CN106208542A - A kind of permanent-magnet synchronous motor rotor surface temperature measurement device - Google Patents
A kind of permanent-magnet synchronous motor rotor surface temperature measurement device Download PDFInfo
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- CN106208542A CN106208542A CN201610664379.5A CN201610664379A CN106208542A CN 106208542 A CN106208542 A CN 106208542A CN 201610664379 A CN201610664379 A CN 201610664379A CN 106208542 A CN106208542 A CN 106208542A
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- fibre
- optical probe
- motor
- rotor
- temperature sensor
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Abstract
A kind of permanent-magnet synchronous motor rotor surface temperature measurement device, including multiple fibre-optical probes and fibre-optical probe infrared temperature sensor one to one and analysis and processing module, described fibre-optical probe is embedded in motor stator wire casing, the axis direction of fibre-optical probe is identical with the radial direction of rotor, each fibre-optical probe is connected to the infrared temperature sensor of correspondence respectively by optical fiber, and infrared temperature sensor is then connected to analysis and processing module.The present invention is by gathering the infrared ray that rotor self sends inside permasyn morot, it is judged that and the temperature field of analysis motor internal rotor, to facilitate the research to permagnetic synchronous motor temperature field, it is ensured that motor plays the highest service efficiency in the secure state.
Description
Technical field
The present invention relates to a kind of temperature measuring equipment, specifically a kind of permanent-magnet synchronous motor rotor surface temperature measurement dress
Put.
Background technology
Permasyn morot power factor is high, and efficiency is high, progressively replaces AC induction motor in many occasions.The fewest
Number developed country begins to use permanent-magnet synchronizing traction motor as the power source of high-speed railway.Nan Che Zhuzhou Electric Locomotive Institute
Company limited has also broken through this difficult problem, and is successfully delivered for use in Subway Line 1, Changsha.For avoiding water, dust, iron filings etc.
Corrosion electrical motor interior permanent magnets, magneto uses full-closed structure.Due to the permanent magnet traction motor merit used in track traffic
Rate is usually more than 500KW, and caloric value is big, and the permanent magnet material in rotor is under the mal-conditions such as high temperature, it may occur however that lose
The possibility of magnetic.Loss of excitation is there is at high-speed cruising, it will losing the ability of regenerative braking, braking distance may be up to once train
Nearly hundred kilometers.Temperature control is the bottleneck on permanent-magnet synchronizing traction motor uses.The rotor portion of most of magnetoes is mainly by forever
Magnet, rotor core, rotor pressing ring, radiating ribs form, without coil；Stationary part mainly has stator winding, stator core, no
Containing permanent magnet.At present, rarely to the operating thermometric equipment of permasyn morot internal rotor.There are other patent Shens
Person please propose to arrange infrared thermometer in motor, but belong to strong electromagnetic interference environment in motor, especially for powerful
Traction electric machine, electronic circuit may work, and the narrow space in motor also turns sensor for peace and brings a difficult problem.
Summary of the invention
Use the bottleneck run into for above-mentioned permanent-magnet synchronizing traction motor, the present invention provides a kind of permasyn morot
Rotor surface temperature measurement apparatus,
To achieve these goals, present invention employs techniques below scheme:
A kind of permanent-magnet synchronous motor rotor surface temperature measurement device, including multiple fibre-optical probes and fibre-optical probe one
The infrared temperature sensor of one correspondence and analysis and processing module,
Described fibre-optical probe is embedded in motor stator wire casing, the radial direction phase of the axis direction of fibre-optical probe and rotor
With, each fibre-optical probe is connected to the infrared temperature sensor of correspondence respectively by optical fiber, and infrared temperature sensor connects again
It is connected to analysis and processing module.
Each fibre-optical probe described is along the axial equidistant installation of motor, and each fibre-optical probe is the most uniform
Distribution.
Compared with prior art, the beneficial effect that the present invention possesses:
The present invention is by gathering the infrared ray that rotor self sends inside permasyn morot, it is judged that and analyze motor
The temperature field of internal rotor, to facilitate the research to permagnetic synchronous motor temperature field, it is ensured that motor plays the highest in the secure state
Service efficiency.
Accompanying drawing explanation
Fig. 1 is motor rotor temperature measuring equipment structural principle block diagram of the present invention.
Fig. 2 is the cut-away view of permagnetic synchronous motor.
Fig. 3 is the axially mounted position view of fibre-optical probe.
Fig. 4 is fibre-optical probe circumference installation site schematic diagram.
In figure, 1, fibre-optical probe, 2, stator slot, 3, radiator fan, 4, stator core, 5, stator winding, 6, rotor, 7,
Rotating shaft, 8, support.
Detailed description of the invention
Below by embodiment, technical scheme is further elaborated.
Embodiment 1
A kind of permanent-magnet synchronous motor rotor surface temperature measurement device, including multiple fibre-optical probes 1 and fibre-optical probe one
The infrared temperature sensor of one correspondence and analysis and processing module,
Described fibre-optical probe 1 is embedded in motor stator wire casing 2, the axis direction of fibre-optical probe 1 and the footpath of rotor
To identical, each fibre-optical probe is connected to the infrared temperature sensor of correspondence, infrared temperature sensor respectively by optical fiber
It is then connected to analysis and processing module.
Each fibre-optical probe described is along the axial equidistant installation of motor, and each fibre-optical probe is the most uniform
Distribution.
Embodiment 2
Assuming 9 groove 8 pole three-phase permanent magnetic synchronous motors, rotor length is 500mm, diameter 400mm, adjacent wire casing angle
It it is 40 degree.The present embodiment 9 probes and 9 infrared temperature sensors monitor the thermo parameters method of this rotor.
Probe distributing position as shown in accompanying drawing 3 and accompanying drawing 4, probe be arranged in motor stator wire casing, fibre-optical probe from
One end of motor is risen, and turns one every 80mm peace in the axial direction, and two ends are all installed, and adjacent two probes are in the circumferential along same
One direction is at a distance of 40 degree.
When motor stator rotates, fibre-optical probe gathers the infrared ray that stator surface sends, and passes through fiber-optic transfer.Optical fiber and electricity
The winding coil of machine is together embedded in wire casing, and eventually arrives at 9 infrared temperature sensors outside motor.Infrared ray sensor
According to the sample frequency set, the temperature in motor is measured.Sample frequency need to stagger with the rotating speed of motor.Such as motor
Rotating speed is 3000 rpms, i.e. 50 revolution per seconds, then sample frequency can not be 50hz, it is proposed that be set to as 48hz or 52hz.
The Numerical Temperature collected is input to processing module process, is continuous print temperature with limited numerical fitting
Degree field distribution, to judge whether permanent magnet has the risk of loss of excitation.
Operation principle:
Multiple fibre-optical probe, the axis of fibre-optical probe it is evenly arranged in the axial direction in the stator of permasyn morot
Radial direction along rotor.The infrared ray that the rotor surface received is sent by fibre-optical probe is by infrared to outside motor of fiber-optic transfer
In line temperature sensor, infrared temperature sensor is converted into the signal of telecommunication, enters analysis module and arranges and analyze, point
Analysis result can be used for research or instructs the control of motor as feedback signal.
The optical fiber that fibre-optical probe is drawn and coil of stator of motor are together embedded in the wire casing of stator, wearing through motor housing
String holes arrives outside motor.Entering the processing module outside motor after multifiber integrated optical beam, each optical fiber is respectively
Correspondence is received in an infrared temperature sensor, and the infrared signal received is converted to telecommunications by infrared temperature sensor
Number, it is sent in analysis module be analyzed and process.
By limited sensor matching temperature field continuous distribution on electrical axis direction, its fitting precision and sensing
The number of device is correlated with.Owing to rotor is made up of metal material, heat conductivity is good, and the variable gradient in temperature field is little, therefore thinks only
Need to arrange in the axial direction and several can meet required precision.In motor work process, rotor about axis rotates.Revolve at rotor
During circling, single sensor completes the temperature survey of a certain circumference of rotor outer surface.Utilize multiple circumference recorded
On temperature value, obtained the temperature field of whole rotor outer surface by interpolation calculation.
Owing to probe has certain volume, therefore different probe is except, in addition to being equally spaced along electrical axis direction, going back
Stagger in the circumferential direction of motor certain angle, to reduce the impact arranging probe to coil of stator of motor.
Claims (2)
1. a permanent-magnet synchronous motor rotor surface temperature measurement device, it is characterised in that include multiple fibre-optical probe and light
Fibre is popped one's head in infrared temperature sensor and analysis and processing module one to one,
Described fibre-optical probe is embedded in motor stator wire casing, and the axis direction of fibre-optical probe is identical with the radial direction of rotor,
Each fibre-optical probe is connected to the infrared temperature sensor of correspondence respectively by optical fiber, and infrared temperature sensor is then connected to
Analysis and processing module.
2. temperature measuring equipment as claimed in claim 1, each fibre-optical probe described along the axial equidistant installation of motor, and
And each fibre-optical probe is the most also uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664379.5A CN106208542A (en) | 2016-08-12 | 2016-08-12 | A kind of permanent-magnet synchronous motor rotor surface temperature measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664379.5A CN106208542A (en) | 2016-08-12 | 2016-08-12 | A kind of permanent-magnet synchronous motor rotor surface temperature measurement device |
Publications (1)
| Publication Number | Publication Date |
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| CN106208542A true CN106208542A (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610664379.5A Pending CN106208542A (en) | 2016-08-12 | 2016-08-12 | A kind of permanent-magnet synchronous motor rotor surface temperature measurement device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816992A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | The survey rotation mechanism of frequency control motor |
| CN109115346A (en) * | 2018-06-20 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of rotatable parts temperature monitoring system |
| CN109253821A (en) * | 2018-11-01 | 2019-01-22 | 长沙龙力自控技术有限公司 | A kind of rotor temperature measuring equipment |
| CN109253806A (en) * | 2018-11-01 | 2019-01-22 | 长沙龙力自控技术有限公司 | A kind of rotor non-contact temperature measuring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459637Y (en) * | 2000-12-20 | 2001-11-14 | 任心志 | Temp. measuring instrument for motor rotor |
| CN101275871A (en) * | 2008-05-16 | 2008-10-01 | 清华大学 | High speed rotating permanent magnetism synchronous electric machine rotor temperature distribution measuring method |
| CN103314277A (en) * | 2010-11-24 | 2013-09-18 | 维斯塔斯风力系统集团公司 | Long fibre optic sensor system in wind turbine component |
| JP2016065763A (en) * | 2014-09-24 | 2016-04-28 | マツダ株式会社 | Temperature measurement device of electric motor |
-
2016
- 2016-08-12 CN CN201610664379.5A patent/CN106208542A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459637Y (en) * | 2000-12-20 | 2001-11-14 | 任心志 | Temp. measuring instrument for motor rotor |
| CN101275871A (en) * | 2008-05-16 | 2008-10-01 | 清华大学 | High speed rotating permanent magnetism synchronous electric machine rotor temperature distribution measuring method |
| CN103314277A (en) * | 2010-11-24 | 2013-09-18 | 维斯塔斯风力系统集团公司 | Long fibre optic sensor system in wind turbine component |
| JP2016065763A (en) * | 2014-09-24 | 2016-04-28 | マツダ株式会社 | Temperature measurement device of electric motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816992A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | The survey rotation mechanism of frequency control motor |
| CN109115346A (en) * | 2018-06-20 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of rotatable parts temperature monitoring system |
| WO2019241977A1 (en) * | 2018-06-20 | 2019-12-26 | 中国科学院深圳先进技术研究院 | Rotating component temperature monitoring system |
| CN109253821A (en) * | 2018-11-01 | 2019-01-22 | 长沙龙力自控技术有限公司 | A kind of rotor temperature measuring equipment |
| CN109253806A (en) * | 2018-11-01 | 2019-01-22 | 长沙龙力自控技术有限公司 | A kind of rotor non-contact temperature measuring device |
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Application publication date: 20161207 |