CN-224217328-U - Photovoltaic inverter net side inductance

Abstract

The utility model discloses a net side inductor of a photovoltaic inverter, which comprises a magnetic core, a first winding, a second winding and a third winding, wherein the magnetic core comprises an upper yoke and a lower yoke which are arranged in parallel, a first middle column, a second middle column and a third middle column are respectively connected between the upper yoke and the lower yoke, and a first side column and a second side column are respectively connected between the two ends of the upper yoke and the lower yoke; the upper yoke and the lower yoke have the same cross section, the first middle column, the second middle column and the third middle column have the same cross section, the first side column and the second side column have the same cross section, the cross section of the upper yoke and the cross section of the lower yoke are respectively half of the cross section of the first middle column, the second middle column or the cross section of the third middle column, the cross section of the first side column and the cross section of the second side column are respectively half of the cross section of the upper yoke or the cross section of the lower yoke, the coil winding is wound on the first middle column, the second middle column and the third middle column, the coil winding is provided with an outgoing line, and the base is arranged on the upper yoke and the lower yoke and is used for isolating the upper yoke, the lower yoke and the coil winding. The utility model solves the problem that the network side inductance of the photovoltaic inverter cannot meet the requirements of low-height, low-width and long-length space.

Inventors

• LI ZHANGONG
• LIU GANGTE
• XIE GUANGYUAN
• ZHANG ZHINAN

Assignees

• 河源市京泉华科技有限公司

Dates

Publication Date

20260508

Application Date

20250528

Claims (8)

1. 1. A photovoltaic inverter grid side inductor comprising: The magnetic core comprises an upper yoke and a lower yoke which are arranged in parallel, wherein a first middle column, a second middle column and a third middle column are respectively connected between the upper yoke and the lower yoke, and a first side column and a second side column are respectively connected between two ends of the upper yoke and the lower yoke; the cross sections of the upper yoke and the lower yoke are respectively half of the cross sections of the first middle column or the second middle column or the third middle column, and the cross sections of the first side column and the second side column are respectively half of the cross sections of the upper yoke or the lower yoke; A coil winding wound around the first center pillar, the second center pillar and the third center pillar, the coil winding being provided with an outgoing line; And the base is arranged on the upper yoke and the lower yoke and is used for isolating the upper yoke, the lower yoke and the coil winding.
2. 2. The photovoltaic inverter mesh side inductor of claim 1 wherein the magnetic core is provided as a ferro-silicon metal powder core.
3. 3. The photovoltaic inverter mesh side inductor of claim 1 wherein the first, second and third center posts are equally spaced along the length of the photovoltaic inverter mesh side inductor.
4. 4. The photovoltaic inverter mesh side inductor of claim 1 wherein the magnetic core is provided as an integrally formed structure.
5. 5. The photovoltaic inverter mesh side inductor of claim 1 wherein the upper and lower yoke surfaces are coated with an insulating epoxy layer.
6. 6. The grid-side inductor of claim 1, wherein the base is configured as an integrally molded structure of insulating material.
7. 7. The photovoltaic inverter grid-side inductor according to claim 1, wherein the base is provided with a fixing hole for fixing the photovoltaic inverter grid-side inductor.
8. 8. The photovoltaic inverter mesh side inductor of claim 1 wherein the coil windings are wound with enameled flat wire.

Description

Photovoltaic inverter net side inductance Technical Field The utility model relates to the technical field of inductors, in particular to a grid-side inductor of a photovoltaic inverter Background The grid-side inductor of the photovoltaic inverter is a key component between the output end of the inverter and a power grid, and is mainly used for filtering and inhibiting high-frequency noise, so that the current waveform output by the inverter is ensured to meet the grid-connected requirement. The sectional areas of the upper yoke and the lower yoke of the traditional photovoltaic inverter net side inductor are equal to or similar to the sectional area of the middle column, the heights of the upper yoke and the lower yoke are equal to or similar to the widths of the middle column, and the installation space of the photovoltaic inverter net side inductor is usually low, flat and long, namely, low in height, low in width and large in length, so that the installation space is in conflict with the structural design of the original photovoltaic inverter net side inductor, and cannot be realized. Disclosure of utility model The utility model mainly aims to provide a photovoltaic inverter network side inductor, which aims to solve the problem that the traditional photovoltaic inverter network side inductor cannot meet the requirements of low-height, low-width and long-length spaces. In order to achieve the above object, the present utility model provides a network side inductor of a photovoltaic inverter, comprising: The magnetic core comprises an upper yoke and a lower yoke which are arranged in parallel, wherein a first middle column, a second middle column and a third middle column are respectively connected between the upper yoke and the lower yoke, and a first side column and a second side column are respectively connected between two ends of the upper yoke and the lower yoke; the cross sections of the upper yoke and the lower yoke are respectively half of the cross sections of the first middle column or the second middle column or the third middle column, and the cross sections of the first side column and the second side column are respectively half of the cross sections of the upper yoke or the lower yoke; A coil winding wound around the first center pillar, the second center pillar and the third center pillar, the coil winding being provided with an outgoing line; And the base is arranged on the upper yoke and the lower yoke and is used for isolating the upper yoke, the lower yoke and the coil winding. Optionally, the magnetic core is provided as a ferro-silicon metal powder core. Optionally, the first middle column, the second middle column and the third middle column are distributed at equal intervals along the length direction of the grid-side inductor of the photovoltaic inverter. Optionally, the magnetic core is provided as an integrally formed structure. Optionally, the upper and lower yoke surfaces are coated with an insulating epoxy layer. Optionally, the base is provided as an integrally formed structure of an insulating material. Optionally, a fixing hole for fixing the grid-side inductor of the photovoltaic inverter is formed in the base. Optionally, the coil winding is formed by coiling an enamelled flat wire. The utility model has the beneficial effects that the structure of the existing photovoltaic inverter net side inductor is improved, the cross sections of the upper yoke, the lower yoke and the middle column are reasonably distributed, so that the whole height of the magnetic core is optimized, the cross sections of the upper yoke and the lower yoke are reduced to be half of the cross sections of the middle column on the premise of keeping the necessary inductance performance, the height of the magnetic core can be reduced, the requirement of low height of the photovoltaic inverter net side inductor installation space is better met, and the installation feasibility of the inductor in a limited space is improved. The cross section proportional relation between the upper yoke and the lower yoke and the middle column and the side columns ensures that the magnetic core is more compact in the width direction and can be better extended in the length direction, the length advantage of the installation space is fully utilized, the conflict with the shape of the installation space is avoided, the magnetic core can be more efficiently installed at the specific position of the photovoltaic inverter, and the space utilization rate is improved. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without i