CN205620480U - Many specifications film capacitor ripple current endurance's test fixture - Google Patents
Many specifications film capacitor ripple current endurance's test fixture Download PDFInfo
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- CN205620480U CN205620480U CN201620319765.6U CN201620319765U CN205620480U CN 205620480 U CN205620480 U CN 205620480U CN 201620319765 U CN201620319765 U CN 201620319765U CN 205620480 U CN205620480 U CN 205620480U
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Abstract
The utility model discloses a many specifications film capacitor ripple current endurance's test fixture, include: the box and set up radiator in the box, exchange the reactance ware, the examination film capacitor awaits measuring to and set up the box top and in proper order electric connection NULL copper bar, rectifier bridge, direct current copper bar, IGBT power device, exchange the output copper bar, should exchange output copper bar output with exchange reactance ware electric connection, the examination film capacitance connection that awaits measuring is in between the positive negative pole of direct current copper bar, the radiator lies in the box top and exchanges between the reactance ware. The utility model discloses a test fixture can satisfy according to current scheme and is used for multiple specification film capacitor commonly used to be able to bear or endure ripple current capability test, only need change film capacitor. Can make different film capacitor test on same equipment tooling, data contrast nature is strong, through low pressure converter drive fan, can simulate the operating mode environment under the different wind speed amount of wind circumstances.
Description
Technical field
This utility model relates to wind electric converter, the test fixture of a kind of many specifications thin film capacitor ripple current tolerance.
Background technology
Along with thin film capacitor obtains using the most widely in power electronics industry, as one of core devices, when new product development, thin film capacitor for new spec different brands, need the resistance to ripple current performance of thin film capacitor is carried out test and comparison, draw its application performance in the product.The most conventional testing scheme is that the power model selecting product is tested as frock.This means that the thin film capacitor of different size needs to select different modules to test, change test and more bother, and make the platform frock disunity of test, different test data comparabilities weaken.
Owing to the current transformer producer in current power electron trade is not the thin-film capacitor manufacturer of specialty, the ripple current test equipment of disappearance relevant speciality, extra needs of buying take a significant amount of time and cost.The thin film capacitor of different size encapsulation is difficult to test on same test fixture, and the most different encapsulation need to be selected different model power model and test；Dismounting, platform building is inconvenient, and platform is also difficult to unified.And during thin-film capacitor test, large number of, each electric capacity is it is difficult to ensure that be under equivalent environment test, data deficiency comparative.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide the test fixture of a kind of many specifications thin film capacitor ripple current tolerance.
The technical solution adopted in the utility model is:
A kind of test fixture of many specifications thin film capacitor ripple current tolerance, including: casing, with the radiator being arranged in casing, AC reactor, thin-film capacitor to be tested, and it is arranged on casing top and the exchange input copper bar being electrically connected with successively, rectifier bridge, direct current copper bar, IGBT power device, exchange output copper bar, this exchange output copper bar outfan is electrically connected with described AC reactor, thin-film capacitor to be tested is connected between the both positive and negative polarity of described direct current copper bar, and described radiator is between casing top and AC reactor.
Further, described test fixture also includes the fixing cover of an electric capacity, and this electric capacity is fixed cover and is fastened on thin-film capacitor to be tested.
Further, described test fixture also includes a tooling base, and this tooling base is arranged at described box bottom with supporting box.
Further, described casing is outside is provided with cooling fan with radiator corresponding position.
Further, described casing is outside is respectively arranged with aerator and air exhauster with both sides, AC reactor corresponding position.
The beneficial effects of the utility model:
Test fixture of the present utility model can be met by existing scheme and carries out resistance to ripple current aptitude tests for multiple regular size thin film capacitor, and can be common in a structure install, it is not necessary to devices such as heat exchange radiators, it is only necessary to change thin film capacitor.Different thin film capacitors can be made to test on same equipment frock, and data comparability is strong, and frock mobility is strong, it is simple to move at any time；Drive blower fan by low voltage frequency converter, the work condition environment in the case of different wind speed air quantity can be simulated.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model rather than whole embodiments, and those skilled in the art is under accompanying drawing illustrates premise, it is thus achieved that other designs and accompanying drawing:
Fig. 1 is the axonometric chart (hiding front panel) of this utility model test fixture；
Fig. 2 is the top view of this utility model test fixture；
Fig. 3 is the electrical schematic diagram of this utility model test fixture.
Detailed description of the invention
With reference to shown in Fig. 1-Fig. 3, test fixture for a kind of many specifications thin film capacitor ripple current tolerance of the present utility model, including: tooling base 10 be arranged on the casing 20 on tooling base 10, with the radiator 30 being arranged in casing 20, AC reactor 40, thin-film capacitor 50 to be tested, and it is arranged on casing 20 top and the exchange input copper bar 60 being electrically connected with successively, rectifier bridge 70, direct current copper bar 80, IGBT power device 90, exchange output copper bar 100, this exchange output copper bar 100 outfan is electrically connected with described AC reactor 40, thin-film capacitor 50 to be tested is connected between the both positive and negative polarity of described direct current copper bar 80, described radiator 30 is between casing 20 top and AC reactor 40.
Stability during in order to keep testing, described test fixture also includes that an electric capacity fixes cover 110, and the fixing cover 110 of this electric capacity is fastened on thin-film capacitor 50 to be tested.In terms of heat radiation, casing 20 is outside is provided with cooling fan 120 with radiator 30 corresponding position, and casing 20 is outside is respectively arranged with aerator 130 and air exhauster 140 with both sides, AC reactor 40 corresponding position.
The operation principle that this utility model is based on is: overall employing Reactive Power Control circulation pattern pattern.When such as IGBT opens shutoff, DC bus current is first to flow through AC reactor 40, then is back to thin-film capacitor 50 to be tested, is consequently formed circulation.Power model output=DC bus capacitor power-IGBT loss power.That is: module output voltage * module output current=DC bus-bar voltage * electric capacity ripple current-IGBT loss power.
So in theory, in the case of output is certain, the size of ripple current is also fixing；By the number of constantly compression direct current bus bar appearance to one, be equivalent to the proportioning of electric capacity with output to reduce further, just ripple current can be concentrated on remaining electric capacity so that it is our the use condition of regulation can be reached and test.As long as it addition, maintain certain DC voltage, by changing output electric current and voltage, it is possible to reach to regulate the purpose of electric capacity ripple current size.Ripple current has the parameter of order of magnitude incessantly, also has the parameter of a frequency.The frequency of electric capacity electric discharge is exactly the switching frequency of IGBT.Therefore the relevant software and hardware of test is selected, it is possible to the switching frequency of IGBT is set, makes frequency range adjustable, just meet electric capacity use requirement in actual applications.The heat radiation of reactor 40 uses blower fan one side convulsion, the mode of another side air blast, can deduct a percentage greatly wind speed and radiating efficiency.
Other parts of operation instruction, first frock are standing part, it is only necessary to test according to reality, change the fixing cover 110 of corresponding electric capacity and thin-film capacitor to be tested 50.After choosing the thin film capacitor of different size, by specifying with nut bottom thin-film capacitor 50 to be tested, direct current copper bar 80 is fixed with capacitor terminal.Start blower fan on request, regulate wind speed.Preparation completes.Dependence test work can be proceeded by.
As mentioned above, can be seen that test fixture of the present utility model can be met by existing scheme and carry out resistance to ripple current aptitude tests for multiple regular size thin film capacitor, and can be common in a structure install, it is not necessary to devices such as heat exchange radiators, it is only necessary to change thin film capacitor.Different thin film capacitors can be made to test on same equipment frock, and data comparability is strong, and frock mobility is strong, it is simple to move at any time；Drive blower fan by low voltage frequency converter, the work condition environment in the case of different wind speed air quantity can be simulated.
The foregoing is only preferred embodiments of the present utility model, this utility model is not limited to above-mentioned embodiment, as long as realizing within the technical scheme of this utility model purpose broadly falls into protection domain of the present utility model with essentially identical means.
Claims (5)
1. the test fixture of the ripple current tolerance of specification thin film capacitor more than a kind, it is characterized in that including: casing, with the radiator being arranged in casing, AC reactor, thin-film capacitor to be tested, and it is arranged on casing top and the exchange input copper bar being electrically connected with successively, rectifier bridge, direct current copper bar, IGBT power device, exchange output copper bar, this exchange output copper bar outfan is electrically connected with described AC reactor, thin-film capacitor to be tested is connected between the both positive and negative polarity of described direct current copper bar, and described radiator is between casing top and AC reactor.
The test fixture of a kind of many specifications thin film capacitor ripple current tolerance the most according to claim 1, it is characterised in that: it also includes the fixing cover of an electric capacity, and this electric capacity is fixed cover and is fastened on thin-film capacitor to be tested.
The test fixture of a kind of many specifications thin film capacitor ripple current tolerance the most according to claim 1, it is characterised in that: it also includes a tooling base, and this tooling base is arranged at described box bottom with supporting box.
The test fixture of a kind of many specifications thin film capacitor ripple current tolerance the most according to claim 1, it is characterised in that: described casing is outside is provided with cooling fan with radiator corresponding position.
The test fixture of a kind of many specifications thin film capacitor ripple current tolerance the most according to claim 1, it is characterised in that: described casing is outside is respectively arranged with aerator and air exhauster with both sides, AC reactor corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319765.6U CN205620480U (en) | 2016-04-14 | 2016-04-14 | Many specifications film capacitor ripple current endurance's test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319765.6U CN205620480U (en) | 2016-04-14 | 2016-04-14 | Many specifications film capacitor ripple current endurance's test fixture |
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| CN205620480U true CN205620480U (en) | 2016-10-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866583A (en) * | 2016-04-14 | 2016-08-17 | 广东明阳龙源电力电子有限公司 | Testing tool for ripple current resistance of multi-specification thin-film capacitor |
| CN109490674A (en) * | 2018-12-27 | 2019-03-19 | 艾威姆（天津）电气有限公司 | A kind of electric system compensation capacitor integrated test system |
-
2016
- 2016-04-14 CN CN201620319765.6U patent/CN205620480U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866583A (en) * | 2016-04-14 | 2016-08-17 | 广东明阳龙源电力电子有限公司 | Testing tool for ripple current resistance of multi-specification thin-film capacitor |
| CN109490674A (en) * | 2018-12-27 | 2019-03-19 | 艾威姆（天津）电气有限公司 | A kind of electric system compensation capacitor integrated test system |
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