Single transplanted magnet steel permanent magnet synchronous motor

A permanent magnet synchronous, single-planted magnetic steel technology, applied in the field of electric motors, can solve the problems of poor demagnetization resistance, increased cost, increased amount of magnetic steel, etc., and achieves obvious advantages in energy saving, self-starting, and high mechanical strength.

Inactive Publication Date: 2009-04-29
XUZHOU CURRENCY MAGNETOELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The permanent magnet synchronous motor has the characteristics of light weight, high performance, high efficiency and energy saving, and has a wide market space, but the number of permanent magnet synchronous motors in actual operation accounts for a small proportion
The existing permanent magnet rotor structure needs to implant magnets opposite to the adjacent poles under each pole, which increases the amount of magnets used and increases the cost. Moreover, the rotor has low mechanical strength and poor resistance to demagnetization, which affects the stability of operation. Sex and reliability, which directly limit the use and promotion

Method used

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  • Single transplanted magnet steel permanent magnet synchronous motor
  • Single transplanted magnet steel permanent magnet synchronous motor
  • Single transplanted magnet steel permanent magnet synchronous motor

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Embodiment Construction

[0017] A permanent magnet synchronous motor with a single-planted magnet includes a rotating shaft 1, a bearing 2, an end cover 3, a stator core 5, and a rotor core 6 coupled with the rotating shaft 1; : A slot space 7 is opened on the rotor core 6; permanent magnets of the same polarity are placed in the slot space 7; the number of the permanent magnets is equal to the number of pole pairs of the motor. The space included angle between the slot spaces 7 is α=360 / p degrees, and p is the number of pole pairs of the motor. A rotor slot 13 is provided on the rotor core 6; aluminum and / or copper connected to the end ring 9 are cast into the rotor slot 13. There is a magnetic bridge a between the slot space 7 and the rotor slot 13; the magnetic bridge a is between 1.5 and 2.0 mm; the slot space 7 is a straight slot, an arc slot, a V-shaped slot, a U-shaped slot or a W -Shaped slot; the pole arc coefficient of the permanent magnet steel is between 0.95 and 1.0. A cooling fan 10 is provi...

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Abstract

The invention relates to a permanent magnetic synchronous motor of single magnetic steel, belonging to the technical field of motors. The motor comprises a rotation shaft (1), a bearing (2) which is matched with the rotation shaft (1), an end cover (3), a stator core (5) and a rotor core (6) which is matched with the rotation shaft (1); the motor is characterized in that the rotor core (6) is provided with a trough space (7) which is internally provided with permanent magnetic steels with the same polarity; the quantity of the permanent magnetic steels are identical to the pole pair number of the motor; the spatial angle between the trough spaces (7) is 360/p degree; wherein, p is the pole pair number of the motor; the rotor core (6) is provided with a rotor trough (13) which is internally cast by aluminium and/or copper which are connected with an end ring (9). The permanent magnetic synchronous motor has high mechanical strength, stable and reliable running operation and obvious energy-saving advantage.

Description

Technical field [0001] The invention belongs to the technical field of motors, and particularly relates to a permanent magnet synchronous motor with a single planted magnet. Background technique [0002] The permanent magnet synchronous motor has the characteristics of light weight, high performance, high efficiency and energy saving, and has a wide market space, but the actual number of permanent magnet synchronous motors in operation accounts for a small proportion. The existing permanent magnet rotor structure must be implanted under each magnetic pole with magnets of opposite polarity to the adjacent magnetic poles, which increases the amount of magnets and the cost, and the rotor has low mechanical strength and poor anti-demagnetization ability, which affects stable operation Sex and reliability directly limit the use and promotion. Summary of the invention [0003] The present invention aims to overcome the shortcomings of the prior art and provide a permanent magnet synch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/12H02K1/27H02K21/14H02K9/06
Inventor 安跃军孙昌志
Owner XUZHOU CURRENCY MAGNETOELECTRICITY
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