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Integrated rotor air path structure of high-power motor

An integral rotor, high-power technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, electrical components, etc., can solve the problems of easily damaged winding insulation performance, reduce winding electric density, etc., to reduce winding electric density, reduce The degree of insulation and the effect of reducing ventilation noise

Inactive Publication Date: 2015-04-15
CSIC ELECTRICAL MACHINERY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-power motor integrated rotor air passage structure, which solves the technical problems of easily damaging the insulation performance of the winding and reducing the electrical density of the winding existing in the heat dissipation air passage of the existing integrated rotor.

Method used

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  • Integrated rotor air path structure of high-power motor

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Embodiment Construction

[0010] The present invention is described in detail below in conjunction with accompanying drawing:

[0011] A high-power motor integral rotor wind path structure, comprising an integral rotor core 1, on which the integral rotor core 1 is respectively provided with a ventilation groove 2 and a winding inlay groove 3, and at the bottom of the winding inlay groove 3 is provided with a winding inlay groove bottom The ventilation groove 4 is provided with semi-conical radial air passages 5 at intervals on both inner walls of the winding mosaic groove 3, and the bottom end of the semi-conical radial air passage 5 communicates with the ventilation groove 4 at the bottom of the winding mosaic groove. A winding 6 is arranged in the winding embedding groove 3 , and a slot wedge 7 is arranged on the top of the winding embedding groove 3 .

[0012] The number of semi-conical radial ventilation passages 5 arranged at intervals on the inner sidewall of the middle part of the winding embedd...

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Abstract

The invention discloses an integrated rotor air path structure of a high-power motor, and solves the problems that the insulation performance of a winding has high probability of damage and the current density of the winding is reduced of an existing heat dissipation air duct of an integrated type rotor. The integrated rotor air path structure of the high-power motor comprises an integrated rotor iron core (1), wherein a ventilating slot (2) and a winding embedding slot (3) are respectively formed in the integrated rotor iron core (1); a winding embedding slot bottom ventilating slot (4) is formed in the bottom of the winding embedding slot (3); semicircular conical radial ventilating ducts (5) are formed in two inner side walls of the winding embedding slot (3) at an interval; the bottom ends of the semicircular conical radial ventilating ducts (5) are communicated with the winding embedding slot bottom ventilating slot (4); a winding (6) is arranged in the winding embedding slot (3); a slot wedge (7) is arranged at the top end of the winding embedding slot (3). The integrated rotor air path structure is very obvious in cooling effect.

Description

technical field [0001] The invention relates to an air path of a motor rotor, in particular to an air path of an integral rotor of a high-power motor. Background technique [0002] For motors with high power and wide speed range, since the speed is not constant, in order to avoid resonance within its speed range, the natural vibration frequency of the motor rotor should be staggered from the speed range. It is necessary to consider the strength and stiffness of the motor rotor and solve the fixing problem at the end of the winding. The rotor is designed as an integral rotor in which the motor shaft and the rotor core are integrated. The heat dissipation of this high-power integrated rotor has become the main problem. The existing technology is to form a cooling air path by opening axial ventilation auxiliary slots at the bottom of the stator winding slots, and opening radial ventilation slots on the windings. This method is easy to damage. The insulation performance of the ...

Claims

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Application Information

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IPC IPC(8): H02K1/32
CPCH02K1/32H02K1/265
Inventor 成玲燕王淑英杨立李改英温俊伟王肖肖王金松
Owner CSIC ELECTRICAL MACHINERY SCI & TECH
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