CN106610454B - Motor iron loss quantitative detection device and method based on heat derivation - Google Patents
Motor iron loss quantitative detection device and method based on heat derivation Download PDFInfo
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- CN106610454B CN106610454B CN201510488939.1A CN201510488939A CN106610454B CN 106610454 B CN106610454 B CN 106610454B CN 201510488939 A CN201510488939 A CN 201510488939A CN 106610454 B CN106610454 B CN 106610454B
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- heat
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- iron loss
- conducting medium
- motor body
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 48
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000009795 derivation Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 230000005284 excitation Effects 0.000 claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 8
- 238000004321 preservation Methods 0.000 description 7
- 229910000976 Electrical steel Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention relates to a quantitative detection device and a quantitative detection method for iron loss of a motor based on heat conduction, wherein the detection device comprises a heat insulation container, a heat conducting medium, an excitation unit, a motor body to be detected and a temperature measuring element, wherein the heat conducting medium is uniformly distributed in the heat insulation container, and the excitation unit and the temperature measuring element are placed in the heat insulation container; the detection method comprises the following steps: and placing the motor body to be tested in the heat insulation container, enabling the excitation unit to act on the motor body to be tested to generate iron loss and heat, leading out the emitted heat through the heat conducting medium, and calculating to obtain the iron loss of the motor after the temperature measuring element measures the temperature change of the heat conducting medium. Compared with the prior art, the method has the advantages of simplicity in operation, true and reliable measurement results and the like.
Description
Technical Field
The invention relates to a motor iron loss quantitative detection device and method, in particular to a motor iron loss quantitative detection device and method based on heat export.
Background
The loss of the motor is divided into copper loss, iron loss and mechanical loss, and the three losses are main factors influencing the working efficiency of the motor. Since the iron loss and the mechanical loss introduce more experience parameters in the design process, how to accurately and quantitatively strip the copper loss, the iron loss and the mechanical loss is always a technical problem puzzling the motor industry. The high-speed motor has a relatively large iron loss and a relatively large mechanical loss due to an extremely high rotational speed, compared with the constant-speed motor. Therefore, accurately separating the core loss of the motor provides scientific guidance for the design improvement of the high-speed motor.
The calculation of the iron loss in the motor efficiency design stage needs to refer to the material iron loss parameters provided by silicon steel sheet manufacturers. Epstein square ring is adopted by silicon steel sheet manufacturers the testing method is used for testing the iron loss of the electrical steel sheet. However, the method has the defects of complicated preparation and loading of the sample, stress relief annealing, waste of a large amount of sample materials and the like, and the test instrument is huge in size and is not suitable for the requirement of field detection of the iron loss of the motor.
The epstein square ring test is a test for a raw material standard sample, and can not accurately reflect the process treatment of stamping, riveting, fine grinding and the like of a silicon steel sheet and the change of iron loss parameters in the actual state after the silicon steel sheet is assembled to a motor body. Meanwhile, parts made of other magnetic materials exist in the whole motor, and the parts can generate iron loss under the action of an alternating magnetic field. Therefore, the iron loss calculation is greatly different from the actual iron loss of the whole machine by only adopting the test result of the epstein square ring, and the iron loss measurement of the whole machine needs to be further explored.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a quantitative detection device and method for the iron loss of a motor based on heat derivation, which are simple to operate and have a real and accurate measurement result.
The aim of the invention can be achieved by the following technical scheme:
the quantitative detection device for the iron loss of the motor based on heat conduction is characterized by comprising a heat insulation and preservation container, a heat conducting medium, an excitation unit, a motor body to be detected and a temperature measuring element, wherein the heat conducting medium is uniformly distributed in the heat insulation and preservation container, and the excitation unit and the temperature measuring element are placed in the heat preservation container;
and placing the motor body to be tested in the heat insulation container, enabling the excitation unit to act on the motor body to be tested to generate iron loss and heat, leading out the emitted heat through the heat conducting medium, and calculating to obtain the iron loss of the motor after the temperature measuring element measures the temperature change of the heat conducting medium.
The excitation unit comprises a motor magnetizing rotor to be detected, and stirring blades and a dragging motor for stirring the heat-conducting medium, wherein the stirring blades and the dragging motor are respectively connected to a rotating shaft of the motor magnetizing rotor to be detected.
The heat conducting medium is fluid heat conducting medium.
The heat insulation container is internally provided with a retainer for fixing the motor body to be tested.
The temperature measuring element comprises a temperature sensor and a data processor which are connected in sequence, and the temperature sensor is placed in the heat insulation container.
The detection method comprises the following steps:
(1) Assembling a motor body to be tested, measuring the mass of the motor body to be tested to be M, and installing the motor body to be tested in a heat-insulating container;
(2) Injecting a heat conducting medium with mass of m and specific heat capacity of C into the heat insulation container;
(3) Inserting a magnetizing rotor of a motor to be detected in the excitation unit into the motor body to be detected and fixing the magnetizing rotor in the heat insulation container;
(4) The dragging motor applies alternating excitation load to the motor body to be tested, the set time T is set for stable operation, and the temperature change of the heat conducting medium is measured to be delta T through the temperature measuring element;
(5) The energy Q required by calculation is calculated according to the temperature change delta T of the heat conducting medium, and the calculation formula is as follows: q=cmΔt;
(6) Converting the energy into iron loss power P of the motor body to be detected, wherein the calculation formula is P=Q/t;
(7) And converting the iron loss power into a stator iron loss material parameter PFE, wherein the calculation formula is PFE=P/M.
Compared with the prior art, the invention has the following advantages:
(1) Aiming at the whole machine level test, the detection method has the advantages that the result is closer to the actual working condition, and the data is more reliable;
(2) The detection method aims at considering the influence of the processing technology and the assembling technology of the magnetic material on the iron loss parameter, and the result is more reliable;
(3) The detection method only considers the iron loss heating of the magnetic material according to the test principle, has no mechanical loss and copper loss, is simple to operate and has reliable results;
(4) The detection method can subdivide and strip motor loss (copper loss/iron loss/mechanical loss) and provide scientific guidance for subsequent improvement;
(5) The detection method is particularly suitable for detecting the iron loss of the whole machine of the medium-sized and small-sized motor;
(6) The obtained result can directly correct the finite element model of the motor, so that the subsequent simulation result is more reliable.
Drawings
Fig. 1 is a schematic structural diagram of a quantitative detection device for iron loss of a motor based on heat derivation.
In the figure, 1 is a motor body to be measured, 2 is a motor magnetizing rotor to be measured, 3 is a stirring blade, 4 is a dragging motor, 5 is a heat insulation container, 6 is a temperature measuring element, 7 is a retainer, and 8 is a heat conducting medium.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in fig. 1, the quantitative detection device for iron loss of a motor based on heat export comprises a heat insulation and preservation container 5, a heat conducting medium 8, an excitation unit, a motor body 1 to be detected and a temperature measuring element 6, wherein the heat conducting medium 8 is a fluid heat conducting medium 8 which is uniformly distributed in the heat insulation and preservation container 5, the excitation unit and the temperature measuring element 6 are fixed in the heat insulation and preservation container, and the heat insulation and preservation container 5 is adopted to reduce heat exchange between a system and an external environment. The excitation unit comprises a motor magnetizing rotor 2 to be measured, a stirring blade 3 and a dragging motor 4 for stirring the heat conducting medium 8, wherein the stirring blade 3 and the dragging motor 4 are respectively connected to a rotating shaft of the motor magnetizing rotor 2 to be measured. In addition, a retainer 7 for fixing the motor body 1 to be tested is also arranged in the heat insulation container 5. According to the actual working condition, the motor body 1 to be tested generates iron loss and heats through the excitation unit, the heat generated by the iron loss is led out by the heat conducting medium 8, the temperature change of the heat conducting medium 8 is measured by the temperature measuring element 6, and finally the heat productivity of the motor body 1 to be tested is calculated, so that the relevant parameters such as the iron loss can be further obtained. Wherein the heat conducting medium 8 is required to be stirred by the stirring blade 3, so that the heat is rapidly led out and uniformly heated, and the reliability of the indication value of the temperature measuring element 6 is ensured. In order to make the temperature rise of the heat conducting medium 8 obvious and facilitate measurement, a plurality of motor bodies 1 to be tested can be adopted for simultaneous experiments.
The invention relates to a quantitative detection method for motor core loss based on heat derivation, which specifically comprises the following steps:
(1) Assembling a motor body 1 to be tested, measuring the mass of the motor body to be tested to be M (Kg), and mounting the motor body on a retainer 7 in a heat-insulating container 5;
(2) Injecting a fluid heat conducting medium 8 with mass of m (Kg) and specific heat capacity of C (J/Kg ℃) into the heat insulation container 5;
(3) Inserting a magnetizing rotor 2 of a motor to be detected in an excitation unit into a motor body 1 to be detected and fixing the magnetizing rotor in a heat insulation container 5;
(4) By applying alternating exciting load to the motor body 1 to be tested through the dragging motor 4, stabilizing the operation for a set time T(s), and measuring the temperature change of the heat conducting medium 8 to be delta T (DEG C).
(5) The energy Q (J) required is calculated according to the temperature change delta T of the heat conducting medium 8, and the calculation formula is as follows: q=cmΔt;
(6) Converting the energy into iron loss power P (W) of the motor body 1 to be detected, wherein the calculation formula is P=Q/t;
(7) Converting iron loss power into stator iron loss material parameter P FE (W/Kg) with a calculation formula of P FE ＝P/M。
Claims (5)
1. The quantitative detection device for the iron loss of the motor based on heat conduction is characterized by comprising a heat insulation container, a heat conducting medium, an excitation unit, a motor body to be detected and a temperature measuring element, wherein the heat conducting medium is uniformly distributed in the heat insulation container, and the excitation unit and the temperature measuring element are placed in the heat insulation container;
the motor body to be tested is placed in the heat insulation container, the excitation unit acts on the motor body to be tested to generate iron loss and generate heat, the generated heat is led out through the heat conducting medium, and the temperature measuring element measures the temperature change of the heat conducting medium and then calculates to obtain the iron loss of the motor;
the excitation unit comprises a motor magnetizing rotor to be detected, and stirring blades and a dragging motor for stirring the heat-conducting medium, wherein the stirring blades and the dragging motor are respectively connected to a rotating shaft of the motor magnetizing rotor to be detected.
2. The quantitative detection device for iron loss of motor based on heat conduction of claim 1, wherein the heat conducting medium is a fluid heat conducting medium.
3. The quantitative detection device for the iron loss of the motor based on heat conduction according to claim 1, wherein a retainer for fixing the motor body to be detected is arranged in the heat-insulating container.
4. The quantitative detection device for the iron loss of the motor based on heat derivation according to claim 1, wherein the temperature measuring element comprises a temperature sensor and a data processor which are connected in sequence, and the temperature sensor is placed in a heat insulation container.
5. A detection method of the heat-derived motor core loss quantitative detection device according to claim 1, characterized in that the detection method comprises the steps of:
(1) Assembling a motor body to be tested, measuring the mass of the motor body to be tested to be M, and installing the motor body to be tested in a heat-insulating container;
(2) Injecting a heat conducting medium with mass of m and specific heat capacity of C into the heat insulation container;
(3) Inserting a magnetizing rotor of a motor to be detected in the excitation unit into the motor body to be detected and fixing the magnetizing rotor in the heat insulation container;
(4) The dragging motor applies alternating excitation load to the motor body to be tested, the set time T is set for stable operation, and the temperature change of the heat conducting medium is measured to be delta T through the temperature measuring element;
(5) The energy Q required by calculation is calculated according to the temperature change delta T of the heat conducting medium, and the calculation formula is as follows: q=cmΔt;
(6) Converting the energy into iron loss power P of the motor body to be detected, wherein the calculation formula is P=Q/t;
(7) Converting iron loss power into stator iron loss material parameter P FE The calculation formula is P FE ＝P/M。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510488939.1A CN106610454B (en) | 2015-08-11 | 2015-08-11 | Motor iron loss quantitative detection device and method based on heat derivation |
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| CN201510488939.1A CN106610454B (en) | 2015-08-11 | 2015-08-11 | Motor iron loss quantitative detection device and method based on heat derivation |
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| CN106610454A CN106610454A (en) | 2017-05-03 |
| CN106610454B true CN106610454B (en) | 2023-08-29 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07218610A (en) * | 1994-02-04 | 1995-08-18 | Nippon Steel Corp | Measuring device for iron loss in rotating magnetic field of motor core |
| US5510664A (en) * | 1992-09-10 | 1996-04-23 | Ricoh Company, Ltd. | Brushless motor |
| CN101221221A (en) * | 2008-01-25 | 2008-07-16 | 四川东风电机厂有限公司 | Bulb through-flow type hydraulic generator stator iron loss test method |
| CN101788512A (en) * | 2010-02-23 | 2010-07-28 | 中国电力科学研究院 | Device and method for measuring heat effect of magnetic material in alternating magnetic field |
| CN201852888U (en) * | 2010-10-28 | 2011-06-01 | 河南省电力公司平顶山供电公司 | Device for testing dielectric loss under high voltage |
| JP2012052948A (en) * | 2010-09-02 | 2012-03-15 | Seiko Epson Corp | Device and method for measuring loss of electric motor |
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| CN104467303A (en) * | 2013-09-16 | 2015-03-25 | 现代自动车株式会社 | Structure of measuring iron loss of motor stator core |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5149431B2 (en) * | 2011-07-29 | 2013-02-20 | ファナック株式会社 | Temperature detection device that detects the temperature of the mover of the motor |
-
2015
- 2015-08-11 CN CN201510488939.1A patent/CN106610454B/en active Active
Patent Citations (8)
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|---|---|---|---|---|
| US5510664A (en) * | 1992-09-10 | 1996-04-23 | Ricoh Company, Ltd. | Brushless motor |
| JPH07218610A (en) * | 1994-02-04 | 1995-08-18 | Nippon Steel Corp | Measuring device for iron loss in rotating magnetic field of motor core |
| CN101221221A (en) * | 2008-01-25 | 2008-07-16 | 四川东风电机厂有限公司 | Bulb through-flow type hydraulic generator stator iron loss test method |
| CN101788512A (en) * | 2010-02-23 | 2010-07-28 | 中国电力科学研究院 | Device and method for measuring heat effect of magnetic material in alternating magnetic field |
| JP2012052948A (en) * | 2010-09-02 | 2012-03-15 | Seiko Epson Corp | Device and method for measuring loss of electric motor |
| CN201852888U (en) * | 2010-10-28 | 2011-06-01 | 河南省电力公司平顶山供电公司 | Device for testing dielectric loss under high voltage |
| CN102738993A (en) * | 2012-07-09 | 2012-10-17 | 福建亚南电机有限公司 | Internal-rotor intermediate-frequency permanent magnet generator device |
| CN104467303A (en) * | 2013-09-16 | 2015-03-25 | 现代自动车株式会社 | Structure of measuring iron loss of motor stator core |
Non-Patent Citations (1)
| Title |
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Effective date of registration: 20231225 Address after: 201107 room 337, building 2, 168 Mingjia Road, Minhang District, Shanghai Patentee after: SHANGHAI MINGZHI PAIBOSI AUTOMATION TECHNOLOGY CO.,LTD. Address before: No.168 Mingjia Road, Minbei Industrial Zone, Minhang District, Shanghai 201107 Patentee before: SHANGHAI MOONS' ELECTRIC Co.,Ltd. |