CN211125336U - Annular vertical winding inductor suitable for L C L filter circuit - Google Patents
Annular vertical winding inductor suitable for L C L filter circuit Download PDFInfo
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- CN211125336U CN211125336U CN202020133931.XU CN202020133931U CN211125336U CN 211125336 U CN211125336 U CN 211125336U CN 202020133931 U CN202020133931 U CN 202020133931U CN 211125336 U CN211125336 U CN 211125336U
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- inductor
- copper bar
- side inductor
- electric wire
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Abstract
The utility model discloses an inductor is immediately wound to annular suitable for L C L filter circuit, including an insulation substrate, install electric wire netting side inductance and the contravariant side inductance of establishing ties each other on the insulation substrate, electric wire netting side inductance and contravariant side inductance are glued respectively and are fixed in on the insulation substrate, electric wire netting side inductance and contravariant side inductance all include the ring magnetic core, the ring magnetic core is formed by two halves ring magnetic core concatenations, it has flat coil all to twine on the ring magnetic core, flat coil sets up to double-line duplex winding structure, electric wire netting side inductance and contravariant side inductance are connected through a public copper bar electricity, public copper bar is connected with outside filter capacitor binding post, electric wire netting side inductance is equipped with an electric wire netting side copper bar of being connected with electric wire netting side binding post, contravariant side inductance is equipped with an contravariant side copper bar of being connected with the contravariant bridge, public copper bar, electric wire netting side copper bar and contravariant side copper bar tip all set up a wiring hole that is used for the electricity.
Description
Technical Field
The utility model relates to an inductor technical field, in particular to annular is immediately around inductor suitable for L C L filter circuit.
Background
L C L type grid-connected inverter is widely regarded because of its superior high-frequency harmonic suppression capability, a plurality of inverter filtering adopts L C L main loop topology, compared with L C filter, L C L filter has better high-frequency harmonic attenuation, wherein two L inductors are an inverter side inductor and a grid side inductor respectively.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an inductor is found to annular suitable for L C L filter circuit, aims at simplifying the structure of traditional inductor, and reduction in production cost improves heat dispersion and life.
In order to achieve the purpose, the utility model provides an annular is immediately around inductor suitable for L C L filter circuit, including an insulation substrate, install the electric wire netting side inductance and the contravariant side inductance of establishing ties each other on the insulation substrate, electric wire netting side inductance with contravariant side inductance is glued respectively and is fixed in on the insulation substrate, electric wire netting side inductance with contravariant side inductance all includes the ring magnetic core, the ring magnetic core is formed by two ring magnetic core concatenations, all twine flat coil on the ring magnetic core, flat coil sets up to double-wire parallel winding structure, electric wire netting side inductance with contravariant side inductance is connected through a public copper bar electricity, public copper bar is connected with outside filter capacitor binding post, electric wire netting side inductance is equipped with an electric wire netting side copper bar of being connected with electric wire netting side binding post, contravariant side inductance is equipped with an contravariant side copper bar of being connected with the contravariant bridge, a wiring hole for the electricity is seted up to public copper bar, electric wire netting side copper bar and contravariant side copper bar tip.
Preferably, the flat coil wound on the inverter side inductor is set to be a flat enameled copper wire with the specification of 1.5x10mm, and the central angle included angle between adjacent turns of the flat coil is set to be 11 °.
Preferably, the flat coil wound on the grid-side inductor is set to be a flat enameled copper wire with the specification of 1.5x8mm, and the central angle included angle between adjacent turns of the flat coil is set to be 18 °.
Preferably, the insulating substrate is provided as an epoxy board.
Preferably, a fixed steel strip is further added to the grid side inductor and the inverter side inductor respectively, the fixed steel strip surrounds the flat coil along the circumferential direction of the circular magnetic core, and two ends of the fixed steel strip are fixed to the insulating substrate.
Compared with the prior art, the beneficial effects of the utility model are that: the mutual independent structural design of the existing power grid side inductor and the inversion side inductor is simplified, the power grid side inductor and the inversion side inductor are integrated on the same insulating substrate, the structural design is simplified, the cost is reduced, the assembly is convenient, and the connection mode of connecting cables or copper bars is simpler. Meanwhile, the power grid side inductor and the inverter side inductor are both arranged in a way of vertically winding flat copper wires, so that the heat dissipation performance and the flow rate of the inductor are improved, the cost of the whole machine is reduced, and the service life of the whole machine is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of the circuit connection between the grid side inductor and the inverter side inductor of the present invention;
FIG. 2 is a schematic structural view of the ring-shaped vertical wound inductor of the present invention;
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Referring to fig. 1 and 2, the annular end-wound inductor suitable for L C L filter circuits provided in this embodiment includes an insulating substrate 1, a grid-side inductor L02 and an inverter-side inductor L11 that are connected in series with each other are mounted on the insulating substrate 1, the grid-side inductor L2 and the inverter-side inductor L1 are respectively fixed to the insulating substrate 1 by adhesive, the grid-side inductor L2 and the inverter-side inductor L1 each include a circular magnetic core 2, the circular magnetic core 2 is formed by splicing two half circular magnetic cores, a flat coil 3 is wound on the circular magnetic core 2, the flat coil 3 is in a double-wire parallel winding structure, the grid-side inductor L2 and the inverter-side inductor L1 are electrically connected through a common copper bar 4, the common copper bar 4 is connected to an external filter capacitor terminal (not shown in the figure), the grid-side inductor L2 is provided with a grid-side copper bar 5 connected to a grid-side terminal (not shown in the figure), the inverter-side inductor L1 is provided with a common copper bar 6 connected to an inverter bridge (not shown in the figure), and the inverter-side copper bar 6 and the bus bar 6 is electrically connected to an end of the inverter-side copper bar 7.
It should be noted that, in this embodiment, the structural design of the mutual independence of the existing grid side inductor L and the inverter side inductor L is simplified, the grid side inductor L and the inverter side inductor L are integrated on the same insulating substrate 1, the structural design is simplified, the cost is reduced, the assembly is convenient, and the connection mode of connecting cables or copper bars is simpler.
Further, flat coil 3 of winding sets up to specification 1.5x10 mm's flat enameled copper wire on the contravariant side inductance L1, just circle angle contained angle between the adjacent circle of flat coil 3 sets up to 11. last winding flat coil 3 of electric wire netting side inductance L2 sets up to specification 1.5x8 mm's flat enameled copper wire, just circle angle contained angle between the adjacent circle of flat coil 3 sets up to 18.
Further, the insulating substrate 1 is configured as an epoxy resin plate. The epoxy resin has strong insulating property and mechanical property, is high-temperature resistant and corrosion resistant, can effectively prolong the service life of the epoxy resin, and saves the cost.
Furthermore, a fixing steel strip 8 is additionally arranged on each of the power grid side inductor L2 and the inverter side inductor L1, the fixing steel strip 8 surrounds the flat coil 3 along the circumferential direction of the annular magnetic core 2, and two ends of the fixing steel strip 8 are fixed on the insulating substrate 1, so that the installation stability of the power grid side inductor L2 and the inverter side inductor L1 is further improved.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. An annular vertical winding inductor suitable for an L C L filter circuit is characterized by comprising an insulating substrate, wherein a power grid side inductor and an inversion side inductor which are connected in series are mounted on the insulating substrate, the power grid side inductor and the inversion side inductor are respectively fixed on the insulating substrate in a dispensing manner, the power grid side inductor and the inversion side inductor respectively comprise a circular magnetic core, the circular magnetic core is formed by splicing two half circular magnetic cores, flat coils are wound on the circular magnetic core and are arranged in a double-wire parallel winding structure, the power grid side inductor and the inversion side inductor are electrically connected through a public copper bar, the public copper bar is connected with an external filter capacitor wiring terminal, the power grid side inductor is provided with a power grid side copper bar connected with a power grid side wiring terminal, the inversion side inductor is provided with an inversion side copper bar connected with an inversion bridge, and wiring holes for electric connection are formed in the ends of the public copper bar, the power grid side inductor and the inversion side copper bar.
2. The toroidal vertical wound inductor suitable for use in L C L filter circuits, as claimed in claim 1, wherein the pancake coil wound on the inverter side inductor is provided as 1.5x10mm gauge flat enameled copper wire, and the included angle between the central angles of adjacent turns of the pancake coil is 11 °.
3. The toroidal vertical wound inductor suitable for use in L C L filter circuits, as recited in claim 1, wherein the flat coil wound on said grid side inductor is provided as a 1.5x8mm gauge flat enameled copper wire and the included angle between the centers of the circles of adjacent turns of said flat coil is provided at 18 °.
4. The annular edgewise inductor for the L C L filter circuit as recited in any one of claims 1-3, wherein the insulating substrate is configured as an epoxy board.
5. The toroidal vertical wound inductor suitable for L C L filter circuit as claimed in claim 4, wherein said grid side inductor and said inverter side inductor are further added with a fixing steel strip respectively, said fixing steel strip is wound around said flat coil along the circumferential direction of said toroidal core, and both ends of said fixing steel strip are fixed to said insulating substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133931.XU CN211125336U (en) | 2020-01-20 | 2020-01-20 | Annular vertical winding inductor suitable for L C L filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133931.XU CN211125336U (en) | 2020-01-20 | 2020-01-20 | Annular vertical winding inductor suitable for L C L filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211125336U true CN211125336U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020133931.XU Active CN211125336U (en) | 2020-01-20 | 2020-01-20 | Annular vertical winding inductor suitable for L C L filter circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041996A1 (en) * | 2022-08-24 | 2024-02-29 | Würth Elektronik eiSos Gmbh & Co. KG | Passive electrotechnical component |
-
2020
- 2020-01-20 CN CN202020133931.XU patent/CN211125336U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041996A1 (en) * | 2022-08-24 | 2024-02-29 | Würth Elektronik eiSos Gmbh & Co. KG | Passive electrotechnical component |
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