CN2444301Y

CN2444301Y - Adjustable magnetic core reactor

Info

Publication number: CN2444301Y
Application number: CN 00252672
Authority: CN
Inventors: 李永健
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-30
Filing date: 2000-10-30
Publication date: 2001-08-22
Anticipated expiration: 2010-10-30

Abstract

The utility model relates to an adjustable iron core reactor. Two square iron cores are arranged in parallel to form a double square iron core. Two outer side pillar iron cores are both wound with working windings 2a and 2b, and a middle double pillar iron core is wound with a control winding 3. An insulating layer 4 is clamped between the two parallel square iron cores 1a and 1b to form an air gap, and the two square iron cores are respectively composed of magnetic gaps which are formed by that an upper half and a lower half are combined and the middle part of the upper half and the lower half are clamped with insulating layers 10a and 10b. The utility model can work under the condition of unsaturated state of the iron core, the linearity of the iron core reactor is good, the harmonic wave generated by the utility model is less than 2.5%, and no filter is required to be arranged.

Description

Adjustable iron core reactor

The utility model relates to adjustable iron core reactor.

Adjustable iron core reactor is mainly used in the static passive compensation device, and as the use in parallel with the capacitor group of adjustable inductive element, by adjusting inductance value, the capacity current that the networking is unnecessary is compensated.

Existing adjustable iron core reactor all is a kind of saturable reactors, and it is operated in the magnetic saturation state, promptly magnetic flux density get very high, reach the iron core magnetic saturation.The shortcoming that this Regulatable reactor exists is because it is operated in the magnetic saturation state, so produce a large amount of harmonic waves is arranged, and must dispose filter in the device during use, and the value of making is very high.

The purpose of this utility model provides a kind of simple in structure, is convenient to processing and manufacturing, and cost is low, the adjustable iron core reactor that performance is good.

The technical solution of the utility model by two its be set up in parallel the twoport font iron core of forming by the port type iron core that two halves up and down constitute respectively, being wound with the work winding respectively on two mixed lateral column iron cores of this twoport font iron core is main winding, two work winding tail ends are connected with tail end, be wound with the control winding and constitute on the twin columns iron core at this twoport font iron core middle part; For disconnecting the contact of the magnetic between two iron cores, between two port type iron cores arranged side by side, accompany insulating barrier and form air gap, for prevent magnetic core saturated, improve nonlinear characteristic, accompany insulating barrier between the iron core of two halves up and down of the port type iron core that each is constituted by two halves up and down respectively and form magnetic gap.

Operation principle of the present utility model is, by the characteristic of magnetization of iron core as can be known, when the change of magnetic field strength in the iron core, the relative permeability of iron core changes, the relative permeability characteristic curve of iron core as shown in Figure 1, by this curve as can be seen, the H value is at 0-H ₁In the scope, μ also increases when H increases, and the H value is from H ₁-∞, the μ value descends, the inductance L of coil=μ L ₀, L wherein ₀Be coil inductance value in a vacuum, change the μ value and just equal to have changed the L value.L=μ (SN ²/ l), wherein S--coil section is long-pending, the N--number of turn, the 1--length of magnetic path.The utility model iron core reactor makes the magnetic field intensity setting of iron core be operated in H by the setting of the work winding coil number of turn ₁, the magnetic flux density that reaches iron core is unsaturated, changes magnetic field intensity at H by the adjustment of control winding ₁-H ₂Between change, adjust relative permeability and change, it is adjustable to reach the iron core reactor reactance value.But because the nonlinear characteristic that has of iron core, the Regulatable reactor nonlinear distortion of single iron core is big, so with two iron core complementations, it is very little nonlinear distortion to be reduced to, and satisfies application requirements on the engineering.

It is operated in the undersaturated state of iron core the adjustable iron core reactor of the utility model, and promptly magnetic flux density is less, and the linearity of iron core reactor is good, and the harmonic wave of generation is less than 2.5%.So, if itself does not have harmonic source in the application system, then do not need to dispose filter, therefore can save filter, reduce expense greatly, as be used for static passive compensation device, can reduce the cost of reactive power compensator greatly.

The adjustable iron core reactor of the utility model, utilize the electric current of controlling in the winding to adjust the magnetic field intensity of iron core, adjust the relative permeability μ value of iron core, reach the adjustment inductance value, owing to be to use electric current adjustment, this is just for realizing that automation control provides the condition that makes things convenient for.Though the electric current in the control winding also is to regulate with controllable silicon,, employed controllable silicon is low-voltage, little electric current, therefore can not produce harmonic effects to system.

Fig. 1 is the relative permeability performance diagram of iron core.

Fig. 2 is the utility model structural representation.

Fig. 3 is the utility model structure assembly drawing.

Fig. 4 is the vertical view of Fig. 3.

Shown in accompanying drawing 2, this reality is novel to be by two its port type iron core 1a that constituted by two halves up and down respectively, 1b is set up in parallel the twoport font iron core of composition, on two mixed lateral column iron cores of this twoport font iron core, be wound with work winding 2a respectively, 2b, two work winding 2a, the tail end of 2b is connected with tail end, on the twin columns iron core at this twoport sections core middle part, be wound with control winding 3, at two port type iron core 1a arranged side by side, accompany insulating barrier 4 between the 1b and form air gaps, two port type iron core 1a that constitute by two halves up and down respectively, accompany insulating barrier 10a between the iron core of two halves up and down of 1b, 10b forms magnetic gap and constitutes.

The utility model has the folder device that above-mentioned two port type iron cores are fixed in the outer setting of iron core.Shown in accompanying

drawing

3,4 embodiment, on the upper surface of above-mentioned two port type iron cores and lower surface, be provided with folder 5, by drawing screw rod 6 to connect, two port type iron cores are fixedly clamped between each folder.

The adjustable iron core reactor of the utility model can be used in the static passive compensation device, and as the use in parallel with the capacitor group of adjustable inductive element, by adjusting inductance value, the capacity current that the networking is unnecessary is compensated.It is in parallel with it also to can be used for shunt capacitor compensation arrangement (TBB type), by manual adjustment reactor capacity, makes the power factor at networking reach predetermined value.Can also be used for the electric device that series reactor, arc suppression coil, current limiting reactor etc. use iron core reactor, and realize that inductance is adjustable.

Claims

1, adjustable iron core reactor, it is characterized in that by two its port type iron core (1a that constitute by two halves up and down respectively, 1b) be set up in parallel the twoport font iron core of composition, on two mixed lateral column iron cores of this twoport font iron core, be wound with work winding (2a respectively, 2b), two work winding (2a, tail end 2b) is connected with tail end, on the twin columns iron core at this twoport sections core middle part, be wound with control winding (3), at two port type iron core (1a arranged side by side, accompany insulating barrier (4) 1b) and form air gap, two port type iron core (1a that constitute by two halves up and down respectively, accompany insulating barrier (10a between the iron core of two halves up and down 1b), 10b) forming magnetic gap constitutes.

2, adjustable iron core reactor according to claim 1 is characterized in that having the folder device that above-mentioned two port type iron cores are fixed in the outer setting of iron core.

3, adjustable iron core reactor according to claim 1 and 2 is characterized in that being provided with folder (5) on the upper surface of above-mentioned iron core and lower surface, by drawing screw rod (6) to connect, two port type iron cores is fixedly clamped between its each folder.