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Double-stator conical adjustable air gap permanent magnet motor

A permanent magnet motor, double stator technology, applied in electrical components, electromechanical devices, etc., can solve problems such as the reduction of motor efficiency, and achieve wide speed expansion, high efficiency, economical and practical effects

Active Publication Date: 2009-12-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the efficiency of the permanent magnet motor with the existing traditional structure is reduced, the present invention proposes a double-stator conical adjustable air gap permanent magnet motor

Method used

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  • Double-stator conical adjustable air gap permanent magnet motor
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  • Double-stator conical adjustable air gap permanent magnet motor

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Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 , figure 2 or image 3 Describe this embodiment, this embodiment includes stator, rotor, support frame and two rotor slides; On the sub-core 8, the outer stator core 6, the rotor 7 and the inner stator core 8 are fixed on the support frame, the outer stator core 6, the rotor 7 and the inner stator core 8 are coaxially set together from the outside to the inside, and the inner stator core 8 is There is an equal inner air gap a between the surface and the inner surface of the rotor 7; an equal outer air gap b is set between the outer surface of the rotor 7 and the inner surface of the outer stator core 6, and the outer surface of the inner stator core 8 and the inner surface of the rotor 7 Both are conical or cylindrical surfaces, the outer surface of the rotor 7 and the inner surface of the outer stator core 6 are both conical or cylindrical surfaces; one rotor slide is set on the annular opening 15 of the rotor outpu...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 1 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is that the outer surface of the inner stator core 8, the inner surface of the rotor 7, the outer surface of the rotor 7, and the inner surface of the outer stator core 6 are all tapered surfaces, and other components and connections are the same as The specific embodiment one is the same. Both inner and outer stator cores exert axial magnetic pull and torque on the rotor. Through the control of the current of the stator winding 9, the appropriate axial displacement of the rotor 7 can be obtained, the air gap is increased, the air gap magnetic field is weakened, and the speed of the weakened magnetic field is realized. In this case, sufficient output torque can be obtained.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 2 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the outer surface of the inner stator core 8 and the inner surface of the rotor 7 are both conical surfaces, and the outer surface of the rotor 7 and the inner surface of the outer stator core 6 are both cylindrical surfaces; The magnetic pulling force is only produced by the action of the inner stator core 8 on the rotor 7 , and the torque is jointly produced by the inner stator core 8 and the outer stator core 6 . Other compositions and connections are the same as in the first embodiment. By controlling the current of the stator winding 9 in the inner stator core 8, an appropriate axial displacement of the rotor can be obtained to increase the air gap, thereby weakening the air-gap magnetic field and realizing a weak magnetic field expansion. At the same time, the stator winding of the outer stator core 6 9. Wi...

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Abstract

The invention relates to a double-stator conical adjustable air gap permanent magnet motor, which relates to the field of motors and solves the problem that the prior permanent magnet motor with a conventional structure has low efficiency. An outer stator core, a rotor and an inner stator core are coaxially sleeved together from outside to inside in turn, equal inside air gaps and outer air gaps are formed between the stator core and the rotor, both the outer surface of the inner stator core and the inner surface of the rotor are conical surfaces or cylindrical surfaces, and both the outer surface of the rotor and the inner surface of the outer stator core are conical surfaces or cylindrical surfaces; and a rotor slideway is arranged on an annular opening of a rotor output shaft of a supporting rack, the other rotor slideway is arranged at the end position of an inner rotor of the supporting rack, the rotor output shaft passes through a rotor slideway and is fixed on the supporting rack, the end part of the rotor passes through the other rotor slideway and is fixed in the supporting rack, and the rotor also comprises an air gap adjusting mechanism which is arranged between the end part of the rotor and the other rotor slideway. The double-stator conical adjustable air gap permanent magnet motor has the advantages of good adjusting performance, wide speed-expanding range and sufficient torque.

Description

technical field [0001] The invention relates to the field of motors, in particular to a double-stator conical permanent magnet motor with adjustable air gap. Background technique [0002] The permanent magnet motor with traditional structure mostly achieves the goal of field-weakening speed-up by adjusting the stator current. Although the field-weakening speed expansion can be achieved, the efficiency of the motor decreases due to the increase of the stator current and the direct-axis armature current, which limits the speed range of the system. further broaden. Contents of the invention [0003] In order to solve the problem of reduced efficiency of the existing traditional structure permanent magnet motor, the invention proposes a double-stator conical permanent magnet motor with adjustable air gap. [0004] The invention includes a stator, a rotor, a support frame and two rotor slideways; the stator includes an outer stator core, an inner stator core and stator winding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/04
Inventor 柴凤程树康裴宇龙刘伟亮
Owner HARBIN INST OF TECH
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