CN117471183A - Stator core loss measuring device - Google Patents
Stator core loss measuring device Download PDFInfo
- Publication number
- CN117471183A CN117471183A CN202311810247.5A CN202311810247A CN117471183A CN 117471183 A CN117471183 A CN 117471183A CN 202311810247 A CN202311810247 A CN 202311810247A CN 117471183 A CN117471183 A CN 117471183A
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- core loss
- measuring
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- 238000004804 winding Methods 0.000 claims abstract description 83
- 238000005259 measurement Methods 0.000 claims abstract description 44
- 230000005284 excitation Effects 0.000 claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The invention discloses a stator core loss measuring device, which relates to the technical field of core loss measurement and is used for measuring the core loss of a stator and comprises the following components: a base plate on which a rotor is provided; the excitation winding and the measuring winding are wound in advance and are arranged next to each other, and the excitation winding and the measuring winding are sleeved on the rotor in a corresponding radial sliding manner; and a movement control assembly corresponding to the excitation winding and the measurement winding, comprising: the mobile component is provided with a mobile end; the socket is arranged at the moving end and is used for electrically connecting the exciting winding and the measuring winding respectively; an integrator having a power supply and a measurer, which is fixed to the moving assembly and electrically connected to the socket through a flexible collecting wire harness, wherein the power supply is electrically connected to the exciting winding, and the measurer is electrically connected to the measuring winding; the rotor can cooperate the stator to realize the iron loss measurement to the stator, improves measurement accuracy to this device's adaptability is high.
Description
Technical Field
The invention relates to the technical field of iron loss measurement, in particular to a stator iron loss measurement device.
Background
Inside the motor, the wear of the stator assembly may cause a series of serious problems, such as short-circuit risks and local overheating phenomena of the stator core; to avoid these potential hazards, it is important to perform loss testing on the stator core; in addition, stator core loss plays a significant role in various factors affecting motor performance, and thus, accurate measurement of stator core loss has profound significance in the design and manufacturing process of the motor.
In the conventional stator core loss measurement method, a series of steps are required to be completed when stator core loss measurement is performed; firstly, an excitation winding and a measurement winding are wound on salient poles of a stator, and the windings are used for generating a magnetic field and measuring an electric signal; then, the rotor is placed in the stator, ensuring that there is a proper air gap between the two; salient poles of the rotor correspond to salient poles of the stator to ensure matching; finally, the measurement operation is performed to obtain the required data, however, the stator to be measured needs to be wound and matched again each time, which is complicated.
Therefore, it is necessary to provide a stator core loss measuring apparatus to solve the above-mentioned problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a stator core loss measurement apparatus for performing core loss measurement on a stator, comprising:
the base plate is provided with a rotor, the rotor material is low-loss amorphous alloy lamination, and the unit loss generated by the rotor in the test is less than 1/10 of that of the stator, so that the loss generated by the rotor can be ignored;
the excitation winding and the measuring winding are wound in advance and are arranged next to each other, the excitation winding and the measuring winding are sleeved on the rotor in a corresponding radial sliding manner, the rotor is provided with rotor salient poles, the winding directions wound on adjacent rotor salient poles are opposite, namely, the windings on the adjacent rotor salient poles are wound alternately in the clockwise direction and the clockwise direction, and then a closed magnetic circuit is formed; and a movement control assembly corresponding to the excitation winding and the measurement winding, the movement control assembly comprising:
the mobile component is provided with a mobile end;
the socket is arranged at the moving end and is used for electrically connecting the exciting winding and the measuring winding respectively;
the integrator is provided with a power supply and a measurer, is fixed on the movable assembly and is electrically connected with the socket through a flexible wiring harness, wherein the power supply is electrically connected with the excitation winding, and the measurer is electrically connected with the measurement winding.
Further, preferably, the stator has stator salient poles, and the rotor has rotor salient poles, the number of the stator salient poles being identical to the number of the rotor salient poles; when the stator is measured, the exciting winding and the measuring winding on the rotor are firstly transferred to the stator convex poles through the moving end, and then the stator is measured.
Further, preferably, the rotor further includes a shaft body rotatably provided on the base plate, the rotor salient poles are arranged to be circumferentially spaced apart and have an even number;
each rotor convex pole is wound in advance and is provided with an excitation winding and a measurement winding in the close vicinity.
Further, preferably, a plurality of circumferentially spaced clamping grooves are formed in the outer peripheral side of the shaft body, and the clamping grooves are used for wrapping part of the rotor salient poles and forming clamping arrangement for the rotor salient poles.
Further, preferably, a dovetail groove is integrally formed on one side of the clamping groove, and a dovetail bar corresponding to the dovetail groove is fixed on the rotor flange.
Further, preferably, the moving assembly includes:
the surface of the mounting seat is provided with a abdication groove;
the lead screw is rotationally arranged on the mounting seat;
the movable seat is connected to the lead screw in a transmission way and penetrates through the abdication groove; and the output end of the motor is fixed with a second rotating wheel, the second rotating wheel is in transmission connection with the first rotating wheel by adopting a belt, and the first rotating wheel is coaxially fixed on the screw rod.
Further, preferably, an arc guide rail is further fixed on the moving seat, and a sliding seat is slidably arranged on the arc guide rail, and the sliding seat is used as a moving end of the moving assembly to be connected with the socket.
Further, preferably, the two ends of the arc-shaped guide rail are further fixed with a baffle plate, a second electromagnetic block is arranged on the baffle plate, the two ends of the sliding seat are provided with first electromagnetic blocks corresponding to the second electromagnetic blocks, and the first electromagnetic blocks and the second electromagnetic blocks can repel each other.
Further, preferably, the exciting winding and the measuring winding are hardened in advance.
Compared with the prior art, the invention provides a stator iron loss measuring device, which has the following beneficial effects:
the rotor can cooperate the stator to realize the iron loss measurement to the stator in this device, wherein, on the one hand, the rotor can bear the effect of temporarily bearing exciting winding and measuring winding, and exciting winding and measuring winding of being convenient for shift to the stator fast on the other hand, the rotor can also carry out automatic fine setting so that the rotor salient pole corresponds to the stator salient pole accurately, improves measurement accuracy to this device's adaptability is high.
Drawings
FIG. 1 is a schematic diagram of a front view of a stator core loss measurement device;
FIG. 2 is a schematic top view of a stator core loss measurement device;
FIG. 3 is a schematic perspective view of a stator core loss measuring device;
FIG. 4 is an exploded view of a stator core loss measurement device;
FIG. 5 is a schematic perspective view of a rotor and stator in a stator core loss measurement device;
FIG. 6 is a schematic perspective view of a motion control assembly of a stator core loss measurement device;
FIG. 7 is a schematic diagram showing a second perspective structure of a motion control assembly in a stator core loss measurement device;
FIG. 8 is a schematic diagram of a three-dimensional structure of a motion control assembly in a stator core loss measurement device;
in the figure: 1. a bottom plate; 2. a rotor; 3. a stator; 4. exciting winding; 5. measuring windings; 6. a movement control assembly; 21. a shaft body; 22. rotor salient poles; 23. a dovetail groove; 24. a clamping groove; 31. stator salient poles; 61. a mounting base; 62. a relief groove; 63. a movable seat; 64. a screw rod; 65. a first wheel; 66. a second wheel; 67. a motor; 68. an arc-shaped guide rail; 69. a slide; 610. a first electromagnetic block; 611. an integrator; 612. a second electromagnetic block; 613. a socket.
Detailed Description
Referring to fig. 1 to 8, in an embodiment of the present invention, a stator core loss measurement device is provided, for measuring core loss of a stator 3, including:
the base plate 1 is provided with a rotor 2, the rotor material is low-loss amorphous alloy lamination, and the unit loss generated by the rotor in the test is less than 1/10 of that of the stator, so that the loss generated by the rotor can be ignored;
the exciting winding 4 and the measuring winding 5 which are wound in advance and are arranged next to each other are sleeved on the rotor 2 in a corresponding radial sliding way, the rotor 2 is provided with rotor salient poles 22, wherein the winding directions wound on the adjacent rotor salient poles 22 are opposite, namely, the windings on the adjacent rotor salient poles 22 are wound alternately in a clockwise direction and a clockwise direction, and a closed magnetic circuit is formed; and a movement control assembly 6 corresponding to the excitation winding 4 and the measurement winding 5.
The movement control assembly 6 comprises:
the mobile component is provided with a mobile end;
a socket 613 disposed at the moving end for electrically connecting the exciting winding 4 and the measuring winding 5, respectively;
an integrator 611 having a power supply and a measurer, which are fixed to the moving assembly and electrically connected to the socket 613 through a flexible collecting harness, wherein the power supply is electrically connected to the exciting winding 4, and the measurer is electrically connected to the measuring winding 5.
The device can be used for measuring the iron loss of the stator 3 of a switched reluctance motor, for example, so that an external device (such as a manipulator) is needed to provide the stator 3 to be measured, and after the stator 3 is measured, the stator 3 is removed by the external device, and in the process, the position of the rotor 2 can be kept unchanged;
based on the above, in the present embodiment, the exciting winding 4 and the measuring winding 5 which are wound in advance and are arranged next to each other are provided on the rotor 2, the exciting winding 4 and the measuring winding 5 which are wound in advance and are arranged next to each other can be subjected to hardening treatment, for example, surface-coating hardening slurry, and the stability of the outer shapes of the exciting winding 4 and the measuring winding 5 can be further increased by subjecting both to hardening treatment;
while the stator 3 has stator salient poles 31, the rotor 2 has rotor salient poles 22, and the number of the stator salient poles 31 is consistent with the number of the rotor salient poles 22, when the stator 3 is measured, the exciting winding 4 and the measuring winding 5 on the rotor 2 are transferred to the stator salient poles 31 through the moving end, and then the measurement is performed.
After the measurement is finished, the exciting winding 4 and the measuring winding 5 which are positioned on the stator salient poles 31 are driven to an initial state by the moving end, namely, positioned on the rotor 2;
that is, in the present device, the rotor can also take on the role of temporarily carrying the excitation winding 4 and the measurement winding 5;
this enables a rapid measurement of the stator 3;
in this embodiment, the rotor 2 includes:
a shaft body 21 rotatably provided on the base plate 1; and rotor salient poles 22 configured to be circumferentially spaced apart and have an even number;
each rotor salient pole 22 is wound in advance and is provided with an excitation winding 4 and a measurement winding 5 in close proximity thereto.
It should be explained that, taking a switched reluctance motor as an example, salient poles of a stator and a rotor of the switched reluctance motor can be formed by laminating common silicon steel sheets. The rotor has no winding and permanent magnet, the stator pole is wound with concentrated winding, the two windings which are opposite in radial direction are connected together, which is called as 'one phase', the switch reluctance motor can be designed into a plurality of different phase number structures, and the pole numbers of the stator and the rotor are matched in a plurality of different ways. The number of phases is more, the step angle is small, the torque pulsation is reduced, but the structure is complex, the main switching device is more, the cost is high, the three-phase (6/4) structure, the four-phase (8/6) structure and the six-phase (12/8) structure are more applied nowadays,
in the present embodiment, a three-phase (6/4) structure is taken as an example, wherein 6 represents 6 stator salient poles and 4 represents 4 rotor salient poles;
however, it should also be understood that the present device is for measuring core loss of a stator, and the three-phase (6/4), four-phase (8/6) and six-phase (12/8) structures are provided for better driving of rotor rotation;
therefore, when the measurement is performed, the number of rotor salient poles is 6;
that is, it is required that the rotor salient pole 22 corresponds to the stator salient pole 31, and in addition, in actual operation, when the stator 3 to be measured is provided by an external device (such as a robot arm), it is often difficult to achieve accurate positioning (no positioning reference) for the stator 3, so that it is difficult for the rotor salient pole 22 to correspond accurately to the stator salient pole 31, and thus it is often only possible to achieve rough positioning for the stator 3 by means of a structure such as a visual sensor, and in order to solve the above-described problems, the rotor 2 is configured to be adaptively adjustable in the present apparatus;
that is, the shaft body 21 is rotatably provided on the base plate 1;
that is, in the present device, the rotor salient pole 22 is capable of performing fine adjustment of angle, when the stator 3 is measured, the exciting winding 4 is energized first, so that the rotor salient pole 22 generates magnetism, and moves slightly toward the direction corresponding to the stator salient pole 31 until the rotor salient pole 22 completely corresponds to the positioning salient pole 31, and then the exciting winding 4 and the measuring winding 5 on the rotor 2 are transferred to the stator salient pole 31 through the moving end, and then the measurement is performed;
in addition, in order to better measure each stator salient pole 31, the number of rotor salient poles 22 is configured to be the same as the number of stator salient poles 31;
furthermore, in order to accommodate stators with different outer diameters, in this embodiment, the rotor salient poles 22 are replaceable, the outer circumferential side of the shaft body 21 is provided with a plurality of circumferentially spaced clamping grooves 24, and the clamping grooves 24 are used for wrapping part of the rotor salient poles 22 and forming clamping connection with the rotor salient poles.
One side of the clamping groove 24 is integrally provided with a dovetail groove 23, and the rotor salient pole 22 is fixedly provided with a dovetail bar corresponding to the dovetail groove 23.
Through the arrangement, the rotor salient pole 22 is detachably arranged on the shaft body 21 and is stable.
That is, by changing the rotor salient poles 22 differently, it is possible to adapt to stators of different outer diameters so that a proper air gap is maintained between the rotor salient poles 22 and the stator salient poles 31;
in this embodiment, the moving component includes:
the mounting seat 61 is provided with a relief groove 62 on the surface;
a screw 64 rotatably provided to the mount 61;
a movable seat 63, which is connected to the screw rod 64 in a driving manner and passes through the relief groove 62; and a motor 67, the output end of which is fixed with a second rotating wheel 66, the second rotating wheel 66 is in transmission connection with the first rotating wheel 65 by adopting a belt, and the first rotating wheel 65 is coaxially fixed on the screw rod 64.
In addition, an arc-shaped guide rail 68 is fixed on the moving seat 63, a sliding seat 69 is slidably arranged on the arc-shaped guide rail 68, and the sliding seat 69 is used as a moving end of the moving assembly and is connected with the socket 613.
That is, after the rotor salient pole 22 performs rotational micro-movement, the socket 613 moves synchronously to adapt to the micro-movement of the rotor salient pole 22, and then the movement of the moving seat 63 can also drive the socket 613, the exciting winding 4 and the measuring winding 5 to move, so as to realize the transfer;
in order to reset the rotor salient pole 22, two ends of the arc-shaped guide rail 68 are further fixed with a baffle plate, a second electromagnetic block 612 is arranged on the baffle plate, two ends of the sliding seat 69 are provided with a first electromagnetic block 610 corresponding to the second electromagnetic block 612, and the first electromagnetic block 610 and the second electromagnetic block 612 can repel each other.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. A stator core loss measuring apparatus for measuring core loss of a stator (3), comprising:
a base plate (1) on which a rotor (2) is provided;
an excitation winding (4) and a measurement winding (5) which are wound in advance and are arranged next to each other are sleeved on the rotor (2) in a corresponding radial sliding way;
and a movement control assembly (6) corresponding to the excitation winding (4) and the measurement winding (5), the movement control assembly (6) comprising:
the mobile component is provided with a mobile end;
a socket (613) disposed at the moving end for electrically connecting the exciting winding (4) and the measuring winding (5), respectively;
an integrator (611) having a power supply and a measurer, which are fixed to the moving assembly and electrically connected to the socket (613) through a flexible collecting harness, wherein the power supply is electrically connected to the exciting winding (4), and the measurer is electrically connected to the measuring winding (5).
2. The stator core loss measurement device according to claim 1, wherein the stator (3) has stator salient poles (31), the rotor (2) has rotor salient poles (22), and the number of the stator salient poles (31) is identical to the number of the rotor salient poles (22); when the stator (3) is measured, the exciting winding (4) and the measuring winding (5) on the rotor (2) are firstly transferred to the stator salient pole (31) through the moving end, and then the measurement is carried out.
3. The stator core loss measurement device according to claim 2, wherein the rotor (2) further comprises a shaft body (21), the shaft body (21) is rotatably provided on the base plate (1), and the rotor salient poles (22) are configured to be circumferentially spaced apart and have an even number;
each rotor salient pole (22) is wound in advance and is provided with an excitation winding (4) and a measurement winding (5) in the vicinity.
4. A stator core loss measuring apparatus according to claim 3, wherein a plurality of circumferentially spaced clamping grooves (24) are provided on the outer peripheral side of the shaft body (21), and the clamping grooves (24) are used for wrapping and clamping part of the rotor salient poles (22).
5. The stator core loss measurement device according to claim 4, wherein a dovetail groove (23) is integrally formed on one side of the clamping groove (24), and a dovetail bar corresponding to the dovetail groove (23) is fixed to the rotor salient pole (22).
6. The stator core loss measurement apparatus of claim 1, wherein the moving assembly comprises:
a mounting seat (61) with a relief groove (62) on the surface;
a screw (64) rotatably provided to the mount (61);
a moving seat (63) which is connected to the screw (64) in a transmission manner and passes through the relief groove (62); and the output end of the motor (67) is fixedly provided with a second rotating wheel (66), the second rotating wheel (66) is in transmission connection with the first rotating wheel (65) by adopting a belt, and the first rotating wheel (65) is coaxially fixed on the screw rod (64).
7. The stator core loss measurement device according to claim 6, wherein an arc-shaped guide rail (68) is further fixed on the moving seat (63), a sliding seat (69) is slidably arranged on the arc-shaped guide rail (68), and the sliding seat (69) is connected with the socket (613) as a moving end of the moving assembly.
8. The stator core loss measurement device according to claim 7, wherein a baffle is further fixed at two ends of the arc-shaped guide rail (68), a second electromagnetic block (612) is disposed on the baffle, a first electromagnetic block (610) corresponding to the second electromagnetic block (612) is disposed at two ends of the sliding seat (69), and mutual repulsion can be achieved between the first electromagnetic block (610) and the second electromagnetic block (612).
9. The stator core loss measurement device according to claim 1, wherein the exciting winding (4) and the measuring winding (5) are previously hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810247.5A CN117471183B (en) | 2023-12-27 | 2023-12-27 | Stator core loss measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810247.5A CN117471183B (en) | 2023-12-27 | 2023-12-27 | Stator core loss measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117471183A true CN117471183A (en) | 2024-01-30 |
| CN117471183B CN117471183B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311810247.5A Active CN117471183B (en) | 2023-12-27 | 2023-12-27 | Stator core loss measuring device |
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| Country | Link |
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| CN (1) | CN117471183B (en) |
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| WO2021189594A1 (en) * | 2020-03-24 | 2021-09-30 | 江苏大学 | Magnetic field-modulated hybrid-excited machine and multi-working-wave design method therefor |
| US20230231453A1 (en) * | 2022-01-14 | 2023-07-20 | Zhejiang Geely Holding Group Co., Ltd | Salient pole type hybrid excitation motor |
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2023
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| CN102027332A (en) * | 2008-05-15 | 2011-04-20 | 多摩川精机株式会社 | Angle detecting device and method for manufacturing the same |
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| Publication number | Publication date |
|---|---|
| CN117471183B (en) | 2024-03-12 |
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