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CN-224217338-U - Novel magnetic integrated inductor

CN224217338UCN 224217338 UCN224217338 UCN 224217338UCN-224217338-U

Abstract

The utility model discloses a novel magnetic integrated inductor, which is characterized in that at least three magnetic yokes which are sequentially arranged, coil windings sleeved on each magnetic yoke, a first side column for installing two adjacent magnetic yokes and a second side column which is parallel to the first side column are arranged, a first coil on an upper magnetic core column and a second coil on a lower magnetic core column can share a winding mould, the types of the moulds are reduced, leading-out ends on the same side of the first coil and the second coil are directly connected in parallel, the process difficulty of serially connecting and winding the coils is reduced, the two coils are connected in parallel to share current, and the current of a single coil is only one half of the total current, so that a wire rod with a small half of cross section area can be adopted for winding the coils, the turning radius required in winding the coils is small, the size of the coils is reduced, and the volume of the inductor is reduced.

Inventors

  • SHU JUNQING
  • CUI WANHENG

Assignees

  • 广东省洛仑兹技术股份有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (9)

  1. 1. The novel magnetic integrated inductor is characterized by comprising at least three magnetic yokes, coil windings, first side posts and second side posts, wherein the magnetic yokes are sequentially arranged, the coil windings are sleeved on each magnetic yoke, the first side posts are used for installing two adjacent magnetic yokes, and the second side posts are arranged in parallel with the first side posts; The magnetic yoke comprises an upper magnetic core column and a lower magnetic core column which are arranged in parallel, the coil winding comprises a first coil wound on the upper magnetic core column and a second coil wound on the lower magnetic core column, the leading-out end of the first coil is connected with the leading-out end of the second coil in parallel on the same side, one end of the upper magnetic core column is vertically connected with one end of the lower magnetic core column, and the other end of the upper magnetic core column is vertically connected with the second side column.
  2. 2. The novel magnetically integrated inductor of claim 1, wherein when the number of the first side leg and the second side leg is two, the lead-out input current of the coil winding forms a magnetic flux path of differential mode current or a magnetic flux path of zero sequence current.
  3. 3. The novel magnetically integrated inductor of claim 2, wherein the upper core leg comprises at least two removably connected first cores.
  4. 4. The novel magnetically integrated inductor of claim 2, wherein the lower core leg comprises at least two removably connected second cores.
  5. 5. The novel magnetically integrated inductor of claim 2, wherein the first leg includes at least two third magnetic cores removably connected.
  6. 6. The novel magnetically integrated inductor of claim 2, wherein the second leg includes at least two removably connected fourth magnetic cores.
  7. 7. The novel magnetically integrated inductor of claim 1, wherein the first leg and the second leg are provided with at least one first notch on one side.
  8. 8. The novel magnetically integrated inductor of claim 1, wherein at least one second notch is disposed on each of two sides of the first side leg and the second side leg.
  9. 9. The novel magnetically integrated inductor of claim 1, wherein the upper and lower core legs are circular or elliptical in shape.

Description

Novel magnetic integrated inductor Technical Field The utility model belongs to the technical field of power electronics, and particularly relates to a novel magnetic integrated inductor. Background Currently, converter products such as PWM rectifiers, photovoltaic inverters, and new energy storage converters generally require a filter inductor to filter out harmonics. In the existing scheme, although the filter inductor in the single-phase structure form can adapt to the working condition of an unbalanced power grid, each phase is required to be provided with a single-phase filter inductor, so that the number of the filter inductors is large, the whole size is large, the cost is high, and the industrial development requirements of small size, low cost and light weight cannot be met. In this regard, a three-phase three-pole filter inductor, a single-phase filter inductor or an improved magnetic integrated inductor is generally adopted, for example, application No. 202321198999.6 discloses a magnetic core structure and a magnetic integrated inductor, as shown in fig. 1, the magnetic core structure and the magnetic integrated inductor require at least three magnetic yokes which are parallel to each other and are sequentially arranged, wherein two magnetic yokes are layered through at least two middle poles, an inductance coil is sleeved on each middle pole, and in addition, the relative magnetic permeability of the magnetic yokes is specified to be larger than that of the middle poles. Although the improved magnetic integrated inductor can better solve the defects of three-phase three-column inductors and single-phase inductors, the winding of the traditional magnetic integrated inductor is wound on one magnetic core column and then is connected to the other magnetic core column, so that two coils on the two magnetic core columns are in a series connection mode, the processing difficulty of the coils is high, and particularly, the sectional area of the coil of the high-power inductor is large and the coil is thicker, so that the winding difficulty of the coil of the continuous winding process is higher, the production efficiency of the inductor is influenced, and the coil is inconvenient for mass production. Disclosure of utility model Aiming at the problems, the utility model provides a novel magnetic integrated inductor which can adapt to the working condition of an unbalanced power grid and can solve the problems of high cost and large volume caused by adopting a single-phase filter inductor. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a novel magnetic integrated inductor, which comprises at least three magnetic yokes, coil windings, first side posts and second side posts, wherein the magnetic yokes are sequentially arranged, the coil windings are sleeved on each magnetic yoke, the first side posts are used for installing two adjacent magnetic yokes, and the second side posts are arranged in parallel with the first side posts; The magnetic yoke comprises an upper magnetic core column and a lower magnetic core column which are arranged in parallel, the coil winding comprises a first coil wound on the upper magnetic core column and a second coil wound on the lower magnetic core column, the leading-out end of the first coil is connected with the leading-out end of the second coil in parallel on the same side, one end of the upper magnetic core column is vertically connected with one end of the lower magnetic core column, and the other end of the upper magnetic core column is vertically connected with the second side column. As a preferable aspect of the above-mentioned technical solution, when the number of the first side leg and the second side leg is two, the input current at the lead-out end of the coil winding forms a magnetic flux path of differential mode current or a magnetic flux path of zero sequence current. Preferably, the upper magnetic core column comprises at least two first magnetic cores which are detachably connected. Preferably, the lower magnetic core leg comprises at least two second magnetic cores detachably connected. Preferably, the first side column includes at least two third magnetic cores detachably connected. Preferably, the second side column includes at least two detachably connected fourth magnetic cores. Preferably, in the above technical solution, at least one first notch is provided on one side edge of the first side column and one side edge of the second side column. Preferably, in the above technical solution, at least one second notch is provided on one side edge of the first side column and one side edge of the second side column. Preferably, the shape of the upper core leg and the lower core leg is a circular shape or an elliptical shape. Compared with the prior art, the utility model has the beneficial effects that: Through setting up at least three yoke that arrange in proper order,