CN102116850B - Device and method for testing rectifier - Google Patents
Device and method for testing rectifier Download PDFInfo
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- CN102116850B CN102116850B CN 201010601520 CN201010601520A CN102116850B CN 102116850 B CN102116850 B CN 102116850B CN 201010601520 CN201010601520 CN 201010601520 CN 201010601520 A CN201010601520 A CN 201010601520A CN 102116850 B CN102116850 B CN 102116850B
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Abstract
The invention discloses a device and a method for testing a rectifier. The device for testing the rectifier comprises a transformer and a load module, wherein an output end of the transformer is connected with an alternating current voltage input end of the rectifier to be tested; the load module is an inverter; a direct current voltage input end of the inverter is connected with a direct current voltage output end of the rectifier to be tested; and an alternating current voltage output end of the inverter and the output end of the transformer are connected in parallel to the alternating current voltage input end of the rectifier to be tested. The method for testing the rectifier comprises the following steps of: starting the rectifier to be tested which is connected with the transformer and converting alternating current voltage output by the transformer into direct current voltage to be output; and starting the inverter which is connected with the rectifier to be tested and adjusting output current of the inverter. Through the device and the method for testing the rectifier, requirements on the transformer and power network capacity can be reduced, energy waste can be reduced, and testing cost can be saved.
Description
Technical field
The present invention relates to a kind of rectifier detection technique, relate in particular to a kind of rectifier test unit and method.
Background technology
Along with the fast development of Power Electronic Technique, rectifier is widely used in the every field of industry as the pith of electric supply installation.High-power four-quadrant rectifier is a kind of common rectifier, mainly is applicable to the large power power electronic appliance field.The major function of high-power four-quadrant rectifier is that the single-phase or three-phase alternating voltage that will input is converted to direct voltage output, powers to consumer.
Take the locomotive power supply technology as example, DC600V train power supply device, main convertor and AuCT etc. all are the train power supply devices of commonly using.The power of train power supply device and AuCT is generally 400～600kW, the power of main convertor is generally 1200～1600kW, high-power four-quadrant rectifier is as the pith of electric supply installation, and its performance has a great impact the overall performance of electric supply installation.So performance and product quality in order to guarantee high-power four-quadrant rectifier, the front needs that dispatch from the factory carry out a large amount of performance tests and full load test.The high-power four-quadrant rectifier pilot production method of prior art is generally and drives the purpose that reaches test high-power four-quadrant rectifier Performance And Reliability with resistive load.
But in the actual tests process, there is following defective in the high-power four-quadrant rectifier pilot production method of prior art:
One, because with resistive load power consumption, in process of the test, energy not only all consumes on resistive load, but also will cause energy dissipation serious for provide cooling system to solve heat dissipation problem with resistive load, and experimentation cost increases.
Two, need the capacity of electrical network enough large, for some medium-sized and small enterprises, in the situation that net capacity is limited, can't carry out the full load test to equipment.
Three, need powerful transformer as AC converter, take DC600 V train power supply device test system as example, need a power frequency 600kW transformer, the volume of this transformer is very large, cost is also very high, cause pilot system bulky, floor area is large, and the testing equipment input cost is high.
Four, for single-phase input high-power four-quadrant rectifier, in using three-phase supply, one be mutually the high-power four-quadrant rectifier power supply, will cause that three-phase output is uneven, make the power-supply system tripping operation, test can't be carried out.
Summary of the invention
The invention provides a kind of rectifier test unit and method, to reduce even to avoid energy dissipation in the rectifier checkout procedure, reduce energy resource consumption.
The invention provides a kind of rectifier test unit, comprise transformer, the output terminal of described transformer is connected with the ac voltage input of rectifier to be tested, also comprises:
Load blocks, described load blocks is inverter, the dc voltage input end of described inverter is connected with the dc voltage output end of described rectifier to be tested, and the ac voltage output of described inverter and the output terminal of described transformer are connected in parallel to the ac voltage input of described rectifier to be tested.
Aforesaid rectifier test unit, the gauge tap of described rectifier to be tested is the full-control type transistor, adopting another gauge tap is that the transistorized rectifier of full-control type is as described inverter, as load, the described dc voltage output end that is used as the rectifier of load is the dc voltage input end of described inverter, and the described ac voltage input that is used as the rectifier of load is the ac voltage output of described inverter.
Aforesaid rectifier test unit, wherein, described inverter also comprises control device, described control device comprises adjustment unit and pulse signal generation unit;
Described adjustment unit is connected with ac voltage output with the dc voltage input end of described inverter respectively, input voltage, output voltage and output current are sampled, output current amplitude preset value according to sampled result and the generation of current amplitude reference unit produces the output current control signal, and described output current control signal is sent to described pulse signal generation unit;
Described pulse signal generation unit produces the control signal of the described gauge tap of control according to described current controling signal, with phase place and the amplitude of adjusting described output current.Aforesaid rectifier test unit, wherein, described rectifier to be tested is single-phase rectifier or three phase rectifier.
The invention provides a kind of rectifier test method, adopt rectifier test unit of the present invention, comprising:
Start the rectifier to be tested that is connected with transformer, the alternating voltage that described transformer is exported converts direct voltage output to;
The inverter that startup links to each other with described rectifier to be tested, adjust the output current of described inverter, wherein, described inverter is with described converting direct-current voltage into alternating-current voltage and feed back to the output terminal of described transformer, is connected in parallel to the ac voltage input of described rectifier to be tested with the output terminal of described transformer.
Comprise before the aforesaid rectifier test method, described startup and inverter that described rectifier to be tested links to each other: monitor the output voltage of described rectifier to be tested, when described output voltage reaches rated voltage, trigger the unlatching of described inverter.
Aforesaid rectifier test method, wherein, described inverter is the transistorized rectifier of full-control type for another gauge tap, as load, it is characterized in that, the output current of the described inverter of described adjustment comprises:
Input voltage, output voltage and output current to described inverter are sampled, and according to sampled result and output current amplitude preset value, produce the control signal of the described gauge tap of control, with phase place and the amplitude of the output current of adjusting described inverter.
Aforesaid rectifier test method, wherein, phase place and the amplitude of adjusting the output current of described inverter are specially: adjust the single spin-echo of the output voltage of the phase place of output current of described inverter and described inverter, the amplitude of adjusting the output current of described inverter equates with described output current amplitude preset value.
As shown from the above technical solution, rectifier test unit provided by the invention and method, by the performance that adopts inverter to test rectifier to be tested as test load, the electric energy of rectifier to be tested output is fed back to again the input end of rectifier to be tested after by the conversion of inverter, test energy to rectifier to be tested replenishes, reduced the demand to transformer efficiency, and can realize the full load test, reduce even avoided energy dissipation in the rectifier process of the test, not only reduce energy resource consumption, also saved experimentation cost.
Description of drawings
The structural representation of the rectifier test unit that Fig. 1 provides for the embodiment of the invention one;
The circuit theory diagrams of a kind of rectification test unit that Fig. 2 provides for the embodiment of the invention two;
The circuit theory diagrams of the another kind of rectifier test unit that Fig. 3 provides for the embodiment of the invention three;
The process flow diagram of the rectifier test method that Fig. 4 provides for the embodiment of the invention four.
Reference numeral:
The 101-transformer; The rectifier that 102-is to be tested; The 103-inverter;
The 104-control device; The 105-adjustment unit; 106-pulse signal generation unit;
The D-diode; The L-inductance; 107-current amplitude reference unit;
The S-gauge tap; C-electric capacity; P1-the first control signal;
P2-the second control signal; P3-the 3rd control signal; P4-the 4th control signal.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, below in conjunction with the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.Need to prove, in accompanying drawing or instructions, similar or identical element all uses identical Reference numeral.
Embodiment one
The structural representation of the rectifier test unit that Fig. 1 provides for the embodiment of the invention one, as shown in Figure 1, the rectifier test unit comprises transformer 101 and load blocks, the output terminal of transformer 101 is connected with the ac voltage input of rectifier to be tested 102, load blocks is inverter 103, the dc voltage input end of inverter 103 is connected with the dc voltage output end of rectifier to be tested 102, and the output terminal of the ac voltage output of inverter 103 and transformer 101 is connected in parallel to the ac voltage input of rectifier to be tested 102.
In concrete process of the test, rectifier 102 to be tested exports inverter 103 to after the alternating voltage of transformer 101 outputs is converted to DC voltage, and inverter 103 feeds back to converting direct-current voltage into alternating-current voltage the alternating voltage import and export end of rectifier to be tested 102 again.Inverter 103 both as the load of rectifier to be tested 102 to test the property indices of rectifier to be tested 102, the input end that again electric energy is fed back to rectifier to be tested 102 provides energy for it.When rectifier to be tested 102 is powerful rectifier, as being used for the rectifier of DC600V train power supply device test system, because the compensation of the test institute energy requirement of 103 pairs of rectifiers to be tested 102 of inverter, can adopt capacity and all little transformer of volume in the process of the test, correspondingly also reduced the capacity requirement to electrical network, avoid the energy dissipation in process of the test, reduced energy resource consumption, saved experimentation cost.
Embodiment two
In the present embodiment, it is that the transistorized rectifier of full-control type is as inverter that the rectifier test unit adopts another gauge tap, as load, the dc voltage output end that is used as the rectifier of load is the dc voltage input end of inverter, and the ac voltage input that is used as the rectifier of load is the ac voltage output of inverter.If the gauge tap in the rectifier to be tested is the full-control type transistor, rectifier that then can another is to be tested as inverter as the load of rectifier to be tested to test its performance, draw materials conveniently, also can reduce the testing equipment cost.
The circuit theory diagrams of a kind of rectification test unit that Fig. 2 provides for the embodiment of the invention two, the rectifier to be tested in this rectification test unit is the single-phase high-power four-quadrant rectifier, but the present invention is not limited to this.As shown in Figure 2, high-power four-quadrant rectifier to be tested has adopted the H bridge construction with four gauge tap S, diode D of each gauge tap S inverse parallel, usually gauge tap S is insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, referred to as IGBT), inductance L is mainly used in energy storage, and rectifier bridge is mainly used in alternating voltage is carried out full-wave rectification, and the voltage after the rectification is again by output dc voltage after the capacitor C filtering.Control respectively conducting or the shutoff of four gauge tap S by high-frequency pulse signal, high-frequency pulse signal is generally pulse-length modulation (Pulse WidthModulation, referred to as PWM) signal, produced by the control signal generation module, the major control core of control signal generation module is specifically as follows motor special integrated circuit DSPic30f6010A, usually can synthesize pwm signal by selecting different control strategies, generally realize by software.With the dc voltage output end of this high-power four-quadrant rectifier as dc voltage input end, ac voltage input is during as ac voltage output, high-power four-quadrant rectifier has just played the effect of inverter, namely can be with the converting direct-current voltage into alternating-current voltage output of input.So, can adopt another high-power four-quadrant rectifier to test the performance of high-power four-quadrant rectifier to be tested as the load of rectifier test unit.
In the present embodiment, inverter can also comprise control device 104, and control device 104 comprises adjustment unit 105 and pulse signal generation unit 106.Generate inverter output current control signal by adjustment unit 105, and the output current control signal sent to pulse generate unit 106, pulse generate unit 106 produces the first control signal P1, the second control signal P2, the 3rd control signal P3 and the 4th control signal P4 according to the output current control signal and controls respectively four gauge tap S.Adjustment unit 105 is used for phase place and the amplitude of the output current of adjustment inverter.
Preferably, make the phase place of output current and the single spin-echo of output voltage by the duty of adjusting four gauge tap, be that power factor is about-1, the inverter output power feeds back to the input end of rectifier to be tested fully, the energy that power input provides only, electronic component heating electric for whole test loop reaches the loss that auxiliary electricity consumption produces, and has effectively avoided the waste of the energy.Can be to equate with output current amplitude preset value the range-adjusting of output current, namely can simulate the performance of the rectifier to be tested 102 under the different loads.
In the present embodiment, rectifier 102 to be tested is single-phase rectifier, also can be three phase rectifier in the practical application, when rectifier to be tested 102 is single-phase rectifier, inverter 103 as load also is single-phase inverter accordingly, transformer 101 can be single transformer, also can use one in the three-phase transformer as the feedway of the energy.When rectifier to be tested 102 was three phase rectifier, the inverter 103 as load also was three-phase inverter accordingly, and transformer 101 is three-phase transformer.
Embodiment three
The circuit theory diagrams of the another kind of rectifier test unit that Fig. 3 provides for the embodiment of the invention three, rectifier to be tested is the Three-phase high-power four-quadrant rectifier in this rectification test unit, but the present invention is not as limit.As shown in Figure 3, transformer 101 is three-phase transformer in this rectifier test unit, and three-phase transformer, three phase rectifier and the annexation between the three-phase inverter to be tested are similar to embodiment shown in Figure 2, and this repeats no more.
Embodiment four
The process flow diagram of the rectifier test method that Fig. 4 provides for the embodiment of the invention four, the rectifier test unit that the method can utilize any embodiment of the present invention to provide is realized, but is not limited to this.As shown in Figure 4, this rectifier test method comprises:
The rectifier to be tested that step 410, startup are connected with transformer, the alternating voltage that transformer is exported converts direct voltage output to;
The inverter that step 420, startup link to each other with rectifier to be tested, adjust the output current of inverter, wherein, inverter is with converting direct-current voltage into alternating-current voltage and feed back to the output terminal of transformer, is connected in parallel to the ac voltage input of rectifier to be tested with the output terminal of transformer.
This rectifier test method, by inverter is tested its performance as the load of rectifier to be tested, convert again the DC voltage of rectifier output to be tested to input end that alternating voltage feeds back to rectifier to be tested, be its makeup energy, to reduce the demand to transformer capacity and net capacity, reduced volume and the floor area of pilot system.And do not need to add heat abstractor, reduced equipment cost.Owing to having reduced the requirement to electrical network, even the little electrical network of capacity also can be realized the full load test of jumbo rectifier, further having improved test effect.
In the present embodiment, start the inverter that links to each other with rectifier to be tested and can comprise before: monitor the output voltage of rectifier to be tested, when output voltage reaches rated voltage, trigger the unlatching of inverter.After rectifier running to be tested is stable, restart inverter, can rectifier to be tested be played a protective role, also more be conducive to improve the test accuracy of rectifier test unit.
In the present embodiment, inverter can be the transistorized rectifier of full-control type for another gauge tap, as load, the output current of adjusting inverter comprises that input voltage, output voltage and output current to inverter sample, according to sampled result and output current amplitude preset value, produce the control signal of control gauge tap, with phase place and the amplitude of the output current of adjusting inverter.Concrete, can be to equate with output current amplitude preset value the range-adjusting of output current, by the adjustment of the output current amplitude of inverter being simulated the performance test of rectifier to be tested in the different loads situation, improve test effect.By the adjustment to the phase place of the output current of inverter, can adjust the output power factor of inverter, reduce reactive power, put forward high-octane utilization factor.Preferably, the phase place of adjusting the output current of inverter is specially the single spin-echo of the output voltage of the phase place of the output current of adjusting inverter and inverter.When the single spin-echo of the phase place of inverter output current and output voltage, power factor is about-1, the inverter output power feeds back to the input end of rectifier to be tested fully, the energy that power input provides only, electronic component heating electric for whole test loop reaches the loss that auxiliary electricity consumption produces, and effectively reduces energy dissipation.
Rectifier test unit provided by the invention and method, by inverter being replaced testing as the load of rectifier to be tested with resistive load the properties of rectifier to be tested, feed back to the input end of rectifier to be tested as energy supply after the conversion of DC voltage by inverter of rectifier output to be tested, reduced the demand to transformer capacity, and need not set up heat abstractor, reduce volume and the floor area of pilot system, also further saved the cost of testing equipment.Correspondingly the demand of electrical network also reduced, though very the electrical network of low capacity also can be used as the heavy-duty rectifier Power supply to realize the full load test, improved the effect of test.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a rectifier test unit comprises transformer, and the output terminal of described transformer is connected with the ac voltage input of rectifier to be tested, it is characterized in that, also comprises:
Load blocks, described load blocks is inverter, the dc voltage input end of described inverter is connected with the dc voltage output end of described rectifier to be tested, and the ac voltage output of described inverter and the output terminal of described transformer are connected in parallel to the ac voltage input of described rectifier to be tested;
The gauge tap of described rectifier to be tested is the full-control type transistor, adopting another gauge tap is that the transistorized rectifier of full-control type is as described inverter, as load, the described dc voltage output end that is used as the rectifier of load is the dc voltage input end of described inverter, and the described ac voltage input that is used as the rectifier of load is the ac voltage output of described inverter;
Described inverter also comprises control device, and described control device comprises adjustment unit and pulse signal generation unit;
Described adjustment unit is connected with ac voltage output with the dc voltage input end of described inverter respectively, input voltage, output voltage and output current are sampled, output current amplitude preset value according to sampled result and the generation of current amplitude reference unit produces the output current control signal, and described output current control signal is sent to described pulse signal generation unit;
Described pulse signal generation unit produces the control signal of the described gauge tap of control according to described current controling signal, with phase place and the amplitude of adjusting described output current.
2. rectifier test unit according to claim 1, it is characterized in that: described rectifier to be tested is single-phase rectifier or three phase rectifier.
3. a rectifier test method is characterized in that, right to use requires 1 described rectifier test unit, and described rectifier test method comprises:
Start the rectifier to be tested that is connected with transformer, the alternating voltage that described transformer is exported converts direct voltage output to;
Monitor the output voltage of described rectifier to be tested, when described output voltage reaches rated voltage, trigger the unlatching of inverter;
The described inverter that startup links to each other with described rectifier to be tested, adjust the output current of described inverter, wherein, described inverter is with described converting direct-current voltage into alternating-current voltage and feed back to the output terminal of described transformer, is connected in parallel to the ac voltage input of described rectifier to be tested with the output terminal of described transformer;
Described inverter is the transistorized rectifier of full-control type for another gauge tap, as load, the output current of the described inverter of described adjustment comprises: input voltage, output voltage and output current to described inverter are sampled, according to sampled result and output current amplitude preset value, produce the control signal of the described gauge tap of control, with phase place and the amplitude of the output current of adjusting described inverter.
4. rectifier test method according to claim 3, it is characterized in that, phase place and the amplitude of adjusting the output current of described inverter are specially: adjust the single spin-echo of the output voltage of the phase place of output current of described inverter and described inverter, the amplitude of adjusting the output current of described inverter equates with described output current amplitude preset value.
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| CN 201010601520 CN102116850B (en) | 2010-12-09 | 2010-12-09 | Device and method for testing rectifier |
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| CN 201010601520 CN102116850B (en) | 2010-12-09 | 2010-12-09 | Device and method for testing rectifier |
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| CN102116850B true CN102116850B (en) | 2013-02-13 |
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| CN102411102B (en) * | 2011-07-29 | 2013-10-23 | 株洲南车时代电气股份有限公司 | System and method for power examination test of large-power rectifier |
| CN102508067B (en) * | 2011-11-01 | 2014-06-25 | 株洲南车时代电气股份有限公司 | Performance test device for auxiliary converter of electric locomotive |
| CN102508071B (en) * | 2011-11-03 | 2014-07-02 | 天津电气传动设计研究所 | Rated capacity test method of active front end voltage-type alternating current-direct current-alternating current frequency converter |
| CN109642918B (en) * | 2016-08-24 | 2021-03-09 | 东芝三菱电机产业系统株式会社 | Power-on evaluation test device of input filter for pulse width modulation converter |
| CN108732441A (en) * | 2018-05-07 | 2018-11-02 | 天津瑞能电气有限公司 | A kind of aging testing system based on current transformer product |
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| US5017800A (en) * | 1989-09-29 | 1991-05-21 | Wisconsin Alumni Research Foundation | AC to DC to AC power conversion apparatus with few active switches and input and output control |
| US5570279A (en) * | 1994-09-21 | 1996-10-29 | The Research And Development Institute, Inc. At Montana State University | PWM converters for three phase AC power control and AC to DC conversion |
| US20050286274A1 (en) * | 2004-06-29 | 2005-12-29 | Hans-Erik Pfitzer | Self-testing power supply apparatus, methods and computer program products |
| CN100533166C (en) * | 2007-06-29 | 2009-08-26 | 株洲南车时代电气股份有限公司 | Current converter test circuit |
| CN201392375Y (en) * | 2009-03-24 | 2010-01-27 | 深圳市同朗科技有限公司 | Aging test device |
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