses a permanent magnet motor and its rotor, comprising: a rotor iron core with a plurality of radially extending installation grooves; a plurality of permanent magnets, the plurality of permanent magnets are respectively one by one Correspondingly arranged in a plurality of installation slots, wherein the magnetization directions of adjacent permanent magnets are opposite; and a plurality of magnetic isolation air gaps, the plurality of magnetic isolation air gaps extend along the axial direction of the rotor iron core on the rotor core And distributed along the circumferential direction, each magnetic isolation air gap is located at the inner end of at least two adjacent installation slots and communicates with the installation slots, wherein a first magnetic isolation bridge is formed between every two adjacent magnetic isolation air gaps . According to the rotor of the present invention, on the basis of realizing the use of conventional shaft materials, the leakage magnetic flux is reduced, the output torque is increased, and the output performance is improved; in addition, the structure is simple, the mechanical strength is high, the process is simplified, and it is convenient for actual production .
Description
technical field [0001] The invention relates to the field of permanent magnet motors, in particular to a rotor of a permanent magnet motor and a permanent magnet motor with the same. Background technique [0002] The magnetic flux of each pole of the circumferentially magnetized embedded permanent magnet motor is provided by two permanent magnets connected in parallel, which effectively increases the magnetic flux density of the air gap between the stator and the rotor, thereby increasing the output performance of the motor, and has always been favored by the industry. . However, the magnetic flux leakage is abundant in the permanent magnet area close to the rotating shaft, and the utilization rate of the permanent magnet is low. [0003] In related technologies known to the inventor, there are many ways to limit magnetic flux leakage. For example, a stainless steel shaft or a magnetically isolated copper sleeve are used. Although these two solutions can well limit the mag...
Claims
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IPC IPC(8): H02K1/27
Inventor 葛笑陈金涛诸自强
Owner ANHUI WELLING AUTO PARTS CO LTD