CN2210417Y - Double compensation AC voltage stabilizing transformer of three phase net work compreheision type - Google Patents
Double compensation AC voltage stabilizing transformer of three phase net work compreheision type Download PDFInfo
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- CN2210417Y CN2210417Y CN 94231086 CN94231086U CN2210417Y CN 2210417 Y CN2210417 Y CN 2210417Y CN 94231086 CN94231086 CN 94231086 CN 94231086 U CN94231086 U CN 94231086U CN 2210417 Y CN2210417 Y CN 2210417Y
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Abstract
The utility model provides a double compensation AC voltage stabilizing transformer of three phase net work combination type. The utility model is provided with three phase compensation windings, so three phase output voltage is basically not influenced by the voltage unbalance of input source; the utility model is provided with output voltage compensation windings, so the influence of the characteristics of tilting up of the saturation section of a magnetization curve to output voltage can be compensated. Because the input and the output compensation windings are separated, and the techniques of shielding and grounding and the output filter technique are used by the utility model; the utility model has the strong abilities of preventing interferences, and thunderstroke; the utility model can be widely used for communication, navigation, post telephone and telegraph system, magnetic resonance imaging, etc. in medical apparatus, communication apparatus, computer workstations, and banking systems.
Description
The utility model belongs to a kind of AC voltage-stabilizing transformer.
At present, the many area power grid scopes range of the fluctuation of voltage of China are big, often be lower than 160 volts, or be higher than 260 volts, and the cycle is a Millisecond, the spike pulse that peak value reaches hundreds of volts occurs often, and the safe and reliable operation of equipment such as computing machine, large medical apparatus, analytical instrument, communication and airport navigational system is constituted a threat to.The existing common three-phase ac regulated power supply that is come by the development of single-phase AC voltage stabilized transformer has two classes: 1, three-phase integrated type; 2, connect by three single-phase voltage stabilizer stars and constitute.This voltage stabilizer of two types cuts both ways: (1), be better than the latter for the former performance of imbalance of electrical network or load, serious when uneven the latter more serious phase distortion and incident big current in middle wire can appear.(2), during the high-power stabilized voltage supply more than constituting 80KVA, the former is difficult to realization because heater element is concentrated, the latter then can realize.(3), both common weak point is that the current waveform that flows through resonant capacitance contains high harmonic component, so just has to the electric capacity derate is used, and even so also is difficult to avoid the heating and the damage of electric capacity.
The purpose of this utility model is to provide a kind of and can overcomes above-mentioned weak point, provides the comprehensive double compensation AC voltage-stabilizing of the high-power three-phase network transformer of broad voltage stabilized range.
The utility model is by a plurality of iron cores, linear inductance, the input offset winding, output compensation winding, saturable transformer constitutes, every iron core that has mutually separately, linear inductance, the input offset winding, output compensation winding, saturable transformer, every mutually all on same core limb, around last its linear inductance, the input offset winding, output compensation winding, one end of linear inductance is connected in series mutually with the elementary winding of a plurality of saturable transformers (wherein two is Z-shaped connection), the other end is an input end, be connected with power supply, the output terminal of the secondary winding of a plurality of saturable transformers (wherein two is Z-shaped connection) is connected in series with an end of output compensation winding, the other end of output compensation winding is an output terminal, be connected with load, the input offset winding is connected into triangle, and resonant capacitance is received the output terminal of secondary winding with " △ " connection.For realizing three-phase four-wire system, can introduce a middle line transformer at output terminal.
Accompanying drawing 1 is the utility model electrical block diagram.
Accompanying drawing 2 is each coil voltage of the utility model and output voltage waveform.
As Fig. 1, be example with the three-phase, every design that has an iron core, a linear inductance, an input offset winding, an output compensation winding, two saturable transformers mutually, like this, the utility model is by three iron cores, three linear inductances (L1, L2, L3), (L1 "; L2 ", L3 "), six saturable transformers (T1T1 ', T2T2 '; T3T3 '; T4T4 ', T5T5 ', T6T6 ') constitute for three input offset windings (L1 ' L2 ' L3 '), three output compensation windings.With A is example mutually, on first core limb, around last linear inductance (L1), input offset winding (L1 '), output compensation winding (L1 "); first saturable transformer is wound with two windings; be elementary winding (T1) and secondary winding (T1 '); second saturable transformer is wound with four windings; be two elementary windings (T4) and two secondary winding (T4 '); the elementary winding (T1 of an end of linear inductance (L1) and a plurality of saturable transformers, T4) be connected in series mutually, the other end is an input end, (Va) is connected with power supply, and (end of L1 ") be connected in series the output terminal (A ') of the secondary winding of a plurality of saturable transformers (T1 ', T4 '); output compensates winding, and (other end (A) of L1 ") is an output terminal, is connected with load with output compensation winding; (Vb, connected mode Vc) therewith roughly the same for all the other two-phases.Input offset winding (L1 ' L2 ' L3 ') is connected into triangle, and (Ca, Cb Cc) receive the output terminal (A ', B ', C ') of secondary winding to resonant capacitance with " △ " connection.For realizing three-phase four-wire system, can introduce a middle line transformer (NT) at output terminal.
When input source voltage was asymmetric, the input offset winding (L1 ' L2 ' L3 ') can provide compensating action preferably.For sake of convenience, the coil ratio of establishing transformer and inductor is 1, is then got by Fig. 1:
Va－Vb＝Vab Vb－Vc＝Vbc Vc－Va＝Vca
Vab＋Vbc＋Vca＝0 V（16，17）＋V（26，27）＋V（36，37）＝0
〔Vab－V（16，17）〕＋〔Vbc－V（26，27）〕＋〔Vca－V（36，37）〕＝0
By turn ratio is 1
V（11，21）＋V（21，31）＋V（31，11）＝0 （1）
Three in left side is the elementary winding (T1 of each saturable transformer in the formula (1), T2, T3) composite value of terminal voltage, the consistance of their magnitudes of voltage can be guaranteed by magnetic saturation characteristic, therefore formula (1) can be guaranteed three-phase output voltage phase place phase mutual deviation 120 degree, and is not subjected to the influence of input source Voltage unbalance substantially.
Because saturated section of magnetization curve unshakable in one's determination has the characteristic of upwarping, therefore when load variations or source change in voltage, output voltage will change along saturated section magnetization curve.For obtaining stable output voltage, output compensation winding (L1 ", L2 ", L3 ") have been incorporated herein.Total output voltage (V
AB) and resonance potential (V
A ' B ') and bucking voltage (V
AA ', V
BB ') the phase magnitude relation as shown in Figure 3.
Claims (2)
1, the comprehensive double compensation AC voltage-stabilizing of a kind of three-phase network transformer, by a plurality of iron cores, linear inductance, the input offset winding, output compensation winding, saturable transformer constitutes, it is characterized in that every iron core that has mutually separately, linear inductance, the input offset winding, output compensation winding, saturable transformer, every mutually all on same core limb, around last its linear inductance, the input offset winding, output compensation winding, one end of linear inductance is connected in series mutually with the elementary winding of a plurality of saturable transformers (Z-shaped connection), the other end is an input end, be connected with power supply, the output terminal of the secondary winding of a plurality of saturable transformers (Z-shaped connection) is connected in series with an end of output compensation winding, the other end of output compensation winding is an output terminal, be connected with load, the input offset winding is connected into triangle, and resonant capacitance is received the output terminal of secondary winding with " Δ " connection.
2, the comprehensive double compensation AC voltage-stabilizing of three-phase network according to claim 1 transformer is characterized in that and can introduce a middle line transformer at output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231086 CN2210417Y (en) | 1994-12-20 | 1994-12-20 | Double compensation AC voltage stabilizing transformer of three phase net work compreheision type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231086 CN2210417Y (en) | 1994-12-20 | 1994-12-20 | Double compensation AC voltage stabilizing transformer of three phase net work compreheision type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210417Y true CN2210417Y (en) | 1995-10-18 |
Family
ID=33843020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231086 Expired - Fee Related CN2210417Y (en) | 1994-12-20 | 1994-12-20 | Double compensation AC voltage stabilizing transformer of three phase net work compreheision type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210417Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404414B (en) * | 2008-09-28 | 2011-05-04 | 王磊 | Power distribution network electromagnetic optimization dynamic loss reduction method, system and synthetic loss reduction system |
| CN101346868B (en) * | 2005-12-30 | 2011-08-24 | Abb技术有限公司 | balance equipment |
-
1994
- 1994-12-20 CN CN 94231086 patent/CN2210417Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346868B (en) * | 2005-12-30 | 2011-08-24 | Abb技术有限公司 | balance equipment |
| CN101404414B (en) * | 2008-09-28 | 2011-05-04 | 王磊 | Power distribution network electromagnetic optimization dynamic loss reduction method, system and synthetic loss reduction system |
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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 |