CN202066930U - Test system for loading of frequency converter - Google Patents
Test system for loading of frequency converter Download PDFInfo
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- CN202066930U CN202066930U CN2011201804647U CN201120180464U CN202066930U CN 202066930 U CN202066930 U CN 202066930U CN 2011201804647 U CN2011201804647 U CN 2011201804647U CN 201120180464 U CN201120180464 U CN 201120180464U CN 202066930 U CN202066930 U CN 202066930U
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- frequency converter
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- loading
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Abstract
The utility model provides a test system for loading of a frequency converter. The test system includes a three phase alternating power grid, a to-be-tested frequency converter, a filter, an isolation transformer, a first reactor, a second active front-end, an impulse feedback controller and a second reactor, wherein the three phase alternating power grid, the to-be-tested frequency converter, the filter, the isolation transformer, the first reactor, the second active front-end, the impulse feedback controller and the second reactor are connected successively to form a closed-loop control. The test system also includes a management module which is connected to the to-be-tested frequency converter, the second active front-end and the impulse feedback controller. The test system for loading of the frequency converter in the utility model has an advantage of high recovery efficiency of the electric energy of the system. Thus, the actual consumption volume of the electric energy supplied by the power system is reduced substantially. The aim of loading and testing the to-be-tested device is realized and the electric energy is also saved. The test system for loading of the frequency converter in the utility model has great practical value.
Description
Technical field
The utility model relates to a kind of inverter load test macro, particularly about a kind of inverter load test macro of recoverable energy.
Background technology
Frequency converter is to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency.Frequency converter mainly is made up of rectification (AC-DC), filtering, inversion (direct current becomes interchange), brake unit, driver element, detecting unit microprocessing unit etc.
Accompanying drawing 1 is the structural representation of a kind of inverter load test macro of prior art, comprises the three-phase alternating current electrical network 11, frequency converter to be measured 12, wave filter 13, isolating transformer 14, first reactor 15, second active front end (AFE) 16, first active front end 17 and second reactor 18 that are in turn connected to form closed-loop control.RST(uvw) refer to three phases of three-phase alternating current, DC+ and DC-refer to the positive pole and the negative pole of direct current.
Second active front end (AFE) 16 is power factor corrector (PFC), is mainly used to characterize the utilization ratio of electronic product to electric energy.Power factor is high more, illustrates that the utilization ratio of electric energy is high more.
Power supply adopts traditional bridge rectifier, capacitor filter can make the AC input current produce serious wave form distortion, inject a large amount of higher hamonic waves to electrical network, therefore the power factor of net side is not high, only has about 0.6, and electrical network and other electrical equipment are caused serious harmonic pollution and interference.As far back as the beginning of the eighties, people have caused concern to the harm that higher harmonic current caused that this class device produces.Nineteen eighty-two, International Electrotechnical Commission has worked out the standard (specification revision afterwards is IEC1000-3-2) of IEC55-2 restriction higher hamonic wave, impels numerous Power Electronic Technique workers to begin harmonic and power factor correction (PFC) Study on Technology.Introduce pfc circuit in the electronic power supply product, just can improve utilization ratio greatly electric energy.
PFC has two kinds, and a kind of is that passive PFC(also claims passive PFC), a kind of is also symmetrical active PFC of active PFC().Passive PFC adopts generally the inductance compensation method to make to exchange that phase differential reduces to improve power factor between the fundamental current of input and the voltage, but the power factor of passive PFC is not very high, can only reach 0.7 ~ 0.8; Active PFC is made up of inductance capacitance and electronic devices and components, and volume is little, can reach very high power factor, but cost to exceed passive PFC some.
The principle of work of above-mentioned inverter load test macro is roughly as follows, second active front end 16 extracts electric current (effect of loading) by wave filter 13, isolating transformer 14 and first reactor 15 from frequency converter to be tested, voltage between DC terminal DC+ and the DC-is raise, and first active front end 17 will be controlled the rising of DC voltage and give electrical network with electric energy by second reactor, 18 synchroballistics.
The shortcoming of prior art is that the inverter load test macro needs a plurality of motors could realize extracting the compensation of electric energy, and energy consumption is higher.
The utility model content
Technical problem to be solved in the utility model is that a kind of inverter load test macro of recoverable energy is provided.
In order to address the above problem, the utility model provides a kind of inverter load test macro, comprise the three-phase alternating current electrical network that is in turn connected to form closed-loop control, frequency converter to be measured, wave filter, isolating transformer, first reactor, second active front end, pulse feedback controller, second reactor, and comprise that further administration module, administration module are connected to frequency converter to be measured, second active front end and pulse feedback controller.
Advantage of the present utility model is, adopt administration module that frequency converter to be measured is sampled, and control the duty of second active front end and pulse feedback controller with this, the electric energy organic efficiency height of system, mean that the electric energy that the actual consumption electric system is supplied with reduces in a large number, reach Devices to test and load test purpose, realized the saving of electric energy simultaneously, great practical value is arranged.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of inverter load test macro of prior art.
Accompanying drawing 2 is structural representations of the described inverter load test macro of the utility model embodiment.
Embodiment
The embodiment of a kind of inverter load test macro that the utility model is provided below in conjunction with accompanying drawing elaborates.
Accompanying drawing 2 is structural representations of the described inverter load test macro of this embodiment, comprises the three-phase alternating current electrical network 11, frequency converter to be measured 12, wave filter 13, isolating transformer 14, first reactor 15, second active front end 16, pulse feedback controller 21 and second reactor 18 that are in turn connected to form closed-loop control.And comprise that further administration module 20, administration module 20 are connected to frequency converter 12 to be measured, second active front end 16 and pulse feedback controller 21.RST(uvw) refer to three phases of three-phase alternating current, DC+ and DC-refer to the positive pole and the negative pole of direct current.
Compare with accompanying drawing 1, the structure of this embodiment shown in the accompanying drawing 2 adopts pulse feedback controller 21 to replace first active front end, and has added administration module 20.Administration module 20 is connected to frequency converter 12 to be measured, second active front end 16 and pulse feedback controller 21, administration module 20 is judged required load size according to the type of frequency converter 12 to be measured, and send to second active front end, 16 loading commands in emulation amount (or communication) mode, second active front end 16 will be controlled self input current (approximating the frequency converter output current) to setting electric current, and this moment, the frequency converter output work was because of near 100%.Pulse feedback controller 21 detect dc bus voltages be higher than after the setting value automatically with energy with line voltage with frequently, synchronous current feedback is to three-phase alternating current electrical network 11.Described administration module 20 for example can be a computing machine.
According to circulating with upper type, frequency converter promptly reaches the burn-in test purpose, and electric energy is also just saved to greatest extent.This test macro can be adapted to the motor driver of different electric pressures (440V, 220V, 110V etc.), and the organic efficiency of electric energy can reach more than 80%, and the quality of power supply of feedback grid is higher.
Actual test shows, the electric energy organic efficiency height of said system means that the electric energy that the actual consumption electric system is supplied with reduces in a large number, there is the electric energy more than 80% to be recycled, reach Devices to test and load test purpose, realized the saving of electric energy simultaneously, great practical value is arranged.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. inverter load test macro, it is characterized in that, comprise the three-phase alternating current electrical network that is in turn connected to form closed-loop control, frequency converter to be measured, wave filter, isolating transformer, first reactor, second active front end, pulse feedback controller, second reactor, and comprise that further administration module, administration module are connected to frequency converter to be measured, second active front end and pulse feedback controller.
2. inverter load test macro according to claim 1 is characterized in that, described administration module is a computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201804647U CN202066930U (en) | 2011-05-31 | 2011-05-31 | Test system for loading of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201804647U CN202066930U (en) | 2011-05-31 | 2011-05-31 | Test system for loading of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066930U true CN202066930U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201804647U Expired - Fee Related CN202066930U (en) | 2011-05-31 | 2011-05-31 | Test system for loading of frequency converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202066930U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539966A (en) * | 2011-12-23 | 2012-07-04 | 台达电子企业管理（上海）有限公司 | Testing system for loads of frequency converters |
| CN102570501A (en) * | 2011-12-28 | 2012-07-11 | 台达电子企业管理（上海）有限公司 | Product quality aging testing system |
| CN105699817A (en) * | 2016-03-09 | 2016-06-22 | 武汉港迪电气传动技术有限公司 | Energy-saving type frequency converter load testing system and method |
| CN106226632A (en) * | 2016-09-06 | 2016-12-14 | 东莞市冠达自动化设备有限公司 | A kind of motor variable-frequency driver aging testing system and method for testing thereof |
| CN108181526A (en) * | 2017-12-27 | 2018-06-19 | 上海辛格林纳新时达电机有限公司 | Test system for loading of frequency converter and inverter load test method |
-
2011
- 2011-05-31 CN CN2011201804647U patent/CN202066930U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539966A (en) * | 2011-12-23 | 2012-07-04 | 台达电子企业管理（上海）有限公司 | Testing system for loads of frequency converters |
| CN102570501A (en) * | 2011-12-28 | 2012-07-11 | 台达电子企业管理（上海）有限公司 | Product quality aging testing system |
| CN105699817A (en) * | 2016-03-09 | 2016-06-22 | 武汉港迪电气传动技术有限公司 | Energy-saving type frequency converter load testing system and method |
| CN106226632A (en) * | 2016-09-06 | 2016-12-14 | 东莞市冠达自动化设备有限公司 | A kind of motor variable-frequency driver aging testing system and method for testing thereof |
| CN106226632B (en) * | 2016-09-06 | 2023-10-20 | 东莞市冠达自动化设备有限公司 | Aging test system and method for variable frequency drive of motor |
| CN108181526A (en) * | 2017-12-27 | 2018-06-19 | 上海辛格林纳新时达电机有限公司 | Test system for loading of frequency converter and inverter load test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGDA ELECTRONIC COMPONENTS (WUJIANG) CO., LTD. Free format text: FORMER OWNER: ZHONGDA PHOTOELECTRIC INDUSTRIAL (WUJIANG) CO., LTD. Effective date: 20150907 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150907 Address after: 215200, 1688 East Road, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee after: Zhongda Electronic Components (Wujiang) Co., Ltd. Address before: 215200, 1688 East Road, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee before: Zhongda Photoelectric Industry (Wujiang) Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20200531 |