CN207780118U - A kind of iron loss testing device - Google Patents
A kind of iron loss testing device Download PDFInfo
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- CN207780118U CN207780118U CN201721267013.0U CN201721267013U CN207780118U CN 207780118 U CN207780118 U CN 207780118U CN 201721267013 U CN201721267013 U CN 201721267013U CN 207780118 U CN207780118 U CN 207780118U
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Abstract
The embodiment of the present application discloses a kind of iron loss testing device, for test form motor stator thin silicon steel plates whether insulation damages, by quickly adjusting the excitation voltage of iron loss tester, can quickly and easily test thin silicon steel plates whether insulation damages.Iron loss tester provided by the embodiments of the present application includes：Dragging motor, adjustable DC power supply, generator and iron loss tester, wherein the generator, including：Rotor and stator, the rotor are connect with the dragging motor, which connect with the iron loss tester, which connect with the rotor：The dragging motor drives the rotor of the generator to rotate when rotating；The adjustable DC power supply provides adjustable DC electric current for the rotor of the generator；Rotating excitation field is generated using the adjustable DC electric current when rotor rotates, the magnetic line of force which is used to cut the rotating excitation field obtains adjustable voltage；The adjustable voltage is carried out iron loss test by the iron loss tester.
Description
Technical field
This application involves machinery field, more particularly to a kind of iron loss testing device.
Background technology
The stator core of motor is formed by thin silicon steel plates closed assembly, when silicon steel sheet is manufactured or when closed assembly silicon steel sheet, silicon steel
Piece may be worn or damage, and cause assembled stator core insulation damages at the silicon steel sheet of the abrasion or damage, go out
Existing short circuit, to the phenomenon that hot-spot occur.Silicon steel pad wear or damage to prevent stator core cause stator core office
The situation of portion's overheat needs the loss test for carrying out stator core, i.e. iron loss to test.
Iron loss tester in existing scheme includes excitation module, measurement module, excitation module include Exciting Windings for Transverse Differential Protection and
Voltage tester table, measurement module include Exciting Windings for Transverse Differential Protection and testing current table, first, wound on stator core Exciting Windings for Transverse Differential Protection and
Winding is measured, alternating voltage is passed through in the Exciting Windings for Transverse Differential Protection, the Exciting Windings for Transverse Differential Protection is made to generate alternating flux in the inside of stator core, it is fixed
Sub- iron core generates vortex in the alternating flux and magnetic hystersis loss, stator core generate heat, and temperature increases, meanwhile, stator
The silicon steel sheet part of core interior insulation damages will generate larger local eddy currents, and temperature steeply rises, and can use infrared ray
Thermal imaging system is scanned the part for searching stator core overheat, and measurement winding is also wound on stator core, and it is fixed to measure
Magnetic induction intensity of the sub- iron core in different moments, iron core voltage is obtained by calculation, according to measuring exciting current and iron core
Voltage can calculate the active loss of stator core, and result of calculation and measurement result are compared with design requirement, to judge
The quality of stator core.
And the power supply mode of the excitation voltage for Exciting Windings for Transverse Differential Protection, using transformer-supplied, high-power transformer
Output voltage is non-adjustable, and number of coils that can only be by changing magnet exciting coil cannot be continuously adjusted with adjusting excitation voltage, be adjusted
Precision it is too big, implement complicated.
Invention content
The embodiment of the present application provides a kind of iron loss testing device, for test form motor stator thin silicon steel plates whether
Insulation damages can quickly and easily test whether thin silicon steel plates insulate by quickly adjusting the excitation voltage of iron loss tester
Damage.
In view of this, the embodiment of the present application first aspect provides a kind of iron loss testing device, including：It is dragging motor, adjustable
DC power supply, generator and iron loss tester, wherein the generator, including：Rotor and stator, the rotor and the dragging
Motor connects, which connect with the iron loss tester, which connect with the rotor：
The dragging motor drives the rotor of the generator to rotate when rotating；
The adjustable DC power supply provides adjustable DC electric current for the rotor of the generator；
Rotating excitation field is generated using the adjustable DC electric current when rotor rotates, the stator is for cutting the rotating excitation field
The magnetic line of force obtains adjustable voltage；
The adjustable voltage is carried out iron loss test by the iron loss tester.
Optionally, the generator further includes：Output module, the output module are tested with the stator and the iron loss respectively
Instrument connects, wherein：
The output module exports the adjustable voltage to the iron loss tester.
Optionally, the iron loss tester, including：
Excitation module and measurement module, the excitation module are connect with the output module and measured iron core respectively, should
Measurement module is measured iron core with this and connect；
The excitation module generates test magnetic field by the adjustable voltage on the measurement iron core；
The measurement module measures the test magnetic field.
Optionally, which includes：
Magnet exciting coil and rotation axis, the magnet exciting coil and the rotation axis connection, wherein：
The magnet exciting coil receives the adjustable DC electric current；
The rotation axis is rotated by the dragging motor, and when rotation drives the magnet exciting coil to rotate, and generates the rotary magnetic
.
Optionally, which includes：
Stator core and stator winding, the stator core are connect with the stator winding；
The stator core, for fixing the stator winding；
The stator winding, the magnetic line of force for cutting the rotating excitation field obtain the adjustable voltage.
Optionally,
The stator core is additionally operable to eliminate the harmonic wave of the adjustable voltage by adjusting pitch.
Optionally, the adjustable range of the adjustable voltage, including 0V to 1.3 times of rated voltage.
Optionally, the velocity of rotation of the dragging motor is preset speed value.
Optionally, which further includes：
Voltmeter, the voltmeter are connect with the output module；
The voltmeter, the value for measuring the adjustable voltage.
Optionally, the regulative mode of the adjustable DC power supply includes：Pass through touch screen input current value or classification selection electricity
Stream.
As can be seen from the above technical solutions, the embodiment of the present application has the following advantages：
Iron loss testing device provided by the embodiments of the present application includes dragging motor, adjustable DC power supply, generator and iron
Tester is damaged, dragging motor drives the rotor rotation of generator, adjustable DC power supply to be provided for the rotor of generator
The rotor of adjustable DC power supply, generator forms rotating excitation field in rotation, and the stator of generator cuts the rotation
Magnetic field obtains adjustable voltage, and iron loss tester, to carry out iron loss test, can pass through adjusting using the adjustable voltage as field power supply
The output current of DC power supply to adjust the field power supply of iron loss tester, without by change Exciting Windings for Transverse Differential Protection number of coils with
Excitation voltage is adjusted, it can be quickly by excitation voltage regulation to suitable voltage.
Description of the drawings
Fig. 1 is the iron loss tester of existing scheme；
Fig. 2 is one embodiment schematic diagram of iron loss testing device in the embodiment of the present application；
Fig. 3 is another embodiment schematic diagram of iron loss testing device in the embodiment of the present application；
Fig. 4 is another embodiment schematic diagram of iron loss testing device in the embodiment of the present application；
Fig. 5 is one embodiment schematic diagram of generator in the embodiment of the present application.
Specific implementation mode
The embodiment of the present application provides a kind of iron loss testing device, for test form motor stator thin silicon steel plates whether
Insulation damages can quickly and easily test whether thin silicon steel plates insulate by quickly adjusting the excitation voltage of iron loss tester
Damage.
Motor is widely used in machinery field, and in industrial and agricultural production, national defence has extensive in scientific and technological and daily life
Purposes, important component of the stator as motor, including：Stator core and stator winding etc., stator core is sent out in motor
Important role is waved, stator core is the important component for constituting motor magnetic flux circuit and fixed stator coils, fixed in order to reduce
Vortex and magnetic hystersis loss, stator core caused by alternating magnetic field can be formed by thin silicon steel plates closed assembly in sub- iron core.In silicon
During the manufacturing process or closed assembly of steel disc, the insulation damages between leading to silicon steel sheet due to wearing or fracture etc. will cause
It is short-circuit between the piece of silicon steel sheet.In order to prevent between the silicon steel sheet of stator core caused by insulation damages stator core internal short-circuit, need
Iron loss test, the eddy-current loss and magnetic hystersis loss that iron loss, that is, core interior generates are carried out to stator core.
Iron loss tester is common iron loss testing tool, referring to Fig. 1, the iron loss tester in existing scheme.It is surveying
When measuring iron loss, is wound on stator core and measure winding and Exciting Windings for Transverse Differential Protection, be passed through excitation voltage in Exciting Windings for Transverse Differential Protection, adjust the excitation
Voltage so that be passed through the alternating flux that the Exciting Windings for Transverse Differential Protection after excitation voltage generates saturation state in stator core, stator core
Induced electromotive force is generated in alternating flux and then generates induced current, induced current generates eddy-current loss on stator core,
Stator core will generate heat, therefore the temperature of stator core increases.Meanwhile stator core built-in electrical insulation damage part will generate compared with
Maelstrom, temperature steeply rise, so as to find out heat spot by temperature measurement tool.Instrument can be surveyed with infrared ray temperature measure stator
The Wen Sheng and the temperature difference of core interior, by the total quality that stator core is calculated.It can also be scanned with infrared thermography
Search the local hot spot of stator core.When the measurement winding being wrapped on stator core can measure different inside stator core
The magnetic induction intensity at quarter, while exciting current is measured using ammeter, excitation voltage is measured with voltmeter, to carry out calculating
To the loss of stator core.Result will be calculated to be compared with result ideally, judge that stator core is with this
No damage.It is and the excitation in existing scheme an important factor for generating alternating flux to be passed through the field power supply inside stator core
Power supply uses transformer-supplied, can not directly adjust, can only pass through when the transformer is in the case of larger using power
The number of coils for adjusting Exciting Windings for Transverse Differential Protection, to adjust alternating flux, specific implementation mode is complicated.
The iron loss testing device in the embodiment of the present application is illustrated below, referring to Fig. 2, iron in the embodiment of the present application
One embodiment schematic diagram of test device is damaged, including：
Dragging motor 201, adjustable DC power supply 202, generator 203 and iron loss tester 204, wherein generator 203
Including：Rotor 2031 and stator 2032.
Dragging motor 201 is connect with the rotor 2031 in generator 203, in adjustable DC power supply 202 and generator 203
Rotor 2031 connects, and iron loss tester 204 is connect with the stator 2032 inside generator 203.
Dragging motor 201, is rotated, and drives the rotor 2031 inside engine 203 to be rotated when rotation.
Adjustable DC power supply 202 can be that rotor 2031 provides adjustable DC electric current, to be generated when rotor 2031 rotates
Rotating excitation field adjusts the adjustable DC electric current, can adjust the magnetic field intensity of the rotating excitation field.
Rotor 2031, when dragging motor 201 rotates, dragged motor 201 drives rotation, and adjustable DC is utilized when rotation
The adjustable DC electric current that power supply provides generates rotating excitation field, the adjustable DC that can be exported by adjusting adjustable DC power supply 202
Electric current adjusts the magnetic field intensity of the rotating excitation field.
When rotor 2031 rotates and generates rotating excitation field, stator 2032 can cut the magnetic line of force of the rotating excitation field, pass through
Electromagnetic induction generates adjustable voltage, the adjustable DC electric current which can export by adjusting adjustable DC power supply 202
And the rotating excitation field for changing the generation of rotor 2031 adjusts voltage.
After stator 2032 generates adjustable voltage, iron loss tester 204 is using the adjustable voltage as excitation voltage, tested
Stator core in generate alternating flux, to carry out iron loss test.
In the embodiment of the present application, iron loss testing device provides adjustable voltage for iron loss tester, the adjustable voltage by
Dragging motor, generator and adjustable DC power supply generate, and dragging motor drives the rotor rotation of generator, and being passed through in the rotor can
The adjustable DC electric current that tuning DC power supply generates, rotating excitation field is generated when rotor rotates, the stator in generator is to the rotation
Magnetic field magnetic line is cut to obtain adjustable voltage, and generator obtains adjustable voltage by separate excitation excitation, by adjusting straight-adjustable
The adjustable DC electric current that galvanic electricity source generates can obtain adjustable adjustable voltage, which can be used as iron loss to test
Instrument provides field power supply when test, no longer needs to the number of coils by changing the Exciting Windings for Transverse Differential Protection inside iron loss tester to adjust
Alternating flux, regulative mode are simple.
The aforementioned iron loss testing device to the embodiment of the present application is illustrated, and is surveyed below to iron loss in the embodiment of the present application
Trial assembly, which is set, to be further described, referring to Fig. 3, another embodiment of iron loss testing device is illustrated in the embodiment of the present application
Figure, including：
Dragging motor 201, adjustable DC power supply 202, generator 203, iron loss tester 204 and voltmeter 205,
In, generator 203 includes：Rotor 2031, stator 2032 and output module 2033.Rotor 2031 includes：Rotation axis 20311 with
And magnet exciting coil 20312.Stator 20321 includes：Stator winding 20321 and stator core 20322, iron loss tester include：
Excitation module and measurement module.
Dragging motor 201 is connect with rotation axis 20311, and adjustable DC power supply 202 is connect with magnet exciting coil 20312, excitation
Coil 20312 is connect with rotation axis 20311 and stator core respectively, and stator core 20322 is connect with stator winding 20321,
Stator winding is connect with output module 2033, and output module is connect with excitation module 2041 and voltmeter 205 respectively, exports mould
Block is connect with the excitation module inside iron loss tester 204, and excitation module 2041 is connect with measurement module 2042.
Rotation axis 20311 is rotated under the drive of dragging motor, receives the mechanical energy of dragging motor transmission, Ying Li
Solution, the velocity of rotation of the dragging motor can be normal speed, for example, 5000 revolution per seconds.
Magnet exciting coil 20312 rotates under the drive of rotation axis 20311, receives the adjustable of 202 output of adjustable DC power supply
DC current rotates according to the adjustable DC electric current and magnet exciting coil 20312, can generate rotating excitation field.
It should be noted that rotor 2031 can also include rotor core, slip ring or fan, this is not limited here.
Stator core 20322 is used for fixed stator winding 20321, and the pitch of the stator core 20322 is adjustable, for example,
By the regulation by pitch of stator core be 2/3rds pitches, can eliminate 3 times and 3 multiple subharmonic, reduce generator
The aberration rate of output voltage.
Stator winding 20321 is used for induced electromotive force, and the rotating excitation field that magnet exciting coil 20312 generates often rotates a circle, should
The magnetic line of force that stator winding cuts the rotating excitation field is primary, to generate induced potential, and then can export adjustable voltage, pass through
Output module 2033 accesses excitation module 2041.The range of the adjustable voltage can be 0 to 1.3 times of rated voltage.
It should be noted that stator 2032 can also include the structural member of 2032 internal firmware of engine base and fixed stator,
This is not limited here.
Output module 2033, the adjustable voltage for being generated to iron loss tester output stator 2032.
Excitation module 2041 includes the Exciting Windings for Transverse Differential Protection of iron loss tester, which is wound in tested stator core,
For after being passed through adjustable voltage, generating alternating flux, which is used to test the iron loss of tested stator core.
Measurement module 2042, the magnetic field intensity of the alternating flux for measuring the generation of excitation module 2041, and measure voltage
And electric current, the magnetic field intensity, voltage and electric current can calculate the loss of stator core.
In the embodiment of the present application, iron loss testing device includes dragging motor, and adjustable DC power supply, generator, iron loss are surveyed
Try instrument and voltmeter, wherein generator includes：Rotor, stator and output module.Rotor includes：Rotation axis and excitation
Coil.Stator includes：Stator winding and stator core, iron loss tester include：Excitation module and measurement module.Dragging electricity
Machine drives the rotation axis rotation of rotor, while rotation axis drives the magnet exciting coil rotation of internal rotor, is passed through on the magnet exciting coil
The adjustable DC electric current that adjustable DC power supply provides generates rotating excitation field when the rotor rotate, and stator interior is fixed on calmly
Stator winding on sub- iron core can cut the rotating excitation field, generate and move potential, obtain adjustable voltage, can be adjustable by adjusting
The adjustable DC electric current of DC power supply changes the rotating excitation field that rotor generates, to adjust the adjustable voltage of stator generation.Power generation
The output voltage is exported the excitation module to iron loss tester by the output module inside machine, as encouraging for the excitation module
It magnetoelectricity source can be electric by adjusting the output of adjustable DC power supply to generate alternating flux inside tested stator core
Stream, to adjust the field power supply of iron loss tester, regulative mode is simple.Measurement module is strong by the magnetic field for measuring the alternating flux
Degree, electric current and voltage, calculate the iron loss of tested stator core.
By adjusting the output current of adjustable DC power supply, adjustable voltage can be exported with regulator generator, and survey to iron loss
Examination instrument exports the adjustable voltage, and iron loss test is using can be by the adjustable voltage as the excitation voltage of excitation module, regulative mode
It is simple and convenient, no longer need to the quantity for adjusting magnet exciting coil in the excitation module.
In the specific implementation scenario, referring to Fig. 4, in the embodiment of the present application iron loss testing device another implement illustrate
It is intended to, including dragging motor 401, generator 402 and output interface 403, the rotation axis of dragging motor are connect with generator, are
Generator provides mechanical energy, and generator provides field power supply by output interface to iron loss tester.Generator is specifically implemented
It illustrates and is intended to referring to Fig. 5, wherein, 501 be the stator core of generator, and 502 be the excitation wire of generator rotor
Circle, 503 be the rotation axis of generator rotor, and 504 be voltmeter, and 505 be adjustable DC power supply, and 506 be stator winding.It needs
It is noted that the generator can also include：The compositions such as brush, rectifier, pedestal, retaining ring, center ring, slip ring or fan portion
Part, this is not limited here.
Rotation axis 503 is connect with dragging motor, is rotated with normal speed under the drive of dragging motor, while driving excitation
Coil 503 rotates, and adjustable DC power supply 505 is that magnet exciting coil 503 provides adjustable DC electric current.The control of adjustable DC power supply 505
Mode processed can be knob control, can also be touch-screen input, and this is not limited here.Magnet exciting coil 503 is produced in rotation
Raw rotating excitation field, the magnetic field intensity of the rotating excitation field are associated with the adjustable DC electric current that adjustable DC power supply 505 provides, and pass through tune
The adjustable DC electric current for saving the adjustable DC power supply 505 output, can adjust the magnetic field intensity of the rotating excitation field, stator winding
506 cut the rotating excitation field, can generate adjustable voltage.The adjustable voltage can be as the field power supply of iron loss tester, profit
Alternating flux, which is generated, with the field power supply carries out iron loss test.Therefore, the output current for controlling adjustable DC power supply, can be adjusted
The output voltage of generator can test the adjustable voltage of generator output, to be adjusted with voltmeter.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes iron loss test described in each embodiment of the application
All or part of the step of executing of each component part in device.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, only
Read memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc
Or the various media that can store program code such as CD.
The above, above example are only to illustrate the technical solution of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of iron loss testing device, which is characterized in that including：Dragging motor, adjustable DC power supply, generator and iron loss are surveyed
Try instrument, wherein the generator, including：Rotor and stator, the rotor are connect with the dragging motor, the stator with
The iron loss tester connection, the adjustable DC power supply are connect with the rotor：
The rotor of the generator is driven to rotate when the dragging motor rotation；
The adjustable DC power supply provides adjustable DC electric current for the rotor of the generator；
Rotating excitation field is generated using the adjustable DC electric current when rotor rotation, the stator is for cutting the rotary magnetic
The magnetic line of force of field obtains adjustable voltage；
The adjustable voltage is carried out iron loss test by the iron loss tester.
2. iron loss testing device according to claim 1, which is characterized in that the generator further includes：Output module,
The output module is connect with the stator and the iron loss tester respectively, wherein：
The output module exports the adjustable voltage to the iron loss tester.
3. iron loss testing device according to claim 2, which is characterized in that the iron loss tester, including：
Excitation module and measurement module, the excitation module are connect with the output module and measured iron core respectively, institute
Measurement module is stated to connect with the measured iron core；
The excitation module generates test magnetic field by the adjustable voltage on the measurement iron core；
The measurement module measures the test magnetic field.
4. iron loss testing device according to claim 3, which is characterized in that the rotor includes：
Magnet exciting coil and rotation axis, the magnet exciting coil and the rotation axis connection, wherein：
The magnet exciting coil receives the adjustable DC electric current；
The rotation axis is rotated by the dragging motor, and when rotation drives the magnet exciting coil to rotate, and generates the rotation
Turn magnetic field.
5. iron loss testing device according to claim 4, which is characterized in that the stator includes：
Stator core and stator winding, the stator core are connect with the stator winding；
The stator core, for fixing the stator winding；
The stator winding, the magnetic line of force for cutting the rotating excitation field obtain the adjustable voltage.
6. iron loss testing device according to claim 5, which is characterized in that
The stator core is additionally operable to eliminate the harmonic wave of the adjustable voltage by adjusting pitch.
7. iron loss testing device according to claim 6, which is characterized in that the adjustable range of the adjustable voltage, including
0V to 1.3 times of rated voltage.
8. iron loss testing device according to claim 1 or 2, which is characterized in that the velocity of rotation of the dragging motor is
Preset speed value.
9. iron loss testing device according to claim 2, which is characterized in that the iron loss testing device further includes：
Voltmeter, the voltmeter are connect with the output module；
The voltmeter, the value for measuring the adjustable voltage.
10. iron loss testing device according to claim 1 or 2, which is characterized in that the adjusting side of the adjustable DC power supply
Formula includes：Pass through touch screen input current value or classification selection electric current.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267013.0U CN207780118U (en) | 2017-09-28 | 2017-09-28 | A kind of iron loss testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267013.0U CN207780118U (en) | 2017-09-28 | 2017-09-28 | A kind of iron loss testing device |
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| CN207780118U true CN207780118U (en) | 2018-08-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412466A (en) * | 2019-09-02 | 2019-11-05 | 无锡康沃特变频电机有限公司 | Measure the structures and methods of high revolving speed permanent magnet motor operating parameters |
| CN112505543A (en) * | 2020-11-12 | 2021-03-16 | 华能国际电力股份有限公司井冈山电厂 | Large-scale generator iron loss detection system and method |
| CN117471183A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
| WO2024027003A1 (en) * | 2022-08-01 | 2024-02-08 | 中广核核电运营有限公司 | Generator iron core fault detection method and system |
-
2017
- 2017-09-28 CN CN201721267013.0U patent/CN207780118U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412466A (en) * | 2019-09-02 | 2019-11-05 | 无锡康沃特变频电机有限公司 | Measure the structures and methods of high revolving speed permanent magnet motor operating parameters |
| CN112505543A (en) * | 2020-11-12 | 2021-03-16 | 华能国际电力股份有限公司井冈山电厂 | Large-scale generator iron loss detection system and method |
| WO2024027003A1 (en) * | 2022-08-01 | 2024-02-08 | 中广核核电运营有限公司 | Generator iron core fault detection method and system |
| CN117471183A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
| CN117471183B (en) * | 2023-12-27 | 2024-03-12 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
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