CN110545014A - Permanent magnet motor rotor temperature detection device - Google Patents
Permanent magnet motor rotor temperature detection device Download PDFInfo
- Publication number
- CN110545014A CN110545014A CN201810529727.7A CN201810529727A CN110545014A CN 110545014 A CN110545014 A CN 110545014A CN 201810529727 A CN201810529727 A CN 201810529727A CN 110545014 A CN110545014 A CN 110545014A
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- CN
- China
- Prior art keywords
- temperature detection
- permanent magnet
- magnet motor
- detection unit
- rotor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
Abstract
The invention discloses a temperature detection device for a permanent magnet motor rotor, which comprises a temperature detection unit fixedly arranged in a lightening hole of a permanent magnet motor rotor core and a temperature detection unit, wherein the temperature detection unit is used for detecting the temperature of the rotor core in real time; and the display unit is connected with the temperature detection unit in a wireless communication manner and is used for displaying the temperature detected by the temperature detection unit in real time. The permanent magnet motor rotor temperature detection device has the advantages of simple structure, accurate and quick detection and the like.
Description
Technical Field
The invention mainly relates to the technical field of motor temperature measurement, in particular to a permanent magnet motor rotor temperature detection device.
Background
The permanent magnet synchronous motor does not need rotor magnetic field electric excitation, the excitation mode is permanent magnet excitation, and due to the particularity of the permanent magnet, the motor needs to prevent foreign matters such as dust, moisture, acid, alkali and the like from entering the motor to damage the permanent magnet, particularly, metal powder generated by friction between wheels and steel rails during the operation of a rail locomotive vehicle enters the motor and is adsorbed on the surface of a rotor of the permanent magnet motor to cause the air gaps of the stator and the rotor of the motor to be reduced and even to sweep the chamber, so the permanent magnet synchronous traction motor usually adopts a fully-closed structure. Because the permanent magnet synchronous traction motor usually adopts a fully-closed cooling structure, the heat dissipation condition of a permanent magnet rotor is poor, the rotor can be influenced by the radiation heat of a stator core, so that the temperature of the permanent magnet is higher, and the permanent magnet can lose magnetism at high temperature, and once the permanent magnet is subjected to irreversible demagnetization or lose magnetism, the performance of the permanent magnet motor is reduced or even completely lost, so that the operation reliability of the motor is seriously influenced, and therefore, the temperature of the permanent magnet of the motor rotor is necessary to detect.
Because the permanent magnet synchronous traction motor usually adopts a fully closed structure, an infrared thermometer cannot be used for measuring the temperature of a rotor core of the motor; temperature sensors adopted for general temperature measurement comprise NTC, PT100, thermocouples and the like, are all wired temperature sensors, and are not suitable for temperature measurement of rotors and other rotating bodies; in addition, the air gap of the permanent magnet motor is small, and the wireless temperature sensor cannot be installed sufficiently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides a permanent magnet motor rotor temperature detection device which is real-time in temperature detection, rapid and accurate and simple and convenient to install.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a permanent magnet motor rotor temperature detection device, comprising:
The temperature detection unit is fixedly arranged in a weight reduction hole of the rotor core of the permanent magnet motor and is used for detecting the temperature of the rotor core in real time; and
And the display unit is connected with the temperature detection unit in a wireless communication manner and is used for displaying the temperature detected by the temperature detection unit in real time.
as a further improvement of the above technical solution:
the temperature detection unit is arranged in a weight reduction hole close to the position of the core axis of the rotor iron core.
The temperature detection unit is adhered to the weight reduction hole.
A plane mounting groove is formed in the lightening hole, and the temperature detection unit is adhered to the plane mounting groove.
The temperature detection unit is arranged in an installation seat, and the installation seat is cylindrical and is arranged in the lightening hole in an expanding manner.
The temperature detection unit is connected with the display unit through Bluetooth communication.
The temperature detection unit is a wireless temperature sensor made of a non-magnetic material.
the display unit is a display.
The temperature detection device is characterized by further comprising an alarm unit, wherein the alarm unit is connected with the temperature detection unit and used for giving an alarm prompt when the temperature of the rotor core exceeds a preset value.
the alarm unit is an audible and visual alarm.
Compared with the prior art, the invention has the advantages that:
According to the permanent magnet motor rotor temperature detection device, the temperature detection unit is arranged in the weight reduction hole of the rotor core, so that the temperature of the rotor core can be measured accurately and quickly in real time, and the device is convenient to install; through linking to each other with the display element wireless communication that sets up in permanent-magnet machine outside, do not need the electric wire transmission to be suitable for and install in the rotor iron core of pivoted.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
Fig. 2 is a schematic view of an installation structure of the temperature detection unit according to the present invention.
The reference numbers in the figures denote: 1. a rotor core; 2. lightening holes; 201. mounting grooves; 3. a temperature detection unit; 4. a display unit.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1 and fig. 2, the temperature detection device for a permanent magnet motor rotor of the present embodiment is suitable for a permanent magnet motor rotor core 1 with weight-reducing holes 2, and the permanent magnet may be built-in or surface-mounted, and specifically includes a temperature detection unit 3 fixedly installed in the weight-reducing holes 2 of the permanent magnet motor rotor core 1, and configured to detect the temperature of the rotor core 1 in real time; and the display unit 4 is connected with the temperature detection unit 3 in a wireless communication manner and is used for displaying the temperature detected by the temperature detection unit 3 in real time. According to the permanent magnet motor rotor temperature detection device, the temperature detection unit 3 is arranged in the lightening hole 2 of the rotor core 1, so that the temperature of the rotor core 1 can be measured accurately and quickly in real time, and the permanent magnet motor rotor temperature detection device is convenient to install; through linking to each other with the display element 4 wireless communication that sets up in the permanent-magnet machine outside, do not need the electric wire transmission to be suitable for and install in pivoted rotor core 1.
In this embodiment, the temperature detection unit 3 is installed in the lightening hole 2 near the axial position of the rotor core 1, so as to improve the accuracy of temperature detection.
As shown in fig. 2, in the present embodiment, the temperature detection unit 3 is stuck in the lightening hole 2. In order to ensure the firm adhesion, a plane installation groove 201 is arranged inside the lightening hole 2, and the temperature detection unit 3 is adhered on the plane installation groove 201. Specifically, firstly, installing grooves 201 are formed in lightening holes 2 of a rotor punching sheet according to the size of a temperature detection unit 3; before the rotor pressing ring is installed, the temperature detection unit 3 is filled in the installation groove 201 after being coated with glue. Of course, in other embodiments, the temperature detecting unit 3 may be mounted in a mounting seat having a cylindrical shape to be tightly mounted in the lightening hole 2.
In this embodiment, the temperature detecting unit 3 is a wireless temperature sensor made of a non-magnetic material, wherein no magnetic metal exists, which can avoid the influence on the magnetic field of the rotor, and the wireless temperature sensor also has high rigidity and high strength; the wireless temperature sensor is connected with the display unit 4 through Bluetooth communication. The display unit 4 is a display and is installed outside the permanent magnet motor.
In this embodiment, the device further includes an alarm unit (such as an audible and visual alarm, not shown in the figure), and the audible and visual alarm is connected to the temperature detection unit 3, and is used for giving an audible and visual alarm when the temperature of the rotor core 1 exceeds a preset value, so as to avoid damage to the permanent magnet due to overhigh temperature.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. A permanent magnet motor rotor temperature detection device, characterized by includes:
The temperature detection unit (3) is fixedly arranged in a lightening hole (2) of the rotor core (1) of the permanent magnet motor and is used for detecting the temperature of the rotor core (1) in real time; and
And the display unit (4) is connected with the temperature detection unit (3) in a wireless communication manner and is used for displaying the temperature detected by the temperature detection unit (3) in real time.
2. the rotor temperature detection device of the permanent magnet motor according to claim 1, wherein the temperature detection unit (3) is installed in a lightening hole (2) close to the axial position of the rotor core (1).
3. The rotor temperature detection device of a permanent magnet motor according to claim 1 or 2, characterized in that the temperature detection unit (3) is stuck in the lightening hole (2).
4. The rotor temperature detection device of the permanent magnet motor as claimed in claim 3, wherein a plane installation groove (201) is formed in the lightening hole (2), and the temperature detection unit (3) is adhered to the plane installation groove (201).
5. The rotor temperature detection device of a permanent magnet motor according to claim 1 or 2, characterized in that the temperature detection unit (3) is mounted in a mounting seat which is cylindrical for expansion mounting in the lightening hole (2).
6. The rotor temperature detection device of the permanent magnet motor as claimed in claim 1 or 2, wherein the temperature detection unit (3) is connected with the display unit (4) through Bluetooth communication.
7. The rotor temperature detection device of the permanent magnet motor according to claim 1 or 2, wherein the temperature detection unit (3) is a wireless temperature sensor made of a non-magnetic material.
8. The device for detecting the rotor temperature of a permanent magnet motor according to claim 1 or 2, wherein the display unit (4) is a display.
9. The permanent magnet motor rotor temperature detection device according to claim 1 or 2, further comprising an alarm unit, wherein the alarm unit is connected with the temperature detection unit (3) and used for giving an alarm prompt when the temperature of the rotor core (1) exceeds a preset value.
10. The device for detecting the rotor temperature of the permanent magnet motor according to claim 9, wherein the alarm unit is an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529727.7A CN110545014A (en) | 2018-05-29 | 2018-05-29 | Permanent magnet motor rotor temperature detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529727.7A CN110545014A (en) | 2018-05-29 | 2018-05-29 | Permanent magnet motor rotor temperature detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110545014A true CN110545014A (en) | 2019-12-06 |
Family
ID=68701052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810529727.7A Pending CN110545014A (en) | 2018-05-29 | 2018-05-29 | Permanent magnet motor rotor temperature detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110545014A (en) |
Citations (11)
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|---|---|---|---|---|
| JP2009247084A (en) * | 2008-03-31 | 2009-10-22 | Hitachi Ltd | Rotary electric machine and vehicle |
| JP2011254581A (en) * | 2010-05-31 | 2011-12-15 | Aisin Seiki Co Ltd | Rotating electric machine |
| CN202759344U (en) * | 2012-08-06 | 2013-02-27 | 上海捷能汽车技术有限公司 | Motor with temperature sensing device and motor rotor temperature measurement system |
| CN103038984A (en) * | 2010-05-04 | 2013-04-10 | 瑞美技术有限责任公司 | Electric machine component temperature monitoring |
| JP2014176148A (en) * | 2013-03-07 | 2014-09-22 | Toyota Central R&D Labs Inc | Rotor with temperature measuring function |
| JP2014193007A (en) * | 2013-03-27 | 2014-10-06 | Toyota Central R&D Labs Inc | Motor with temperature measurement function |
| CN205070695U (en) * | 2015-11-06 | 2016-03-02 | 嘉兴职业技术学院 | Motor with alarm device |
| JP2016065763A (en) * | 2014-09-24 | 2016-04-28 | マツダ株式会社 | Temperature measurement device of electric motor |
| CN105577072A (en) * | 2016-02-26 | 2016-05-11 | 珠海格力电器股份有限公司 | Method and device for protecting permanent magnet motor rotor |
| CN106122443A (en) * | 2016-08-19 | 2016-11-16 | 苏州市华宁机械制造有限公司 | A kind of segmentation is from temperature control gear |
| CN207382079U (en) * | 2017-10-19 | 2018-05-18 | 哈尔滨理工大学 | A kind of speed permanent magnet synchronous motor rotor structure |
-
2018
- 2018-05-29 CN CN201810529727.7A patent/CN110545014A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009247084A (en) * | 2008-03-31 | 2009-10-22 | Hitachi Ltd | Rotary electric machine and vehicle |
| CN103038984A (en) * | 2010-05-04 | 2013-04-10 | 瑞美技术有限责任公司 | Electric machine component temperature monitoring |
| JP2011254581A (en) * | 2010-05-31 | 2011-12-15 | Aisin Seiki Co Ltd | Rotating electric machine |
| CN202759344U (en) * | 2012-08-06 | 2013-02-27 | 上海捷能汽车技术有限公司 | Motor with temperature sensing device and motor rotor temperature measurement system |
| JP2014176148A (en) * | 2013-03-07 | 2014-09-22 | Toyota Central R&D Labs Inc | Rotor with temperature measuring function |
| JP2014193007A (en) * | 2013-03-27 | 2014-10-06 | Toyota Central R&D Labs Inc | Motor with temperature measurement function |
| JP2016065763A (en) * | 2014-09-24 | 2016-04-28 | マツダ株式会社 | Temperature measurement device of electric motor |
| CN205070695U (en) * | 2015-11-06 | 2016-03-02 | 嘉兴职业技术学院 | Motor with alarm device |
| CN105577072A (en) * | 2016-02-26 | 2016-05-11 | 珠海格力电器股份有限公司 | Method and device for protecting permanent magnet motor rotor |
| CN106122443A (en) * | 2016-08-19 | 2016-11-16 | 苏州市华宁机械制造有限公司 | A kind of segmentation is from temperature control gear |
| CN207382079U (en) * | 2017-10-19 | 2018-05-18 | 哈尔滨理工大学 | A kind of speed permanent magnet synchronous motor rotor structure |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191206 |
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| RJ01 | Rejection of invention patent application after publication |