CN202433454U - Frequency converter load testing platform with electric energy feedback function - Google Patents
Frequency converter load testing platform with electric energy feedback function Download PDFInfo
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- CN202433454U CN202433454U CN2011205517088U CN201120551708U CN202433454U CN 202433454 U CN202433454 U CN 202433454U CN 2011205517088 U CN2011205517088 U CN 2011205517088U CN 201120551708 U CN201120551708 U CN 201120551708U CN 202433454 U CN202433454 U CN 202433454U
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Abstract
The utility model discloses a frequency converter load testing platform with an electric energy feedback function. The frequency converter load testing platform comprises a load frequency converter, a load motor, a tested motor, a tested frequency converter and an intelligent digital torsion rotating speed tester, wherein the three-phase output end of the load frequency converter is connected with the input end of the load motor; the output end of the load motor is connected to the intelligent digital torsion rotating speed tester; the intelligent digital torsion rotating speed tester is connected with the tested motor; the input end of the tested motor is connected with the three-phase output end of the tested frequency converter; the input end of the tested frequency converter is connected with a three-phase power supply; and a direct-current bus of the load frequency converter is connected with a direct-current bus of the tested frequency converter. The frequency converter load testing platform with the electric energy feedback function has the beneficial effects that the energy output to the tested motor is reutilized due to the adoption of electric energy feedback design, and therefore energy obtained from a power grid is reduced, electric energy is saved, and actual measurement proves that energy is saved by over 70%.
Description
Technical field
The utility model belongs to the converter technology field, relates in particular to a kind of inverter load test platform with electric energy feedback.
Background technology
Along with rapid development of economy, energy problem becomes day by day and becomes the problem that people are concerned about most more, and the energy divides renewable resource and nonrenewable resources, and when nonrenewable resources shortage time more and more, how energy savings is the current problem that need solve.The current industrial electric cost continues to increase; In order to reduce cost, speed control device has obtained using widely in factory, is accompanied by the continuous maturation of technology; Frequency control equipment is favourably welcome in industry, and this has brought good opportunities and challenges just for frequency converter manufacturer.
Frequency converter frequency conversion principle is to utilize rectified three-phase circuit that 220 V or 380 V industrial frequency AC commercial power rectification are converted into direct current, through controlled three-phase inverting circuit direct current is converted into the alternating current of required frequency and amplitude again, in order to drive three phase alternating current motor.Reach purpose through changing output frequency to electric machine speed regulation.
The core parts of frequency converter are the power electronic equipments of rectification and inverter circuit, and wherein inversion module is the main pyrotoxin of whole equipment, accounts for about 80%.The cooling system quality of frequency converter has directly determined the serviceability of frequency converter.Therefore, in all frequency converter delivery test links, all must comprise the inverter load testing experiment, promptly through letting frequency converter band nominal load and overburden move to investigate the heat dispersion of inversion module and whole inverter.
Summary of the invention
The purpose of the utility model is to provide a kind of inverter load test platform with electric energy feedback that improves efficiency of energy utilization.
For the technical scheme that reaches the employing of goal of the invention the utility model is:
A kind of inverter load test platform with electric energy feedback; It is characterized in that: comprise load inverter, load motor, by measured motor, tested frequency converter, intelligent digital moment of torsion rotating speed tester; The three-phase output end of said load inverter is connected with the input end of load motor; The output terminal of said load motor is connected on the intelligent digital moment of torsion rotating speed tester; Be connected with by measured motor on the said intelligent digital moment of torsion rotating speed tester, saidly be connected with the three-phase output end of tested frequency converter by the input end of measured motor, the input end of said tested frequency converter is connected with three-phase supply; The dc bus of said load inverter is connected with the dc bus of tested frequency converter.
Further, said intelligent digital moment of torsion rotating speed tester with all be connected with load motor by measured motor through universal joint.
Further, the input end of said tested frequency converter is in series with and is used to detect the three phase rectifier cell operation state of tested frequency converter and monitors the inlet wire current detecting unit whether it is in the balance duty.
Further, the output terminal of said tested frequency converter is in series with the three-phase inversion cell operation state that is used to detect tested frequency converter, monitors its whether outlet current detecting unit of showing of phase shortage and calibration frequency converter output current.
Further, the output terminal of said tested frequency converter is parallel with the outlet voltage detection unit that the output voltage of the output voltage that is used to detect tested frequency converter and calibration frequency converter shows.
Further, the output terminal of said tested frequency converter is connected with the phase sequence relay of the output phase sequence that is used to judge tested frequency converter through open and shut valve.
Further, said load inverter is provided with fastp-acting fuse with the dc bus that is connected of tested frequency converter.
The technical conceive of the utility model; Tested frequency converter drives by measured motor and moves by certain power, is passed to load motor by the measured motor output mechanical energy through rotor axis mechanical, and load motor is operated in four-quadrant; Promptly be in generating state; After producing the fly-wheel diode rectification of electric energy, energy delivery is returned tested frequency converter, thereby form the load testing major loop of energy feedback through dc bus via the inversion unit of load inverter.
The intelligent digital moment of torsion rotating speed tester of the utility model passes through two universal joints and is connected by the rotor axis mechanical of measured motor and load motor; Detect actual output torque, rotating speed and power on the tested machine shaft; The actual torque of verification frequency converter, rotating speed control effect compared to traditional slip electric motor proving installation, have been widened the scope of load testing greatly; Make that the function of test platform is abundanter, thereby can more comprehensively assess the performance of tested frequency converter.
Fastp-acting fuse on the utility model dc bus cuts off the connection of two frequency changer direct current bus when the excessive or tested frequency converter of feedback current is unusual on dc bus, the protection load inverter; The phase sequence relay of tested frequency converter; Through one continuous with tested frequency converter output (another one is for being connected with tested frequency converter output by the measured motor input) of an open and shut valve; Judge the output phase sequence of tested frequency converter, avoid the inconsistent overload that causes of two motor steerings.
The beneficial effect of the utility model:
(1) loading of the reverse electric operation of realization also can realize the loading of homophase generator operation.Owing to be closed loop torque control, can realize zero-speed, low speed and the high-precision loading of high torque (HT) at a high speed.
(2) machinery is hard to be connected because motor is connected to, and it is very fast that the torque response of asynchronous machine is compared slip electric motor, and the loading response speed is very fast, can satisfy the test request of most of occasions.
(3) owing to take the electric energy feedback type design, export to by the energy of measured motor and utilized again, therefore reduced the energy that obtains from electrical network, thereby saved electric energy, survey energy-conservation more than 70%.
(4) complete function, energy-saving effect is remarkable, has high economic worth and social value.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model.
Embodiment
Come the utility model is further specified below in conjunction with specific embodiment, but the utility model is not confined to these embodiments.One skilled in the art would recognize that the utility model contained in claims scope all alternativess, improvement project and the equivalents that possibly comprise.
Referring to Fig. 1; A kind of inverter load test platform with electric energy feedback; Comprise load inverter 6, load motor 5, by measured motor 2, tested frequency converter 1, intelligent digital moment of torsion rotating speed tester 4; The three-phase output end of said load inverter 6 is connected with the input end of load motor 5, and the output terminal of said load motor 5 is connected on the intelligent digital moment of torsion rotating speed tester 4, is connected with by measured motor 2 on the said intelligent digital moment of torsion rotating speed tester 4; Saidly be connected by the three-phase output end of the input end of measured motor 2 with tested frequency converter 1, the input end of said tested frequency converter 1 is connected with three-phase supply; The dc bus of said load inverter 6 is connected with the dc bus of tested frequency converter 1.
Said intelligent digital moment of torsion rotating speed tester 4 with all be connected with load motor 5 by measured motor 2 through universal joint 3.
The input end of said tested frequency converter 1 is in series with and is used to detect the three phase rectifier cell operation state of tested frequency converter 1 and monitors the inlet wire current detecting unit 7 whether it is in the balance duty.
The output terminal of said tested frequency converter 1 is in series with the three-phase inversion cell operation state that is used to detect tested frequency converter 1, monitor its whether outlet current detecting unit 8 of showing of phase shortage and calibration frequency converter output current.
The output terminal of said tested frequency converter 1 is parallel with the outlet voltage detection unit 9 that the output voltage of the output voltage that is used to detect tested frequency converter 1 and calibration frequency converter shows.
The output terminal of said tested frequency converter 1 is connected with the phase sequence relay 10 of the output phase sequence that is used to judge tested frequency converter 1 through open and shut valve 11.
Said load inverter 6 is provided with fastp-acting fuse 12 with the dc bus that is connected of tested frequency converter 1.
The technical conceive of the utility model; Tested frequency converter 1 drives by measured motor 2 and moves by certain power, is passed to load motor 3 by measured motor 2 output mechanical energies through rotor axis mechanical, and load motor 3 is operated in four-quadrant; Promptly be in generating state; After producing the fly-wheel diode rectification of electric energy, energy delivery is returned tested frequency converter 1, thereby form the load testing major loop of energy feedback through dc bus via the inversion unit of load inverter 6.
The intelligent digital moment of torsion rotating speed tester 4 of the utility model passes through two universal joints 3 and is connected by the rotor axis mechanical of measured motor 2 with load motor 5; Detection is by actual output torque, rotating speed and power in measured motor 2 rotating shafts; The actual torque of verification frequency converter, rotating speed control effect compared to traditional slip electric motor proving installation, have been widened the scope of load testing greatly; Make that the function of test platform is abundanter, thereby can more comprehensively assess the performance of tested frequency converter.
Fastp-acting fuse 12 on the utility model dc bus cuts off the connection of two frequency changer direct current bus when the excessive or tested frequency converter of feedback current is unusual on dc bus, protection load inverter 6; The phase sequence relay 10 of tested frequency converter 1; Through one continuous with tested frequency converter 1 output (another one is for being connected with tested frequency converter 1 output by measured motor 2 inputs) of an open and shut valve 11; Judge the output phase sequence of tested frequency converter 1, avoid the inconsistent overload that causes of two motor steerings.
During test, tested frequency converter 1 is placed on the test platform desktop, tested frequency converter 1 three-phase is imported with lead, three-phase output and dc bus in order respectively with test platform on corresponding binding post be connected.Open the battery main switch on the test platform, start tested frequency converter 1, adjust tested frequency converter 1 and be unloaded output 380 V, output voltage detects and after demonstration reaches 380 V open and shut valve 11 is allocated to the phase sequence test side.Like phase sequence detection alarm device alarm not; Tested frequency converter 1 output voltage is transferred to 0, and starting load frequency converter 6 and intelligent digital moment of torsion rotating speed tester 4 are allocated to motor output retaining with open and shut valve 11; Export test voltage and test rotating speed to by the tested frequency converter 1 of rotating speed regulating and controlling; Press rotating-speed tracking starting load frequency converter 6, and make the output power of tested frequency converter 1 meet the requirements of measured power, read output voltage simultaneously by 6 outputs of torque regulating and controlling load inverter; Output current and axle are gone up torque, data such as rotating speed; After reaching test request, regulating load frequency converter 6 exports zero to, regulates tested frequency converter 1 again and exports zero to, dials back open and shut valve 11 to neutral, closes load inverter 6 and tested frequency converter 1, closes the test platform general supply, and test is accomplished.
If front phase sequence detection alarm device sends buzzing and reports to the police; Then dial back open and shut valve 11 to neutral; Close tested frequency converter 1 output, close tested frequency converter 1, close the test platform general supply; Any two lines in the connecting line of tested frequency converter 1 three-phase output line and binding post are intersected transposing are connected, after finishing again from beginning executable operations.
The utility model carries out the set power termination test frequency converter except accomplishing existing slip electric motor load testing device; Also increased the inlet wire current detection, outlet current detecting, outlet voltage detecting; Test functions such as actual torque and rotating speed control effect detection; And, make it be able to more comprehensively detect the frequency converter performance because therefore load inverter parameter such as control load power has flexibly enriched the inverter load content measurement greatly.
Claims (7)
1. inverter load test platform with electric energy feedback; It is characterized in that: comprise load inverter, load motor, by measured motor, tested frequency converter, intelligent digital moment of torsion rotating speed tester; The three-phase output end of said load inverter is connected with the input end of load motor; The output terminal of said load motor is connected on the intelligent digital moment of torsion rotating speed tester; Be connected with by measured motor on the said intelligent digital moment of torsion rotating speed tester, saidly be connected with the three-phase output end of tested frequency converter by the input end of measured motor, the input end of said tested frequency converter is connected with three-phase supply; The dc bus of said load inverter is connected with the dc bus of tested frequency converter.
2. a kind of inverter load test platform with electric energy feedback according to claim 1 is characterized in that: said intelligent digital moment of torsion rotating speed tester with all be connected with load motor by measured motor through universal joint.
3. a kind of inverter load test platform with electric energy feedback according to claim 1 and 2 is characterized in that: the input end of said tested frequency converter is in series with and is used to detect the three phase rectifier cell operation state of tested frequency converter and monitors the inlet wire current detecting unit whether it is in the balance duty.
4. a kind of inverter load test platform with electric energy feedback according to claim 3 is characterized in that: the output terminal of said tested frequency converter is in series with the three-phase inversion cell operation state that is used to detect tested frequency converter, monitor its whether outlet current detecting unit of showing of phase shortage and calibration frequency converter output current.
5. a kind of inverter load test platform with electric energy feedback according to claim 4 is characterized in that: the output terminal of said tested frequency converter is parallel with the outlet voltage detection unit that the output voltage of the output voltage that is used to detect tested frequency converter and calibration frequency converter shows.
6. a kind of inverter load test platform with electric energy feedback according to claim 5 is characterized in that: the output terminal of said tested frequency converter is connected with the phase sequence relay of the output phase sequence that is used to judge tested frequency converter through open and shut valve.
7. a kind of inverter load test platform with electric energy feedback according to claim 6 is characterized in that: said load inverter is provided with fastp-acting fuse with the dc bus that is connected of tested frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205517088U CN202433454U (en) | 2011-12-27 | 2011-12-27 | Frequency converter load testing platform with electric energy feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205517088U CN202433454U (en) | 2011-12-27 | 2011-12-27 | Frequency converter load testing platform with electric energy feedback function |
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| CN202433454U true CN202433454U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205517088U Expired - Fee Related CN202433454U (en) | 2011-12-27 | 2011-12-27 | Frequency converter load testing platform with electric energy feedback function |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016452A (en) * | 2012-12-14 | 2013-04-03 | 中航力源液压股份有限公司 | Method and device for recovering and using energy produced in hydraulic motor load test |
| CN105067925A (en) * | 2015-07-29 | 2015-11-18 | 浙江易控电子科技有限公司 | Energy-recyclable frequency converter testing system, testing method and installation method |
| CN105116256A (en) * | 2015-08-27 | 2015-12-02 | 北京利德华福电气技术有限公司 | Novel high voltage frequency converter self-circulation test system and debugging method |
| CN105372537A (en) * | 2015-12-10 | 2016-03-02 | 中冶南方（武汉）自动化有限公司 | Labview/PDA-based frequency converter intelligent test platform |
| CN105699823A (en) * | 2016-03-29 | 2016-06-22 | 无锡市大元广盛电气股份有限公司 | Energy-saving frequency converter loading system and energy-saving frequency converter loading method |
| CN106199423A (en) * | 2016-06-28 | 2016-12-07 | 无锡新大力电机有限公司 | A kind of servomotor test system |
| CN106199422A (en) * | 2016-06-28 | 2016-12-07 | 无锡新大力电机有限公司 | A kind of servomotor test system based on energy conversion |
| CN106405413A (en) * | 2016-06-28 | 2017-02-15 | 无锡新大力电机有限公司 | Novel servo motor test system |
| CN108267690A (en) * | 2017-12-22 | 2018-07-10 | 苏州恒美电子科技股份有限公司 | The on-line measurement system of transmission mechanism |
| CN109031160A (en) * | 2018-10-08 | 2018-12-18 | 华高科技（苏州）有限公司 | A kind of ABB converter circuit plate load capacity detection method |
| CN109142928A (en) * | 2018-08-28 | 2019-01-04 | 惠州市金田科技有限公司 | A kind of frequency converter is to dragging test method |
| CN110618383A (en) * | 2019-10-25 | 2019-12-27 | 四川诚邦浩然测控技术有限公司 | Servo motor test bench and test system |
-
2011
- 2011-12-27 CN CN2011205517088U patent/CN202433454U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016452A (en) * | 2012-12-14 | 2013-04-03 | 中航力源液压股份有限公司 | Method and device for recovering and using energy produced in hydraulic motor load test |
| CN105067925A (en) * | 2015-07-29 | 2015-11-18 | 浙江易控电子科技有限公司 | Energy-recyclable frequency converter testing system, testing method and installation method |
| CN105116256B (en) * | 2015-08-27 | 2017-10-20 | 北京利德华福电气技术有限公司 | A kind of new high voltage converter self-loopa test system and its adjustment method |
| CN105116256A (en) * | 2015-08-27 | 2015-12-02 | 北京利德华福电气技术有限公司 | Novel high voltage frequency converter self-circulation test system and debugging method |
| CN105372537B (en) * | 2015-12-10 | 2019-02-19 | 中冶南方（武汉）自动化有限公司 | Frequency converter intelligence test platform based on Labview/PDA |
| CN105372537A (en) * | 2015-12-10 | 2016-03-02 | 中冶南方（武汉）自动化有限公司 | Labview/PDA-based frequency converter intelligent test platform |
| CN105699823A (en) * | 2016-03-29 | 2016-06-22 | 无锡市大元广盛电气股份有限公司 | Energy-saving frequency converter loading system and energy-saving frequency converter loading method |
| CN105699823B (en) * | 2016-03-29 | 2019-06-04 | 无锡市大元广盛电气股份有限公司 | A kind of energy-efficient frequency converter loading method |
| CN106199423A (en) * | 2016-06-28 | 2016-12-07 | 无锡新大力电机有限公司 | A kind of servomotor test system |
| CN106199422A (en) * | 2016-06-28 | 2016-12-07 | 无锡新大力电机有限公司 | A kind of servomotor test system based on energy conversion |
| CN106405413A (en) * | 2016-06-28 | 2017-02-15 | 无锡新大力电机有限公司 | Novel servo motor test system |
| CN108267690A (en) * | 2017-12-22 | 2018-07-10 | 苏州恒美电子科技股份有限公司 | The on-line measurement system of transmission mechanism |
| CN108267690B (en) * | 2017-12-22 | 2020-06-12 | 苏州恒美电子科技股份有限公司 | On-line measuring system of transmission mechanism |
| CN109142928A (en) * | 2018-08-28 | 2019-01-04 | 惠州市金田科技有限公司 | A kind of frequency converter is to dragging test method |
| CN109031160A (en) * | 2018-10-08 | 2018-12-18 | 华高科技（苏州）有限公司 | A kind of ABB converter circuit plate load capacity detection method |
| CN110618383A (en) * | 2019-10-25 | 2019-12-27 | 四川诚邦浩然测控技术有限公司 | Servo motor test bench and test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |