CN101975923B - System for testing loading performance of motor - Google Patents
System for testing loading performance of motor Download PDFInfo
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- CN101975923B CN101975923B CN 201010264126 CN201010264126A CN101975923B CN 101975923 B CN101975923 B CN 101975923B CN 201010264126 CN201010264126 CN 201010264126 CN 201010264126 A CN201010264126 A CN 201010264126A CN 101975923 B CN101975923 B CN 101975923B
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Abstract
The invention discloses a system for testing loading performance of a motor which comprises a driving power supply, a motor to be tested, a coupling, a synchronous generator and a synchronous generator load and a measuring and controlling unit. In the invention, through embedding a detection winding on a stator power winding of the synchronous generator, an input power, a rotating speed, an output power, an output torque of the motor to be tested and motor efficiency can be obtained only by detecting an input voltage and an input current of the motor to be tested, an induction electromotive force and induction electromotive frequency of the detection winding of the synchronous generator and an output current of the stator power winding of the synchronous generator during practical tests, thereby omitting a revolution speed transducer and a torque transducer which are necessary in the traditional system for testing the loading performance of the motor, simplifying the test system and reducing the cost.
Description
Technical field
The present invention relates to the motor technical field of measurement and test, more particularly, relate to a kind of motor loading performance test macro.
Background technology
In scientific research and production practices, often need test motor, the pattern (being the motor generator pattern) that adopts the motor drives synchronous generator is one of form of motor loading performance test.Existing motor loading performance test macro based on the motor generator pattern when the rotating speed that detects motor and output torque, needs to rely on speed probe and torque sensor, thereby makes the test system structure complexity, and cost is higher.
Summary of the invention
In view of this, the invention provides a kind of motor loading performance test macro, to solve existing motor loading performance test system structure complexity and cost problem of higher based on the motor generator pattern, technical scheme is as follows:
A kind of motor loading performance test macro comprises: driving power, tested motor, shaft coupling, synchronous generator, synchronous generator load and measurement and control unit; Wherein:
Described driving power drives tested motor work;
Described tested motor drives the synchronous generator generating by shaft coupling;
Described synchronous generator is to synchronous generator load power supply, and have on its stator with stator power winding follow embedding around the detection winding;
Load links to each other described measurement and control unit with synchronous generator with driving power, tested motor, synchronous generator respectively, induction electromotive force and the induction electromotive force frequency of the input voltage by detecting tested motor and input current, synchronous generator machine testing winding, and the output current of synchronous generator stator power winding, obtain power input, rotating speed, output power, output torque and the motor efficiency of tested motor.
Preferably, in the said system, described measurement and control unit comprises:
The input power measurement unit for detection of input voltage and the input current of tested motor, calculates the power input of tested motor;
The tachometric survey unit, induction electromotive force frequency for detection of synchronous generator machine testing winding, obtain the induction electromotive force frequency of synchronous generator stator power winding, and calculate the rotating speed of tested motor according to the magnetic pole logarithm of this induction electromotive force frequency and synchronous generator;
The output power measurement unit, induction electromotive force for detection of synchronous generator machine testing winding, obtain the induction electromotive force of synchronous generator stator power winding, detect the output current of synchronous generator stator power winding, output current according to the synchronous generator stator power winding induction electromotive force that records and synchronous generator stator power winding, calculate the input electromagnetic power of synchronous generator, ignore the synchronous generator frictional dissipation, the input electromagnetic power of synchronous generator is approximately the output power of tested motor;
Output torque measurement unit is used for the tested motor speed that records according to the tachometric survey unit, and the tested output power of motor that records of output power measurement unit, calculates the output torque of tested motor;
The efficiency measurement unit is used for the tested motor input power that records according to the input power measurement unit, and the tested output power of motor that records of output power measurement unit, calculates the efficient of tested motor.
By above technical scheme as can be seen, the present invention is by following embedding around detecting winding at the stator power winding of synchronous generator, during actual the test, only need by detecting input voltage and the input current of tested motor, the induction electromotive force of synchronous generator machine testing winding and induction electromotive force frequency, and the output current of synchronous generator stator power winding, just can obtain the power input of tested motor, rotating speed, output power, output torque and motor efficiency, thereby the traditional necessary speed probe of motor loading performance test macro and torque sensor based on the motor generator pattern have been saved, simplify test macro, reduced cost.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of motor loading performance test system structure synoptic diagram that Fig. 1 provides for the embodiment of the invention;
The structural representation of the measurement and control unit that Fig. 2 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to shown in Figure 1, a kind of motor loading performance test macro of the embodiment of the invention can comprise:
Driving power 101, tested motor 102, shaft coupling 103, synchronous generator 104, synchronous generator load 105 and measurement and control unit 106.
Wherein, driving power 101 drives tested motor 102 work.
Tested motor 102 drives synchronous generator 104 generatings by shaft coupling 103.
Synchronous generator 104 is to synchronous generator load 105 power supply, and have on its stator with stator power winding follow embedding around the detection winding.
Measurement and control unit 106 links to each other with driving power 101, tested motor 102, synchronous generator 104 and synchronous generator load 105 respectively, input voltage by detecting tested motor 102 and input current, synchronous generator 104 detect induction electromotive force and the induction electromotive force frequency of windings, and the output current of synchronous generator 104 stator power windings, obtain power input, rotating speed, output power, output torque and the motor efficiency of tested motor 102.
In the test macro of the present invention, synchronous alternating-current generator 104 has the detection winding, and the stator power winding that detects winding and synchronous generator 104 in stator, follow embedding around, it is identical with the magnetic flux of stator power winding namely to detect winding, therefore the induction electromotive force ratio that detects winding and stator winding equals to detect the number of turn ratio of winding and stator power winding, measurement and control unit 106 just can obtain induction electromotive force and the induction electromotive force frequency of stator power winding by detecting induction electromotive force and the induction electromotive force frequency that synchronous alternating-current generator 104 detects winding so.
During actual the test, measurement and control unit 106 is by detecting the output current of synchronous generator 104 stator power windings, and according to the induction electromotive force of the synchronous generator 104 stator power windings that record, obtain the input electromagnetic power of synchronous alternating-current generator 104, ignore the synchronous generator frictional dissipation, the input electromagnetic power of synchronous generator 104 is approximately the output power of tested motor 102; Measurement and control unit 106 is by the frequency of synchronous generator 104 induction electromotive forces that record, and according to the number of pole-pairs of synchronous generator 104, obtains the rotating speed of tested motor 102; Measurement and control unit 106 obtains the output torque of tested motor 102 by output power and the rotating speed of the tested motor 102 that records; Measurement and control unit 106 obtains the power input of tested motor 102 by input voltage and the input current of the tested motor 102 that records; Measurement and control unit 106 obtains the efficient of tested motor 102 by power input and the output power of the tested motor 102 that records.
From above-described embodiment as can be seen, the present invention follows embedding to detect winding around one by giving on the stator power winding of synchronous alternating-current generator, during actual the test, only need by detecting input voltage and the input current of tested motor, the induction electromotive force of synchronous generator machine testing winding and induction electromotive force frequency, and the output current of synchronous generator stator power winding, just can obtain the power input of tested motor, rotating speed, output power, output torque and motor efficiency, thereby the traditional necessary speed probe of motor loading performance test macro and torque sensor have been saved, simplify test macro, reduced cost.
In other embodiments, as shown in Figure 2, the measurement and control unit 106 that the embodiment of the invention provides can comprise:
Input power measurement unit 106a for detection of input voltage and the input current of tested motor 102, calculates the power input of tested motor 102;
Tachometric survey unit 106b, detect the induction electromotive force frequency of winding for detection of synchronous generator 104, obtain the induction electromotive force frequency of synchronous generator 104 stator power windings, and calculate the rotating speed of tested motor 102 according to the magnetic pole logarithm of this induction electromotive force frequency and synchronous generator 104.
Output power measurement unit 106c, detect the induction electromotive force of winding for detection of synchronous generator 104, obtain the induction electromotive force of synchronous generator 104 stator power windings, detect the output current of synchronous generator 104 stator power windings, according to the synchronous generator 104 stator power winding induction electromotive forces that record and the output current of synchronous generator 104 stator power windings, calculate the input electromagnetic power of synchronous generator 104, ignore the frictional dissipation of synchronous generator 104, the input electromagnetic power of synchronous generator 104 is approximately the output power of tested motor 102;
Output torque measurement unit 106d is used for tested motor 102 rotating speeds that record according to tachometric survey unit 106b, and tested motor 102 output powers that record of output power measurement unit 106c, calculates the output torque of tested motor 102.
Motor efficiency measuring unit 106e, for tested motor 102 power inputs that record according to input power measurement unit 106a, and tested motor 102 output powers that record of output power measurement unit 106c, calculate the efficient of tested motor 102.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a motor loading performance test macro is characterized in that, comprising: driving power, tested motor, shaft coupling, synchronous generator, synchronous generator load and measurement and control unit; Wherein:
Described driving power drives tested motor work;
Described tested motor drives the synchronous generator generating by shaft coupling;
Described synchronous generator is to synchronous generator load power supply, and have on its stator with stator power winding follow embedding around the detection winding; Described detection winding is identical with the magnetic flux of stator power winding;
Load links to each other described measurement and control unit with synchronous generator with driving power, tested motor, synchronous generator respectively, induction electromotive force and the induction electromotive force frequency of the input voltage by detecting tested motor and input current, synchronous generator machine testing winding, and the output current of synchronous generator stator power winding, obtain power input, rotating speed, output power, output torque and the motor efficiency of tested motor.
2. system according to claim 1 is characterized in that, described measurement and control unit comprises:
The input power measurement unit for detection of input voltage and the input current of tested motor, calculates the power input of tested motor;
The tachometric survey unit, induction electromotive force frequency for detection of synchronous generator machine testing winding, obtain the induction electromotive force frequency of synchronous generator stator power winding, and calculate the rotating speed of tested motor according to the magnetic pole logarithm of this induction electromotive force frequency and synchronous generator;
The output power measurement unit, induction electromotive force for detection of synchronous generator machine testing winding, obtain the induction electromotive force of synchronous generator stator power winding, detect the output current of synchronous generator stator power winding, output current according to the synchronous generator stator power winding induction electromotive force that records and synchronous generator stator power winding, calculate the input electromagnetic power of synchronous generator, ignore the synchronous generator frictional dissipation, the input electromagnetic power of synchronous generator is approximately the output power of tested motor;
Output torque measurement unit is used for the tested motor speed that records according to the tachometric survey unit, and the tested output power of motor that records of output power measurement unit, calculates the output torque of tested motor;
The efficiency measurement unit is used for the tested motor input power that records according to the input power measurement unit, and the tested output power of motor that records of output power measurement unit, calculates the efficient of tested motor.
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| CN 201010264126 CN101975923B (en) | 2010-08-24 | 2010-08-24 | System for testing loading performance of motor |
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| CN 201010264126 CN101975923B (en) | 2010-08-24 | 2010-08-24 | System for testing loading performance of motor |
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| CN101975923B true CN101975923B (en) | 2013-07-03 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102435946A (en) * | 2011-09-02 | 2012-05-02 | 上海中科深江电动车辆有限公司 | Off-line detection device for driving motor of electric vehicle |
| CN103759870B (en) * | 2014-01-22 | 2015-10-28 | 佛山市川东磁电股份有限公司 | A kind of measuring method for intermittent work device output power value and system |
| TWI551874B (en) * | 2015-03-13 | 2016-10-01 | 財團法人工業技術研究院 | Motor efficiency analysis method for motor inverter |
| CN104965174B (en) * | 2015-06-26 | 2018-12-18 | 中交机电工程局有限公司 | Alternating current generator efficiency and runnability integrated test system |
| CN105137168B (en) * | 2015-08-29 | 2018-06-01 | 北京天航华创科技股份有限公司 | A kind of low pressure case dynamic load sealing test system |
| CN107328505A (en) * | 2016-04-29 | 2017-11-07 | 宝山钢铁股份有限公司 | A kind of sedimentation basin mud scraper torque detecting apparatus and method |
| CN107329084B (en) * | 2017-08-01 | 2020-04-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Linear motor performance testing device and method, storage medium and processor |
| CN110411632A (en) * | 2018-04-28 | 2019-11-05 | 财团法人金属工业研究发展中心 | The characteristic analysis system of rotating device |
| CN110308392B (en) * | 2019-07-04 | 2021-12-21 | 哈尔滨工程大学 | Method for testing mechanical characteristics of double-branch AC permanent magnet motor |
| CN110567622A (en) * | 2019-09-24 | 2019-12-13 | 和平长盛电机有限公司 | DC motor dynamometer |
| CN110850286B (en) * | 2019-10-21 | 2022-03-11 | 上海奥波智能科技有限公司 | Method for testing electromagnetic characteristics of permanent magnet brushless motor |
| CN110703030A (en) * | 2019-11-15 | 2020-01-17 | 陕西航空电气有限责任公司 | Electromagnetic compatibility testing system for motor in on-load working state |
| CN111562453A (en) * | 2020-04-03 | 2020-08-21 | 大全集团有限公司 | Method for evaluating power generation capacity of MGP system |
| CN111337831A (en) * | 2020-04-28 | 2020-06-26 | 浙江睿驰同利汽车电子有限公司 | Method and system for testing torque of high-speed motor |
| CN111351601A (en) * | 2020-04-28 | 2020-06-30 | 浙江睿驰同利汽车电子有限公司 | Method and device for testing torque of high-speed motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4335619A (en) * | 1980-03-05 | 1982-06-22 | Westinghouse Electric Corp. | Motor load test apparatus |
| CN101408588A (en) * | 2008-11-26 | 2009-04-15 | 北京理工大学 | Automatic test system of electric automobile motor drive system performance |
| CN101603997B (en) * | 2009-07-03 | 2011-03-30 | 哈尔滨工业大学 | Method for testing parameters of synchronous motor and device for achieving same |
| CN201837711U (en) * | 2010-08-24 | 2011-05-18 | 上海奥波电子有限公司 | Test system for load performance of electric motor |
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