CN104485824A - Multifunctional transformer with isolated magnetic control - Google Patents
Multifunctional transformer with isolated magnetic control Download PDFInfo
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- CN104485824A CN104485824A CN201510010431.0A CN201510010431A CN104485824A CN 104485824 A CN104485824 A CN 104485824A CN 201510010431 A CN201510010431 A CN 201510010431A CN 104485824 A CN104485824 A CN 104485824A
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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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
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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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
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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)
- Ac-Ac Conversion (AREA)
- Control Of Electrical Variables (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The invention relates to a multifunctional transformer with isolated magnetic control. The multifunctional transformer comprises a magnetic control saturable reactor, and a primary coil and a secondary coil are arranged on an iron core of the magnetic control saturable reactor. The ratio of transformation of the primary coil and the secondary coil is equal to that of the transformer. Various AC coils and DC coils of the magnetic control saturable reactor are neither connected with the primary coil and the secondary coil nor connected with an electrical power system. The magnetic control saturable reactor is provided with the DC coils which are connected with a thyristor D1 and a thyristor D2 in series respectively. A control circuit controls the magnitudes of fire angles of the thyristor D1 and the thyristor D2, and therefore the reactance value of the primary coil is continuously adjusted.
Description
Technical field
The present invention relates to electric power system and send power transformation technology field, the Multifunction transformer that particularly a kind of magnetic control is isolated.
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 shunt reactor in electric power system is also very extensive.Shunt reactor can over-voltage; Reactor is combined with electric capacity can form power system reactive power regulating circuit.In some applications, the reactance value of shunt reactor is changeless; In some applications, the reactance value of reactor constantly should regulate along with the change of power system operation mode.The controllable transducer that reactance value can regulate continuously is referred to as saturable reactor or magnet controlled reactor.
So far, these two kinds of equipment of power transformer, magnetic control saturable reactor are all study respectively, manufacture respectively.Two kinds of equipment have larger iron core respectively, all need the coil that the number of turn is more.If a transformer station needs power transformer, magnetic control saturable reactor, these two kinds of equipment simultaneously, then the cumulative volume of equipment is large, iron core heavy, price is high, floor space is large.
CN201410461882.1 proposes a kind of Multifunction transformer, on the basis of a magnetic control saturable reactor iron core, realizes transformer function, magnetic control saturable reactor function.But the transformer load size variation of this invention can have an impact to magnetic control saturable reactor reactance value.Be not suitable for transformer load to change greatly, and require the indeclinable occasion of magnetic control saturable reactor reactance value.
Summary of the invention
Object of the present invention, exactly for solving the problem, provides a kind of transformer load to change, and can not have an impact to magnetic control saturable reactor reactance value, the Multifunction transformer that magnetic control is isolated.
For achieving the above object, the present invention adopts with the following method:
The Multifunction transformer that magnetic control is isolated, it is single-phase, comprises and is arranged on magnetic control saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil, and primary winding and secondary coil no-load voltage ratio equal transformer voltage ratio;
Described magnetic control saturable reactor comprise each AC coil and DC coil and control circuit, described each coil is not directly connected with described transformer primary winding and secondary coil, does not also access electric power system;
The direct current size of described control circuit adjustment magnetic control saturable reactor, realizes the size regulating primary winding reactance value continuously.
The primary winding of described transformer and secondary coil are arranged in two iron core column by a pair respectively, and the AC coil composition of forward serial connection;
Described magnetic control saturable reactor comprises the two groups of coils be positioned in two iron core column, and the structure of these two groups of coils is identical; Often organize coil and include the first AC coil, the second AC coil and a DC coil; The Same Name of Ends of described two first DC coils and the Same Name of Ends of described two DC coils link together;
The different name end of described two DC coils then one through forward thyristor, another is through reverse thyristor contact N in succession;
The first AC coil different name end in described each iron core column is all connected with the second AC coil Same Name of Ends in another iron core column; The different name termination tie point N of described two second coils;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles, realizes the size regulating two thyristor rectifier amounts continuously, and then adjusts the size of described two DC coil direct currents.
Two AC coil equal turn numbers of described primary winding; Two AC coil equal turn numbers of secondary coil; The turn ratio of each AC coil of primary winding and each AC coil of secondary coil equals the no-load voltage ratio of transformer primary winding and secondary coil.
The first AC coil be positioned in described magnetic control saturable reactor in same iron core column is connected in series a fly-wheel diode with between the second AC coil.
Each AC coil equal turn numbers in described magnetic control saturable reactor; Each DC coil equal turn numbers; Each DC coil number of turn is not equal to two times of the first AC coil number of turn in its place iron core column, to guarantee that the two ends of two thyristors have voltage to exist.
The AC coil that described transformer primary winding is connected in series by two pairs of forwards forms, and two AC coil of often pair of AC coil lay respectively in different iron core column; The two AC coil Same Name of Ends being in same position in two pairs of AC coil connect, and the different name end remaining two AC coil connects; Secondary coil is then connected in series AC coil by a pair forward be positioned in two iron core column and forms;
The saturated electric controller of described magnetic control is made up of two groups of DC coils, lays respectively in different iron core column; In each group of DC coil, in two iron core column, two DC coil Same Name of Ends of same position connect; In residue different name end, one, the two different name end of the DC coil of same group directly contact N in succession, another is through thyristor contact N in succession forward or backwards, but not corresponding with the DC coil that thyristor connects position in iron core column; Each thyristor is connected with control circuit; Control circuit controls the size at two IGBT group angles, realizes the size regulating two thyristor rectifier amounts continuously, and then adjusts the size of described two DC coil direct currents.
Each AC coil equal turn numbers of described primary winding; The each AC coil equal turn numbers of secondary coil;
The number of turn of each AC coil of primary winding and each AC coil turn ratio of secondary coil equal 2 times of the no-load voltage ratio of transformer primary winding and secondary coil.
In described primary winding, same iron core column is connected in series fly-wheel diode between two AC coil.
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 closed loop iron core has the iron core column that two sectional areas are equal at least, and these two iron core column have at least separately can form a magnetic flux closed loop without the other side's iron core column; Each coil of described magnetic control saturable reactor and described transformer is arranged in two iron core column.
Described closed loop iron core can be mutually do not have aisled two closed loop iron cores; Or one, the aisled closed loop iron core with three and above iron core column mutually, wherein 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.
Described closed loop iron core has magnet valve.
The Multifunction transformer that magnetic control is isolated, it adopt described in the isolated Multifunction transformer of the magnetic control of Multifunction transformer composition three-phase that isolates of single-phase magnetic control.
The Multifunction transformer that magnetic control is isolated, it adopt described in the isolated Multifunction transformer of the magnetic control of Multifunction transformer composition three-phase that isolates of single-phase magnetic control.
The Multifunction transformer that magnetic control is isolated, it adopt described in the isolated Multifunction transformer of the magnetic control of Multifunction transformer composition three-phase that isolates of single-phase magnetic control.
The invention has the beneficial effects as follows: the Multifunction transformer that magnetic control isolates, on the basis of a magnetic control saturable reactor iron core, realizes transformer and magnetic control saturable reactor two kinds of functions.Reduce outfit of equipment volume, alleviate outfit of equipment iron core weight, reduce outfit of equipment price, reduce outfit of equipment floor space.
Magnetic control saturable reactor reactance value regulates change, can not affect transformer load electric current, affect very little on leakage reactance between transformer primary winding and secondary coil.Transformer load curent change, can not have an impact to magnetic control saturable reactor reactance value.
Accompanying drawing explanation
Fig. 1 represents the Multifunction transformer that the first magnetic control is isolated.
Fig. 2 represents the Multifunction transformer that the second magnetic control is isolated.
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.
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
Embodiment:
Embodiment 1:
The structure of the Multifunction transformer that the first magnetic control isolates and connected mode are as shown in Figure 1.Comprise primary winding terminal I 1, 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 first magnetic control isolates is identical with the closed loop iron core of magnetic control saturable reactor.The Multifunction transformer closed loop iron core 5 that the first magnetic control isolates has two iron core column at least; There is the iron core column that two sectional areas are equal, all have DC coil and AC coil; 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 L1, AC coil L3, AC coil L5, AC coil L7 and DC coil L9, another root iron core column have AC coil L2, AC coil L4, AC coil L6, AC coil L8 and DC coil L10; The equal turn numbers of AC coil L1 and AC coil L2, the equal turn numbers of AC coil L3 and AC coil L4, the equal turn numbers of AC coil L5, AC coil L6, AC coil L7, AC coil L8, the equal turn numbers of DC coil L9 and DC coil L10.The turn ratio of AC coil L1 and AC coil L3 equals the no-load voltage ratio of transformer primary winding and secondary coil.The number of turn of DC coil L9 (L10) is not equal to two times of AC coil L5 (L6, L7, or the L8) number of turn.
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 1.
AC coil L1 connects as transformer primary winding with AC coil L2 forward, and remaining terminal connects primary winding terminal I 1 and primary winding terminal II 2 respectively.AC coil L3 connects as transformer secondary coil with AC coil L4 forward, and remaining terminal is connecting secondary coil terminals I3 and secondary coil terminal II 4 respectively.The transformer function of the Multifunction transformer that primary winding and secondary coil isolate as the first magnetic control.
AC coil L5 Same Name of Ends, AC coil L6 Same Name of Ends, DC coil L9 Same Name of Ends, DC coil L10 Same Name of Ends links together; AC coil L5 different name end connects AC coil L8 Same Name of Ends, and AC coil L6 different name end connects AC coil L7 Same Name of Ends; AC coil L7 different name end, AC coil L7 different name end link node N; DC coil L9 different name end is through forward thyristor D1 link node N, and DC coil L10 different name end is through reverse thyristor D1 link node N.
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.
AC coil L5 different name end is also connected diode D3 with between AC coil L7 Same Name of Ends.Diode D3 is called fly-wheel diode.Fly-wheel diode improves the equilibrium response of magnetic control saturable reactor afterflow characteristic and magnetic control saturable reactor coil voltage, and fly-wheel diode, in some application scenarios, can be removed.The effect of magnetic control saturable reactor fly-wheel diode is common knowledge, repeats no more.
If the isolated Multifunction transformer primary winding rated voltage of the first magnetic control is U1, the Multifunction transformer primary winding that the first magnetic control isolates the accesses the system that rated voltage is U1.AC coil L1 and AC coil L2 has exciting current to circulate, exchange flux is produced in closed loop iron core 5, this exchange flux produces induced electromotive force in AC coil L3 and AC coil L4, if the secondary coil that AC coil L3 is formed with AC coil L4 is connected load, then secondary coil provides load current for load.The transformer function of the Multifunction transformer that primary winding and secondary coil isolate as the first magnetic control.
The Multifunction transformer primary winding that the first magnetic control isolates accesses the system that rated voltage is U1.AC coil L1 and AC coil L2 has exciting current to circulate, in closed loop iron core 5, produce exchange flux; This exchange flux at AC coil L5, AC coil L6, AC coil L7, AC coil L8, DC coil L9, produce induced electromotive force in DC coil L10, the number of turn due to DC coil L9 is not equal to two times of AC coil L5 numbers of turn, and thyristor D1 and thyristor D2 two ends have 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 L9 and DC coil L10 equals zero.The Multifunction transformer primary winding that the first magnetic control isolates 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 L9 and DC coil L10 reaches design maximum value.The Multifunction transformer primary winding that the first magnetic control isolates 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 L9 and DC coil L10, realizes the size controlling the Multifunction transformer primary winding reactance value that the first magnetic control isolates.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 L9 and DC coil L10, realize the continuous adjustment of the Multifunction transformer primary winding reactance value that the first magnetic control isolates, the Multifunction transformer primary winding reactance value that the first magnetic control isolates regulates between the minimum and maximum, changes.
Can find out, closed loop iron core 5 shown in Fig. 1, AC coil L5, AC coil L7 and DC coil L9, AC coil L6, AC coil L8 and DC coil L10, thyristor D1 and thyristor D2, diode D3, control circuit 6, and their connected mode, actual is exactly the magnetic control saturable reactor directly not having electrical connection with electric power system.Magnetic control saturable reactor basis increases transformer primary winding and secondary coil, just constitutes the Multifunction transformer that the first magnetic control is isolated.Magnetic control saturable reactor and primary winding and secondary coil directly do not have electrical connection, directly do not have electrical connection with electric power system, so the load current change in primary winding and secondary coil, can not affect the reactance value of magnetic control saturable reactor.Although magnetic control saturable reactor does not directly have electrical connection with primary winding and secondary coil, but, as long as primary winding and secondary coil have voltage, just exchange flux is had in magnetic control saturable reactor closed loop iron core 5, the AC coil of magnetic control saturable reactor and DC coil just can obtain AC energy from magnetic control saturable reactor closed loop iron core 5 exchange flux, thus drive the work of magnetic control saturable reactor.
The Multifunction transformer secondary coil connection load that the first magnetic control is isolated, no matter load current increases, or reduce, all can not change the direct current size in DC coil L9 and DC coil L10, all can not affect the size of the Multifunction transformer reactance value that the first magnetic control isolates.
Experiment shows, direct current in DC coil L9 and DC coil L10 changes in the scope of magnetic control saturable reactor demand, the Multifunction transformer primary voltage isolate the first magnetic control and the no-load voltage ratio of secondary voltage affect very little, and the leakage reactance between the Multifunction transformer primary winding isolate the first magnetic control and secondary coil affects very little.Namely magnetic control saturable reactor reactance value regulates change, can not affect transformer load electric current, very little on the impact of transformer leakage reactance.
Closed loop iron core 5 can adopt magnet valve structure, to improve current harmonics characteristic.It is common knowledge that magnet valve structure improves magnetic control saturable reactor current harmonics characteristic, repeats no more.
The structure of the Multifunction transformer that the first magnetic control isolates shown in Fig. 1 and connected mode are the Multifunction transformer that single-phase magnetic control isolates.The Multifunction transformer that single-phase magnetic control isolates can be generalized to the Multifunction transformer that three-phase magnetic control is isolated.Promotion method is common knowledge, repeats no more.
Can adopt the method for series resistance in the Multifunction transformer that Fig. 1 the first magnetic control shown isolates, the transient process of the Multifunction transformer that the first magnetic control is isolated shortens, reaction speed is fast.The method of series resistance can with reference to CN201410353026.4; CN2014104617822.4; CN201410714156.6.
Thyristor D1 in parallel piezo-resistance (or voltage stabilizing didoe) all right with thyristor D2 two ends, the antihunt circuit of all right parallel resistance of thyristor D1 and thyristor D2 two ends and capacitances in series; To protect thyristor D1 and thyristor D2.This is common knowledge, repeats no more.Experiment shows, thyristor D1 and thyristor D2 two ends piezo-resistance in parallel (or voltage stabilizing didoe), can improve the reaction speed of magnetic control saturable reactor.
Can find out, closed loop iron core 5 shown in Fig. 1, AC coil L5, AC coil L7 and DC coil L9, AC coil L6, AC coil L8 and DC coil L10, thyristor D1 and thyristor D2, diode D3, control circuit 6, and their connected mode, the magnetic control saturable reactor formed is a kind of example.Magnetic control saturable reactor can have various structures and form, and other kind magnetic control saturable reactor bases increase primary winding and secondary coil, can form the Multifunction transformer that magnetic control is isolated equally.
In order to improve the effect of primary winding, primary winding also can have various ways.
Embodiment 2:
The present embodiment provides a kind of primary winding form different from embodiment 1, provides a kind of magnetic control saturable reactor form different from embodiment 1.The part identical with embodiment 1, repeats no more.Different parts, is expressed as follows.
The structure of the Multifunction transformer that the second magnetic control isolates and connected mode are as shown in Figure 2.Comprise primary winding terminal I 1, 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 magnetic control isolates is identical with the closed loop iron core of magnetic control saturable reactor.The Multifunction transformer closed loop iron core 5 that the second magnetic control isolates has two iron core column at least; There is the iron core column that two sectional areas are equal, all have DC coil and AC coil; 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 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; 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, the equal turn numbers of DC coil L17 and DC coil L20, the equal turn numbers of DC coil L18 and DC coil L19.The number of turn of DC coil L17 and DC coil L18 is unequal, and the number of turn of DC coil L19 and DC coil L20 is unequal.The turn ratio of AC coil L11 and AC coil L15 equals 2 times of the no-load voltage ratio of transformer primary winding and secondary coil.
AC coil L11 and AC coil L14 forward are connected between primary winding terminal I 1 and primary winding terminal II 2, and AC coil L12 and AC coil L13 forward are connected between primary winding terminal I 1 and primary winding terminal II 2.AC coil L15 connects as transformer secondary coil with AC coil L16 forward, and remaining terminal is connecting secondary coil terminals I3 and secondary coil terminal II 4 respectively.The transformer function of the Multifunction transformer that primary winding and secondary coil isolate as the second magnetic control.
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.Each AC coil on the Multifunction transformer that fly-wheel diode isolates for the second magnetic control and DC coil provide balance of voltage characteristic, and fly-wheel diode, in some application scenarios, can be removed.The effect of the effect of primary winding fly-wheel diode similar magnetic control saturable reactor fly-wheel diode, is common knowledge, repeats no more herein.
DC coil L17 Same Name of Ends connects DC coil L18 Same Name of Ends, DC coil L19 Same Name of Ends connects DC coil L20 Same Name of Ends, DC coil L17 different name end is through forward thyristor D1 link node N, DC coil L20 different name end is through reverse thyristor D1 link node N, DC coil L18 different name end link node N, DC coil L19 different name end link node N.
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 isolated Multifunction transformer primary winding rated voltage of the second magnetic control is U1, the Multifunction transformer primary winding that the first magnetic control isolates the 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.The transformer function of the Multifunction transformer that primary winding and secondary coil isolate as the second magnetic control.
The Multifunction transformer primary winding that the second magnetic control isolates 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, in closed loop iron core 5, produce exchange flux; This exchange flux produces and exchanges induced electromotive force in DC coil L17, DC coil L18, DC coil L19, DC coil L20, because the number of turn of DC coil L17 and DC coil L18 is unequal, thyristor D1 two ends have alternating voltage to exist, because the number of turn of DC coil L19 and DC coil L20 is unequal, 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 L17, DC coil L18, DC coil L19, DC coil L20 equals zero.The Multifunction transformer primary winding that the second magnetic control isolates has maximum reactance value Zmax.
When control circuit 6 controls the full conducting of thyristor D1 and thyristor D2, flow through DC coil L17, DC coil L18, DC coil L19, DC coil L20 direct current reach design maximum value.The Multifunction transformer primary winding that the second magnetic control isolates has minimum reactance value Zmin.
Control circuit 6 controls the size of thyristor D1 and thyristor D2 rectification flow, the size of direct current in DC coil L17, DC coil L18, DC coil L19, DC coil L20 can be controlled, realize the size controlling the Multifunction transformer primary winding reactance value that the second magnetic control isolates.The size of control circuit 6 continuous control thyristor D1 and thyristor D2 rectification flow, can continuous control DC coil L17, DC coil L18, the size of direct current in DC coil L19, DC coil L20, realize the continuous adjustment of the Multifunction transformer primary winding reactance value that the second magnetic control isolates, the Multifunction transformer primary winding reactance value that the second magnetic control isolates regulates between the minimum and maximum, changes.
Embodiment 2 and the part of embodiment 1 general character, repeat no more.
The Multifunction transformer that a kind of magnetic control of the present invention isolates can manufacture and design by prior art, can realize completely.There is broad prospect of application.
Claims (15)
1. the Multifunction transformer that magnetic control is isolated, it is characterized in that, it is single-phase, comprises and is arranged on magnetic control saturable reactor on same closed loop iron core and transformer; Wherein,
Described transformer is made up of primary winding and secondary coil, and primary winding and secondary coil no-load voltage ratio equal transformer voltage ratio;
Described magnetic control saturable reactor comprise each AC coil and DC coil and control circuit, described each coil is not directly connected with described transformer primary winding and secondary coil, does not also access electric power system;
The direct current size of described control circuit adjustment magnetic control saturable reactor, realizes the size regulating primary winding reactance value continuously.
2. the Multifunction transformer that a kind of magnetic control as claimed in claim 1 is isolated, it is characterized in that, the primary winding of described transformer and secondary coil are arranged in two iron core column by a pair respectively, and the AC coil composition of forward serial connection;
Described magnetic control saturable reactor comprises the two groups of coils be positioned in two iron core column, and the structure of these two groups of coils is identical; Often organize coil and include the first AC coil, the second AC coil and a DC coil; The Same Name of Ends of described two first DC coils and the Same Name of Ends of described two DC coils link together;
The different name end of described two DC coils then one through forward thyristor, another is through reverse thyristor contact N in succession;
The first AC coil different name end in described each iron core column is all connected with the second AC coil Same Name of Ends in another iron core column; The different name termination tie point N of described two second coils;
The control end connection control circuit of described two thyristors, control circuit controls the size at two IGBT group angles, realizes the size regulating two thyristor rectifier amounts continuously, and then adjusts the size of described two DC coil direct currents.
3. the Multifunction transformer that a kind of magnetic control as claimed in claim 2 is isolated, is characterized in that, two AC coil equal turn numbers of described primary winding; Two AC coil equal turn numbers of secondary coil; The turn ratio of each AC coil of primary winding and each AC coil of secondary coil equals the no-load voltage ratio of transformer primary winding and secondary coil.
4. the Multifunction transformer that a kind of magnetic control as claimed in claim 2 is isolated, it is characterized in that, the first AC coil be positioned in described magnetic control saturable reactor in same iron core column is connected in series a fly-wheel diode with between the second AC coil.
5. the Multifunction transformer that a kind of magnetic control as claimed in claim 2 is isolated, is characterized in that, each AC coil equal turn numbers in described magnetic control saturable reactor; Each DC coil equal turn numbers; Each DC coil number of turn is not equal to two times of the first AC coil number of turn in its place iron core column, to guarantee that the two ends of two thyristors have voltage to exist.
6. the Multifunction transformer that a kind of magnetic control as claimed in claim 1 is isolated, it is characterized in that, the AC coil that described transformer primary winding is connected in series by two pairs of forwards forms, and two AC coil of often pair of AC coil lay respectively in different iron core column; The two AC coil Same Name of Ends being in same position in two pairs of AC coil connect, and the different name end remaining two AC coil connects; Secondary coil is then connected in series AC coil by a pair forward be positioned in two iron core column and forms;
The saturated electric controller of described magnetic control is made up of two groups of DC coils, lays respectively in different iron core column; In each group of DC coil, in two iron core column, two DC coil Same Name of Ends of same position connect; In residue different name end, one, the two different name end of the DC coil of same group directly contact N in succession, another is through thyristor contact N in succession forward or backwards, but not corresponding with the DC coil that thyristor connects position in iron core column; Each thyristor is connected with control circuit; Control circuit controls the size at two IGBT group angles, realizes the size regulating two thyristor rectifier amounts continuously, and then adjusts the size of described two DC coil direct currents.
7. the Multifunction transformer that a kind of magnetic control as claimed in claim 6 is isolated, is characterized in that, each AC coil equal turn numbers of described primary winding; The each AC coil equal turn numbers of secondary coil;
The number of turn of each AC coil of primary winding and each AC coil turn ratio of secondary coil equal 2 times of the no-load voltage ratio of transformer primary winding and secondary coil.
8. the Multifunction transformer that a kind of magnetic control as claimed in claim 6 is isolated, is characterized in that, in described primary winding, same iron core column is connected in series fly-wheel diode between two AC coil.
9. the Multifunction transformer that a kind of magnetic control as described in claim 2 or 6 is isolated, 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.
10. the Multifunction transformer that a kind of magnetic control as described in as arbitrary in claim 1-9 is isolated, it is characterized in that, described closed loop iron core has the iron core column that two sectional areas are equal at least, and these two iron core column have at least separately can form a magnetic flux closed loop without the other side's iron core column; Each coil of described magnetic control saturable reactor and described transformer is arranged in two iron core column.
11. as arbitrary in claim 1-9 as described in the isolated Multifunction transformer of a kind of magnetic control, it is characterized in that, described closed loop iron core can be mutually do not have aisled two closed loop iron cores;
Or one, the aisled closed loop iron core with three and above iron core column mutually, wherein 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.
12. as arbitrary in claim 1-9 as described in the isolated Multifunction transformer of a kind of magnetic control, it is characterized in that, described closed loop iron core has magnet valve.
The Multifunction transformer that 13. 1 kinds of magnetic controls are isolated, is characterized in that, the Multifunction transformer that the magnetic control that the Multifunction transformer that it adopts single-phase magnetic control according to claim 1 to isolate forms three-phase isolates.
The Multifunction transformer that 14. 1 kinds of magnetic controls are isolated, is characterized in that, the Multifunction transformer that the magnetic control that the Multifunction transformer that it adopts single-phase magnetic control according to claim 2 to isolate forms three-phase isolates.
The Multifunction transformer that 15. 1 kinds of magnetic controls are isolated, is characterized in that, the Multifunction transformer that the magnetic control that the Multifunction transformer that it adopts single-phase magnetic control according to claim 6 to isolate forms three-phase isolates.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010431.0A CN104485824B (en) | 2015-01-08 | 2015-01-08 | Multifunctional transformer with isolated magnetic control |
| PCT/CN2015/075725 WO2016110013A1 (en) | 2015-01-08 | 2015-04-01 | Magnetically-controlled isolated multifunctional transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010431.0A CN104485824B (en) | 2015-01-08 | 2015-01-08 | Multifunctional transformer with isolated magnetic control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104485824A true CN104485824A (en) | 2015-04-01 |
| CN104485824B CN104485824B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510010431.0A Expired - Fee Related CN104485824B (en) | 2015-01-08 | 2015-01-08 | Multifunctional transformer with isolated magnetic control |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104485824B (en) |
| WO (1) | WO2016110013A1 (en) |
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| CN105141140A (en) * | 2015-07-31 | 2015-12-09 | 山东大学 | Improved multi-functional transformer |
| CN105261466A (en) * | 2015-10-20 | 2016-01-20 | 天津市天传鑫丰电气科技发展有限公司 | Novel magnetic-control adjustable reactor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104485824B (en) | 2017-01-18 |
| WO2016110013A1 (en) | 2016-07-14 |
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