CN2263390Y - Voltage stablilzing transformer - Google Patents
Voltage stablilzing transformer Download PDFInfo
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- CN2263390Y CN2263390Y CN 96210757 CN96210757U CN2263390Y CN 2263390 Y CN2263390 Y CN 2263390Y CN 96210757 CN96210757 CN 96210757 CN 96210757 U CN96210757 U CN 96210757U CN 2263390 Y CN2263390 Y CN 2263390Y
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- CN
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- Prior art keywords
- phase
- transformer
- winding
- voltage
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Abstract
The utility model relates to a voltage regulation transformer. Compared with the existing transformer, the utility model can realize on-load voltage regulation and can solve the shortcomings of the existing transformer with large component capacity, complicated structure and high cost. Two groups of original auxiliary side three-phase windings are separately wound on an iron core of an independent three-phase magnetic circuit to form a main transformer and a voltage regulating transformer. The primary side of the three-phase winding is respectively in series connection with isonym ends; secondary phase shift is in opposite series connection with the isonym ends; the phase difference each phase of the main windings and the regulating windings is 60 DEG; the both ends of a voltage regulating secondary winding is in parallel connection with a phase shifting capacitance. The utility model can realize reactive compensation and can carry out on-load voltage regulation for a capacitance with small volume under low pressure. The utility model has the advantages of voltage regulation, simple structure and low cost.
Description
The utility model belongs to a kind of voltage regulation type transformer.
Present supply power voltage is regulated main the employing and the transformer of tap shunting switch is set or two kinds of methods of pressurizer are set in addition at elementary high-pressure side, the former need break the high-pressure side power supply could reversing switch, operation inconvenience, latter's complex structure, the cost height, also have at step down side installing compensation condenser and improve magnitude of voltage, capacitor is to be connected in parallel on the load two ends in this case, and capacity required is very big.The voltage regulating mode that 95 year second phase of " transformer " magazine discloses a kind of unification of core type homophony altogether single-phase electricfurnace transformer certain advantage is arranged, but it utilizes the magnetic saturation mode pressure regulation of external direct current power supply that certain limitation is also arranged.
The utility model aim to provide a kind of simple in structure, easy to operate, to the less demanding voltage regulation type transformer that can improve regulated output voltage of pressure regulation element volume.
The technical scheme that realizes above-mentioned purpose is: this transformer comprises by two groups of former secondary three phase windings respectively on two groups of iron cores that have independent or relatively independent three-phase magnetic circuit separately and the three-phase main transformer and the three-phase regulating transformer that constitute is characterized in that: the former limit of described main transformer winding WA
1, WB
1, WC
1Three ends of the same name connect three phase mains A, B, C end respectively, the other end respectively with the former limit three phase winding WF of voltage regulating transformer
1, WF
2, WF
3End of the same name forward connects, the former limit three phase winding WF of this voltage regulating transformer
1, WF
2, WF
3Star or triangle connect, voltage regulating transformer secondary three phase winding Wf
1, Wf
2, Wf
3End of the same name is connected into star mutually, its other end or tap terminals respectively with main transformer three-phase auxiliary winding Wa
2, Wb
2, Wc
2Successively commutation and with the rightabout end series connection of the same name of itself and the corresponding winding in former limit, the main transformer three-phase secondary winding other end then is respectively the three-phase voltage output, is parallel with shift capacitor C respectively through three low-voltage compensation ends between described voltage regulating transformer auxiliary winding two ends or pressure regulation auxiliary winding Y-connection point and the main transformer auxiliary winding tap of connecting with its phase shift
1, C
2, C
3
Operation principle of the present utility model is: lay respectively at the master on two groups of independences or the relatively independent magnetic circuit iron core, transfer the homophase of two groups of primary coils or the former limit of the integrant three-phase of the polyphone winding of equivalent homophase, two former limit windings of every phase bear certain magnitude of voltage respectively, when the former limit of pressure regulation winding is connected into star, the commutation of two groups of three-phase secondary windings and make the induced potential that constitutes every two coils mutually differ 60 ° of angles with the differential concatenation of the opposite end of the same name of the corresponding winding in former limit, because these two coils are respectively on two independences or relatively independent magnetic circuit iron core, when two series connection windings flow through same load current, the master certainly will will be caused, transfer the variation of winding voltage phase place, after particularly incorporating shift capacitor into, not only improved power factor, and when pressure regulation auxiliary winding phase place is 60 ° of leading main transformer secondary windings, shift capacitor in parallel promptly can impel the induced potential of pressure regulation auxiliary winding to shift to the hysteresis direction, promptly dwindle phase difference with main transformer auxiliary winding induced potential, thereby two auxiliary winding are shifted to linear relation from the complications relation that differs 60 ° of electromotive force phase places, finally reach the purpose of rising secondary voltage.When the pressure regulation primary winding is connected into triangle, then leading its series connection main transformer winding 90 degree electrical degrees of the electromotive force phase place of its secondary winding, under the load and the building-out capacitor function of current, impel the electromotive force phase place of two series connection windings to shift to linear relation from the tortuous relation of an angle of 90 degrees.If specified unloaded secondary voltage is chosen in deep low gear, the then available number that increases shunt capacitance successively improves output voltage.When changing former avris three-phase power supply phase sequence, voltage adjustment characteristic will be opposite, promptly increase shift capacitor in parallel after, output voltage then reduces.A kind of voltage regulating mode is more reasonable before general the employing.
The utility model can carry out the on-load voltage regulation of low-pressure side output voltage when carrying out reactive power compensation, and only needs to reach the purpose of regulated output voltage with the magnitude of voltage adjustment that can finish than the electric capacity of low capacity in a big way.Easy to operate, simple in structure, cost is low, and simultaneously this transformer can reduce zero load and reactive current, when breaking down and during short circuit, output voltage descends significantly, has certain self-protection function.When the utility model is used for electric furnace, its distinctive high impedance voltage output characteristics will present very big advantage; It also can replace such as the required low pressure starting equipment of the kind equipment of irrigation and drainage.The utility model is best suited for medium-sized power transformer and furnace transformer.
Description of drawings:
Fig. 1, the utility model embodiment 1 structural representation
Fig. 2, the utility model embodiment 2 structural representations
Embodiment 1
Two groups of former secondary three phase windings of this example constitute three-phase main transformer and three-phase regulating transformer respectively on relatively independent separately three-phase magnetic circuit iron core, two groups of three-phase stem formula conjugation unshakable in one's determination assembly sphere of movements for the elephants shape structure.This structure can reduce material and reduce device height degree, and its winding connection is seen Fig. 1.
The former limit of main transformer winding WA
1, WB
1, WC
1End of the same name meets three phase mains high-pressure side A, B, C respectively, the other end respectively with the former limit of three-phase regulating transformer winding WF
1, WF
2, WF
3End of the same name is forward connected, WF
1, WF
2, WF
3The other end is connected to star, voltage regulating transformer secondary winding Wf
1, Wf
2, Wf
3Three ends of the same name are connected to star, the secondary winding Wa that the other end is corresponding with the three-phase main transformer respectively
2, Wb
2, Wc
2Successively phase shift and and with the rightabout end of the same name series connection of its corresponding winding in former limit, Wa
2, Wb
2, Wc
2The other end is three outputs of the same name.At three-phase regulating transformer auxiliary winding Wf
1, Wf
2, Wf
3Y-connection point separately and the main transformer auxiliary winding Wc that connects with its phase shift respectively
2, Wa
2, Wb
2Centre tap between be parallel with shift capacitor C respectively through three low-voltage compensation ends
1, C
2, C
3
Embodiment 2
Respectively on two groups of iron cores that have independent three-phase magnetic circuit separately and constitute three-phase main transformer and three-phase regulating transformer, winding connection is seen Fig. 2 to present embodiment by two groups of former secondary three phase windings.This example respectively with the former limit of main transformer winding WA
1, WB
1, WC
1The former limit of the voltage regulating transformer of end series aiding connection of the same name winding WF
1, WF
2, WF
3Be connected into triangle.Three-phase regulating transformer secondary winding Wf
1, Wf
2, Wf
3Centre tap respectively with corresponding main transformer secondary winding Wc
2, Wa
2, Wb
2Phase shift and and with the rightabout end of the same name series connection of its corresponding winding in former limit, 90 ° in the main transformer secondary winding electromotive force phase place of all leading this phase series connection with it of each voltage regulating transformer secondary winding, the two ends of boosting at each voltage regulating transformer secondary winding are parallel with shift capacitor C respectively
1, C
2, C
3
C
1, C
2, C
3Can form by switch in parallel by a plurality of electric capacity respectively, change the master, transfer the phase angle between the winding thereby can change capacitance, thereby change its output voltage by low-pressure side.
Draw centre tap or make the shift capacitor link and all be provided with at main transformer secondary winding in above-mentioned two examples for improving the compensation terminal voltage at the voltage regulating transformer secondary winding increase tapping that boosts.
Claims (2)
1, voltage regulation type transformer, this transformer comprise by two groups of former secondary three phase windings respectively on two groups of iron cores that have independent or relatively independent three-phase magnetic circuit separately and the three-phase main transformer and the three-phase regulating transformer that constitute it is characterized in that: the former limit of described main transformer winding (WA
1), (WB
1), (WC
1) three ends of the same name connect three phase mains (A), (B), (C) end respectively, the other end respectively with the former limit three phase winding (WF of voltage regulating transformer
1), (WF
2), (WF
3) end of the same name forward connects the former limit three phase winding (WF of this voltage regulating transformer
1), (WF
2), (WF
3) star or triangle connection, voltage regulating transformer secondary three phase winding (Wf
1), (Wf
2), (Wf
3) end of the same name is connected into star mutually, its other end or tap terminals respectively with main transformer three-phase auxiliary winding (Wa
2), (Wb
2), (Wc
2) successively commutation and with the rightabout end series connection of the same name of itself and the corresponding winding in former limit, the main transformer three-phase secondary winding other end then is respectively the three-phase voltage output, is parallel with shift capacitor (C respectively through three low-voltage compensation ends between described voltage regulating transformer auxiliary winding two ends or pressure regulation auxiliary winding Y-connection point and the main transformer auxiliary winding tap of connecting with its phase shift
1), (C
2), (C
3).
2, voltage regulation type transformer according to claim 1 is characterized in that, described two groups of relatively independent separately three-phase magnetic circuit iron cores are that two groups of three-phase stem formulas conjugation unshakable in one's determination assemblies sphere of movements for the elephants shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210757 CN2263390Y (en) | 1996-05-06 | 1996-05-06 | Voltage stablilzing transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210757 CN2263390Y (en) | 1996-05-06 | 1996-05-06 | Voltage stablilzing transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2263390Y true CN2263390Y (en) | 1997-09-24 |
Family
ID=33893927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96210757 Expired - Fee Related CN2263390Y (en) | 1996-05-06 | 1996-05-06 | Voltage stablilzing transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2263390Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184774A (en) * | 2011-01-25 | 2011-09-14 | 张家港市沙洲特种变压器制造有限公司 | Power-saving transformer |
| CN103560679A (en) * | 2013-10-13 | 2014-02-05 | 刘建平 | Pulse-width modulation type high-power alternating current voltage stabilizer |
| CN103699162A (en) * | 2013-11-30 | 2014-04-02 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
| CN104184335A (en) * | 2014-09-11 | 2014-12-03 | 山东大学 | Multifunctional transformer with double transformer bodies connected in series |
-
1996
- 1996-05-06 CN CN 96210757 patent/CN2263390Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184774A (en) * | 2011-01-25 | 2011-09-14 | 张家港市沙洲特种变压器制造有限公司 | Power-saving transformer |
| CN103560679A (en) * | 2013-10-13 | 2014-02-05 | 刘建平 | Pulse-width modulation type high-power alternating current voltage stabilizer |
| CN103560679B (en) * | 2013-10-13 | 2015-11-25 | 刘建平 | PWM-type high power AC stable-pressure device |
| CN103699162A (en) * | 2013-11-30 | 2014-04-02 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
| CN103699162B (en) * | 2013-11-30 | 2015-05-20 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
| CN104184335A (en) * | 2014-09-11 | 2014-12-03 | 山东大学 | Multifunctional transformer with double transformer bodies connected in series |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |