CN109038963A - Permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device and application - Google Patents
Permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device and application Download PDFInfo
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- CN109038963A CN109038963A CN201810845629.4A CN201810845629A CN109038963A CN 109038963 A CN109038963 A CN 109038963A CN 201810845629 A CN201810845629 A CN 201810845629A CN 109038963 A CN109038963 A CN 109038963A
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- magnetic field
- permanent
- temperature
- permanent magnet
- magnetic
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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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- 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
Abstract
The present invention relates to a kind of permanent-magnetism synchronous motor permanent magnetic temperatures and magnetic field real time on-line detection device and application, the device includes: sensor unit, including FPC plate and the multiple temperature sensors and multiple magnetic field sensors that are set on the FPC plate, it is axially grooved along rotor core at permanent magnet by being connected in rotor core, and FPC plate is fixed in slot, be distributed multiple temperature sensors and multiple magnetic field sensors axially along rotor core respectively and is contacted with permanent magnet；Signal acquisition process unit receives and handles the electric signal of sensor unit, and data are wirelessly transmitted to host computer for being fixed on motor shaft.Compared with prior art, the present invention solves the installation of sensor and the data transmission problems under electromagnetic environment on rotor, and permanent magnetism temperature and Distribution of Magnetic Field measure problem, realize that magneto continuously measures the multisensor of permanent magnet surfaces temperature and Distribution of Magnetic Field under each operating condition online.
Description
Technical field
The present invention relates to motor heat and magnetic field detection technology field, more particularly, to a kind of permanent-magnetism synchronous motor permanent magnetic body temperature
Degree and magnetic field real time on-line detection device.
Background technique
The variation of temperature and external magnetic field can all cause the variation of permanent magnet magnetic performance, high density magneto is small in size,
Armature-reaction is strong, heat flow density is high, so that there are irreversible demagnetization risks, especially Nd-Fe-B permanent magnetic material for permanent magnet in motor
Material, Curie temperature is relatively low, and irreversible demagnetization may occur under the action of high temperature and armature-reaction.Therefore, it grasps
The Temperature Distribution and magnetic property of permanent magnet of the magneto under various operating conditions are safe and reliable with important to guaranteeing
Value, to provide real data for magneto anti-demagnetization design and online anti-back magnetic control strategy design and support, and
Verify the validity of design.
Contact measurement and two kinds of non-cpntact measurement are broadly divided into for the method for rotor measurement at present.In contact measurement
Common temperature element mainly includes thermistor and thermocouple and platinum resistance thermometer sensor,.Contact measurement must solve temperature data and exist
Transmission under rotation status is connected by special measurement slip ring, the disadvantage is that increase the complexity of manufacture, and slip ring due to
Mechanical movement, carbon brush poor contact are easy to make swinging of signal.Non-cpntact measurement mainly includes photoelectricity thermometry and IR thermometry,
This kind of measurement method needs to install temperature sensing element to rotor portion in stator face, certain installation space is needed, for middle low power
Automobile-used high density magneto and be not suitable for.Temperature and external magnetic field condition are unevenly distributed permanent magnet in the axial direction simultaneously,
The distribution situation in permanent magnetism temperature and magnetic field can not be only obtained by shaft end or an intermediate measuring point.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of permanent magnet synchronous motors
Permanent magnetism temperature and magnetic field real time on-line detection device and application.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device, comprising:
Sensor unit, including FPC plate and the multiple temperature sensors and multiple magnetic field sensings that are set on the FPC plate
Device, it is axially grooved along rotor core at permanent magnet by being connected in rotor core, and FPC plate is fixed in slot, make multiple temperature
Degree sensor and multiple magnetic field sensors are axially distributed along rotor core respectively and contact with permanent magnet.
Signal acquisition process unit receives and handles the electric signal of sensor unit, and will for being fixed on motor shaft
Data are wirelessly transmitted to host computer.
Preferably, the FPC plate is in long strip, and one end is equipped with FPC connector, multiple temperature sensors and multiple magnetic fields
Sensor is uniformly distributed along FPC plate length direction respectively, and is connected with FPC connector.
Preferably, the temperature sensor selects PT100 platinum resistance thermometer sensor, and magnetic field sensor selects HG106C hall sensing
Device.The mode of welding that temperature sensor and magnetic field sensor can select is fixed on the one side of FPC plate.
Preferably, the signal acquisition process unit includes containing body and is set to and accommodates intracorporal temperature and magnetic field is adopted
Collection processing component, master control system component and Power Supply Assembly, the containing body are fixed on motor shaft, and FPC connector passes through FPC
Soft arranging wire is connected with temperature and magnetic field acquisition process component.
Preferably, temperature and magnetic field acquisition process component are by temperature acquisition processing module and magnetic field acquisition processing module group
At；The temperature acquisition processing module is built with discrete component, including constant current source power supply, amplifying circuit in the same direction, second order bar
Special Butterworth filter circuit and overvoltage crowbar.Constant current source power supply circuit powers to temperature sensor, when the temperature is changed, temperature
Degree resistance of sensor variation causes faint variation voltage signal to be transferred to amplifying circuit in the same direction to amplify signal, rear by second order bar
Special Butterworth filter circuit and overvoltage crowbar, finally make output signal be connected to controller；Temperature acquisition processing module is by outer
Portion's power supply power supply.The magnetic field acquisition processing module is built with discrete component, including the power supply of controllable constant-current source, differential amplification
Circuit, reference voltage circuit, voltage follower, filtering and overvoltage crowbar.On the one hand controllable constant current source circuit is Hall
Sensor power supply, on the other hand provides calibration for Hall sensor.Hall sensor output voltage is connected to differential amplifier circuit
And reference voltage circuit, then after reaching voltage follower, controller is connected to through filter circuit and overvoltage crowbar；Magnetic field acquisition
Processing module is powered by external power supply.
Preferably, the master control system component master chip, wireless transport module and module is locally stored, the master control
System component to being locally stored in module, and will pass through wireless transmission from temperature and the storage of the data of magnetic field acquisition process component
Module is sent to host computer, to carry out real-time display and store detection data.
Preferably, the master chip uses the STM32F103RET6 of ST company production, and the wireless transport module is adopted
With WIFI module, described is locally stored module using SD card.
Preferably, the Power Supply Assembly is battery power supply module, is made of lithium battery parallel connection, is sensor unit, temperature
Degree and magnetic field acquisition process component and master control system component provide power supply.
Preferably, the host computer is write using the TCP/IP module progress host computer of LabVIEW, realizes and believes WIFI
Number receiving, handle, display and store.
Preferably, the motor shaft is hollow shaft, and the containing body is connected to the shaft end of hollow shaft, hollow shaft side wall
Soft arranging wire entrance is offered, the FPC soft arranging wire enters through hollow shaft via soft arranging wire entrance and adopts with temperature and magnetic field
Collect processing component to be connected.
Preferably, the containing body is cylindrical metal container, the end of cylindrical metal container and the axis of hollow shaft
End connection.And with permanent magnet synchronous motor synchronous rotary.Using metal material container (such as aluminum), can play is prevented to temperature
With the electromagnetic interference of magnetic field acquisition process component and master control system component.
Preferably, the permanent magnet of the permanent magnet synchronous motor use V-shaped permanent magnet, the slot position in V-shaped forever
The outside of magnet, influence of the centrifugal force to temperature and magnetic field sensor when reducing high speed rotation.
The application of permanent-magnetism synchronous motor permanent magnetic temperature Yu the magnetic field real time on-line detection device, the device for pair
Temperature and magnetic field state of the permanent magnet under various operating conditions carry out real-time online detection.To be set for the anti-demagnetization of magneto
Meter and online anti-back magnetic control strategy design provide real data and support, and the validity of verifying design.
The present invention is axially grooved at permanent magnet by connecting in rotor core, will be with multiple axial distributions (preferably
Even distribution) temperature sensor and the FPC plate of magnetic field sensor be fixed in slot, contact it with permanent magnet surfaces.Make to have
The output end (end is provided with FPC connector) of the FPC plate of temperature sensor and magnetic field sensor is passed through forever by FPC soft arranging wire
Magneto hollow shaft is connected with temperature and magnetic field acquisition process component, and the temperature and magnetic field of detection are acquired and are handled,
Solve the processing and calibration of the test data under electromagnetic environment.Temperature and magnetic field acquisition process component pass through bus and master control system
Component is connected, master control system component by from temperature and the data of magnetic field acquisition process component on the one hand storage to being locally stored
On the other hand module is sent to host computer progress real-time display by wireless transport module and stores measurement data, to solve electricity
Data under magnetic environment are wirelessly transferred problem.Sensor unit, temperature and magnetic field acquisition process component, master control system component are by supplying
Electric module for power supply.Temperature and magnetic field acquisition process component, master control system component, Power Supply Assembly are placed in the containing body of metal material
It is interior, prevent the electromagnetic interference to temperature and magnetic field acquisition process component, master control system component, Power Supply Assembly, containing body and motor
Axis be connected, and with permanent magnet synchronous motor synchronous rotary.
Compared with prior art, multiple temperature sensors and magnetic field sensing that the present invention is axially distributed in permanent magnet surfaces
Device, than the distribution situation that the temperature of single-point and magnetic-field measurement can more understand permanent magnetism temperature and Surface field；It is welded using FPC plate
Thickness after jointing temp and magnetic field sensor only 2mm, make the sensor unit to the electromagnetic effect of permanent magnet machine rotor itself very
It is small；All the sensors signal output be by circuit connection, data are transmitted through wireless mode, under electromagnetic environment, temperature and
Magnetic field acquisition data are accurate, stablize, more scientific than crossing slip-ring device.Solve the installation and electromagnetic environment of sensor on rotor
Under data transmission problems, solve the problems, such as permanent magnet of permanent magnet motor temperature and Distribution of Magnetic Field measurement, realize magneto it is online
The multisensor of permanent magnet surfaces temperature and Distribution of Magnetic Field is continuously measured under each operating condition.
Detailed description of the invention
Fig. 1 is the structural principle block diagram of the device of the invention；
Fig. 2 is rotor core fluting schematic diagram of the invention；
Fig. 3 is the schematic diagram of sensor of the invention unit；
Fig. 4 is structural schematic diagram of the invention.
In figure, 1 is rotor core, and 2 be slot, and 3 be permanent magnet, and 4-1 be the first temperature sensor, and 4-2 pass for second temperature
Sensor, 4-3 be third temperature sensor, and 4-4 be the 4th temperature sensor, and 4-5 be the 5th temperature sensor, and 5-1 be the first magnetic
Field sensor, 5-2 be the second magnetic field sensor, and 5-3 be third magnetic field sensor, and 6 be FPC plate, and 7 be FPC connector, and 8 be FPC
Soft arranging wire, 9 be hollow shaft, and 10 be containing body, and 11 be temperature and magnetic field acquisition process component, and 12 be master control system component, and 13 are
Power Supply Assembly, 14 be host computer.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device, as shown in figs. 2 to 4, comprising:
Sensor unit is passed including FPC plate 6 and the multiple temperature sensors being set on the FPC plate 6 and multiple magnetic fields
Sensor by connecting at permanent magnet 3 in rotor core 1 along rotor core 1 axially grooved 2, and FPC plate 6 is fixed in slot 2,
Make multiple temperature sensors and multiple magnetic field sensors respectively along the axial distribution of rotor core 1 and is contacted with permanent magnet 3, this implementation
The permanent magnet 3 of permanent magnet synchronous motor uses V-shaped permanent magnet in example, and slot 2 is located at the outside of V-shaped permanent magnet,
Signal acquisition process unit receives and handles the electric signal of sensor unit, and will for being fixed on motor shaft
Data are wirelessly transmitted to host computer 14.
FPC plate 6 is in long strip, and one end is equipped with FPC connector 7, multiple temperature sensors and multiple magnetic field sensors difference
It is uniformly distributed along 6 length direction of FPC plate, and is connected with FPC connector 7.In the present embodiment, if there are five temperature sensors
(respectively the first temperature sensor 4-1, second temperature sensor 4-2, third temperature sensor 4-3, the 4th temperature sensor 4-
4 and the 5th temperature sensor 4-5)；Magnetic field sensor is respectively the first magnetic field sensor 5-1, the second magnetic field sensing there are three setting
Device 5-2 and third magnetic field sensor 5-3, temperature sensor select PT100 platinum resistance thermometer sensor, and magnetic field sensor selects HG106C Hall
Sensor.The mode of welding that temperature sensor and magnetic field sensor can select is fixed on the one side of FPC plate 6, FPC plate after welding
6 with a thickness of 2mm, make the sensor unit to the electromagnetic effect very little of permanent magnet machine rotor itself.
As shown in Figure 1, Figure 2 and Figure 4, the signal acquisition process unit in the present embodiment includes containing body 10 and is set to appearance
It receives the temperature in body 10 and magnetic field acquisition process component 11, master control system component 12 and Power Supply Assembly 13, containing body 10 is fixed on
On motor shaft, FPC connector 7 is connected by FPC soft arranging wire 8 with temperature and magnetic field acquisition process component 11.Temperature and magnetic field are adopted
Collection processing component is made of temperature acquisition processing module and magnetic field acquisition processing module；Temperature acquisition processing module is with discrete first device
Part is built, including constant current source power supply, amplifying circuit in the same direction, second order Butterworth filter circuit and overvoltage crowbar；Constant current
Source power supply circuit powers to temperature sensor, and when the temperature is changed, temperature sensor change in resistance causes faint variation voltage to be believed
Number being transferred to amplifying circuit in the same direction amplifies signal, afterwards by second order Butterworth filter circuit and overvoltage crowbar, most
Output signal is set to be connected to controller eventually；Temperature acquisition processing module is powered by external power supply.Magnetic field acquisition processing module is with discrete
Component is built, including the power supply of controllable constant-current source, differential amplifier circuit, reference voltage circuit, voltage follower, filtering and mistake
Voltage protection circuit.On the one hand controllable constant current source circuit is Hall sensor power supply, on the other hand provide calibration for Hall sensor.
Hall sensor output voltage is connected to differential amplifier circuit and reference voltage circuit, then after reaching voltage follower, through filtering
Circuit and overvoltage crowbar are connected to controller.Magnetic field acquisition processing module is powered by external power supply.
Master control system component master chip, wireless transport module and module is locally stored, master control system component will come from temperature
With the storage of the data of magnetic field acquisition process component to being locally stored in module, and host computer is sent to by wireless transport module,
To carry out real-time display and store detection data.Master chip uses the STM32F103RET6 of ST company production, wireless transport module
Using WIFI module, module is locally stored using SD card.Power Supply Assembly is battery power supply module, is made of lithium battery parallel connection, is
Sensor unit, temperature and magnetic field acquisition process component and master control system component provide power supply.Host computer utilizes LabVIEW's
TCP/IP module carries out host computer and writes, and realizes the receiving to WIFI signal, handles, displays and store.
The motor shaft of the present embodiment is hollow shaft 9, and containing body 10 is connected to the shaft end of hollow shaft 9, and 9 side wall of hollow shaft opens up
There is soft arranging wire entrance, FPC soft arranging wire 8 enters through hollow shaft 9 and temperature and magnetic field acquisition process group via soft arranging wire entrance
Part 11 is connected.Containing body 10 is cylindrical metal container, and the end of cylindrical metal container is connect with the shaft end of hollow shaft 9.And
With permanent magnet synchronous motor synchronous rotary.Use metal material container (the present embodiment is aluminum), can play prevent to temperature and
The electromagnetic interference of magnetic field acquisition process component and master control system component.
Above-mentioned permanent-magnetism synchronous motor permanent magnetic temperature can be used for permanent magnet 3 with magnetic field real time on-line detection device various
Temperature and magnetic field state under operating condition carry out real-time online detection.When measurement, is loaded, beaten according to the operating point of setting
Test equipment is opened, computer host computer is connected the device to, different operating points are measured, records the data of temperature and magnetic field.This
The design and building of invention kind permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device, can quickly, in real time
The temperature of permanent magnet and permanent magnet surfaces magnetic field under ground stably measured difference operating condition.Solve the installation of sensor and electricity on rotor
Data transmission problems under magnetic environment solve the problems, such as permanent magnet of permanent magnet motor temperature and Distribution of Magnetic Field measurement, realize Permanent Magnet and Electric
Machine continuously measures the multisensor of permanent magnet surfaces temperature and Distribution of Magnetic Field under each operating condition online.
The above-mentioned description to embodiment is for ease of ordinary skill in the art to understand and use the invention.It is ripe
The personnel for knowing art technology obviously easily can make various modifications to these embodiments, and general original described herein
It ought to use in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, this field
Technical staff's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in guarantors of the invention
Within the scope of shield.
Claims (7)
1. a kind of permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device characterized by comprising
Sensor unit is passed including FPC plate (6) and the multiple temperature sensors being set on the FPC plate (6) and multiple magnetic fields
Sensor, by axially grooved (2) along rotor core (1) at rotor core (1) connection permanent magnet (3), and FPC plate (6) are solid
It is interior due to slot (2), make multiple temperature sensors and multiple magnetic field sensors respectively along the distribution of rotor core (1) axial direction and and permanent magnetism
Body (3) contact,
Signal acquisition process unit receives and the electric signal of processing sensor unit for being fixed on motor shaft, and by data
It is wirelessly transmitted to host computer (14).
2. permanent-magnetism synchronous motor permanent magnetic temperature according to claim 1 and magnetic field real time on-line detection device, feature
It is, the FPC plate (6) is in long strip, and one end is equipped with FPC connector (7), multiple temperature sensors and multiple magnetic field sensings
Device is uniformly distributed along FPC plate (6) length direction respectively, and is connected with FPC connector (7).
3. permanent-magnetism synchronous motor permanent magnetic temperature according to claim 2 and magnetic field real time on-line detection device, feature
It is, the signal acquisition process unit includes containing body (10) and the temperature being set in containing body (10) and magnetic field acquisition
Processing component (11), master control system component (12) and Power Supply Assembly (13), the containing body (10) are fixed on motor shaft,
FPC connector (7) is connected by FPC soft arranging wire (8) with temperature and magnetic field acquisition process component (11).
4. permanent-magnetism synchronous motor permanent magnetic temperature according to claim 3 and magnetic field real time on-line detection device, feature
It is, the motor shaft is hollow shaft (9), and the containing body (10) is connected to the shaft end of hollow shaft (9), hollow shaft (9)
Side wall offers soft arranging wire entrance, and the FPC soft arranging wire (8) enters through hollow shaft (9) and temperature via soft arranging wire entrance
Degree is connected with magnetic field acquisition process component (11).
5. permanent-magnetism synchronous motor permanent magnetic temperature according to claim 4 and magnetic field real time on-line detection device, feature
It is, the containing body (10) is cylindrical metal container, and the end of cylindrical metal container and the shaft end of hollow shaft (9) connect
It connects.
6. permanent-magnetism synchronous motor permanent magnetic temperature according to claim 1 and magnetic field real time on-line detection device, feature
It is, the permanent magnet (3) of the permanent magnet synchronous motor uses V-shaped permanent magnet, and the slot (2) is located at V-shaped permanent magnet
Outside.
7. the application of permanent-magnetism synchronous motor permanent magnetic temperature and magnetic field real time on-line detection device as described in claim 1,
It is characterized in that, which is used for temperature and magnetic field state progress real-time online inspection to permanent magnet (3) under various operating conditions
It surveys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845629.4A CN109038963B (en) | 2018-07-27 | 2018-07-27 | Permanent magnet synchronous motor permanent magnet temperature and magnetic field real-time online detection device and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845629.4A CN109038963B (en) | 2018-07-27 | 2018-07-27 | Permanent magnet synchronous motor permanent magnet temperature and magnetic field real-time online detection device and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038963A true CN109038963A (en) | 2018-12-18 |
| CN109038963B CN109038963B (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845629.4A Active CN109038963B (en) | 2018-07-27 | 2018-07-27 | Permanent magnet synchronous motor permanent magnet temperature and magnetic field real-time online detection device and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954238A (en) * | 2019-10-08 | 2020-04-03 | 珠海格力电器股份有限公司 | High-speed motor rotor temperature measurement method and motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006094576A (en) * | 2004-09-21 | 2006-04-06 | Mitsubishi Motors Corp | Motor internal temperature measuring instrument |
| CN202710201U (en) * | 2012-08-19 | 2013-01-30 | 中国船舶重工集团公司第七一二研究所 | Device for detecting temperature of permanent magnet of permanent-magnetic motor online |
-
2018
- 2018-07-27 CN CN201810845629.4A patent/CN109038963B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006094576A (en) * | 2004-09-21 | 2006-04-06 | Mitsubishi Motors Corp | Motor internal temperature measuring instrument |
| CN202710201U (en) * | 2012-08-19 | 2013-01-30 | 中国船舶重工集团公司第七一二研究所 | Device for detecting temperature of permanent magnet of permanent-magnetic motor online |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954238A (en) * | 2019-10-08 | 2020-04-03 | 珠海格力电器股份有限公司 | High-speed motor rotor temperature measurement method and motor |
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| CN109038963B (en) | 2020-09-11 |
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