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CN-224232471-U - AC three-phase common mode inductance

CN224232471UCN 224232471 UCN224232471 UCN 224232471UCN-224232471-U

Abstract

The utility model discloses an AC three-phase common mode inductor, which belongs to the technical field of inductance elements and comprises a supporting seat frame, a magnetic core shell, an annular magnetic core, winding groups, connecting sheets and connecting terminals, wherein the magnetic core shell is arranged on the supporting seat frame, the annular magnetic core is accommodated in the magnetic core shell, the three winding groups are uniformly distributed and wound outside the magnetic core shell, each winding group is provided with a first winding unit and a second winding unit, the first winding unit and the second winding unit are respectively arranged on two sides of the magnetic core shell in a relative mode, the connecting sheets and the connecting terminals are respectively arranged on the other side face of the supporting seat frame, one end part of each first winding unit is correspondingly connected with one end part of one second winding unit through one connecting sheet, and the other end part of each first winding unit and the other end part of each second winding unit are correspondingly connected with one connecting terminal. The utility model aims to solve the technical problem of improving the current tolerance capability of the three-phase common mode inductor.

Inventors

  • Hai Laibuqu

Assignees

  • 海来布曲

Dates

Publication Date
20260512
Application Date
20250421

Claims (10)

  1. 1. The AC three-phase common-mode inductor is characterized by comprising a supporting seat frame (1), a magnetic core shell (2), an annular magnetic core (3), winding groups (4), connecting pieces (5) and connecting terminals (6), wherein the magnetic core shell (2) is arranged on the supporting seat frame (1), the annular magnetic core (3) is contained in an inner cavity of the magnetic core shell (2), the three winding groups (4) are uniformly distributed and wound and connected outside the magnetic core shell (2), each winding group (4) is provided with a first winding unit (401) and a second winding unit (402), the first winding unit (401) and the second winding unit (402) are respectively arranged on two sides of the magnetic core shell (2) in an opposite mode, a plurality of connecting pieces (5) and a plurality of connecting terminals (6) are arranged on the other side face of the supporting seat frame (1), one end portion of each first winding unit (401) is correspondingly connected with one end portion of one second winding unit (402) through one connecting piece (5) and one end portion of the other winding unit (402) is correspondingly connected with one other end portion (401) of the other winding unit (6).
  2. 2. An AC three-phase common-mode inductor according to claim 1, characterized in that the supporting bracket (1) is provided with a supporting block (101), a receiving cavity (102), a clamping part (103), a separating block (104), a number of insertion holes (105) and a number of fixing mounting holes (106).
  3. 3. The AC three-phase common-mode inductor according to claim 2, wherein the accommodating cavity (102) is arranged on the supporting block (101), the magnetic core shell (2) is arranged in the accommodating cavity (102), the clamping part (103) is arranged in the accommodating cavity (102), and the clamping part (103) is connected with the side face of the magnetic core shell (2) in a clamping mode.
  4. 4. An AC three-phase common-mode inductor according to claim 3, wherein three of said dividing blocks (104) are disposed below said supporting block (101) with respect to said housing cavity (102), three of said dividing blocks (104) are disposed at uniform intervals, a plurality of said insertion holes (105) are disposed uniformly in said supporting block (101), and a plurality of said fixing and mounting holes (106) are disposed uniformly in the periphery of said supporting block (101).
  5. 5. The AC three-phase common-mode inductor according to claim 4, wherein the magnetic core housing (2) comprises a first housing (201), a second housing (202) and an annular accommodating cavity (203), the first housing (201) and the second housing (202) are arranged to be opened and closed relatively, the annular accommodating cavity (203) is arranged in the first housing (201) and the second housing (202), and the annular magnetic core (3) is arranged in the annular accommodating cavity (203).
  6. 6. The AC three-phase common-mode inductor as set forth in claim 5, wherein each of the first winding units (401) has a first winding portion (401 a), a first pin (401 b) and a second pin (401 c), the first winding portion (401 a) is wound around the outside of the core case (2), the first pin (401 b) and the second pin (401 c) are connected to two ends of the first winding portion (401 a), respectively, and the first pin (401 b) and the second pin (401 c) are respectively and correspondingly inserted into one of the insertion holes (105).
  7. 7. The AC three-phase common-mode inductor according to claim 6, wherein each of the second winding units (402) has a second winding portion (402 a), a third pin (402 b) and a fourth pin (402 c), the second winding portion (402 a) is wound around the other side of the core housing (2) with respect to the first winding portion (401 a), the third pin (402 b) and the fourth pin (402 c) are connected to two ends of the second winding portion (402 a), and the third pin (402 b) and the fourth pin (402 c) are respectively inserted into one of the insertion holes (105).
  8. 8. The three-phase AC common-mode inductor according to claim 7, wherein the connecting piece (5) has a U-shaped copper sheet structure, and the connecting piece (5) is connected to the first pin (401 b) and the third pin (402 b), respectively.
  9. 9. An AC three-phase common-mode inductance according to claim 8, characterized in that the connection terminal (6) has a pin connection piece (601), a socket end (602) and an auxiliary connection sleeve (603).
  10. 10. An AC three-phase common-mode inductor according to claim 9, wherein one end of the pin connection piece (601) is connected to the second pin (401 c) or the fourth pin (402 c), respectively, the other end of the pin connection piece (601) is connected to the socket end (602), and the auxiliary connection sleeve (603) is connected to the socket end (602) and the pin connection piece (601), respectively.

Description

AC three-phase common mode inductance Technical Field The utility model relates to the technical field of inductance elements, in particular to an AC three-phase common mode inductance. Background An inductive element, commonly referred to as an inductor, is a passive electronic element capable of storing magnetic field energy, and has the main characteristic of generating a magnetic field around it when a current flows through it, and of changing when the current changes, so that an electromotive force is generated across the inductor, which electromotive force acts to try to prevent the current from changing. The inductor also has a division between self inductance and mutual inductance, for example, self inductance is an electromagnetic induction phenomenon caused by the coil itself when the current in the coil changes. Mutual inductance is a phenomenon in which an induced electromotive force is generated in an adjacent coil when a current in one coil is changed between two or more coils. Self-inductance inductors and mutual inductance inductors have wide application in practical circuits. In general, inductance elements play an important role in electronic circuits, such as filtering, oscillation, delay, notch, etc., and are important elements that are often considered and used in the field of electronic engineering when designing circuits. Based on this, chinese patent CN212485061U discloses a three-phase common mode inductor, which comprises a base plate, an iron core and three coils, wherein the iron core comprises three winding portions arranged at intervals, any two winding portions are separated from each other by a connecting portion, the three coils are respectively wound on the corresponding winding portions and connected with the base plate, and the winding portions and the connecting portions enclose the iron core into a hexagonal structure. Because the structure can be used for completely matching the coil and the iron core, the diameter of the coil is reduced, the window utilization rate of the iron core is improved, and the use amount of copper wires or aluminum wires and the volume of the inductor are effectively reduced. Meanwhile, the structure can use automatic winding equipment to directly wind the coil on the iron core, so that the processing time of the coil and the iron core is reduced. However, the water-cooled three-phase common-mode inductor disclosed above has a technical problem of poor inductance although the manufacturing cost can be reduced. Specifically, in a three-phase circuit, a common mode interference signal refers to an interference signal that acts between a three-phase power supply and ground at the same time. The three-phase common mode inductor drains the common mode interference signal to the ground by providing a high impedance path, thereby achieving filtering and suppression of the common mode interference signal. Three-phase common mode inductors are used in industrial power environments, especially in the scenes of high current and high voltage. This is because industrial electricity is usually three-phase electricity and has a relatively high voltage (e.g., 380V), and therefore, an inductance element capable of withstanding a large current is required. The AC three-phase common mode inductor is a special inductance element which can be generally used for filtering and suppressing common mode interference in a three-phase circuit and is mainly characterized by having three groups of windings and being distinguished from common mode inductors of two groups of windings. Therefore, how to improve the current bearing capability of the AC three-phase common mode inductor and improve the inductance thereof is a technical problem to be solved in the present day. Disclosure of utility model Based on this, it is necessary to provide an AC three-phase common-mode inductance in view of the technical problem of how to improve the current withstand capability of the three-phase common-mode inductance. The AC three-phase common mode inductor comprises a supporting seat frame, a magnetic core shell, an annular magnetic core, winding groups, connecting sheets and connecting terminals, wherein the magnetic core shell is arranged on the supporting seat frame, the annular magnetic core is accommodated in an inner cavity of the magnetic core shell, the winding groups are uniformly distributed and wound outside the magnetic core shell, each winding group is provided with a first winding unit and a second winding unit, the first winding unit and the second winding unit are respectively and oppositely arranged on two sides of the magnetic core shell, the connecting sheets and the connecting terminals are respectively arranged on the other side face of the supporting seat frame relative to the magnetic core shell, one end part of each first winding unit is correspondingly connected with one end part of each second winding unit through one connecting sheet, and the other end part o