CN201054296Y

CN201054296Y - Transformer magnetic core and its induction leakage adjustable transformer

Info

Publication number: CN201054296Y
Application number: CNU2007200797052U
Authority: CN
Inventors: 冯志刚
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2007-05-28
Filing date: 2007-05-28
Publication date: 2008-04-30
Anticipated expiration: 2017-05-28

Abstract

The utility model relates to a transformer, in particular to a transformer magnetic core. Aiming at solving the disadvantages of the prior art that the shape fixing and the parameter adjustment of transformer magnetic core are difficult, the utility model discloses a parameter adjustable transformer magnetic core and a transformer formed by the parameter adjustable transformer magnetic core. The transformer magnetic core of the utility model comprises four sides basically presenting a rectangle, one side of the four sides is a movable side, and the movable side can parallelly move in the rectangle relative to the opposite side. The leakage inductance adjustable transformer of the utility model is formed by coils configured on the movable side of the transformer magnetic core and the opposite side thereof. The utility model has the advantages that a movable side is arranged in the transformer magnetic core, thereby being able to adjust the parameter of the magnetic core conveniently, being especially suitable for being taken as the magnetic core for the leakage inductance adjustable transformer, adjusting the leakage inductance value of the transformer conveniently, accurately and rapidly, and improving the product quality and the working efficiency.

Description

The leakage inductance adjustable transformer of magnetic core of transformer and formation thereof

Technical field

The utility model relates to transformer, particularly magnetic core of transformer.

Background technology

The main application of transformer is conversion alternating voltage, electric current and impedance.Transformer generally is made of magnetic core of transformer and induction coil, and the transformer induction coil generally has two or more windings, and the winding that wherein connects power supply is primary coil, and remaining winding is secondary coil.When being connected with alternating current in the elementary coil, just produce alternating flux in the magnetic core of transformer, in the secondary coil with regard to thoughts voltage (or electric current).According to the condition of transformer work, need sometimes transformer leakage inductance is adjusted, particularly be operated in the transformer of resonance condition, its leakage inductance value need be adjusted to suitable size, so that cooperate with circuit parameter, produces resonance.Because the leakage inductance value of transformer does not almost have computing formula accurately, and the core shapes of transformer is fixed, adjust the leakage inductance parameter of transformer, prior art mainly is technique for coiling and the coil shape that changes primary coil and/or secondary coil, adjusts through repetition test.Guaranteeing under the certain situation of the number of turn that this adjustment is tested and still is difficult to the effect that reaches desirable after the repeated multiple times often.

The utility model content

Technical problem to be solved in the utility model is exactly the magnetic core of transformer fixed in shape at prior art, and the shortcoming of difficulty of parameter tuning provides the transformer of adjustable magnetic core of transformer of a kind of parameter and formation thereof.

The utility model solve the technical problem, and the technical scheme of employing is a kind of magnetic core of transformer, comprise 4 limits that become rectangle basically, it is characterized in that, in described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle.

The transformer that leakage inductance is adjustable comprises magnetic core of transformer, primary coil and secondary coil; Described magnetic core of transformer is made of 4 limits that become rectangle basically, it is characterized in that, in described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle; Described primary coil and secondary coil are enclosed within respectively on described active edges and the opposite side thereof.

The beneficial effects of the utility model are in magnetic core of transformer, active edges to be set, can adjust the parameter of magnetic core easily, be particularly suitable for the adjustable transformer of leakage inductance and make magnetic core, can make things convenient for, adjust accurately and quickly the leakage inductance value of transformer, improved product quality and operating efficiency.

Description of drawings

Fig. 1 is the shape schematic diagram of embodiment 1 magnetic core of transformer;

Fig. 2 is the structural representation of magnetic core of transformer shown in Figure 1;

Fig. 3 is the leakage inductance adjustable transformer structural representation that magnetic core of transformer shown in Figure 1 constitutes;

Fig. 4 is embodiment 2 magnetic core of transformer schematic diagrames.

Embodiment

The utility model adopts active edges is set in magnetic core of transformer, the leakage inductance value of the parameter, particularly transformer of the position change transformer by regulating active edges.

Magnetic core of transformer of the present utility model comprises 4 limits that become rectangle basically, and in described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle;

Further, described opposite side is fixed on the adjacent side of described active edges;

Further, described opposite side constitutes by 2 sections, and they are separately fixed on two adjacent sides of described active edges;

Concrete, described magnetic core of transformer is made of soft magnetic material.

The transformer that leakage inductance of the present utility model is adjustable comprises magnetic core of transformer, primary coil and secondary coil; Described magnetic core of transformer is made of 4 limits that become rectangle basically; In described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle; Described primary coil and secondary coil are enclosed within respectively on described active edges and the opposite side thereof;

Concrete, described primary coil is enclosed within on the described active edges;

Further, described magnetic core of transformer is made of soft magnetic material.

Embodiment 1

Referring to Fig. 1 Fig. 2 and Fig. 3.Among Fig. 1, active edges 1, opposite side 3, adjacent side 2, adjacent side 4 constitute rectangle or become the rectangle magnetic core of transformer basically.Opposite side 3 is made of for identical with shape 2 sections size, and one section is connected and fixed with adjacent side 3, and another section and adjacent side 4 are connected and fixed.Active edges 1 can move along the direction of arrow between adjacent side 2 and adjacent side 4 among Fig. 1.When active edges 1 and opposite side 3 put coil, just constitute a transformer that leakage inductance is adjustable, as shown in Figure 3.When active edges 1 and the coil that upward overlaps thereof moved, the leakage inductance value of transformer changed thereupon, and moving of active edges can not change magnetic gap length in the magnetic loop.When leakage inductance is adjusted to suitable value, fix with the epoxy resin embedding.When this routine magnetic core of transformer constitutes transformer, primary coil can be enclosed within on the active edges 1, secondary coil is enclosed within on the opposite side 3, and primary and secondary coil reversing of position also can constitute the adjustable transformer of leakage inductance.10 is primary coil among Fig. 3, and 30 is secondary coil.This routine magnetic transformer core material is selected soft magnetic material for use.

Fig. 2 is the structural representation that this routine magnetic core of transformer disassembles.As can be seen, in fact magnetic core of transformer has 3: active edges 1 is an independently column type magnetic core, and the rectangle among Fig. 2 a is the front view of active edges 1, and circle is its vertical view.Other two is shape, big or small identical " L " type magnetic core, and 2 sections magnetic cores that constitute opposite side 3 are column type.See Fig. 2 b and Fig. 2 c, Fig. 2 b is the front view of " L " type magnetic core, and Fig. 2 c is its left view.

The characteristics of this routine magnetic core of transformer structure are that the magnetic core number of molds is few, only needs the mould of two kinds of shapes, just can generate magnetic core of transformer.

Embodiment 2

See Fig. 4.This routine magnetic core of transformer is also formed by 3, and active edges 1, opposite side 3 adjacent sides 2 and adjacent side 4 are four-prism.Opposite side 3 is connected and fixed with adjacent side 2, constitutes " L " type magnetic core, and active edges 1 and adjacent side 4 are two four-prism magnetic cores.This routine magnetic core of transformer if active edges 1 and adjacent side 4 shape sizes are identical, then only needs the mould of two kinds of shapes, otherwise needs the mould of 3 kinds of shapes, can produce.

Claims

1. magnetic core of transformer comprises 4 limits that become rectangle basically, it is characterized in that, in described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle.

2. magnetic core of transformer according to claim 1 is characterized in that described opposite side is fixed on the adjacent side of described active edges.

3. magnetic core of transformer according to claim 2 is characterized in that, described opposite side constitutes by 2 sections, and they are separately fixed on two adjacent sides of described active edges.

4. according to claim 1,2 or 3 described magnetic core of transformers, it is characterized in that described magnetic core of transformer is made of soft magnetic material.

5. the adjustable transformer of leakage inductance comprises magnetic core of transformer, primary coil and secondary coil; Described magnetic core of transformer is made of 4 limits that become rectangle basically, it is characterized in that, in described 4 limits, it is active edges that a limit is arranged, and described active edges can be relative to its opposite side parallel moving in described rectangle; Described primary coil and secondary coil are enclosed within respectively on described active edges and the opposite side thereof.

6. leakage inductance adjustable transformer according to claim 5 is characterized in that described primary coil is enclosed within on the described active edges.

7. according to claim 5 or 6 described leakage inductance adjustable transformers, it is characterized in that described opposite side is fixed on the adjacent side of described active edges.

8. leakage inductance adjustable transformer according to claim 7 is characterized in that, described opposite side constitutes by 2 sections, and they are separately fixed on two adjacent sides of described active edges.

9. leakage inductance adjustable transformer according to claim 5 is characterized in that described magnetic core of transformer is made of soft magnetic material.