CN105141140A - Improved multi-functional transformer - Google Patents
Improved multi-functional transformer Download PDFInfo
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- CN105141140A CN105141140A CN201510467899.2A CN201510467899A CN105141140A CN 105141140 A CN105141140 A CN 105141140A CN 201510467899 A CN201510467899 A CN 201510467899A CN 105141140 A CN105141140 A CN 105141140A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
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Abstract
The invention relates to an improved multi-functional transformer. The improved multi-functional transformer comprises a saturated reactor and a transformer which are arranged on the same closed-loop iron core, the saturated reactor comprises direct-current coils, The direct-current coils are arranged on two iron core posts and each provided with a tap, the dotted terminals of the two direct-current coils are connected, the tap of a first direct-current coil is connected with the variant terminal of a second direct-current coil through a positive thyristor, the variant terminal of the first direct-current coil is connected with the tap of the second direct-current coil through a positive thyristor, control ends of the two thyristors are connected with a control circuit, the control circuit controls the sizes of firing angles of the two thyristors, and the sizes of the direct currents of the two direct-current coils are continuously adjusted so as to achieve continuous adjustment on the reactance of the saturated reactor.
Description
Technical field
The present invention relates to electric power system and send power transformation technology field, the Multifunction transformer of particularly a kind of improvement.
Background technology
The application of power transformer in electric power system widely.Power transformer can be changed to low-voltage high-voltage variable, also low-voltage can be transformed to high voltage.
The application of reactor in electric power system is also very extensive.The controllable transducer that reactance value can regulate continuously is referred to as saturable reactor or magnet controlled reactor.
So far, power transformer and these two kinds of equipment of saturable reactor are all study respectively, manufacture respectively.If a transformer station needs power transformer and these two kinds of equipment of saturable reactor simultaneously, then the cumulative volume of equipment is large, iron core heavy, price is high, floor space is large.
Owing to " no matter the change of transformer core saturation is how many, causing the change of transformer leakage reactance to be not more than 7%." so, on the basis of a saturable reactor iron core, transformer and saturable reactor two kinds of functions can be realized simultaneously.Transformer module work does not affect the performance of saturable reactor module, and saturable reactor module work does not affect the performance of transformer module.The Multifunction transformer that CN201410461882.1, CN201510010431.0 propose, but the performance of saturable reactor module is wherein good not, and structure can be improved.
Summary of the invention
Object of the present invention, exactly for solving the problem, provides that a kind of performance is better, the Multifunction transformer of the improvement of more reasonable structure.
For achieving the above object, the present invention adopts with the following method:
A Multifunction transformer for improvement, it comprises and is arranged on saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil;
Described saturable reactor common transformer primary winding, saturable reactor remainder is connection transformer coil not, and does not access electric power system; Comprise the DC coil that a pair structure is identical, be arranged in two iron core column of described closed loop iron core respectively; Described each DC coil has tap; The Same Name of Ends of two DC coils connects, and the different name end of a DC coil is connected with the tap of another DC coil through a reverse thyristor, and the different name end of another DC coil is connected with the tap of last DC coil through a forward thyristor;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles; The size of continuous adjustment two DC coil direct current, realizes the continuous adjustment of saturable reactor reactance value.
Its DC coil of the Multifunction transformer of this kind of form is kept to two, thus make whole Multifunction transformer designs simplification, but transformer portion wherein and saturable reactor part influence each other little, even if transformer portion load current changes, the performance of saturable reactor part also can not be affected.
A Multifunction transformer for improvement, it comprises and is arranged on saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil;
Described saturable reactor common transformer primary winding, saturable reactor remainder is connection transformer coil not, and does not access electric power system; Comprise the DC coil that two pairs of structures are identical, be arranged in two iron core column of described closed loop iron core respectively, often pair of DC coil forms by the DC coil that does not have the DC coil of tap and to only have tap; The Same Name of Ends of two DC coils of tap is not had to connect, different name end connects the Same Name of Ends of the DC coil another iron core column having tap respectively, one has the different name end of the DC coil of tap to have the tap of the DC coil of tap to be connected through a reverse thyristor and another, and another has the different name end of the DC coil of tap to have the tap of the DC coil of tap to be connected through a forward thyristor with last;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles; The size of continuous adjustment two DC coil direct current, realizes the continuous adjustment of saturable reactor reactance value.
This kind of Multifunction transformer DC coil has four, but two DC coil electric currents in same iron core column produce head-on collision, thus the transient state effectively the shortening direct current flux corresponding time, improve the performance of saturable reactor part further.
The primary winding of described transformer is made up of four AC coil, and each AC coil equal turn numbers is arranged in two iron core column of described closed loop iron core respectively; Two AC coil forward series connection formation two AC coil strings in different iron core column, then two AC coil connection in series-parallel form primary winding.
In described primary winding, fly-wheel diode of connecting between two AC coil at least one iron core column, for high order harmonic component in AC coil provides rectification passage.The setting of this fly-wheel diode, can be each AC coil on Multifunction transformer and DC coil provides the balance of voltage, thus improves the performance of Multifunction transformer.
The secondary coil of described transformer is connected in series by a pair AC coil forward in two iron core column being positioned at described closed loop iron core and forms; Each AC coil equal turn numbers.
Described have the turn ratio δ of the tap of two DC coils of tap equal, is all less than 1/3.
Described when control circuit controls two thyristor full cut-ofves, the rectification circuit of two thyristors does not work, and the direct current of each DC coil equals zero, and transformer primary winding has maximum reactance value Zmax;
When control circuit controls the full conducting of each thyristor, the direct current flowing through each DC coil reaches design maximum value, and transformer primary winding has minimum reactance value Zmin.
Described same iron core column connects a fly-wheel diode between two DC coils, for high order harmonic component in DC coil provides rectification passage.This fly-wheel diode can be each AC coil on Multifunction transformer and DC coil provides the balance of voltage, improves Multifunction transformer performance.The sense of current in described same iron core column in two DC coils is contrary, clashes, the transient response time of direct current flux is shortened.
The Multifunction transformer that three-phase improves, it adopts the Multifunction transformer composition three-phase multifunctional transformer of the improvement described in claim 1 or 2.
The invention has the beneficial effects as follows: shown in DC coil structural rate Fig. 1 of the Multifunction transformer that the first improves shown in Fig. 2, the DC coil structure of Multifunction transformer is simple, and performance does not decline.
The DC coil complex structure of Multifunction transformer shown in the DC coil structural rate Fig. 1 of the Multifunction transformer that the second shown in Fig. 3 improves, but the magnetic flux that the Multifunction transformer DC coil that the second improves produces clashes.The result of head-on collision makes the transient response time of direct current flux have larger shortening, improves the performance of the saturable reactor module in Multifunction transformer.
The high order harmonic component rectification passage that diode D3, diode D4 provide can improve the effect of direct current flux head-on collision, improves Multifunction transformer performance.
Accompanying drawing explanation
Fig. 1 represents existing Multifunction transformer.
Fig. 2 represents the first Multifunction transformer improved.
Fig. 3 represents the Multifunction transformer that the second improves.
Wherein, 1. primary winding terminal I, 2. primary winding terminal II, 3. secondary coil terminal I, 4. secondary coil terminal II, 5. closed loop iron core, 6. control circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
Embodiment 1:
The structure of the Multifunction transformer that CN201510010431.0 proposes and connected mode are as shown in Figure 1.Wherein an iron core column there are AC coil L11, AC coil L13, AC coil L15, DC coil L17 and DC coil L19, another root iron core column have AC coil L12, AC coil L14, AC coil L16, DC coil L18 and DC coil L20.Have four DC coils, and the number of turn of four DC coils is all many.Therefore can improve four DC coils, with simplified structure.
The structure of the first Multifunction transformer improved and connected mode are as shown in Figure 2.Comprise primary winding terminal I1, primary winding terminal II 2, secondary coil terminal I3, secondary coil terminal II 4, closed loop iron core 5, control circuit 6.The closed loop iron core of the first Multifunction transformer improved is identical with the closed loop iron core of existing saturable reactor.The first Multifunction transformer closed loop iron core 5 improved has the iron core column that two sectional areas are equal, all have DC coil and AC coil at least; These two iron core column have at least separately can form a magnetic flux closed loop without the other side's iron core column.Wherein an iron core column there are AC coil L11, AC coil L13, AC coil L15, DC coil L23, another root iron core column have AC coil L12, AC coil L14, AC coil L16, DC coil L24; The equal turn numbers of AC coil L11, AC coil L12, AC coil L13, AC coil L14, the equal turn numbers of AC coil L15 and AC coil L16, DC coil L23 is identical with the structure of DC coil L24, equal turn numbers; DC coil L23 and DC coil L24 has tap, and the coil turn between tap to this coil different name end is δ with the ratio of whole coil turn, and DC coil L23 is equal with the turn ratio δ of DC coil L24 tap, is all less than 1/3.
Closed loop iron core 5 can be mutually do not have aisled two closed loop iron cores, such as 1: two square shape iron core.Also can be one, mutual aisled closed loop iron core; Such as 2: three iron core column, iron core column two ends have yoke to be communicated with three iron core column, and any two iron core column can both form magnetic flux closed loop mutually, but have two each self-formings of energy at least without the closed loop of the other side's iron core column.Such as 3: four iron core column, iron core column two ends have yoke to be communicated with four iron core column, and any two iron core column can both form magnetic flux closed loop mutually, but have two each self-formings of energy at least without the closed loop of the other side's iron core column, as shown in Figure 2.
AC coil L11 and the series connection of AC coil L14 forward are between primary winding terminal I1 and primary winding terminal II 2, and AC coil L12 and the series connection of AC coil L13 forward are between primary winding terminal I1 and primary winding terminal II 2.AC coil L15 and the series connection of AC coil L16 forward are in secondary coil terminal I3 and secondary coil terminal II 4.Primary winding and secondary coil form the transformer module in the first Multifunction transformer improved.
AC coil L11 different name end is also connected diode D3 with between AC coil L13 Same Name of Ends.Diode D3 is called fly-wheel diode.Fly-wheel diode can be each AC coil on Multifunction transformer and DC coil provides the balance of voltage; Fly-wheel diode to can be on Multifunction transformer high order harmonic component in AC coil and provides rectification passage, improves Multifunction transformer performance.Fly-wheel diode, in some application scenarios, can be removed.
DC coil L23 Same Name of Ends connects DC coil L24 Same Name of Ends, and the tap of DC coil L23 connects the different name end of DC coil L24 through forward thyristor D1, and the different name end of DC coil L23 connects the tap of DC coil L24 through forward thyristor D2.
The trigger terminal connection control circuit 6 respectively of thyristor D1 and thyristor D2, control circuit 6 controls the size of thyristor D1 and thyristor D2 Trigger Angle, realizes the size regulating thyristor D1 and thyristor D2 rectification flow continuously.
If the first Multifunction transformer primary winding rated voltage improved is U1, the first Multifunction transformer primary winding the improved accesses the system that rated voltage is U1.AC coil L11, AC coil L12, AC coil L13, AC coil L14 have exciting current to circulate, exchange flux is produced in closed loop iron core 5, this exchange flux produces induced electromotive force in AC coil L15 and AC coil L16, if the secondary coil that AC coil L15 is formed with AC coil L16 is connected load, then secondary coil provides load current for load.Primary winding and secondary coil realize the transformer function of the Multifunction transformer that the first improves.
The first Multifunction transformer primary winding access rated voltage improved is the system of U1.AC coil L11, AC coil L12, AC coil L13, AC coil L14 have exciting current to circulate, exchange flux is produced in closed loop iron core 5, this exchange flux is at DC coil L23, produce AC electromotive force of inducting in DC coil L24, thyristor D1 and thyristor D2 two ends have alternating voltage to exist.
When control circuit 6 controls thyristor D1 and thyristor D2 full cut-off, thyristor D1 and thyristor D2 rectification circuit do not work, and the direct current in DC coil L23 and DC coil L24 equals zero.The first Multifunction transformer primary winding improved has maximum reactance value Zmax.
When control circuit 6 controls the full conducting of thyristor D1 and thyristor D2, the direct current flowing through DC coil L23 and DC coil L24 reaches design maximum value.The first Multifunction transformer primary winding improved has minimum reactance value Zmin.
Control circuit 6 controls the size of thyristor D1 and thyristor D2 rectification flow, can control the size of direct current in DC coil L23 and DC coil L24, can control the size of the Multifunction transformer primary winding reactance value that the first improves.The size of control circuit 6 continuous control thyristor D1 and thyristor D2 rectification flow, can the size of direct current in continuous control DC coil L23 and DC coil L24, realize the continuous adjustment of the Multifunction transformer primary winding reactance value that the first improves, the first Multifunction transformer primary winding reactance value improved regulates between the minimum and maximum, changes.
Experiment shows, the first Multifunction transformer secondary coil improved connects load, no matter load current increases, or reduce, all can not change the direct current size in DC coil L23 and DC coil L24, all can not affect the saturable reactor performance in the first Multifunction transformer improved.
Experiment shows, direct current in DC coil L23 and DC coil L24 changes in the scope of saturable reactor demand, the Multifunction transformer primary voltage improve the first and the no-load voltage ratio of secondary voltage affect very little, and the leakage reactance between the Multifunction transformer primary winding improve the first and secondary coil affects and is not more than 7%.
Experiment shows, shown in DC coil structural rate Fig. 1 of the Multifunction transformer that the first improves shown in Fig. 2, the DC coil structure of Multifunction transformer is simple, and performance does not decline.
Embodiment 2:
Shown in Fig. 1, the transient response time of Multifunction transformer shown in Multifunction transformer and Fig. 2 is long.The Multifunction transformer that the present embodiment provides a kind of transient response time shorter.
The structure of the Multifunction transformer that the second improves and connected mode are as shown in Figure 3.Comprise primary winding terminal I1, primary winding terminal II 2, secondary coil terminal I3, secondary coil terminal II 4, closed loop iron core 5, control circuit 6.The closed loop iron core of the Multifunction transformer that the second improves is identical with embodiment 1, no longer burden.
Wherein an iron core column there are AC coil L11, AC coil L13, AC coil L15, DC coil L21 and DC coil L23, another root iron core column have AC coil L12, AC coil L14, AC coil L16, DC coil L22 and DC coil L24; The equal turn numbers of AC coil L11, AC coil L12, AC coil L13, AC coil L14, the equal turn numbers of AC coil L15 and AC coil L16; DC coil L21 is identical with the structure of DC coil L22, equal turn numbers, and DC coil L23 is identical with the structure of DC coil L24, equal turn numbers; DC coil L23 and DC coil L24 has tap, and the coil turn between tap to coil different name end is δ with the ratio of whole coil turn, and DC coil L23 is equal with the turn ratio δ of DC coil L24 tap, is all less than 1/3.
The connected mode of the Multifunction transformer AC coil that the second improves is identical with embodiment 1, no longer burden.
DC coil L21 Same Name of Ends connects DC coil L22 Same Name of Ends, DC coil L21 different name end connects DC coil L24 Same Name of Ends, DC coil L22 different name end connects DC coil L23 Same Name of Ends, the tap of DC coil L23 connects the different name end of DC coil L24 through forward thyristor D1, the different name end of DC coil L23 connects the tap of DC coil L24 through forward thyristor D2.
The trigger terminal connection control circuit 6 respectively of thyristor D1 and thyristor D2, control circuit 6 controls the size of thyristor D1 and thyristor D2 Trigger Angle, realizes the size regulating thyristor D1 and thyristor D2 rectification flow continuously.
DC coil L21 different name end is also connected diode D4 with between DC coil L23 Same Name of Ends.Diode D4 is also referred to as fly-wheel diode.Fly-wheel diode can be each AC coil on Multifunction transformer and DC coil provides the balance of voltage; Fly-wheel diode to can be on Multifunction transformer high order harmonic component in DC coil and provides rectification passage, improves Multifunction transformer performance.Fly-wheel diode, in some application scenarios, can be removed.
The Multifunction transformer primary winding access rated voltage that the second improves is the system of U1.AC coil L11, AC coil L12, AC coil L13, AC coil L14 have exciting current to circulate, exchange flux is produced in closed loop iron core 5, this exchange flux is at DC coil L21, DC coil L22, DC coil L23, produce induced electromotive force in DC coil L24, thyristor D1 and thyristor D2 two ends have alternating voltage to exist.
When control circuit 6 controls thyristor D1 and thyristor D2 full cut-off, thyristor D1 and thyristor D2 rectification circuit do not work, and the direct current in DC coil L21, DC coil L22, DC coil L23 and DC coil L24 equals zero.The Multifunction transformer primary winding that the second improves has maximum reactance value Zmax.
When control circuit 6 controls the full conducting of thyristor D1 and thyristor D2, flow through DC coil L21, DC coil L22, the direct current of DC coil L23 and DC coil L24 reaches design maximum value.The Multifunction transformer primary winding that the second improves has minimum reactance value Zmin.
Control circuit 6 controls the size of thyristor D1 and thyristor D2 rectification flow, DC coil L21 can be controlled, the size of direct current in DC coil L22, DC coil L23 and DC coil L24, can control the size of the Multifunction transformer primary winding reactance value that the second improves.The size of control circuit 6 continuous control thyristor D1 and thyristor D2 rectification flow, can continuous control DC coil L21, DC coil L22, the size of direct current in DC coil L23 and DC coil L24, realize the continuous adjustment of the Multifunction transformer primary winding reactance value that the second improves, the Multifunction transformer primary winding reactance value that the second improves regulates between the minimum and maximum, changes.
The direct current of DC coil L24, DC coil L21 is directed upwardly; The direct current direction of DC coil L22, DC coil L23 down; Direct current forms loop in DC coil L24, DC coil L21, DC coil L22, DC coil L23.DC coil L21 and DC coil L23 is in same iron core column, and DC coil L21 is contrary with the direct current flux direction that DC coil L23 produces to clash.DC coil L22 and DC coil L24 is in same iron core column, and DC coil L22 is contrary with the direct current flux direction that DC coil L24 produces to clash.Experiment shows: the result of head-on collision makes the transient response time of direct current flux shorten.
Experiment shows, the direct current flux that DC coil L21 and DC coil L23 produces clashes, the direct current flux that DC coil L22 and DC coil L24 produces clashes, the high order harmonic component rectification passage that diode D3, diode D4 provide can improve the effect of direct current flux head-on collision, improves the Multifunction transformer performance that the second improves.
The part of embodiment 2 and embodiment 1 general character, no longer burden.
The Multifunction transformer of a modification of the present invention can manufacture and design by prior art, can realize completely.There is broad prospect of application.
Claims (10)
1. the Multifunction transformer improved, is characterized in that, it comprises and is arranged on saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil;
Described saturable reactor common transformer primary winding, saturable reactor remainder is connection transformer coil not, and does not access electric power system; Comprise the DC coil that a pair structure is identical, be arranged in two iron core column of described closed loop iron core respectively; Described each DC coil has tap; The Same Name of Ends of two DC coils connects, and the different name end of a DC coil is connected with the tap of another DC coil through a reverse thyristor, and the different name end of another DC coil is connected with the tap of last DC coil through a forward thyristor;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles; The size of continuous adjustment two DC coil direct current, realizes the continuous adjustment of saturable reactor reactance value.
2. the Multifunction transformer improved, is characterized in that, it comprises and is arranged on saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil;
Described saturable reactor common transformer primary winding, saturable reactor remainder is connection transformer coil not, and does not access electric power system; Comprise the DC coil that two pairs of structures are identical, be arranged in two iron core column of described closed loop iron core respectively, often pair of DC coil forms by the DC coil that does not have the DC coil of tap and to only have tap; The Same Name of Ends of two DC coils of tap is not had to connect, different name end connects the Same Name of Ends of the DC coil another iron core column having tap respectively, one has the different name end of the DC coil of tap to have the tap of the DC coil of tap to be connected through a reverse thyristor and another, and another has the different name end of the DC coil of tap to have the tap of the DC coil of tap to be connected through a forward thyristor with last;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles; The size of continuous adjustment two DC coil direct current, realizes the continuous adjustment of saturable reactor reactance value.
3. the Multifunction transformer of a kind of improvement as claimed in claim 1 or 2, is characterized in that, the primary winding of described transformer is made up of four AC coil, and each AC coil equal turn numbers is arranged in two iron core column of described closed loop iron core respectively; Two AC coil forward series connection formation two AC coil strings in different iron core column, then two AC coil connection in series-parallel form primary winding.
4. the Multifunction transformer of a kind of improvement as claimed in claim 3, is characterized in that, in described primary winding, fly-wheel diode of connecting between two AC coil at least one iron core column, for high order harmonic component in AC coil provides rectification passage.
5. the Multifunction transformer of a kind of improvement as claimed in claim 1 or 2, is characterized in that, the secondary coil of described transformer is connected in series by a pair AC coil forward in two iron core column being positioned at described closed loop iron core and forms; Each AC coil equal turn numbers.
6. the Multifunction transformer of a kind of improvement as claimed in claim 1 or 2, is characterized in that, described in have the turn ratio δ of the tap of two DC coils of tap equal, be all less than 1/3.
7. the Multifunction transformer of a kind of improvement as claimed in claim 1 or 2, it is characterized in that, described when control circuit controls two thyristor full cut-ofves, the rectification circuit of two thyristors does not work, the direct current of each DC coil equals zero, and transformer primary winding has maximum reactance value Zmax;
When control circuit controls the full conducting of each thyristor, the direct current flowing through each DC coil reaches design maximum value, and transformer primary winding has minimum reactance value Zmin.
8. the Multifunction transformer of a kind of improvement as claimed in claim 2, is characterized in that, described same iron core column connects a fly-wheel diode between two DC coils, for high order harmonic component in DC coil provides rectification passage.
9. the Multifunction transformer of a kind of improvement as claimed in claim 2, is characterized in that, the sense of current in described same iron core column in two DC coils is contrary, clashes, the transient response time of direct current flux is shortened.
10. a Multifunction transformer for three-phase improvement, is characterized in that, its adopts the Multifunction transformer composition three-phase multifunctional transformer of the improvement described in claim 1 or 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510467899.2A CN105141140B (en) | 2015-07-31 | 2015-07-31 | A kind of improved Multifunction transformer |
| PCT/CN2016/090643 WO2017020709A1 (en) | 2015-07-31 | 2016-07-20 | Improved multifunctional transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510467899.2A CN105141140B (en) | 2015-07-31 | 2015-07-31 | A kind of improved Multifunction transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105141140A true CN105141140A (en) | 2015-12-09 |
| CN105141140B CN105141140B (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510467899.2A Expired - Fee Related CN105141140B (en) | 2015-07-31 | 2015-07-31 | A kind of improved Multifunction transformer |
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| CN (1) | CN105141140B (en) |
| WO (1) | WO2017020709A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020709A1 (en) * | 2015-07-31 | 2017-02-09 | 李晓明 | Improved multifunctional transformer |
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| TWI378478B (en) * | 2007-01-09 | 2012-12-01 | Mitsubishi Electric Corp | Reactor-jointed transformer |
| CN104201903B (en) * | 2014-09-11 | 2016-08-31 | 山东大学 | A kind of Multifunction transformer |
| CN105141140B (en) * | 2015-07-31 | 2017-09-26 | 山东大学 | A kind of improved Multifunction transformer |
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2015
- 2015-07-31 CN CN201510467899.2A patent/CN105141140B/en not_active Expired - Fee Related
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2016
- 2016-07-20 WO PCT/CN2016/090643 patent/WO2017020709A1/en active Application Filing
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| CN201146386Y (en) * | 2008-01-21 | 2008-11-05 | 丹东欣泰电气股份有限公司 | Magnetic valve type continuation adjustable arc-suppression coil |
| CN202019199U (en) * | 2011-05-18 | 2011-10-26 | 合肥华威自动化有限公司 | Magnetic control reactor combined by windings wound in different directions |
| CN104078199A (en) * | 2014-07-23 | 2014-10-01 | 山东大学 | Device for improving performance of direct-current saturable reactor and method of device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020709A1 (en) * | 2015-07-31 | 2017-02-09 | 李晓明 | Improved multifunctional transformer |
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| Publication number | Publication date |
|---|---|
| CN105141140B (en) | 2017-09-26 |
| WO2017020709A1 (en) | 2017-02-09 |
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