CN106920648A

CN106920648A - A kind of multi-phase coupling inductor

Info

Publication number: CN106920648A
Application number: CN201511034291.7A
Authority: CN
Inventors: 杨玉岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2017-07-04

Abstract

A kind of multi-phase coupling inductor, is made up of two panels iron core and polyphase winding；It is characterized in that every iron core is constituted, three height of magnetic pole of the height less than described traditional " E " font iron core of increased two magnetic poles of institute by increasing by two magnetic poles between magnetic pole and two outside magnetic poles in the middle of one of traditional " E " font iron core；The polyphase winding is rotating around in increased two magnetic poles of institute；There is air gap between the corresponding magnetic pole of the two panels iron core.The beneficial effects of the invention are as follows：This kind of multi-phase coupling inductor is used in crisscross parallel Switching Power Supply, the symmetry of each phase inductance parameter can be improved, simplify the coupled structure of iron core, reduce core loss, reduce loop length, save copper material, reduce the copper loss of coil, reduce the output current and voltage ripple of power supply, reduce the output filter capacitor of power supply, reduce electromagnetic interference, improve the efficiency and response speed of power supply.

Description

A kind of multi-phase coupling inductor

Technical field

The present invention relates to a kind of inductor, the one kind in particular for multiphase interleaving Switching Power Supply is more Be coupled inductor.

Technical background

In recent years, for various electrical equipments provide the Switching Power Supply of electric energy just towards low-voltage, high current, The development of small volume, lightweight, efficiency high, slimming and integrated direction, including in computer Central processor (Central Processing Unit, CPU) and digital signal processor (Digital Signal Processing, DSP) etc. high accuracy, high speed microprocessor provide precision voltage source voltage adjustment mould Block, and rising in recent years be widely used in electric automobile, hybrid electric vehicle, uninterrupted power source, Quality of power supply regulation power supply, airplane power source, renewable energy power generation and superconducting energy storage etc. need energy double To the two-way switch power supply of flowing occasion, these Switching Power Supplies are by the topology using multiphase interleaving Structure, can increase output current and power, reduce the capacity of switching device, but wherein each phase energy storage The Integration Design of inductor is but a difficulty and challenging work, is seriously constrained staggeredly Paralleling switch power supply reduces volume, improves the realization of the targets such as efficiency and dynamic responding speed.

At present, known coupling inductor is made up of iron core and coil, and coil is wound in the magnetic pole of iron core. Symmetry that existing multi-phase coupling inductor has each phase inductance parameter is relatively low, iron core coupling knot The technical deficiency such as structure is complicated, the length of coil is more long, coil copper loss is larger.

The content of the invention

It is an object of the invention to overcome above-mentioned technical deficiency, there is provided a kind of each phase inductance parameter it is symmetrical Degree coupled structure higher, iron core is simple, loop length is minimum, save copper material, coil copper loss and Core loss is tried one's best and is reduced and multi-phase coupling inductor easy to implement.

The technical solution adopted for the present invention to solve the technical problems is：

A kind of multi-phase coupling inductor, is made up of two panels iron core and polyphase winding；It is characterized in that every Iron core is constituted, institute by increasing by two magnetic poles between three magnetic poles of traditional " E " font iron core Three height of magnetic pole of the height of increased two magnetic poles less than described tradition " E " font iron core； The polyphase winding is rotating around in increased two magnetic poles of institute；In the corresponding magnetic pole of the two panels iron core Between have air gap；Increased two magnetic poles preceding surface and the section parallel with the preceding surface be in square Shape, square, pentagon, hexagon, heptagon, octagon, nonagon, decagon, circle, The combination shape of semicircle, oval, rectangle and circle, rectangle and semicircular combination shape, rectangle and Oval combination shape；The iron core can using ferrite, silicon steel sheet, iron silicon, metal magnetic powder core, Amorphous, ultracrystallite or other ferrimagnets, the coil can using outsourcing insulation cylinder, Square-section, trapezoid cross section or lamelliform copper, aluminium, silver or other metal materials.

The beneficial effects of the invention are as follows：For the magnetic of each phase inductor in multiphase interleaving Switching Power Supply Coupling integration, can improve the symmetry of each phase inductance parameter, simplify the coupled structure of iron core, reduce Core loss, reduces loop length, saves copper material, reduces the copper loss of coil, reduces the defeated of power supply Go out electric current and voltage ripple, reduce the output filter capacitor of power supply, reduce electromagnetic interference, improve power supply Efficiency and response speed.

Illustrated with embodiment below in conjunction with accompanying drawing.

Brief description of the drawings

Fig. 1 is a kind of tomograph of two-way coupling inductor.

Fig. 2 is a kind of tomograph of the wherein a piece of iron core of two-way coupling inductor of Fig. 1.

Fig. 3 is a kind of tomograph of two-way coupling inductor of the embodiment two of Fig. 1.

Fig. 4 is a kind of tomograph of coupling inductor of the embodiment three of Fig. 1.

Fig. 5 is a kind of tomograph of coupling inductor of the example IV of Fig. 4.

Fig. 6 is the tomograph of a kind of single-phase inductor of the embodiment five of Fig. 1.

Fig. 7 is a kind of tomograph of two-way coupling inductor of the embodiment six of Fig. 6.

Fig. 8 is the tomograph of a kind of single-phase inductor of the embodiment seven of Fig. 1.

Fig. 9 is a kind of tomograph of two-way coupling inductor of the embodiment eight of Fig. 8.

In figure, 1- increases by two magnetic poles and constitutes between three magnetic poles of traditional " E " font iron core New iron core；2- coils；Air gap between the corresponding magnetic pole of 3- two panels iron core 1；4- iron cores 1 Yoke；5- constitutes the middle magnetic pole of tradition " E " font iron core of iron core 1；6- constitutes iron core 1 Tradition " E " font iron core both sides magnetic pole；7- increases between middle magnetic pole 5 and both sides magnetic pole 6 Two cuboid magnetic poles；The preceding surface of 8- cuboids magnetic pole 7；Remove in 9- Fig. 3 on iron core 1 All magnetic poles after formed " I " font iron core；In 10- Fig. 7,9 two it is placed side by side single-phase Gap between inductor.

Specific embodiment

Embodiment one：

Referring to the drawings 1 and 2, a kind of two-way coupling inductor, by the phase coil 2 of two panels iron core 1 and two Composition；It is characterized in that every iron core 1 is all by the He of middle magnetic pole 5 of traditional " E " font iron core Increase by two magnetic poles 7 between both sides magnetic pole 6 and constitute, the height of increased two magnetic poles 7 be less than The height of three magnetic poles 5,6 of described tradition " E " font iron core；Two phase coil 2 rotating around In increased two magnetic poles 7 of institute；The corresponding magnetic pole 5 of the two panels iron core 1, there is gas between 6,7 Gap 3；The preceding surface 8 of the magnetic pole 7 and the rectangular in cross-section parallel with preceding surface 8；The iron core 1 can use ferrite, silicon steel sheet, iron silicon, metal magnetic powder core, amorphous, ultracrystallite or other iron Magnetic material, the coil 2 can using the cylinder of outsourcing insulation, square-section, trapezoidal section Face or lamelliform copper, aluminium, silver or other metal materials.

Embodiment two：

Referring to the drawings 3, a kind of two-way coupling inductor, by the wherein a piece of iron core 1 in embodiment one All magnetic poles 5,6,7 remove, form " I " font iron core 9.

Embodiment three：

Referring to the drawings 4, a kind of coupling inductor increases by one on the iron core 1 in embodiment one Individual magnetic pole centre 5 and a magnetic pole 7, the coiling third phase coil 3 in the increased magnetic pole 7 of institute；According to This analogizes, and can form four phases, five phases, six mutually or even the multi-phase coupling inductor of 36 phases.

Example IV：

Referring to the drawings 5, a kind of coupling inductor, by the wherein a piece of iron core 1 in embodiment three All magnetic poles 5,6,7 remove, form " I " font iron core 9；The rest may be inferred, can form four The multi-phase coupling inductor of phase, five phases, six phases or even 36 phases.

Embodiment five：

Referring to the drawings 6, a kind of single-phase inductor removes the magnetic pole 5 in embodiment one, removes implementation A magnetic pole 7 in example one and the phase coil 2 being wound in the magnetic pole 7.

Embodiment six：

Referring to the drawings 7, a kind of two-way coupling inductor, by two single-phase inductors in embodiment five It is placed side by side in approximately the same plane, has gap 10 between described two single-phase inductors；Class according to this Push away, three-phase, four phases, five phases, six can be formed mutually or even the multi-phase coupling inductor of 36 phases； The rest may be inferred, by one or more two-way coupling inductors, three-phase coupling in embodiment one, three, five Close inductor and single-phase inductor is placed side by side in approximately the same plane, in each inductor placed Between have air gap 10, can be formed three-phase, four phases, five phases, six mutually so that 36 phases multiphase coupling Close inductor.

Embodiment seven：

Referring to the drawings 8, a kind of single-phase inductor, by the institute of the wherein a piece of iron core 1 in embodiment five There is magnetic pole 6,7 to remove, form " I " font iron core 9.

Embodiment eight：

Referring to the drawings 9, a kind of two-way coupling inductor, by two single-phase inductors in embodiment seven It is placed side by side in approximately the same plane, has gap 10 between described two single-phase inductors；Class according to this Push away, three-phase, four phases, five phases, six can be formed mutually or even the multi-phase coupling inductor of 36 phases； The rest may be inferred, by one or more two-way coupling inductors, three-phase coupling in embodiment two, four, seven Close inductor and single-phase inductor is placed side by side in approximately the same plane, in each inductor placed Between have air gap 10, can be formed three-phase, four phases, five phases, six mutually so that 36 phases multiphase coupling Close inductor.

Claims

1. a kind of multi-phase coupling inductor, is made up of two panels iron core and polyphase winding；It is characterized in that Every iron core is all by between magnetic poles on the outside of magnetic pole in the middle of of traditional " E " font iron core and two Increase by two magnetic poles and constitute, the height of increased two magnetic poles of institute is less than described traditional " E " font Three height of magnetic pole of iron core；The polyphase winding is rotating around in increased two magnetic poles of institute； There is air gap between the corresponding magnetic pole of the two panels iron core；Increased two magnetic poles be shaped as pros The assembly of body, cuboid, cylinder, semicylinder, Elliptic Cylinder, cuboid and semicylinder, Or cross section is pentagon, hexagon, heptagon, octagon, nonagon, decagonal cube； The iron core can using ferrite, silicon steel sheet, iron silicon, metal magnetic powder core, amorphous, ultracrystallite or Other ferrimagnets, the coil can be using cylinder, square-section, the ladder of outsourcing insulation Tee section or lamelliform copper, aluminium, silver or other metal materials；Described " multiphase " refers to three Positive integer phase within 16 phases.

2. a kind of multi-phase coupling inductor according to claim 1, it is characterised in that：Coupling The number of phases of inductor is two-phase；Every iron core be all by traditional " E " font iron core middle magnetic pole with Between the magnetic pole of both sides increase by two cuboid magnetic poles and constitute, increased two cuboid magnetic poles height Three height of magnetic pole of the degree less than described tradition " E " font iron core；Two phase coil rotating around In the increased two cuboid magnetic poles of institute.

3. a kind of two-way coupling inductor according to claim 2, it is characterised in that：By its In all magnetic poles of a piece of iron core 1 remove, form " I " font iron core.

4. a kind of coupling inductor according to claim 2, it is characterised in that：Every It is each on piece iron core to increase magnetic pole in the middle of, between the increased middle magnetic pole of institute and an outside magnetic pole A cuboid magnetic pole is further added by, the coiling third phase coil in the increased cuboid magnetic pole of institute；According to this Analogize, four phases, five phases, six can be formed mutually or even the multi-phase coupling inductor of 36 phases.

5. a kind of coupling inductor according to claim 4, it is characterised in that：By its In all magnetic poles of a piece of iron core remove, form " I " font iron core；The rest may be inferred, can be formed The multi-phase coupling inductor of four phases, five phases, six phases or even 36 phases.

6. a kind of single-phase inductor according to claim 2, it is characterised in that：By two panels iron The cuboid magnetic pole and the phase winding of the middle magnetic pole of core and coiling a wherein phase winding are removed.

7. a kind of two-way coupling inductor according to claim 6, it is characterised in that：By two Individual single-phase inductor is placed side by side in approximately the same plane, between having between described two single-phase inductors Gap；The rest may be inferred, can form three-phase, four phases, five phases, six mutually or even the multiphase coupling of 36 phases Close inductor；The rest may be inferred, by one or more two-way couplings electricity described in claim 2,4,6 Sensor, coupling inductor and single-phase inductor are placed side by side in approximately the same plane, are being placed Each inductor between have gap, can be formed three-phase, four phases, five phases, six mutually so that 36 The multi-phase coupling inductor of phase.

8. a kind of single-phase inductor according to claim 6, it is characterised in that：To wherein one All magnetic poles of piece iron core are removed, and form " I " font iron core.

9. a kind of two-way coupling inductor according to claim 8, it is characterised in that：By two Individual single-phase inductor is placed side by side in approximately the same plane, between having between described two single-phase inductors Gap；The rest may be inferred, can form three-phase, four phases, five phases, six mutually or even the multiphase coupling of 36 phases Close inductor；The rest may be inferred, by one or more the two-way coupling inductance in claim 3,5,8 Device, coupling inductor and single-phase inductor are placed side by side in approximately the same plane, what is placed There is gap between each inductor, three-phase, four phases, five phases, six can be formed mutually or even 36 phases Multi-phase coupling inductor.