CN208477028U - A kind of aging testing system based on current transformer product - Google Patents
A kind of aging testing system based on current transformer product Download PDFInfo
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- CN208477028U CN208477028U CN201820665984.9U CN201820665984U CN208477028U CN 208477028 U CN208477028 U CN 208477028U CN 201820665984 U CN201820665984 U CN 201820665984U CN 208477028 U CN208477028 U CN 208477028U
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- current transformer
- rectifier
- inverter
- inductance
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Abstract
The utility model provides a kind of aging testing system based on current transformer product, the ac input end of first rectifier of the first current transformer is connect with power grid, the ac output end of first inverter is connect with the input terminal of LC filter circuit, second rectifier of the second current transformer is connect with the output end of LC filter circuit, the ac output end of second inverter is connected with the primary side winding of isolating transformer, and the vice-side winding of isolating transformer is connect with power grid.Aging testing system described in the utility model based on current transformer product, the product and product of setting to the circuit dragged, can the product to different capabilities carry out factory test, effectively save space resources, greatly reduce production cost.
Description
Technical field
The utility model belongs to current transformer field, more particularly, to a kind of aging testing system based on current transformer product.
Background technique
In the factory test of current transformer, need to test each acquisition circuit in current transformer during full-load run whether
It is abnormal, and the critical component of current transformer is semiconductor IGBT, and the premise of the good stable operation of IGBT is that heat dissipation is good, by
If occurring device failure etc. for insufficient will lead to after product export of heat dissipation dependence test of current transformer in various reasons and asking
Topic.It is always a big problem of current transformer producer currently for the problem of aging of current transformer product, because for different capabilities
Current transformer needs to set up the relatively high testing stand of cost respectively, currently the problem of aging about current transformer product, using method
It is motor to method is dragged to obtain, the product of multiple capacity series can be directed to than more actually dry run situation in this way, needed
It expends and greatly establishes testing stand at original.
Summary of the invention
In view of this, the utility model is directed to a kind of aging testing system based on current transformer product, to solve needle
The test of the current transformers of different capabilities is needed to establish testing stand respectively, result in waste of resources, labor intensive, production cost it is raised
Problem.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of aging testing system based on current transformer product, including the first current transformer, the second current transformer, isolating transformer
With LC filter circuit, first current transformer includes the first rectifier and the first inverter, and second current transformer includes second
Inverter and the second rectifier, the first end that one end of the isolating transformer is respectively connected to power grid, is connected to inductance L1, institute
The first end for stating inductance L1 is grounded through capacitor C1, and second end is through first rectifier, first inverter, inductance L3 connection
To the input terminal of the LC filter circuit, the output end of the LC filter circuit is through inductance L4, second rectifier, described the
Two inverters are connected to one end of inductance L2, and the other end of the inductance L2 is grounded through capacitor C2 respectively, is connected to the isolation
The other end of transformer.
Further, the LC filter circuit includes inductance L5 and capacitor C3, and one end of the inductance L5 is respectively connected to
The inductance L3, it is grounded through the capacitor C3, the other end is connected to the inductance L4.
Further, first rectifier and second rectifier are PWM rectifier.
Further, first inverter and second inverter are PWM inverter.
Further, the isolating transformer is shielding isolating transformer.
Compared with the existing technology, the aging testing system described in the utility model based on current transformer product has following excellent
Gesture:
(1) aging testing system described in the utility model based on current transformer product, the product and product of setting are to dragging
Circuit, can the product to different capabilities carry out factory test, effectively save space resources, greatly reduce and be produced into
This.
(2) aging testing system described in the utility model based on current transformer product, the first rectifier of setting and
Two inverters can effectively control the stabilization of the first current transformer, the second current transformer DC bus-bar voltage.
(3) the second rectifier of the aging testing system described in the utility model based on current transformer product, setting can
The size for effectively controlling entire circuit cycle power guarantees the accuracy of safety and the test of test macro.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the topological diagram of the aging testing system based on current transformer product described in the utility model embodiment；
Fig. 2 is second of topological diagram in the utility model embodiment the embodiment described.
Description of symbols:
The first current transformer of 1-；The first rectifier of 11-；The first inverter of 12-；The second current transformer of 2-；The second inverter of 21-；
The second rectifier of 22-；3- isolating transformer；4-LC filter circuit.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of aging testing system based on current transformer product, as shown in Figure 1, including the first current transformer 1, the second current transformer
2, isolating transformer 3 and LC filter circuit 4, first current transformer 1 includes the first rectifier 11 and the first inverter 12, described
Second current transformer 2 includes the second inverter 21 and the second rectifier 22, and one end of the isolating transformer 3 is respectively connected to electricity
The first end of net, the first end for being connected to inductance L1, the inductance L1 is grounded through capacitor C1, and second end is through first rectifier
11, first inverter 12, inductance L3 are connected to the input terminal of the LC filter circuit 4, the output of the LC filter circuit 4
End is connected to one end of inductance L2 through inductance L4, second rectifier 22, second inverter 21, and the inductance L2's is another
One end is grounded, is connected to respectively the other end of the isolating transformer 3 through capacitor C2.
The LC filter circuit 4 includes that inductance L5 and capacitor C3, one end of the inductance L5 are respectively connected to the inductance
L3, it is grounded through the capacitor C3, the other end is connected to the inductance L4.
First rectifier 11 and second rectifier 22 are PWM rectifier.
First inverter 12 and second inverter 21 are PWM inverter.
The ac input end of first rectifier 11 of the first current transformer 1 is connect with power grid, and the exchange of the first inverter 12 is defeated
Outlet is connect with the input terminal of LC filter circuit 4, the output end of the second rectifier 22 and LC filter circuit 4 of the second current transformer 2
Connection, the ac output end of the second inverter 21 are connected with the primary side winding of isolating transformer 3, the secondary side in the 3 of isolating transformer
Winding is connect with power grid.
By three-phase AC grid voltage commutation at steady dc voltage, the first inverter 12 will be stablized first rectifier 11
DC bus-bar voltage be reverse into the alternating current of three phase variable frequency, by 4 unsteady flow three phase sine voltage of LC filter circuit, second
The three phase sine voltage commutation that rectifier 22 exports LC filter circuit 4 is at direct current, then by the second inverter 21 by direct current
Pressure is reverse into three-phase alternating current and completes circulation by 3 foldback of isolating transformer telegram in reply net.
First rectifier, 11 main target is to control the stabilization of 1 DC bus-bar voltage of the first current transformer, the second inverter 21
Main target be control 2 DC bus-bar voltage of the second current transformer stabilization；The main target of first inverter 12 is control LC
The stabilization of 4 output AC voltage of filter circuit, the main target of the second rectifier 22 are the power for controlling entire circuit cycle
Size.
The isolating transformer 3 is shielding isolating transformer.
As shown in Fig. 2, for a topology deformation in technical solution, wherein the first rectifier 11 and the second rectifier 22 become
Three-phase uncontrollable rectifier bridge, in order to reach the target of power cycle, the direct current of the first current transformer of target control 1 of the first rectifier 11
Busbar voltage is stablized, and the DC bus-bar voltage of the second current transformer of target control 2 of the second rectifier 22 is stablized, the first inverter 12
4 output AC voltage of target control LC filter circuit stabilization, the control target of the second inverter 21 is the entire circuit of control
The size of the power of circulation.
A kind of working principle of the aging testing system based on current transformer product are as follows:
By three-phase AC grid voltage commutation at steady dc voltage, the first inverter 12 will be stablized first rectifier 11
DC bus-bar voltage be reverse into the alternating current of three phase variable frequency, by 4 unsteady flow three phase sine voltage of LC filter circuit, second
The three phase sine voltage commutation that rectifier 22 exports LC filter circuit 4 is at direct current, then by the second inverter 21 by direct current
Pressure is reverse into three-phase alternating current and completes circulation by 3 foldback of isolating transformer telegram in reply net.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of aging testing system based on current transformer product, it is characterised in that: including the first current transformer (1), the second unsteady flow
Device (2), isolating transformer (3) and LC filter circuit (4),
First current transformer (1) includes the first rectifier (11) and the first inverter (12), and second current transformer (2) includes
One end of second inverter (21) and the second rectifier (22), the isolating transformer (3) is respectively connected to power grid, is connected to electricity
Feel the first end of L1, the first end of the inductance L1 is grounded through capacitor C1, and second end is through first rectifier (11), described the
One inverter (12), inductance L3 are connected to the input terminal of the LC filter circuit (4), the output end of the LC filter circuit (4)
One end of inductance L2 is connected to through inductance L4, second rectifier (22), second inverter (21), the inductance L2's
The other end is grounded, is connected to respectively the other end of the isolating transformer (3) through capacitor C2.
2. a kind of aging testing system based on current transformer product according to claim 1, it is characterised in that: the LC filter
Wave circuit (4) includes inductance L5 and capacitor C3, and one end of the inductance L5 is respectively connected to the inductance L3, through the capacitor C3
Ground connection, the other end are connected to the inductance L4.
3. a kind of aging testing system based on current transformer product according to claim 1, it is characterised in that: described first
Rectifier (11) and second rectifier (22) are PWM rectifier.
4. a kind of aging testing system based on current transformer product according to claim 1, it is characterised in that: described first
Inverter (12) and second inverter (21) are PWM inverter.
5. a kind of aging testing system based on current transformer product according to claim 1, it is characterised in that: the isolation
Transformer (3) is shielding isolating transformer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820665984.9U CN208477028U (en) | 2018-05-07 | 2018-05-07 | A kind of aging testing system based on current transformer product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820665984.9U CN208477028U (en) | 2018-05-07 | 2018-05-07 | A kind of aging testing system based on current transformer product |
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| CN208477028U true CN208477028U (en) | 2019-02-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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- 2018-05-07 CN CN201820665984.9U patent/CN208477028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211027 Address after: 300308 100 Hangtian Road, Airport Economic Zone, Binhai New Area, Tianjin Patentee after: TIANJIN RUIYUAN ELECTRICAL Co.,Ltd. Address before: No.1 Xinghua No.7 Branch Road, economic development zone, Xiqing District, Tianjin Patentee before: Tianjin Ruineng electric Co.,LTD. |
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| TR01 | Transfer of patent right |