CN2371655Y - Magnetic circuit voltage regulator - Google Patents
Magnetic circuit voltage regulator Download PDFInfo
- Publication number
- CN2371655Y CN2371655Y CN 99202532 CN99202532U CN2371655Y CN 2371655 Y CN2371655 Y CN 2371655Y CN 99202532 CN99202532 CN 99202532 CN 99202532 U CN99202532 U CN 99202532U CN 2371655 Y CN2371655 Y CN 2371655Y
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- CN
- China
- Prior art keywords
- voltage
- voltage regulator
- iron core
- utility
- magnetic circuit
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- Expired - Lifetime
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Abstract
The utility model relates to a magnetic circuit voltage regulator, composed of a main loop iron core, a primary coil, a secondary coil, etc. An iron core magnetic circuit is provided with an auxiliary loop iron core and a magnetic flux distributing device, and the secondary coil surrounds the auxiliary loop iron core. The utility model uses the magnetism theory in the electromagnetic induction principle to change the present status of the existing voltage regulators and cancel the usage of taps and load (zero load) tap switches of the existing transformer coils. The utility model which can be used as a voltage regulator for dry or oil-immersed power transformers is especially suitable for the voltage regulating occasions of special transformers, such as large-scale rectifier transformers, electric furnace transformers, etc. The utility model substitutes the existing voltage regulators of contact type, moving coil type, induction type, magnetic type, etc.
Description
The utility model relates to voltage adjustment (as pressure regulation, transformation) device, is applicable to the various pressure regulation occasions that change output voltage or regulated output voltage.
Existing all kinds of voltage regulators and range transformer product, their operation principle all are to use electromagnetic induction principle, and " the voltage adjustment " of existing technology all is the " " theory that adopts in the electromagnetic induction principle.
The type of existing voltage regulator has contact type voltage regulator, shifting coil voltage regulator, induction voltage regulator, magnetic voltage regulator.Contact type voltage regulator is to change the output coil number of turn by moving contact to change output voltage, its advantage be easily manufactured, price is low, but shortcoming is a moving contact place failure rate height, poor reliability, starting voltage is higher.Shifting coil voltage regulator is that advantage is that pressure regulation is level and smooth, but exists noise big, loss height, starting voltage height, defectives such as complex structure by a short-circuited coil, along moving regulation voltage on (magnetic circuit) height unshakable in one's determination.So-called induction voltage regulator is to reach the pressure regulation purpose by the phase relation of regulating two parts coil, and advantage is that pressure regulation is level and smooth, and good voltage waveform is in moving state but shortcoming is an operating state, unsuitable long-term work, and loss is big, the starting voltage height.Magnetic voltage regulator is to come regulation voltage by the saturation depth of regulating saturable reactor, and advantage is simple in structure, and range of regulation is big, and shortcoming has noise big, and loss is big, and output waveform is poor.
Existing have that to carry (no-load) voltage regulating transformer be to change circle voltage by the number of turn of adjusting its first siding ring, thereby change the secondary output voltage, first siding ring need be extracted lifting one's head of sufficient amount out during manufacturing, utilize these taps, but, realize the purpose of stepped voltage regulation again by the shunting switch of actuating.Since when making, coil to extract a lot of heads out, complex process, and the tap meeting causes the ampere-turn imbalance of coil own, dynamic stability is poor, tap will be connected with shunting switch increases transformer lead quantity and joint quantity, and the transformer fault point is increased, and safe operation reduces.Shunting switch for actuating will produce electric arc at course of action, and safe operation can not get guaranteeing that electric arc plays carbonization to dielectric, must periodic maintenance maintain.Because pressure regulation needs tap, must partition connect switch, the transformer manufacturing cost is increased, volume increases.
The purpose of this utility model is with " magnetic " theory in the electromagnetic induction principle, changes the present situation of existing voltage regulator, keeps the advantage of its " the voltage adjustment is level and smooth ", overcomes and improves its defective; For existing transformer, then cancel coil tap (having only the rated voltage shelves to lift one's head) and the voltage regulator of magnetic circuit of the adapted that carries (or no-load) shunting switch is arranged.
The technical scheme of the utility model voltage regulator of magnetic circuit is: be made up of major loop iron core and institutes such as primary coil, secondary coil, it is characterized in that being equipped with in the iron circuit the unshakable in one's determination and magnetic flux distributor of subsidiary loop, secondary coil surrounds the subsidiary loop iron core.
The utility model relates to voltage regulator of magnetic circuit, is the regulator that approximate zero is transferred to 100% voltage, and is contactless stepless voltage regulation, compared with the prior art, has following advantage:
The one, use on load tap changer in the existing transformer of cancellation, in the pressure regulation process, switch the electric arc that is produced thereby eliminate loaded switch, make the transformer safe operation reliably guaranteed, and exempt and safeguarding.The 2nd, the present technique product need not tap, need not shunting switch, makes simplified manufacturing process, saves raw and auxiliary material.The 3rd, can reach about 10 volts as its starting voltage of voltage regulator, if take special measure can accomplish that starting voltage is zero, test is easily.The 4th, this technology is carried out pressure regulation by the allocation proportion on adjustable magnetic road, does not have the overexcitation phenomenon, good output waveform.The 5th, by adjustable magnetic road regulation voltage, operating distance is short, but continuous voltage regulating, and speed is fast.The 6th, coil need not tap, and itself fixes, and insulation system is easily handled, and can be used in the high voltage large capcity transformer.The 7th, when this device mates with transformer, can place the elementary in-out end or the secondary in-out end of transformer, also can place power circuit proximal end place, improve the situation of tail end line brownout.
Fig. 1 is the organigram of the utility model voltage regulator of magnetic circuit.
Below in conjunction with Fig. 1 embodiment of the present utility model is done detailed explanation.
The basic principle of well-known voltage regulator and transformer is an electromagnetic induction, makes electric energy be delivered to secondaryly from elementary, and its basic conception is that primary coil is the same at the alternating magnetic field that (magnetic circuit) unshakable in one's determination produces, if the number of turn of primary coil is N
1, the number of turn of secondary coil is N
2, then under the situation of overexcitation not, the voltage ratio U of primary and secondary coil
1/ U
2Should equal the turn ratio N of primary and secondary coil
1/ N
2As the elementary alternating magnetic field that induces is imported in the primary and secondary coil, adjustable size, direction and elementary induce opposite, then to induce also be adjustable voltage to secondary coil.The results showed that adjusting range is better than other voltage regulator from 5%～100%.As for the transformer ' s type product, require range of regulation smaller, be generally ± 5% and ± 4 * 2.5%, even special transformer can satisfy equally, especially can make the stepped voltage regulation of transformer into stepless voltage regulation.
As shown in Figure 1, AX is primary coil 2 terminals, and ax is secondary coil 3 terminals, and primary coil 2 is the total magnetic flux magnetic circuit in being enclosed in, and in secondary coil is enclosed in total magnetic flux magnetic circuit and negative magnetic flux magnetic circuit is arranged.Subsidiary loop iron core 4 is negative magnetic flux among Fig. 1, because the speed of electromagnetic transfer is fast, so the phase difference of negative magnetic flux and total magnetic flux can think zero, if the total magnetic flux of secondary coil is thought the words of positive magnetic flux, following formula is set up: positive magnetic flux=total magnetic flux-negative magnetic flux, the major loop iron core 1 among Fig. 1 is positive magnetic flux.
The adjustment amount of negative magnetic flux is zero to total magnetic flux, and the variable quantity of positive magnetic flux can be from total magnetic flux to zero, and therefore, the voltage of secondary coil 3 can transfer to zero from maximum.
More than be single-phase introduction, for three-phase, the structure total with three-phase transformer is close, is that every post adds a subsidiary loop unshakable in one's determination 4 and magnetic flux distributor 5.Magnetic flux distributor 5 among Fig. 1 is done upper and lower moving when pressure regulation, its moving interval is stepping not, so be stepless voltage regulation.For the voltage regulating mode of lap winding type coil, its principle is basic the same with concentric coil, and only subsidiary loop iron core 4 is positioned in the middle of the secondary coil 3.
Above-mentioned is by the maximum magnitude voltage regulating mode, if the pressure regulation amplitude is little, negative magnetic circuit can correspondingly reduce.Because of this regulator is that magnetic circuit is divided into two branch roads,, reach the pressure regulation purpose, so be called voltage regulator of magnetic circuit by regulating the component size of total magnetic flux two shunt.
This voltage regulator of magnetic circuit can be made dry type and oil-immersed power transformer regulator, is used in the transformer of large rectifier transformer, furnace transformer and other special purpose.Substitute existing contact type voltage regulator, shifting coil voltage regulator, induction voltage regulator and magnetic voltage regulator.
Claims (1)
1, voltage regulator of magnetic circuit is made up of major loop iron core and institutes such as primary coil, secondary coil, it is characterized in that being equipped with in the iron circuit the unshakable in one's determination and magnetic flux distributor of subsidiary loop, and secondary coil surrounds the subsidiary loop iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202532 CN2371655Y (en) | 1999-01-31 | 1999-01-31 | Magnetic circuit voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202532 CN2371655Y (en) | 1999-01-31 | 1999-01-31 | Magnetic circuit voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371655Y true CN2371655Y (en) | 2000-03-29 |
Family
ID=33997943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99202532 Expired - Lifetime CN2371655Y (en) | 1999-01-31 | 1999-01-31 | Magnetic circuit voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371655Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395555B (en) * | 2006-03-08 | 2011-08-10 | 阿雷瓦T&D股份有限公司 | A hybrid on-load tap changer and a method of operating the same |
-
1999
- 1999-01-31 CN CN 99202532 patent/CN2371655Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395555B (en) * | 2006-03-08 | 2011-08-10 | 阿雷瓦T&D股份有限公司 | A hybrid on-load tap changer and a method of operating the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |