CN103995206A - Frequency converter testing device - Google Patents
Frequency converter testing device Download PDFInfo
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- CN103995206A CN103995206A CN201410238022.1A CN201410238022A CN103995206A CN 103995206 A CN103995206 A CN 103995206A CN 201410238022 A CN201410238022 A CN 201410238022A CN 103995206 A CN103995206 A CN 103995206A
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Abstract
The invention discloses a frequency converter testing device which comprises a power grid, an induction voltage regulator, a power supply cabinet, a towing motor, a load cabinet, a remote operation cabinet and a PLC, wherein the power grid is used for providing testing energy for the frequency converter testing device, the induction voltage regulator is used for regulating the output voltage of the power grid, the power supply cabinet is used for switching of circuits matched with the voltage obtained after the regulation of the induction voltage regulator, the towing motor is used for acquiring the loading moment, the load cabinet serves as the load of the towing motor, the remote operation cabinet is used for powered-on and powered-off control of the frequency converter testing device and achieving the regulation of testing voltage, selection of power supply testing lines and on-off control of a test load by controlling the induction voltage regulator, the power supply cabinet and the load cabinet in an isolating mode, and the PLC is used for controlling the remote operation cabinet. According to the frequency converter testing device, the loading test process is easy to control, testing efficiency is improved, and the ex-factory quality of the frequency converter is improved.
Description
Technical field
The invention belongs to frequency converter field tests, particularly a kind of frequency converter test device.
Background technology
AC frequency conversion transmission in modern age is through the development of decades, and it has become the leading of electric drive technology.In the middle of motor speed governing system, what serviceability was best, work efficiency is the highest is frequency conversion speed-adjusting system, thus, to the research of motor frequency change speed governing, be in the research of current electric drive system, to have actual application value most, work the most widely, frequency converter industry has very huge potentiality.
Along with mine-used frequency-converter is the applying of bargh, the quality of product self has also had higher requirement, and the loading test of product is also towards automatic control, economic and practical future development.Frequency converter, when dispatching from the factory, must carry out detailed performance test to it, can normally use guaranteeing after frequency converter dispatches from the factory.And loading test device in the past, need personnel's manual loading to control, this often causes the unnecessary wasting of resources, and it is low to load testing efficiency, and mine-used frequency-converter loaded test in the past needs a lot of operating personnel to carry out closely manual loading debugging, cause waste of human resource, operating personnel's personal safety to can not get good guarantee, the impaired coefficient of electrical equipment experimental data error higher and that loading test obtains is relatively large, the electric energy that consumes waste in loading test process is many, and experimentation cost increases.
Therefore, around meeting mine-used frequency-converter, load the requirement that robotization is controlled, loading test is economic and practical of testing, propose new mine-used frequency-converter and load testing scheme, carry out research and design that mine-used frequency-converter loads test automatically, realize mine-used frequency-converter and load the robotization that test is controlled, to improve automatic loading testing efficiency, make to load test process and easily control, the quality of dispatching from the factory that improves frequency converter is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of frequency converter test device, this frequency converter test device has improved testing efficiency, loads test process and easily controls, and improved the quality of dispatching from the factory of frequency converter.
For achieving the above object, the invention provides following technical scheme:
A frequency converter test device, comprising:
Electrical network, for providing the test energy to frequency converter test device;
Induction voltage regulator, for realizing the adjusting of described electrical network output voltage;
Powering shelf, for realizing the switching of the circuit matching with the rear voltage of described induction voltage regulator adjusting;
To dragging motor, for obtaining loading moment;
Load cabinet, for to described to dragging the load of motor;
Operated from a distance cabinet, for the switching electric control to frequency converter test device, by induction voltage regulator, described powering shelf and described load cabinet described in isolated controlling, realizes adjusting, the power supply selection of measurement circuit and the break-make of test load of test voltage;
PLC controller, for the control to described operated from a distance cabinet.
Preferably, be also provided with the first isolated controlling module between described operated from a distance cabinet and described induction voltage regulator, described the first isolated controlling module is for controlling the output voltage of described induction voltage regulator according to the instruction of described operated from a distance cabinet;
Between described operated from a distance cabinet and described powering shelf, be also provided with the first isolation feedback module and the second isolated controlling module, described the first isolation feedback module loads test voltage for feed back described powering shelf to described operated from a distance module, and described the second isolated controlling module is for realizing the switching of described powering shelf test circuit according to the instruction of described operated from a distance cabinet.
Preferably, between described operated from a distance cabinet and described load cabinet, be also provided with the 3rd isolated controlling module and the second isolation feedback module, the electrical equipment that described the 3rd isolated controlling module is isolated between described operated from a distance cabinet and described load cabinet is controlled, and described the second isolation feedback module is for realizing by the detection of frequency converter output voltage electric current.
Preferably, at described PLC controller and be describedly also provided with the 3rd isolation feedback module between motor to dragging, described the 3rd isolation feedback module for test described to dragging the rotational speed and torque of motor, and by described to dragging rotating speed and the torque of motor to feed back to described PLC controller.
Preferably, be also provided with four-quadrant frequency converter on frequency converter test device, described four-quadrant frequency converter will be for will, to dragging motor downlink working process, passing through the energy back of four-quadrant frequency converter rectifier generation to described electrical network.
Preferably, be also provided with E1B isolating switch on described electrical network, described E1B isolating switch is realized the protection to described electrical network.
Preferably, be also provided with E2N/E isolating switch on described powering shelf, described E2N/E isolating switch is realized the protection to the test circuit of powering in described powering shelf.
Preferably, be also provided with T5V isolating switch on described load cabinet, described T5V isolating switch is realized the protection to described load cabinet load testing circuit.
Preferably, described to dragging motor to comprise two identical phase asynchronous alternating current generators, described two phase asynchronous alternating current generators close and form with shaft mechanical misfortune.
Preferably, described operated from a distance is cashier's office in a shop also provided with:
Instrument, for showing each phase input/output voltage and the I/O electric current of frequency converter;
Running LED, for showing the state of test process.
Frequency converter test device provided by the present invention compared with prior art, due to frequency converter test device provided by the present invention comprise electrical network, induction voltage regulator, powering shelf, to dragging motor, load cabinet, operated from a distance cabinet, PLC controller, whole test process is realized and is automatically loaded test, whole test process is easily controlled, greatly carry and done testing efficiency, the safety and reliability that has guaranteed to load test, has also improved the quality that frequency converter dispatches from the factory; On proving installation provided by the invention, be provided with isolated controlling module and isolation feedback module, reduced testing staff and entered the experiment risk that high pressure loads test section; And on frequency converter test device, be also provided with four-quadrant frequency converter, four-quadrant frequency converter can pass through the energy back of four-quadrant frequency converter rectifier generation to described electrical network by dragging in motor downlink working process, has reduced the loss of the test energy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is embodiment mono-schematic diagram;
Fig. 2 is embodiment bis-schematic diagram.
Embodiment
Core of the present invention is to provide a kind of frequency converter test device, and this frequency converter test device loads test process and easily controls, and has improved testing efficiency, has improved the quality of dispatching from the factory of frequency converter.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
As shown in Figure 1, the frequency converter test device in the present embodiment comprises, a kind of frequency converter test device, comprising:
Electrical network 100, for providing the test energy to frequency converter test device;
Induction voltage regulator 200, for realizing the adjusting of electrical network 100 output voltages;
Powering shelf 300, for realizing the switching of the circuit matching with the rear voltage of induction voltage regulator 200 adjusting;
To dragging motor 600, for obtaining loading moment;
Load cabinet 500, for to dragging the load of motor 600;
Operated from a distance cabinet 700, for the switching electric control to frequency converter test device, by isolated controlling induction voltage regulator 200, powering shelf 300 and load cabinet 500, realizes adjusting, the power supply selection of measurement circuit and the break-make of test load of test voltage;
PLC controller 800, for the control to operated from a distance 700 cabinets.
Wherein, tested frequency converter 400 is arranged between powering shelf 300 and load cabinet 500.
In the present embodiment,
Electrical network 100 adopts three-phase alternating current electrical network, by three-phase 380V industry AC network, to whole device, provides the test energy.
What induction voltage regulator 200 adopted is adjustable output voltage transformer, and its structure is for the size of regulation and control motor change secondary coil, to reach the object to output voltage lift adjustment.
Powering shelf 300 is two vacuum contactors, forms two three-phase power lines, is respectively mains supply line and stand-by power supply circuit, and two master spare circuits can operate by operated from a distance cabinet 700 switching of supply line.
Load cabinet 500 is vacuum contactor, forms three-phase load circuit, and three are connected to dragging motor 600 loads.
To dragging motor 600 to close and form by two identical phase asynchronous alternating current generator machinery misfortunes, as tested frequency converter 400, load the load motor of test.Two motor coaxle machinery misfortunes are closed, and by a machine operation transmission, to dragging motor 600 runnings, obtain larger loading moment.
What PLC controller 800 adopted is that Siemens PLC C realizes robotization controlled loading, after PLC programming, can realize long-range to frequency converter Loading Control, state that can the whole closed loop test circuit of remote real-time monitoring, to circuit in test process and load abnormal, can make rapidly power supply and turn-off operation.
Because the present embodiment adopts above part parts, frequency converter is tested, the whole test process of frequency converter is easily controlled, and improved the efficiency of test.
Embodiment bis-
As shown in Figure 2, in the present embodiment, the difference of disclosed frequency converter test device and embodiment mono-is only, in the present embodiment, disclosed frequency converter test device also comprises following characteristics:
In the present embodiment, between induction voltage regulator 200 and operated from a distance cabinet 700, be also provided with the first isolated controlling module 201; Between powering shelf 300 and operated from a distance cabinet 700, be also provided with the first isolation feedback module 301 and the second isolated controlling module 302; Between load cabinet 500 and operated from a distance cabinet 700, be provided with the 3rd isolated controlling module 501 and the second isolation feedback module 502; To dragging, between motor 600 and PLC controller 800, be also provided with the 3rd isolation feedback module 601.
Wherein, the first isolated controlling module 201, the second isolated controlling module 302 and the 3rd isolated controlling module 501 are by the frame mode of two-stage electromagnetic formula relay, and the electrical equipment of having isolated between operated from a distance cabinet 700 and powering shelf 300, operated from a distance cabinet 700 and load cabinet 500 is controlled.Three-postion switch in operated from a distance cabinet 700 is controlled elementary underpower relay, and primary relay obtains power relay in electric rear control rear class, to realize, vacuum contactor in powering shelf 300, load cabinet 500 is opened and disconnected control.
Wherein, the first isolation feedback module 301, the second isolation feedback module 502 are to utilize Hall-type magnetic induction sensor to measure the magnetic field intensity of circuit in powering shelf 300 and load cabinet 500, indirectly measure its electrical specification, the detection that realizes frequency converter input, exports the electric current and voltage of each phase by electromagnetic induction.
In the present embodiment, on frequency converter test device, be also provided with four-quadrant frequency converter 900, four-quadrant frequency converter 900 is as the energy back part under motor downstream state, in conversion power supply process, there is the descending course of work in motor, in fact this process motor becomes generator, by the IGBT rectification of four-quadrant frequency converter, can, by the energy back producing to electrical network 100, thereby reach, save the object of testing electric energy.
In the present embodiment, in order to guarantee in the process of frequency converter test, the safety of whole process is provided with E1B type omnipotent breaker on electrical network 100, and this isolating switch can be realized the enforcement protection of the problems such as may occur electrical network and load under-voltage, overload and short circuit; On powering shelf 300, be provided with E2N/E type omnipotent breaker, this isolating switch can be realized the safeguard protection to power supply measurement circuit; On load cabinet 500, be provided with T5V type omnipotent breaker, this isolating switch also can be realized the safeguard protection to load testing circuit.
Operated from a distance cabinet 700 in the present embodiment loads and tests the control use that powers on/off mainly as frequency converter, and by isolated controlling induction voltage regulator 200, powering shelf 300 and load cabinet 500, realize the break-make of adjusting, the selection of power supply measurement circuit and the test load of test voltage.Hall element is measured after feedback, shows the input and output current/voltage of each phase of frequency converter by 12 LED charactron instrument.And be furnished with 9 running LEDs, and the inching button that 4 breaker open operations of 8 Long-distance Control close a floodgate, 2 inching button Long-distance Control induction voltage regulators, 1 scram button, 1 three-postion switch is for selecting the supply line of frequency converter to select.Crawl is controlled and mouthful to be controlled 15 I/O mouths with PLC and be connected, and by PLC, also can realize that corresponding separating brake closes a floodgate, boosts, reduced pressure operation.
When the frequency converter test device of the present embodiment is used, tested frequency converter 400 is inputted and is exported three-phase respectively and is connected to powering shelf 300 and load cabinet 500, after checking that circuit is correct, press PLC controller 800 starting switches, by operated from a distance cabinet 700, by the first isolated controlling module 201, controlled the output voltage of induction voltage regulator 200, now powering shelf 300 loads test voltage size by the first isolation feedback module 301 feedbacks.PLC controller 800 intelligence are adjusted to after suitable test voltage, control the confession electric contactor switch of operated from a distance cabinet 700, by the second isolated controlling module 302, selected after the supply line of powering shelf 300, the power supply closing switch of action operated from a distance cabinet 700, the E2N/E type omnipotent breaker in the second isolated controlling module 302 combined floodgate powering shelfs 300 is realized the input of tested frequency converter 400 is powered.Self check after tested frequency converter 400 starts, if go wrong, powering shelf 300 can disconnect test power supply automatically, to protect frequency converter and measurement circuit.After tested frequency converter 400 self checks, PLC controller 800, by the T5V type omnipotent breaker in operated from a distance cabinet 700 combined floodgate load cabinets 500, is realized tested frequency converter 400 run with loads.If band carries and goes wrong, the automatic disconnecting consumers circuit of load cabinet 500 meeting, to protect frequency converter and load motor.To dragging motor 600 by the 3rd isolation feedback module 601, feedback motor operating state is to PLC controller 800, if having extremely, PLC controller 800 is controlled operated from a distance cabinet 700, realizes measurement circuit and disconnects.To dragging motor 600 sides three four-quadrant frequency converter 900 that is connected, when motor downlink working, by after electric energy IGBT rectification, through filter reactor, feed back to electrical network 100.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a frequency converter test device, is characterized in that, comprising:
Electrical network, for providing the test energy to frequency converter test device;
Induction voltage regulator, for realizing the adjusting of described electrical network output voltage;
Powering shelf, for realizing the switching of the circuit matching with the rear voltage of described induction voltage regulator adjusting;
To dragging motor, for obtaining loading moment;
Load cabinet, for to described to dragging the load of motor;
Operated from a distance cabinet, for the switching electric control to frequency converter test device, by induction voltage regulator, described powering shelf and described load cabinet described in isolated controlling, realizes adjusting, the power supply selection of measurement circuit and the break-make of test load of test voltage;
PLC controller, for the control to described operated from a distance cabinet.
2. frequency converter test device according to claim 1, is characterized in that,
Between described operated from a distance cabinet and described induction voltage regulator, be also provided with the first isolated controlling module, described the first isolated controlling module is for controlling the output voltage of described induction voltage regulator according to the instruction of described operated from a distance cabinet;
Between described operated from a distance cabinet and described powering shelf, be also provided with the first isolation feedback module and the second isolated controlling module, described the first isolation feedback module loads test voltage for feed back described powering shelf to described operated from a distance module, and described the second isolated controlling module is for realizing the switching of described powering shelf test circuit according to the instruction of described operated from a distance cabinet.
3. frequency converter test device according to claim 2, is characterized in that,
Between described operated from a distance cabinet and described load cabinet, be also provided with the 3rd isolated controlling module and the second isolation feedback module, the electrical equipment that described the 3rd isolated controlling module is isolated between described operated from a distance cabinet and described load cabinet is controlled, and described the second isolation feedback module is for realizing by the detection of frequency converter output voltage electric current.
4. frequency converter test device according to claim 3, is characterized in that,
At described PLC controller and be describedly also provided with the 3rd isolation feedback module between motor to dragging, described the 3rd isolation feedback module is described to dragging the rotational speed and torque of motor for testing, and by described to dragging rotating speed and the torque of motor to feed back to described PLC controller.
5. according to the frequency converter test device described in claim 1～4 any one, it is characterized in that, on frequency converter test device, be also provided with four-quadrant frequency converter, described four-quadrant frequency converter will be for will, to dragging motor downlink working process, passing through the energy back of four-quadrant frequency converter rectifier generation to described electrical network.
6. frequency converter test device according to claim 5, is characterized in that, is also provided with E1B isolating switch on described electrical network, and described E1B isolating switch is realized the protection to described electrical network.
7. frequency converter test device according to claim 6, is characterized in that, is also provided with E2N/E isolating switch on described powering shelf, and described E2N/E isolating switch is realized the protection to the test circuit of powering in described powering shelf.
8. frequency converter test device according to claim 7, is characterized in that, is also provided with T5V isolating switch on described load cabinet, and described T5V isolating switch is realized the protection to described load cabinet load testing circuit.
9. frequency converter test device according to claim 8, is characterized in that, described to dragging motor to comprise two identical phase asynchronous alternating current generators, and described two phase asynchronous alternating current generators close and form with shaft mechanical misfortune.
10. frequency converter test device according to claim 9, is characterized in that, described operated from a distance is cashier's office in a shop also provided with:
Instrument, for showing each phase input/output voltage and the I/O electric current of frequency converter;
Running LED, for showing the state of test process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238022.1A CN103995206A (en) | 2014-05-30 | 2014-05-30 | Frequency converter testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238022.1A CN103995206A (en) | 2014-05-30 | 2014-05-30 | Frequency converter testing device |
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| CN103995206A true CN103995206A (en) | 2014-08-20 |
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| CN201410238022.1A Pending CN103995206A (en) | 2014-05-30 | 2014-05-30 | Frequency converter testing device |
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Cited By (6)
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| CN104090191A (en) * | 2014-07-23 | 2014-10-08 | 江苏三恒科技股份有限公司 | Loading testing device and method used for frequency converter |
| CN104375030A (en) * | 2014-11-11 | 2015-02-25 | 上海大屯能源股份有限公司 | Frequency converter loading test device for mining coal cutter |
| CN106291197A (en) * | 2016-08-31 | 2017-01-04 | 浙江佳乐科仪股份有限公司 | A kind of big-power transducer factory testing equipment |
| CN108345262A (en) * | 2017-12-13 | 2018-07-31 | 中冶南方（武汉）自动化有限公司 | A kind of system and method for electric machine controller test distribution |
| 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 |
| CN109739172A (en) * | 2019-01-03 | 2019-05-10 | 苏州巨联电气有限公司 | A kind of frequency converter checking platform |
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Application publication date: 20140820 |