CN2487082Y

CN2487082Y - Circular iron core winding

Info

Publication number: CN2487082Y
Application number: CN 01230708
Authority: CN
Inventors: 周靖国
Original assignee: Delta Electronics Inc
Current assignee: Taida Electronic Industry Co Ltd; Delta Electronics Inc
Priority date: 2001-07-20
Filing date: 2001-07-20
Publication date: 2002-04-17
Anticipated expiration: 2011-07-20

Abstract

The utility model which relates to an annular iron core winding comprises an annular iron core with a gap and the annular iron core is coated with an insulating layer; a first wire winding and a second wire winding that are wound on the annular iron core. The cathode dotted terminal of the first wire winding and the anode dotted terminal of the second wire winding are electrically connected together into a tap. The annular iron core winding group of the utility model has the advantages of small volume, light weight and being up to the IEC-1000-3-2harmonic current standard established by the international electric technology committee.

Description

The ring structure iron core winding

Technical field

The relevant a kind of ring structure iron core winding of the utility model, especially relevant a kind of ring structure iron core winding that is applied to power factor correction circuit.

Background technology

The used power supply of general electronic products mainly makes after the filtering of civil power (commercial power supply) employing diode rectification, uses after the change-over circuit conversion again.Though input voltage is sinusoidal wave, but it is impulse waveform that the circuit that rectifier diode and filtering capacitor are formed often causes input current, so the phenomenon that forms so-called harmonic current (harmonic current) and cause power factor (PF) (power factor) to reduce.The low-power factor means energy waste, therefore based on the environmental protection purpose, many countries are just studying and are working out rules, require to reduce current harmonics and improve power factor (PF), present then the standard of many industry standard current harmonicss and power factor (PF) is arranged, the IEC-1000-3-2 harmonic current standard that for example International Electrotechnical Commission worked out (harmonic current standard).

The existing mode of improving harmonic current mainly contains two kinds of active and induction types, and wherein the circuit design that adopts of induction type and element use very general than simple cheap.Induction type power factor correction circuit (inductor typepower factor correction circuit) mainly utilizes inductance can suppress the unexpected characteristic that changes of electric current and the resonance effect of inductance and electric capacity, reduce harmonic current, and then improve power factor (PF).Though the induction type power factor correction circuit is quite simple in design, but because it is to use low-frequency channel and must passes through big electric current, normally after EI sections core (EI Core) adds the gap, the row coiling forms again, this winding mode not only can cause serious leakage field situation, and has the huge shortcoming of winding volume.

Summary of the invention

A purpose of the present utility model is to propose a kind of little and lightweight ring structure iron core winding of volume, and it meets the IEC-1000-3-2 harmonic current standard that International Electrotechnical Commission works out.

For achieving the above object, ring structure iron core winding of the present utility model is characterized in, comprising: a ring structure iron core, and it has a gap and ring structure iron core is coated with an insulating barrier; Reach one first coiling and one second coiling, they are wound on the described ring structure iron core, and the end anodal of the same name of the negative pole end of the same name of wherein said first coiling and described second coiling electrically connects as a tap.

According to described ring structure iron core winding, wherein said insulating barrier is to be made by polyvinyl chloride.

According to described ring structure iron core winding, wherein said first coiling is doublet cord.

According to described ring structure iron core winding, wherein said second coiling is doublet cord.

According to described ring structure iron core winding, an adhesive plaster is further twined in wherein said first coiling and the described second coiling outside.

According to described ring structure iron core winding, it further comprises a bogey.

According to described ring structure iron core winding, wherein said bogey comprises a bracket and a bottom bracket.

According to described ring structure iron core winding, wherein said bracket comprises one first flat board, and the described first dull and stereotyped central authorities have one first opening and its basal surface central authorities from described first Open Side Down outstanding one first sleeve that forms.

According to described ring structure iron core winding, wherein said bottom bracket comprises one second flat board, and the described second dull and stereotyped central authorities have one second opening and its top surface central authorities project upwards formation one second sleeve from described second opening.

According to described ring structure iron core winding, wherein said bogey further comprises a Connection Element, to connect described bracket and described bottom bracket.

According to described ring structure iron core winding, wherein said Connection Element is the sub-assembly of screw and nut.

Understand the purpose of this utility model, characteristics and advantage for clearer, preferred embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the sketch that is applied to induction type power factor correction circuit of the present utility model;

Fig. 2 (a) to (d) is the schematic diagram of assembling situation that shows the winding construction of the utility model preferred embodiment;

Fig. 3 is the assembling schematic diagram of the bogey of ring structure iron core winding of the present utility model.

Embodiment

Please see Figure 1, it is the sketch that is applied to induction type power factor correction circuit of the present utility model, the input of AC power V (input terminal) X1, X2 connect one first inductance L 1 and a bridge rectifier (bridge rectifier circuit) BR respectively, the negative pole of first inductance L 1 end of the same name is connected to the end anodal of the same name and a switch S w of one second inductance L 2, and the negative pole of second inductance L 2 end of the same name links to each other with rectification circuit BR; The output of rectification circuit BR then further is connected to bus B US ⁺, BUS ^-, enter the change-over circuit (not shown) again, secondly BUS ⁺, BUS ^-Be connected with one first capacitor C 1 and one second capacitor C 2 of mutual series connection respectively, then be connected to switch S w between first capacitor C 1 and second capacitor C 2.

Above-mentioned induction type power factor correction circuit can meet IEC-1000-3-2 harmonic current standard, and utilize switch S w to switch to E point or F point, can reach the advantage that output voltage changes, for example if input voltage is 220 volts, then when switch S w switches to the E point, output voltage is 220 volts, and when switch S w switched to the F point, output voltage was 110 volts.

Winding construction of the present utility model is based on the conception of foregoing circuit, with one first coiling and one second coiling, be wound on the ring structure iron core, wherein the end anodal of the same name of the negative pole end of the same name of first coiling and second coiling forms and electrically connects as a tap (central tap).

Fig. 2 (a) to (d) is the assembling situation that shows the winding construction of the utility model preferred embodiment, and in Fig. 2 (a), iron core 21 is to be ring-like, has a gap g therebetween, in order to improve the electric current sensibility reciprocal; Fig. 2 (b) shows that the outside of iron core 21 coats an insulating barrier 22; Fig. 2 (c) demonstration is wound in one first coiling and one second coiling the situation of iron core 21, in the present embodiment, first coiling and second coiling are all doublet cord, and the end 241 anodal of the same name of the negative pole end 232 of the same name of first coiling and second coiling electrically connects as a tap 234, as for the end 231 anodal of the same name of first coiling and 242 conceptions of negative pole end of the same name of second coiling, be connected to power input X1 and rectification circuit input end Y1 respectively according to Fig. 1.In Fig. 2 (d), an adhesive plaster 25 is further twined in first coiling, 23 and second coiling, 24 outsides, so finishes ring structure iron core winding 2 of the present utility model.

Fig. 3 shows the bogey 3 of ring structure iron core winding 2 of the present utility model, and bogey 3 is to comprise a bracket 31 and a bottom bracket 32.Wherein bracket 31 comprises one first flat board 311, and its central authorities have one first opening 312 and its basal surface central authorities give prominence to formation one first sleeve 313 downwards from first opening 312; Bottom bracket 32 comprises one second flat board 321, and its central authorities have one second opening 322 and its top surface central authorities project upwards formation one second sleeve 323 from second opening 322; After first sleeve 313 of correspondence and second sleeve 323 are inserted in ring structure iron core winding 2 central authorities respectively and are in contact with one another, and make Connection Element pass through first opening 312 and second opening 322 again, can reach the effect that bracket 31 is connected with bottom bracket 32.In this example, Connection Element is to be the sub-assembly of screw 331 with nut 332.

Ring structure iron core winding of the present utility model can be applicable to power factor correction circuit, meets IEC-1000-3-2 harmonic current standard.Winding with 300 watts of power is an example, and the volume of ring structure iron core winding of the present utility model and weight only adopt about 30% of EI iron core winding for prior art.

Claims

1. a ring structure iron core winding is characterized in that, comprising:

One ring structure iron core, it has a gap and ring structure iron core is coated with an insulating barrier; And

One first coiling and one second coiling, they are wound on the described ring structure iron core, and the end anodal of the same name of the negative pole end of the same name of wherein said first coiling and described second coiling electrically connects as a tap.

2. ring structure iron core winding as claimed in claim 1 is characterized in that described insulating barrier is to be made by polyvinyl chloride.

3. ring structure iron core winding as claimed in claim 1 is characterized in that, described first coiling is doublet cord.

4. ring structure iron core winding as claimed in claim 1 is characterized in that, described second coiling is doublet cord.

5. ring structure iron core winding as claimed in claim 1 is characterized in that, an adhesive plaster is further twined in described first coiling and the described second coiling outside.

6. ring structure iron core winding as claimed in claim 1 is characterized in that, further comprises a bogey.

7. ring structure iron core winding as claimed in claim 6 is characterized in that, described bogey comprises a bracket and a bottom bracket.

8. ring structure iron core winding as claimed in claim 7 is characterized in that, described bracket comprises one first flat board, and the described first dull and stereotyped central authorities have one first opening, and its basal surface central authorities are from described first Open Side Down outstanding one first sleeve that forms.

9. ring structure iron core winding as claimed in claim 8 is characterized in that, described bottom bracket comprises one second flat board, and the described second dull and stereotyped central authorities have one second opening and its top surface central authorities project upwards formation one second sleeve from described second opening.

10. ring structure iron core winding as claimed in claim 7 is characterized in that described bogey further comprises a Connection Element, to connect described bracket and described bottom bracket.

11. ring structure iron core winding as claimed in claim 10 is characterized in that, described Connection Element is the sub-assembly of screw and nut.