Mixed ventilation cooling system and method for permanent magnet traction motor

A traction motor, ventilation and cooling technology, applied in the direction of cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems of low indirect cooling efficiency of permanent magnets, affect the heat transfer of permanent magnets, and it is difficult to ensure the heat dissipation capacity, etc., to achieve Balance temperature rise, enhance heat dissipation, and ensure uniformity

Active Publication Date: 2017-02-22
SHENYANG POLYTECHNIC UNIV
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the needs of the installation process and production process, there is a large gap between the permanent magnet and the installation slot opened in the rotor core, which affects the heat transfer of the permanent magnet.
The indirect cooling efficiency of the traditional permanent magnet motor axial ventilation system for the permane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixed ventilation cooling system and method for permanent magnet traction motor
  • Mixed ventilation cooling system and method for permanent magnet traction motor
  • Mixed ventilation cooling system and method for permanent magnet traction motor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] The present invention will be further explained below in conjunction with the drawings:

[0031] The invention proposes a mixed ventilation cooling system for a permanent magnet traction motor, such as Figure 1~Figure 5 As shown, the bearing 17 of the motor is installed between the end cover 20 and the rotating shaft 21, the stator coil 12 is wound in the slot of the stator core 19, and the permanent magnet 3 is built in the rotor core 18. The cooling system is divided into radial ventilation system and axial ventilation system.

[0032] The axial ventilation system includes the laminated rotor core laminated with the rotor axial ventilation hole configuration to form the rotor axial ventilation hole 2. The stator core laminated laminated stator with the stator axial ventilation hole configuration is laminated to form the stator shaft The axial ventilation hole 5 and the axial air path centrifugal fan 4; the axial air path centrifugal fan 4 is installed at the non-driving e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a mixed ventilation cooling system and method for a permanent magnet traction motor. The cooling system consists of a radial ventilation cooling system and an axial ventilation cooling system which are independently driven to work, the radial ventilation cooling system is used for directly blowing and cooling a rotor and a permanent magnet, and the axial ventilation cooling system is used for cooling an end winding and balancing the temperature rise of the whole motor. According to the system and the method, radial ventilation and axial ventilation are separated in terms of mass transfer, and the wind resistance loss of the ventilation systems is relatively low; seriously heated positions in the motor are cooled by the two sets of ventilation systems respectively, so that high cooling performance is achieved; the radial ventilation cooling system is divided into two parts, namely, an air inlet passage and an air outlet passage, by a separation plate, and the temperature rise of cooling air entering each radial air vent is similar, so that axial balance of the temperature rise of the motor is ensured; circumferential balance of the temperature rise of the motor is ensured by the axial ventilation cooling system. The system and the method have the characteristics of good motor interior cooling effects and good motor temperature rise balance, and are suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, mainly to a motor cooling system, in particular to a cooling system for a permanent magnet traction motor of small and medium-sized rail transit, public transportation, and electric vehicles, specifically to a cooling system with two sets of axial and radial ventilation paths. A permanent magnet traction motor cooling system and method. Background technique [0002] Permanent magnet motors have the characteristics of high efficiency and high power density, and can maintain high efficiency and power factor under light-load operation conditions. Compared with asynchronous motors as traction motors, they can effectively save energy in the long-term operation of electric vehicles. . Since the electric vehicle motor is controlled by a frequency converter and the operating frequency is often high, there are a large number of space harmonics and time harmonics in the motor rotor and permane...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02K1/32H02K1/20H02K9/02
CPCH02K1/20H02K1/32H02K9/02
Inventor 佟文明朱高嘉韩雪岩吴胜男宁杰唐任远
Owner SHENYANG POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products