CN206237297U - A kind of low ripple output hybrid filter circuit - Google Patents
A kind of low ripple output hybrid filter circuit Download PDFInfo
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- CN206237297U CN206237297U CN201621156385.1U CN201621156385U CN206237297U CN 206237297 U CN206237297 U CN 206237297U CN 201621156385 U CN201621156385 U CN 201621156385U CN 206237297 U CN206237297 U CN 206237297U
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- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model provides a kind of low ripple output hybrid filter circuit, including main filter inductance, differential mode filter capacitor, common mode filtering electric capacity, the first filter circuit, the second filter circuit, wherein：The main filter inductance includes the first coil and the second coil of equidirectional coiling, and the first coil and the second coil share a magnetic circuit；The first coil is serially connected with the first filter circuit, and second coil tandem is in the second filter circuit；The differential mode filter capacitor is connected respectively to the first electric capacity of the first output port and the second output port including two ends, the common mode filtering electric capacity includes the second electric capacity and the 3rd electric capacity that are connected in series between the first output port and the second output port, and the tie point of second electric capacity and the 3rd electric capacity is grounded.First coil and the second coil that the utility model passes through common magnetic Circuit Design, and combine differential mode filter capacitor, common mode filtering electric capacity so that main filter inductance has the function of differential mode and common mode filtering concurrently.
Description
Technical field
The utility model is related to inverter and DC converter field, adjustable more specifically to a kind of output voltage
Inverter and DC converter in low ripple output hybrid filter circuit.
Background technology
With the development of Power Electronic Technique, the equipment such as AC/DC converter is widely applied.In these equipment
Inverter and DC converter, because power device is using PWM controls, necessarily cause the injection of electric harmonic.To improve inversion
Device and the quality of DC converter output, reduce harmonic pollution, it is necessary to which the output to inverter and DC converter is filtered
Treatment.
In the adjustable inverter of existing output voltage and DC converter, output filter generally uses preset parameter
Design, it is impossible to voltage ripple technical indicator is satisfied by full voltage and full power range.Also, existing wave filter is applied defeated
Go out when on the adjustable inverter of voltage and dc source product, under the load behavior of low pressure low current, the high frequency of output voltage
Ripple voltage relative value index is much larger than the rating index defined in product specification book, while simultaneous in order to meet the electromagnetism of regulation
Hold technical indicator, the said goods generally need the electromagnetic interface filter of the design specialized in output filter, particularly special common mode
Electromagnetic interface filter, this considerably increases the cost and volume of product.
Utility model content
The technical problems to be solved in the utility model is, for output filter in above-mentioned inverter and DC converter
The problem of voltage ripple technical indicator cannot be met, there is provided a kind of low ripple output hybrid filter circuit.
The technical scheme that the utility model solves above-mentioned technical problem is to provide a kind of low ripple output hybrid filtered electrical
Road, including main filter inductance, differential mode filter capacitor, common mode filtering electric capacity, positioned at first input port and the first output port it
Between the first filter circuit, the second filter circuit between the second input port and the second output port, wherein：The master
Filter inductance includes the first coil and the second coil of equidirectional coiling, and the first coil and the second coil share a magnetic
Road；The first coil is serially connected with the first filter circuit, and second coil tandem is in the second filter circuit；The differential mode filtering
Electric capacity is connected respectively to the first electric capacity of the first output port and the second output port, the common mode filtering electric capacity bag including two ends
Include the second electric capacity and the 3rd electric capacity being connected in series between the first output port and the second output port, and second electric capacity
Tie point with the 3rd electric capacity is grounded.
In low ripple output hybrid filter circuit described in the utility model, the first coil and the second coil
Specifications parameter is identical.
In low ripple output hybrid filter circuit described in the utility model, the filter circuit also includes that auxiliary is filtered
Ripple inductance, first fuse and second fuse, wherein：The auxiliary filter inductance includes the tertiary coil of equidirectional coiling
With the 4th coil, and the tertiary coil and the shared magnetic circuit of the 4th coil；The tertiary coil is connected with first fuse
The first auxiliary filter branch road is connected and composed, and is connected between the first coil of the first filter circuit and the first output port；Institute
State the 4th coil and be connected in series the second auxiliary filter branch road of composition with second fuse, and be connected to the second of the second filter circuit
Between coil and the second output port.
In low ripple output hybrid filter circuit described in the utility model, the filter circuit also includes the first control
Contactor processed and the second control contactor, wherein：First control contactor is connected with the first auxiliary filter branch circuit parallel connection, with
Tertiary coil and first fuse are accessed into the first filter circuit or bypass；Second control contactor and the second auxiliary filter
Branch circuit parallel connection is connected, and the 4th coil and second fuse are accessed into the second filter circuit or bypass.
In low ripple output hybrid filter circuit described in the utility model, the tertiary coil and the 4th coil
Specifications parameter is identical.
In low ripple output hybrid filter circuit described in the utility model, the first input port and second defeated
Inbound port is respectively connecting to the different switching tube bridge arms of inverter or DC converter.
Low ripple output hybrid filter circuit of the present utility model has following technique effect：By common magnetic Circuit Design
First coil and the second coil, and with reference to differential mode filter capacitor, common mode filtering electric capacity so that main filter inductance has differential mode concurrently and is total to
The function of mould filtering.Also, the utility model can be used as the synthesis filter of variable element, in the negative of output high-voltage great-current
Filtering parameter is adjusted to the parameter of the suitable operating mode under load operating mode to meet the technical indicator of output voltage ripple；It is low exporting
Press under the load behavior of low current, the filter inductance value of filter circuit is increased by accessing the auxiliary filter branch road connected, from
And reach the purpose for suppressing output voltage ripple.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model low ripple output hybrid filter circuit embodiment.
Fig. 2 is the schematic diagram of the utility model low ripple another embodiment of output hybrid filter circuit.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.
It is the schematic diagram of the utility model low ripple output hybrid filter circuit embodiment, the low line as described in Fig. 1-2
Ripple output hybrid filter circuit may be connected to the output end of inverter or DC converter, so that inverter or DC converter
Output meet voltage ripple technical indicator.
Low ripple output hybrid filter circuit in the present embodiment includes main filter inductance, differential mode filter capacitor, common mode
Filter capacitor, the first filter circuit between first input port A and the first output port X, positioned at the second input port B
And second the second filter circuit between output port Y, first input port A and the second input port B are respectively connecting to inversion
The different switching tube bridge arms of device (as shown in Figure 1) or DC converter (as shown in Figure 2).Above-mentioned main filter inductance includes equidirectional
The first coil L1-1 of coiling and the second coil L1-2, and first coil L1-1 and the second coil L1-2 shares a magnetic circuit
(such as coiling to same iron core arm, or coiling is to the different iron core arms of same iron core).First coil L1-1 is serially connected with the first filter
Ripple loop, the second coil L1-2 is serially connected with the second filter circuit.Differential mode filter capacitor is connected respectively to the first output including two ends
First electric capacity C1 of port x and the second output port Y, common mode filtering electric capacity includes being connected in series in the first output port X and the
The second electric capacity C2 and the 3rd electric capacity C3 between two output port Y, and the second electric capacity C2 and the 3rd electric capacity C3 tie point ground connection.
The input of above-mentioned low ripple output hybrid filter circuit is connected to inverter or DC converter, output end connect
When being connected to the load of high-voltage great-current, the size of current for flowing through the first filter circuit and the second filter circuit is identical, in the opposite direction
(one-in-and-one-out), because first coil L1-1 and the second coil L1-2 coilings direction are consistent and share same magnetic circuit, therefore main filter
Ripple inductance is with differential mode filtering and common mode filtering function.Specifically, as the first coil L1-1 of above-mentioned main filter inductance and
When the sense of current flowed through in two coil L1-2 is opposite, main filter inductance and the first electric capacity C1 constitute differential mode filter, and it is poor to realize
Mould is filtered；When the sense of current flowed through in the first coil L1-1 and the second coil L1-2 of main filter inductance is identical, main filtering
Inductance and the second electric capacity C2 and the 3rd electric capacity C3 composition common-mode filters, realize common mode filtering.
Especially, the specifications parameter of above-mentioned first coil L1-1 and the second coil L1-2 is identical, for example material, diameter, around
The number of turns processed etc. is identical.
Above-mentioned low ripple output hybrid filter circuit can also be applied to the load of low pressure low current, now need to be in the first filter
Increase an auxiliary filter branch road in ripple loop and the second filter circuit respectively.Specifically, auxiliary filter branch road can be filtered by auxiliary
Ripple inductance, first fuse F1 and second fuse F2 are constituted, wherein：Auxiliary filter inductance includes the 3rd of equidirectional coiling
Coil L2-1 and the 4th coil L2-2, and tertiary coil L2-1 and the 4th coil L2-2 shares magnetic circuit (such as coiling is to together
One iron core arm, or coiling is to the different iron core arms of same iron core).Above-mentioned tertiary coil L2-1 and first fuse F1 is connected in series
The first auxiliary filter branch road is constituted, and is connected between the first coil L1-1 of the first filter circuit and the first output port X；The
Four coil L2-2 and second fuse F2 are connected in series the second auxiliary filter branch road of composition, and are connected to the of the second filter circuit
Between two coil L1-2 and the second output port Y.
The current specification of above-mentioned auxiliary filter inductance is only to meet low current operating mode, therefore cost is relatively low, while in order to
Protection auxiliary filter inductance in the case of control contactor failure will not overcurrent damage, the utility model is in auxiliary filter branch road
The fuse of middle series connection is matched with auxiliary filter inductive current specification.Especially, above-mentioned tertiary coil L2-1 and the 4th coil L2-
2 specifications parameter is identical.
Above-mentioned low ripple output hybrid filter circuit may also include the first control contactor KM1 and the second control contactor
KM2, wherein the first control contactor KM1 is connected with the first auxiliary filter branch circuit parallel connection, tertiary coil L2-1 is melted with first
Disconnected device F1 accesses the first filter circuit or bypass；Second control contactor KM2 is connected with the second auxiliary filter branch circuit parallel connection, will
4th coil L2-2 and second fuse F2 accesses the second filter circuit or bypass.For example when low ripple output hybrid filtered electrical
When road works in high-voltage great-current load behavior, can close above-mentioned first control contactor KM1 and the second control contactor KM2
Close, by the bypass of auxiliary filter branch road, only main filter inductance work；When filter circuit works in low pressure low current load behavior
When, can disconnect above-mentioned first control contactor KM1 and the second control contactor KM2, the series connection of auxiliary filter branch road is accessed into filter
Ripple loop, now main filter inductance and auxiliary filter inductance cooperation, both inductance value sums are used for circuit filtering, can
Effectively reduce the output voltage ripple under low pressure low current load behavior.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (6)
1. a kind of low ripple output hybrid filter circuit, it is characterised in that：Including main filter inductance, differential mode filter capacitor, it is total to
Mould filter capacitor, the first filter circuit between first input port and the first output port, positioned at the second input port
And second the second filter circuit between output port, wherein：The main filter inductance includes the first coil of equidirectional coiling
With the second coil, and the first coil and the shared magnetic circuit of the second coil；The first coil is serially connected with the first filtering and returns
Road, second coil tandem is in the second filter circuit；The differential mode filter capacitor is connected respectively to the first output including two ends
Port and the first electric capacity of the second output port, the common mode filtering electric capacity include being connected in series in the first output port and second
The second electric capacity and the 3rd electric capacity between output port, and second electric capacity and the 3rd electric capacity tie point ground connection.
2. low ripple output hybrid filter circuit according to claim 1, it is characterised in that：The first coil and
The specifications parameter of two coil is identical.
3. low ripple output hybrid filter circuit according to claim 1 and 2, it is characterised in that：The filter circuit
Also include auxiliary filter inductance, first fuse and second fuse, wherein：The auxiliary filter inductance include it is equidirectional around
The tertiary coil of system and the 4th coil, and the tertiary coil and the 4th coil share a magnetic circuit；The tertiary coil and
One fuse is connected in series the first auxiliary filter branch road of composition, and is connected to first coil and first output of the first filter circuit
Between port；4th coil is connected in series the second auxiliary filter branch road of composition with second fuse, and is connected to the second filter
Between second coil and the second output port in ripple loop.
4. low ripple output hybrid filter circuit according to claim 3, it is characterised in that：The filter circuit is also wrapped
The first control contactor and the second control contactor are included, wherein：First control contactor and the first auxiliary filter branch road are simultaneously
Connection connection, the first filter circuit or bypass are accessed by tertiary coil and first fuse；Second control contactor and
Two auxiliary filter branch circuit parallel connections are connected, and the 4th coil and second fuse are accessed into the second filter circuit or bypass.
5. low ripple output hybrid filter circuit according to claim 3, it is characterised in that：The tertiary coil and
The specifications parameter of four coils is identical.
6. low ripple output hybrid filter circuit according to claim 1, it is characterised in that：The first input port
With the different switching tube bridge arms that the second input port is respectively connecting to inverter or DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156385.1U CN206237297U (en) | 2016-10-31 | 2016-10-31 | A kind of low ripple output hybrid filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156385.1U CN206237297U (en) | 2016-10-31 | 2016-10-31 | A kind of low ripple output hybrid filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237297U true CN206237297U (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621156385.1U Expired - Fee Related CN206237297U (en) | 2016-10-31 | 2016-10-31 | A kind of low ripple output hybrid filter circuit |
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| CN (1) | CN206237297U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776272A (en) * | 2018-05-28 | 2018-11-09 | 煤炭科学技术研究院有限公司 | A kind of test system of frequency conversion equipment Electro Magnetic Compatibility |
| CN109915946A (en) * | 2019-03-21 | 2019-06-21 | 广东美的制冷设备有限公司 | Electric control gear, outdoor unit and air conditioner |
| CN113014079A (en) * | 2019-12-19 | 2021-06-22 | 东元电机股份有限公司 | Frequency converter device and method for selectively outputting current according to output voltage value |
-
2016
- 2016-10-31 CN CN201621156385.1U patent/CN206237297U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776272A (en) * | 2018-05-28 | 2018-11-09 | 煤炭科学技术研究院有限公司 | A kind of test system of frequency conversion equipment Electro Magnetic Compatibility |
| CN109915946A (en) * | 2019-03-21 | 2019-06-21 | 广东美的制冷设备有限公司 | Electric control gear, outdoor unit and air conditioner |
| CN113014079A (en) * | 2019-12-19 | 2021-06-22 | 东元电机股份有限公司 | Frequency converter device and method for selectively outputting current according to output voltage value |
| CN113014079B (en) * | 2019-12-19 | 2022-02-01 | 东元电机股份有限公司 | Frequency converter device and method for selectively outputting current according to output voltage value |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 |