Rare earth permanent magnet synchronous motor with absolute origin signal
A rare earth permanent magnet, synchronous motor technology, applied in the direction of motor, magnetic circuit, electromechanical device, etc., can solve the problem that the origin magnetic ring can know the relative position of the outer rotor and the inner stator, and the origin magnetic ring without absolute origin signal, and the difficult rotor and inner stator. Accurate control of the inner stator and other issues to achieve the effect of reducing temperature, preventing demagnetization, and reducing weight
Active Publication Date: 2020-12-15
湖南普东科技有限责任公司
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Problems solved by technology
[0004] The existing rare earth permanent magnet synchronous motor is not equipped with an origin magnetic ring that can monitor the absolute origin signal, and the relative position between the outer rotor and the inner stator cannot be known through the origin magnetic ring, and it is difficult to accurately determine the relative position between the rotor and the inner stator. Control, the traditional rare earth permanent magnet synchronous motor only dissipates heat through air cooling, and the heat dissipation performance is poor
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[0029] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. structure, so it only shows the configuration related to the present invention, and it should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and Simplified descriptions do not ...
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The invention relates to a rare earth permanent magnet synchronous motor with an absolute origin signal. The rare earth permanent magnet synchronous motor comprises a shell, a stator and a rotor, wherein the stator is arranged on the inner wall of the shell, an induction assembly is arranged on one side of the stator, the induction assembly comprises an original point magnetic ring and a magnetismisolating ring, and the original point magnetic ring is located on the outer side of the magnetism isolating ring; the origin magnetic ring comprises a first origin magnetic ring and a second originmagnetic ring, and the first origin magnetic ring and the second origin magnetic ring are concentrically sleeved; the rotor is arranged on the inner side of the shell in the axis direction, a plurality of grooves are formed in the outer wall of the rotor in the circumferential direction, permanent magnets are arranged in the grooves, and the grooves are parallel to the rotating center of the rotor.
Description
technical field [0001] The invention relates to the field of motors, in particular to a rare earth permanent magnet synchronous motor with an absolute origin signal. Background technique [0002] The rare earth permanent magnet synchronous motor has a power level higher than that of the three-phase asynchronous motor in starting torque and overload capacity, and the ratio of the maximum starting torque to the rated torque can reach 3.6 times, while the general asynchronous motor is only 1.6 times. No slip, no fundamental wave iron and copper loss on the rotor, the rare earth permanent magnet synchronous motor is bilaterally excited, and mainly the rotor permanent magnet is excited, and its power factor can reach or be close to 1.0. The improvement of power factor, on the one hand, saves reactive power, on the other hand, it also reduces the stator current, reduces the stator copper consumption, and improves the efficiency. The pole arc coefficient of the rare earth permanent...
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IPC IPC(8): H02K11/215H02K1/32H02K1/27H02K9/00H02K9/19
CPCH02K11/215H02K1/32H02K1/2706H02K9/00H02K9/19H02K2201/03Y02T10/64
Inventor 金欧周洪平
Owner 湖南普东科技有限责任公司