三相二级共模电感
By designing the structure of a three-phase two-stage common-mode inductor, the problem of insufficient integration of inductors in three-phase circuits is solved, achieving efficient circuit connection and electromagnetic interference suppression, which is suitable for motor drive, power system and new energy fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 海来布曲
- Filing Date
- 2025-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing inductor structures have insufficient integration in fields such as motor drive and energy conversion, power system harmonic suppression, and energy storage and buffering, especially in three-phase circuits, and cannot meet the requirements of multi-phase common-mode inductors.
A three-phase two-stage common-mode inductor was designed, including a support base, a limiting isolation block, a frame housing, a toroidal core, winding units, and pin terminals. By evenly distributing the winding units on the support base and utilizing the structure of the limiting isolation block and the frame housing, a combination connection in the lateral and longitudinal directions is achieved to form a three-phase two-stage structure, avoiding the use of multiple inductors in series.
It improves the integration of inductors, is suitable for three-phase circuits, enhances circuit efficiency and dynamic response, reduces electromagnetic interference and high-frequency harmonic pollution, and is suitable for new energy fields such as photovoltaic inverters and energy storage systems.
Smart Images
Figure CN224519622U_ABST
Abstract
Claims
1. A three-phase two-stage common-mode inductor, characterized in that, It includes: The support base (1), limiting isolation blocks (2), skeleton housing (3), annular magnetic core (4), winding unit (5), and pin terminal (6) are provided. Several limiting isolation blocks (2) are evenly spaced on the support base (1), and the skeleton housing (3) is positioned above the support base (1) between several limiting isolation blocks (2). The annular magnetic core (4) is housed in the skeleton housing (3), and six sets of winding units (5) are evenly distributed outside the skeleton housing (3). Each two sets of winding units (5) arranged laterally are respectively arranged on both sides of the skeleton housing (3), and three sets of winding units (5) arranged longitudinally are arranged on the same side of the skeleton housing (3). Each two sets of winding units (5) arranged longitudinally are isolated by the limiting isolation blocks (2). Each set of winding units (5) is connected to a pin terminal (6) at both ends, and each pin terminal (6) is located below the support base (1).
2. The three-phase secondary common-mode inductor of claim 1, wherein: The support base (1) has a base body (101), an annular limiting block (102), an arrangement groove (103), a side guard block (104), a plurality of through holes (105), a plurality of terminal blocks (106), and a plurality of terminal isolation blocks (107).
3. The three-phase secondary common-mode inductor of claim 2, wherein: The annular limiting block (102) is provided on the seat (101), and the outer contour of the skeleton shell (3) is matched and connected with the annular limiting block (102); two arrangement slots (103) are provided in the annular limiting block (102), and three sets of winding units (5) are evenly spaced on each arrangement slot (103); a side guard block (104) is provided on each side of the seat (101), and a plurality of limiting isolation blocks (2) are connected to the inner side of each side guard block (104).
4. The three-phase secondary common-mode inductor of claim 3, wherein: A plurality of the insertion holes (105) are evenly distributed in the base (101), and a plurality of the terminal blocks (106) are evenly arranged below the base (101). Each pair of terminal blocks (106) arranged longitudinally is isolated by a terminal isolation block (107).
5. The three-phase secondary common-mode inductor of claim 4, wherein: The skeleton shell (3) has a first shell (301), a second shell (302) and an annular cavity (303); the first shell (301) and the second shell (302) are arranged opposite to each other, the annular cavity (303) is disposed between the first shell (301) and the second shell (302), and the annular magnetic core (4) is disposed in the annular cavity (303).
6. The three-phase secondary common-mode inductor of claim 5, wherein: Each of the winding units (5) is provided with a winding body (501), a first pin (502) and a second pin (503).
7. The three-phase secondary common-mode inductor of claim 6, wherein: The coiled body (501) is coiled around the outside of the skeleton shell (3). The first pin (502) and the second pin (503) are respectively connected to the two ends of the coiled body (501). Each first pin (502) and each second pin (503) are respectively inserted into one of the insertion holes (105).
8. The three-phase secondary common-mode inductor of claim 7, wherein: The pin terminal (6) has a first pin terminal (601), a first connecting piece (602), a second pin terminal (603), a second connecting piece (604), and a connecting sleeve (605).
9. The three-phase secondary common-mode inductor of claim 8, wherein: The first pin terminal (601) is connected to the first connecting piece (602), and the second pin terminal (603) is connected to the second connecting piece (604); each of the first connecting pieces (602) or each of the second connecting pieces (604) is connected to a connecting sleeve (605), and each of the connecting sleeves (605) is connected to a first pin (502) or a second pin (503).
10. The three-phase secondary common-mode inductor of claim 9, wherein: Each of the first pin terminal (601) or each of the second pin terminals (603) is respectively disposed in a terminal block (106).