CN101275871B - Temperature distribution measuring method for high speed rotating permanent magnetism synchronous electric machine rotor - Google Patents
Temperature distribution measuring method for high speed rotating permanent magnetism synchronous electric machine rotor Download PDFInfo
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- CN101275871B CN101275871B CN2008101116654A CN200810111665A CN101275871B CN 101275871 B CN101275871 B CN 101275871B CN 2008101116654 A CN2008101116654 A CN 2008101116654A CN 200810111665 A CN200810111665 A CN 200810111665A CN 101275871 B CN101275871 B CN 101275871B
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Abstract
A measuring method for a high speed rotating permanent magnetic synchronous rotor temperature distribution is used for measuring the surface temperature distribution of the permanent magnetic rotor of a high speed rotating permanent magnetic synchronous motor. The invention firstly drills a pore on the stator tooth and fixes the infrared temperature sensor in the pore to make the probe of the sensor oppose to the surface of the rotor; the invention also uses a variable-frequency governor to make the rotor in high speed rotation reduce below the critical measuring rotating speed in a short time and stabilize the operation; the data collecting system records the changes of the surface average temperature in the process of rotor deceleration measured by the sensor and the rotor surface temperature distribution of the stable operation below the critical measuring speed; the method adds two of the result to obtain the temperature distribution while rotating in high speed. The invention achieves the single sensor non-contact multi-point serial measurement for the rotor temperature distribution, avoiding the problems of installment of the sensor on the high speed rotor and the data transmission in the strong electromagnetic environment, solving the difficulties of hard measurement of the temperature distribution caused by the sensor responding time.
Description
Technical field
The present invention relates to a kind of measuring method of high speed rotating permanent magnetism synchronous electric machine rotor temperature, be used for the surface temperature distribution of the permanent-magnetism synchronous motor permanent magnetic rotor of high speed rotating is measured.
Background technology
P-m rotor in the permagnetic synchronous motor is very responsive to temperature, and temperature variation can cause its magnetic to change.Especially for the Nd-Fe-B permanent magnetic rotor, when motor long-play under certain load state, eddy current in permanent magnet and the iron core and because the caused harmonic waves of influence such as motor power and teeth groove make the bigger loss of rotor generation, these losses mostly are converted into heat and distribute, higher temperature rise occurs so cause rotor, under higher temperature, permanent magnet can demagnetize, the meeting loss of excitation causes the motor carrying load ability to descend greatly when serious.Temperature of rotor numerical value and the Temperature Distribution of clear and definite permagnetic synchronous motor under different operating conditions is most important to the safe and reliable operation of safeguarding motor, also is the important evidence of accurate instruction permagnetic synchronous motor design.
The rotor temperature rise measurement of tradition high speed rotating permanent magnetism synchronous motor mainly contains dual mode; a kind of is to shut down outage to measure; the temperature that the back connects the instrument measurement rotor surface is at once shut down in i.e. outage; so only can record the Temperature numerical at some some place of rotor; and rotor can't be calculated by the temperature loss in the rundown time section at a high speed when measuring like this, causes measuring error greatly.Another kind of mode is charged on-line measurement, promptly measures Temperature numerical in the rotor rotary course, the difficult point of on-line measurement be sensor on p-m rotor installation and measuring-signal by the outside reliable transmission problem of motor internal.Contactless mode is adopted in the signal transmission usually, the common medium of exchange has light,, magnetic etc., but because motor self will produce powerful magnetic field and electric field when operation, all there are the interference that is difficult to avoid in electricity consumption and magnetic as the media that information transmits, and therefore in the information transmission media of practical application, the transmission of light is the most general.Utility model patent " rotor temperature measurer " (application number: 00266970.6) relate to a kind of rotor temperature measuring equipment, infrared sensor is contained in stator surface, and relative in rotor, optical fiber is connected with the focus of gatherer in the infrared sensor.A kind of rotor temp measuring method of simple possible though this method be can yet be regarded as, its Temperature Distribution of measuring rotor under high speed is subject to the infrared temperature response time, and its feasibility is worth discussion.Optical fiber and gatherer are the important converting members in the measuring process, and it must accurately transmit and collect the energy of rotor radiation, otherwise are difficult to guarantee the accuracy of measuring.
Summary of the invention
The measuring method that the purpose of this invention is to provide a kind of high speed rotating permanent magnetism synchronous electric machine rotor Temperature Distribution, realize the single-sensor noncontact multiple spot continuous coverage that temperature of rotor distributes, avoid the installation of high speed rotor upper sensor and the data transmission problems under the forceful electric power magnetic environment; Solution causes the difficult problem that Temperature Distribution is difficult to measure under the high speed because of the restriction of sensor response time.
Measuring process of the present invention is as follows:
1) on the stator tooth of permagnetic synchronous motor, holes, infrared temperature sensor is fixed in the hole, make the infrared sensor probe directly relative, the output terminal of infrared temperature sensor is connected with data acquisition system (DAS) with the p-m rotor surface;
Directly relative with the p-m rotor surface, the output terminal of infrared temperature sensor is connected with data acquisition system (DAS);
When 2) measuring, utilize variable-frequence governor to make the rotor of high speed rotating in 5～20 seconds, reduce to below the criticality measurement rotating speed, and stable operation, this criticality measurement rotating speed is meant that the permagnetic synchronous motor line frequency is 1/20 o'clock pairing rotating speed of infrared temperature sensor response frequency;
3) variation and the rotor surface temperature when the following stable operation of criticality measurement rotating speed of average surface temperature distributes the Temperature Distribution when the two addition obtains the rotor high-speed rotation in the rotor reduction of speed process that records of data acquisition system (DAS) record infrared temperature sensor.
When the temperature of any object of occurring in nature is higher than absolute zero, can be to extraneous emittance, infrared temperature sensor promptly carries out temperature survey by the heat radiation energy of collecting testee, therefore has very high measuring accuracy, can realize the non-cpntact measurement of temperature.In addition, infrared sensor is made by nonmetallic materials, is passive device, is applicable to the temperature survey under the strong-electromagnetic field environment.Given this, by holing on the permanent-magnetic synchronous motor stator tooth, infrared sensor is fixed in the hole, makes the infrared sensor probe directly relative with the p-m rotor surface, the temperature of rotor that is implemented in stator side is measured.Its advantage is: 1.. sensor is easy for installation, place static stator perforation obviously to be easy to be installed on high speed rotating and the ganoid p-m rotor sensor and 2. avoid data transmission, which kind of transmission mode all causes transmission error unavoidably, and the use of transmission medium and change-over circuit can increase the complicacy of measuring cost and measuring process undoubtedly.
Description of drawings
For the p-m rotor of high speed rotating, limit by the sensor response time, single-sensor can't be realized the multipoint temperature measuring of rotor surface under high speed.The present invention proposes to measure the method that replaces high speed to measure with low speed, when measuring the rotor surface temperature distribution, use speed regulator with below the rapid near criticality measurement rotating speed of rotor rotating speed, make infrared temperature sensor can more accurately measure rotor surface temperature and distribute with very fast response time.The criticality measurement rotating speed is defined as 1/20 o'clock pairing rotating speed that the permagnetic synchronous motor line frequency is the infrared temperature sensor response frequency, guarantee that promptly the infrared temperature sensor that rotates a circle of rotor in theory can measure temperature spot more than 20, rotating speed is low more, and the temperature distributing measuring result is accurate more.Because in moderating process, temperature of rotor has landing, can be by the method for medial temperature compensation.Adopt data acquisition system (DAS) to note the medial temperature variation that p-m rotor that infrared sensor surveys arrive low speed at a high speed, the permanent magnet machine rotor Temperature Distribution when Temperature Distribution under the low speed and mean temperature difference addition just can obtain high speed.Low speed replaces carrying out at a high speed the method for temperature distributing measuring, has realized the single-sensor multiple spot continuous coverage that the high speed rotating rotor surface temperature distributes.
Fig. 1 is perforate of permasyn morot stator tooth and infrared temperature sensor mounting means synoptic diagram.Among the figure, 1-stator perforation; The 2-stator slot; The 3-infrared temperature sensor; The 4-stator tooth; The 5-rotor; The 6-signal wire.
Fig. 2 measures process flow diagram for the high speed rotating permanent magnetism synchronous electric machine rotor surface temperature distribution.
Fig. 3 is a synoptic diagram of being calculated the high speed Temperature Distribution by the low speed Temperature Distribution.Among the figure: the Temperature Distribution of rotor surface when a represents to calculate the gained high speed rotating; B is illustrated in the Temperature Distribution of being surveyed when the following motor stabilizing of criticality measurement rotating speed moves; C represents that the rotor surface temperature in the speed decline process changes; A=b+c then.
Embodiment
Rotor surface temperature when Fig. 4 is the 1500r/min operation for recording the permanent magnet machine rotor rotating speed among the embodiment distributes.
High speed rotating permanent magnetism synchronous electric machine rotor surface temperature distribution measuring method involved in the present invention, its specific operation process is as follows:
1) on the stator tooth of permagnetic synchronous motor, holes, infrared temperature sensor is fixed in the hole, make the infrared sensor probe directly relative with the p-m rotor surface, the output terminal of infrared temperature sensor is connected with data acquisition system (DAS) (as shown in Figure 1), and the energy of radiation can be converted into temperature signal and transfer to data acquisition system (DAS) p-m rotor by the infrared probe collection because temperature raises like this.Infrared temperature sensor should select to have the infrared temperature sensor of very fast response time.
When 2) measuring, utilize variable-frequence governor to make the rotor of high speed rotating in 5～20 seconds, reduce to below the criticality measurement rotating speed, and stable operation, this criticality measurement rotating speed is meant that the permagnetic synchronous motor line frequency is 1/20 o'clock pairing rotating speed of infrared temperature sensor response frequency;
3) variation and the rotor surface temperature when the following stable operation of criticality measurement rotating speed of average surface temperature distributes the Temperature Distribution when the two addition obtains the rotor high-speed rotation in the rotor reduction of speed process that records of data acquisition system (DAS) record infrared temperature sensor.As shown in Figure 3.
The overall operation flow process is shown in Fig. 2.
Embodiment:
Selection rated power is that 30kW, rated voltage are that 380V, rated current are that 49.5A, rated speed are that the three-phase permanent magnet synchronous motor of 1500r/min is as measuring object, this motor relies on the CFV-G3/P3 variable-frequence governor to control by general woods, the μ IRt/c infrared temperature sensor that thermometric selects EXERGEN company to produce with infrared temperature sensor, its response frequency is 20Hz.
Perforate on a stator tooth of permagnetic synchronous motor places the hole with μ IRt/c infrared temperature sensor, makes this sensor probe directly relative with the p-m rotor surface.μ IRt/c infrared temperature sensor output terminal links to each other with data acquisition system (DAS), and the present embodiment data acquisition system (DAS) is made up of data collecting card and computing machine.
Now measure permagnetic synchronous motor Temperature Distribution with the rotor surface of rated speed 1500r/min operation after 2 hours under nominal load, according to the response frequency of infrared temperature sensor, measurement critical rotary speed is 30r/min.Set variable-frequence governor, measure rotating speed and be made as 22.5r/min, the permagnetic synchronous motor rotating speed was made as respectively 5 seconds, 10 seconds and 20 seconds by the time set that 1500r/min is decelerated to 22.5r/min.During measurement, variable-frequence governor control permagnetic synchronous motor respectively in 5 seconds, 10 seconds and 20 seconds rotating speed reduce to 22.5r/min from 1500r/min, and with 22.5r/min stable operation.Meanwhile, the Temperature Distribution under variation of the measured moderating process rotor of μ IRt/c infrared temperature sensor surface temperature and the 22.5r/min is by the data acquisition system (DAS) collection.Rotor changes addition in the surface temperature distribution under the rotating speed 22.5r/min and rotor surface medial temperature and obtains surface temperature distribution under the rotating speed 1500r/min.Through relatively finding, when being respectively 5 seconds, 10 seconds and 20 seconds deceleration time, the rotor surface temperature distribution measured 1500r/min under is more approaching, no significant change.Fig. 4 has provided the permanent-magnetic synchronous motor rotor surface temperature and has distributed from the rotor surface temperature that 1500r/min is decelerated under the resulting 1500r/min of 22.5r/min in 10 seconds.
Claims (1)
1. high speed rotating permanent magnetism synchronous electric machine rotor temperature distribution measuring method is characterized in that the step of this measuring method is as follows:
1) on the stator tooth of permagnetic synchronous motor, holes, infrared temperature sensor is fixed in the hole, make the infrared temperature sensor probe directly relative, the output terminal of infrared temperature sensor is connected with data acquisition system (DAS) with the p-m rotor surface;
When 2) measuring, variable-frequence governor control permagnetic synchronous motor was reduced to below the criticality measurement rotating speed in 5 seconds, 10 seconds and 20 seconds respectively, be that rotating speed is reduced to 22.5r/min from 1500r/min, and with 22.5r/min stable operation, this criticality measurement rotating speed is meant that the permagnetic synchronous motor line frequency is 1/20 o'clock pairing rotating speed of infrared temperature sensor sample frequency;
3) variation and the rotor surface temperature when the following stable operation of criticality measurement rotating speed of average surface temperature distributes the Temperature Distribution when the two addition obtains the rotor high-speed rotation in the rotor moderating process that records of data acquisition system (DAS) record infrared temperature sensor.
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| CN2008101116654A CN101275871B (en) | 2008-05-16 | 2008-05-16 | Temperature distribution measuring method for high speed rotating permanent magnetism synchronous electric machine rotor |
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| CN2008101116654A CN101275871B (en) | 2008-05-16 | 2008-05-16 | Temperature distribution measuring method for high speed rotating permanent magnetism synchronous electric machine rotor |
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| CN101275871B true CN101275871B (en) | 2010-07-28 |
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| BR112012003764B1 (en) * | 2009-08-19 | 2019-08-13 | Siemens Ag | disposal having an electric machine and method for operating an electric machine |
| CN102096044B (en) * | 2010-12-13 | 2012-12-05 | 重庆长安汽车股份有限公司 | Method for measuring temperature of permanent-magnet synchronous motor of hybrid electric vehicle |
| CN102624323B (en) * | 2011-01-31 | 2014-02-26 | 上海捷能汽车技术有限公司 | Method for realizing on-site estimation on temperature of rotor magnetic steel of permanent magnet motor |
| CN102243111A (en) * | 2011-04-26 | 2011-11-16 | 上海中科深江电动车辆有限公司 | Permanent magnet motor rotor temperature measurement device and measurement method |
| CN102983552B (en) * | 2012-11-23 | 2016-01-20 | 深圳市航盛电子股份有限公司 | A kind of rotary motor rotor temperature survey and guard method, device |
| CN103090989B (en) * | 2013-01-18 | 2015-02-18 | 北京瑞恒超高压电器研究所(普通合伙) | Contact type rotor temperature measuring method and device |
| CN106208542A (en) * | 2016-08-12 | 2016-12-07 | 广西大学 | A kind of permanent-magnet synchronous motor rotor surface temperature measurement device |
| CN107764404A (en) * | 2017-10-09 | 2018-03-06 | 西华大学 | A kind of scaled bulb tubular hydraulic generator Damper Winding broken bar fault on-line monitoring method |
| CN109253821A (en) * | 2018-11-01 | 2019-01-22 | 长沙龙力自控技术有限公司 | A kind of rotor temperature measuring equipment |
| CN111605406B (en) * | 2019-02-26 | 2021-05-11 | 北京新能源汽车股份有限公司 | Control method and control device for obtaining temperature of motor rotor and vehicle |
| CN110690795A (en) * | 2019-11-11 | 2020-01-14 | 西安安凡达智能电机有限公司 | Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor |
| CN114884280B (en) * | 2022-04-28 | 2023-07-04 | 东方电气集团东方电机有限公司 | Rotor coil temperature measuring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349602Y (en) * | 1998-06-08 | 1999-11-17 | 封明文 | Motor temp. controller |
| CN2459637Y (en) * | 2000-12-20 | 2001-11-14 | 任心志 | Temp. measuring instrument for motor rotor |
| DE10201942A1 (en) * | 2002-01-19 | 2003-07-31 | Wilo Gmbh | Centrifugal pump driven by electric motor, has central temperature sensor removably inserted into bore in rear wall of motor housing enclosing stator chamber |
| EP0862259B1 (en) * | 1996-09-18 | 2003-11-12 | Fanuc Ltd | Motor with winding temperature detecting element |
-
2008
- 2008-05-16 CN CN2008101116654A patent/CN101275871B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0862259B1 (en) * | 1996-09-18 | 2003-11-12 | Fanuc Ltd | Motor with winding temperature detecting element |
| CN2349602Y (en) * | 1998-06-08 | 1999-11-17 | 封明文 | Motor temp. controller |
| CN2459637Y (en) * | 2000-12-20 | 2001-11-14 | 任心志 | Temp. measuring instrument for motor rotor |
| DE10201942A1 (en) * | 2002-01-19 | 2003-07-31 | Wilo Gmbh | Centrifugal pump driven by electric motor, has central temperature sensor removably inserted into bore in rear wall of motor housing enclosing stator chamber |
Non-Patent Citations (5)
| Title |
|---|
| JP特开平11-113232A 1999.04.23 |
| 曹风兰，王旅生，黄松岭.立式轮盘变幅循环旋转试验器.航空动力学报5 4.1990,5(4),307-308. |
| 曹风兰,王旅生,黄松岭.立式轮盘变幅循环旋转试验器.航空动力学报5 4.1990,5(4),307-308. * |
| 郇中杰，陈斌.高速旋转转子温度测量的实验研究.计量与测试技术1997 2.1997,1997(2),17-20. |
| 郇中杰,陈斌.高速旋转转子温度测量的实验研究.计量与测试技术1997 2.1997,1997(2),17-20. * |
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