Permanent magnet temperature on-line detection method and device

A detection method and permanent magnet technology, applied in the temperature measurement of moving solids, etc., can solve the problems of long test time and large test volume

Active Publication Date: 2014-09-10
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of this application is to provide a permanent magnet temperature online detection method and device, the temperature of the permanent magnet is detected o

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
  • Permanent magnet temperature on-line detection method and device
  • Permanent magnet temperature on-line detection method and device
  • Permanent magnet temperature on-line detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] see figure 1 The flow chart of Embodiment 1 of an online detection method for permanent magnet temperature provided by the present application is shown, and the permanent magnet is applied to a permanent magnet motor.

[0048] This method is specifically realized by the following steps:

[0049] Step S101: Obtain the rotational speed and coun...

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 provides a permanent magnet temperature on-line detection method and device which are applied to a permanent magnet motor. The permanent magnet temperature on-line detection method comprises the steps that the rotating speed and the counter electromotive force of the permanent magnet motor are acquired; the temperature value of a permanent magnet is obtained through calculation according to a preset temperature calculating rule, the rotating speed and the counter electromotive force, and the preset temperature calculating rule represents the corresponding relation of the rotating speed, the counter electromotive force and the temperature value of the permanent magnet. In the detection process, only the rotating speed and the counter electromotive force of the permanent magnet motor need to be acquired and calculated, the temperature of the permanent magnet can be directly obtained, the measuring method is simple, the testing amount is small, and the testing time is short. Moreover, due to the fact that high-cost devices such as a thermal infrared imager do not need to be used, and the testing cost is lowered. In the measuring process, constant temperature maintaining of cooling liquid of the motor is not involved, and operation is easy. In addition, the permanent magnet temperature on-line detection device is achieved in practical, and the measuring structure is simple.

Description

technical field [0001] The present application belongs to the field of permanent magnet motors, and in particular relates to a permanent magnet temperature online detection method and device. Background technique [0002] Permanent magnet motors have the advantages of light weight, simple structure, low loss, and high efficiency, and are widely used in various fields such as electric vehicles, rail transit, wind power generation, aerospace, and daily life. [0003] However, in actual operation, irreversible demagnetization of the permanent magnet may occur due to high temperature and other reasons, which leads to a decrease in the no-load back electromotive force, deterioration of the motor performance, and affects the normal operation of the motor. Therefore, real-time online detection of the permanent magnet motor and the temperature of the permanent magnet during operation are particularly important to improve the operating reliability of the permanent magnet motor. [0...

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): G01K13/04
Inventor 冯江华刘春秀符敏利李益丰许峻峰陈致初何思源李伟业史文波辛本雨罗英露
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap