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CN105529166A - Energy-saving on-load stepless voltage regulation transformer - Google Patents

Energy-saving on-load stepless voltage regulation transformer Download PDF

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Publication number
CN105529166A
CN105529166A CN201610109823.7A CN201610109823A CN105529166A CN 105529166 A CN105529166 A CN 105529166A CN 201610109823 A CN201610109823 A CN 201610109823A CN 105529166 A CN105529166 A CN 105529166A
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China
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mover
stator
iron core
winding iron
coil
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CN201610109823.7A
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CN105529166B (en
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黄中明
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening or mounting coils or windings on core, casing or other support
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
    • H02P13/10Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by moving core, coil winding, or shield, e.g. by induction regulator

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The invention relates to a transformer, in particular to an energy-saving on-load stepless voltage regulation transformer. The energy-saving on-load stepless voltage regulation transformer comprises an enclosure, a stator, a rotor, stator winding cores, rotor winding cores, rotor magnetic cores, stator coils, rotor coils, an extendable rod and a slider. One or more stator winding cores in equidistant parallel arrangement are coaxially arranged over a stator strip connecting piece, and each stator winding core is wound with one stator coil; the rotor winding cores as many as the stator winding cores and in equidistant parallel arrangement are coaxially arranged over a rotor strip connecting piece, and each rotor winding core is wound with one rotor coil, and the rotor magnetic cores are coaxially arranged on the rotor strip connecting piece and one sides of the rotor winding cores; both the stator and the rotor are mounted inside the enclosure, and the bottom of the stator is fixed to the enclosure. Effective sectional area is changed to regulate voltage, the structure is novel, and continuous, smooth and non-gradient output during voltage regulation can be achieved.

Description

Have and carry stepless voltage regulation energy-economic transformer
Technical field
The present invention relates to a kind of transformer, referring more particularly to one has a year stepless voltage regulation energy-economic transformer.
Background technology
All on our times have a year power regulator to be all do some taps in transformer primary winding side, and carry out pressure regulation step by step by on-load tap changer, this kind of voltage regulating mode exists following disadvantage.
1., by the voltage regulator of on-load tap changer pressure regulation, secondary output voltage has gradient, and the voltage that power load obtains is not too high is exactly too low, accurately can not export setting voltage value.Sometimes cause power consumption equipment normally to work, cause the power consumption equipment lost of life, and cause waste of energy;
2. Loading voltage regulator mechanical type or electronic power switch, frequently switches on or off the load current that voltage regulator passes through, and mechanical switch or electronic switch all very easily damage, and cause economic loss to user;
3. although there is a kind of induction voltage regulator voltage continuously adjustabe, but input and output voltage has phase difference, and complex structure, manufacturing cost are high, noise is large, again because of the reason of its project organization, the voltage regulator of less than 380 volts can only be manufactured, more high-tension voltage regulator can not be manufactured, because which limit its range of application.
Summary of the invention
Object of the present invention is exactly to overcome the problems referred to above, and providing one has a year stepless voltage regulation energy-economic transformer.
Of the present invention have a year stepless voltage regulation energy-economic transformer, divide magnetic core, stator coil, mover coil, expansion link and slide block to form by casing, stator, mover, stator winding iron core, mover winding iron core, mover, stator comprises stator strip connector, stator winding iron core and stator coil, on stator strip connector, square coaxial line is provided with the stator winding iron core of one or more equidistant parallels arrangement, and this stator winding iron core is all wound with stator coil; Mover comprises mover strip connector, mover winding iron core, mover divide magnetic core and mover coil, under mover strip connector, square coaxial line is provided with the mover winding iron core that and equidistant parallel equal with stator winding iron core quantity arranges, this mover winding iron core is all wound with mover coil, and on mover strip connector, the equal coaxial line in side of mover winding iron core is provided with mover and divides magnetic core; Stator and mover are all installed on casing internal and the bottom of stator and casing are fixed, and mover is located at above stator, and stator winding iron core, mover winding iron core and mover divide the end face of magnetic core to mate; The top of mover is fixed by one end of slide block and expansion link, and the other end and the casing inner wall of expansion link are fixed.
As a further improvement on the present invention, stator coil and mover coil include one or more primary winding and one or more secondary coil.
As a further improvement on the present invention, stator strip connector, mover strip connector, stator winding iron core, mover winding iron core and mover divide magnetic core to make by permeability magnetic material, and stator winding iron core, mover winding iron core and mover divide the end face of magnetic core to be coated with polytetrafluoro and epoxies glue lipoprotein mixture insulating barrier.
As a further improvement on the present invention, stator strip connector, stator winding iron core are integrated; Mover strip connector, mover winding iron core and mover divide magnetic core to be integrated.
Of the present invention have a year stepless voltage regulation energy-economic transformer, divide magnetic core, stator coil, mover coil, expansion link and slide block to form by casing, stator, mover, stator winding iron core, mover winding iron core, mover, stator comprises stator cyclic adapting piece, stator winding iron core and stator coil, equidistantly be provided with the stator winding iron core that one or more are arranged in parallel above stator cyclic adapting piece, this stator winding iron core is all wound with stator coil; Mover comprises mover cyclic adapting piece, mover winding iron core, mover divide magnetic core and mover coil, the mover winding iron core equal and arranged in parallel with stator winding iron core quantity is equidistantly provided with below mover cyclic adapting piece, this mover winding iron core is all wound with mover coil, between mover winding iron core, is equipped with mover divides magnetic core to be connected with mover cyclic adapting piece; Stator and mover are all installed on casing internal and the bottom of stator and casing are fixed, and mover is located at above stator, and stator winding iron core, mover winding iron core and mover divide the end face of magnetic core to mate; The top of mover and slide block frictional fit, one end of this slide block and expansion link is fixed, and the other end and the casing inner wall of expansion link are fixed.
As a further improvement on the present invention, stator coil and mover coil include one or more primary winding and one or more secondary coil.
As a further improvement on the present invention, stator cyclic adapting piece, mover cyclic adapting piece, stator winding iron core, mover winding iron core and mover divide magnetic core to make by permeability magnetic material, and stator winding iron core, mover winding iron core and mover divide the end face of magnetic core to be coated with polytetrafluoro and epoxies glue lipoprotein mixture insulating barrier.
As a further improvement on the present invention, stator cyclic adapting piece, stator winding iron core are integrated; Mover cyclic adapting piece, mover winding iron core and mover divide magnetic core to be integrated.
The method having year stepless voltage regulation energy-economic transformer described in realization of the present invention, it is characterized in that according to law of electromagnetic induction formula E=4.44FwBmS10-8, by changing net sectional area size between stator winding iron core and mover winding iron core, and then change output voltage.
Of the present invention have a year stepless voltage regulation energy-economic transformer, it is amassed by change relative cross-section and carries out pressure regulation, its novel structure, low cost of manufacture, natural life-span is long, sturdy and durable times of pressure regulation is many, contactless, export when can reach pressure regulation continuously, level and smooth, without gradient, accurate voltage, pure sinusoid voltage waveform, contactless have carry stepless adjustable voltage transformer without tap, mechanical switch, without electronic switch, no-spark, without wearing and tearing, reliability is strong, durable, explosion-proof, the place etc. of applicable bad environments.Be particularly suitable for high, accurate, continuous to Power supply requirement reliability, level and smooth pressure regulation, voltage stabilizing, voltage regulator strict, undistorted without harmonic wave to voltage waveform requirement once with secondary side without users such as phase differences.
Accompanying drawing explanation
Fig. 1 ~ Fig. 3 is the structure chart having slide transformer in year stepless voltage regulation energy-economic transformer of the present invention;
Fig. 4 is the installation diagram having year stepless voltage regulation energy-economic transformer of the present invention;
Fig. 5 ~ Fig. 7 is the structure chart having rotary transformer in year stepless voltage regulation energy-economic transformer of the present invention;
Fig. 8 is the structure chart having single-phase slide transformer in year stepless voltage regulation energy-economic transformer of the present invention.
There is a year stepless voltage regulation energy-economic transformer below in conjunction with accompanying drawing to of the present invention, be described further:
Of the present invention have a year stepless voltage regulation energy-economic transformer, all divided magnetic core 10, stator coil 6, mover coil 7, expansion link 8 and slide block 9 etc. to form by casing 1, stator 2, mover 3, stator winding iron core 4, mover winding iron core 5, mover, but slide transformer and rotary transformer can be divided into according to the difformity of stator 2 and mover 3.
Above-mentioned has the slide transformer carried in stepless voltage regulation energy-economic transformer, its stator 2 comprises stator strip connector 11, stator winding iron core 4 and stator coil 6, on stator strip connector 11, square coaxial line is provided with the stator winding iron core 4 of one or more equidistant parallels arrangement, this stator winding iron core 4 is all wound with stator coil 6, and stator strip connector 11 and stator winding iron core 4 as a whole, it is made up of the permeability magnetic material such as silicon steel sheet, non-crystaline amorphous metal.
Mover 2 comprises mover strip connector 12, mover winding iron core 5, mover divides magnetic core 10 and mover coil 7, mover strip connector 12 times square coaxial lines are provided with the mover winding iron core 5 that and equidistant parallel equal with stator winding iron core 4 quantity arranges, this mover winding iron core 5 is all wound with mover coil 7, and on mover strip connector 12, the equal coaxial line in side of mover winding iron core 5 is provided with mover and divides magnetic core 10, and mover strip connector 12, mover winding iron core 5 and mover divide magnetic core 10 as a whole, it is by silicon steel sheet, the permeability magnetic materials such as non-crystaline amorphous metal are made.
Stator 2 and mover 3 are all installed on casing 1 inside and the bottom of stator 2 and casing 1 are fixed, mover 3 is located at above stator 2, stator winding iron core 4, the specification of mover winding iron core 5 is identical, and spacing distance between stator winding iron core 4 is equal with the spacing distance between mover winding iron core 5, so stator winding iron core 4 mates with mover winding iron core 5 end face, and mover divides magnetic core 10 to be located at mover winding iron core 5 side, between the end face of its end face and mover winding iron core 5, only there is minimum gap, ensure that carrying out magnetic flux conductive when mover 3 misplaces with stator 2 makes mover 3 and stator 2 still form closed magnetic circuit.
The top of mover 3 is fixed by slide block 9 one end with expansion link 8, and the other end and casing 1 inwall of expansion link 8 are fixed, and expansion link 8 is electric expansion bar, and it can promote mover 3, thus change the relative position of mover 3 and stator 2.
Above-mentioned has the rotary transformer carried in stepless voltage regulation energy-economic transformer, its stator 2 comprises stator cyclic adapting piece 13, stator winding iron core 4 and stator coil 6, the stator winding iron core 4 that one or more are arranged in parallel is equidistantly provided with above stator cyclic adapting piece 13, this stator winding iron core 4 is all wound with stator coil 6, and stator cyclic adapting piece 13 and stator winding iron core 4 as a whole, it is made up of the permeability magnetic material such as silicon steel sheet, non-crystaline amorphous metal.
Mover 3 comprises mover cyclic adapting piece 14, mover winding iron core 5, mover divide magnetic core 10 and mover coil 7, mover winding iron core 5 equal and arranged in parallel with stator winding iron core 4 quantity is equidistantly provided with below mover cyclic adapting piece 14, this mover winding iron core 5 is all wound with mover coil 7, between mover winding iron core 5, be equipped with mover divides magnetic core 10 to be connected with mover cyclic adapting piece 14, and mover cyclic adapting piece 14, mover winding iron core 5 and mover divide magnetic core 10 as a whole, it is made up of the permeability magnetic material such as silicon steel sheet, non-crystaline amorphous metal.
Stator 2 and mover 3 are all installed on casing 1 inside and the bottom of stator 2 and casing 1 are fixed, mover 3 is located at above stator, stator winding iron core 4 is evenly distributed on stator cyclic adapting piece 13, mover winding iron core 5 is evenly distributed on below mover cyclic adapting piece 14, so stator winding iron core 4 mates with mover winding iron core 5 end face, and mover divides magnetic core 10 to be located between mover winding iron core 5, between its end face with the end face of the mover winding iron core 5 mated, only there is minimum gap, ensure that carrying out magnetic flux conductive when mover 3 misplaces with stator 2 makes mover 3 and stator 2 still form closed magnetic circuit.
The top of mover 3 and slide block 9 frictional fit, this slide block 9 is fixed with one end of expansion link 8, and the other end and casing 1 inwall of expansion link 8 are fixed, and expansion link 8 is electronic expansion link, and it can promote mover 3, thus changes the relative position of mover 3 and stator 2.
Stator coil 6 comprises a primary winding and multiple secondary coil, and the secondary coil on stator winding iron core 4 exports fixed voltage, and the secondary coil on mover winding iron core 5 exports adjustable voltage; When stator winding iron core 4 is wound with part primary winding or multiple secondary coil simultaneously, and when mover winding iron core 5 is wound with primary winding, the secondary coil in the stator coil 6 on stator winding iron core 4 exports adjustable voltage; Stator winding iron core 4 is wound with primary winding or primary winding, secondary coil shares coil, and mover winding iron core 5 is wound with primary winding, secondary coil or primary winding, secondary coil shares coil, and primary winding, secondary coil are with just connecing or reversal connection.
The quantity of stator winding iron core 4, mover winding iron core 5 determines originally there is the number of phases of carrying stepless voltage regulation energy-economic transformer, and as shown in Figure 4, when having three pairs of stator winding iron cores 4 and mover winding iron core 5 in slide transformer, it is three-phase slide transformer; As shown in Figure 8, when stator winding iron core 4 in slide transformer and mover winding iron core 5 are a pair, for single-phase slide transformer, the stator 2 in single-phase slide transformer and mover 3 also need class and divides core structure 17, form closed magnetic circuit by between stator 2 and mover 3.
The end face of magnetic core 10 is divided to be coated with polytetrafluoro and epoxies glue lipoprotein mixture insulating barrier at stator winding iron core 4, mover winding iron core 5 and mover.
Of the present invention have a year stepless voltage regulation energy-economic transformer, and its concrete using method is as follows:
This device can make voltage regulator that is single-phase, heterogeneous and three-phase, can make the voltage regulator of dry type or oil immersion.
According to the formula E=4.44FwB that the conversion of law of electromagnetic induction formula obtains ms10 -8(wherein E is electromotive force, unit is V, F is ac frequency, unit is Hz, w is coil turn, B mbe iron core net sectional area for magnetic flux density maximum, unit are Gs, S, unit is cm 2) learn, electromotive force E can be changed by iron core net sectional area S in change formula, thus carry out pressure regulation, for three-phase slide transformer structure, it is upper mover 3, lower stator 2 structure, the relative area size between two iron cores is changed by the relative motion between mover winding iron core 5 and stator winding iron core 4, thus reach the object changing net sectional area S, as shown in Figure 1, when the end face of the mover winding iron core 5 corresponding with on mover 3 when the end face being positioned at the stator winding iron core 4 on stator 2 overlaps completely, as passed into electric current to the primary winding in the stator coil 6 of the leftmost side, then stator winding iron core 4 will induce magnetic flux, magnetic flux enters D by A, through G, P to H, at H point minute two-way, one route H enters B through E, again through K, J gets back to A, complete the first closed magnetic circuit, another route H enters C through Q, I to F., get back to A after L, K, J and complete the second closed magnetic circuit, other two facies principles are identical, under this state, stator winding iron core 4 all magnetic flux all senses on corresponding mover winding iron core 5, so now mover coil 7 induced voltage is the highest, this device output voltage is also the highest.
As shown in Figure 2, stator 2 slides, mover winding iron core 5 on it moves on to the end face of stator winding iron core 4 and mover winding iron core 5, mover when dividing the end face of magnetic core 10 respectively to account for the position of half, for the stator winding iron core 4 of the leftmost side, the magnetic flux produced of stator winding iron core 4 is divided into two-way after its end face, two-way is divided into after A end face, one route A enters D, through G to P, there is half on this road by D because of the main flux that A produces, and therefore on secondary coil 4, induced voltage is the half of induction full voltage; Another road, enters M to P by A, and four tunnels, because of coil on M, so only complete magnetic circuit by-passing, are divided by P in this road; The first via enters B by P through H, E, secondary route P through H, Q, N, enter B, get back to A through K, J behind two route B a road and complete the first closed magnetic circuit, 3rd route P enters C through H, Q, I, F, 4th route P enters C through H, Q, I, R, O, get back to A through L, K, J behind two route C a road and complete the second closed magnetic circuit, other two facies principles are identical.So when the end face of stator winding iron core 4 and mover winding iron core 5, mover divide the end face of magnetic core 10 respectively to account for half position, stator winding iron core 4 magnetic flux has half to sense mover winding iron core 5, the induced voltage that mover coil 7 obtains is the half of full voltage, and now this device output voltage is pressure regulation voltage 1/2nd.
As shown in Figure 3, stator 2 continues to slide, when it moves to and makes the end face of stator winding iron core 4 and corresponding mover divide the end face of magnetic core 10 to overlap completely, whole magnetic fluxs that then stator winding iron core 4 produces enter by its end face the end face that mover divides magnetic core 10, and for leftmost side stator winding iron core 4, whole magnetic fluxs that this stator winding iron core 4 produces enter M end face by A end face, two-way is divided into by Q through P, H to Q, one route Q to N, enters B and gets back to A through K, J, completes the first closed magnetic circuit; Another route Q, through I, R to O, enters C and gets back to A through L, K, J, completes the second closed magnetic circuit, and other two facies principle is identical.So the mover winding iron core 5 of stator 2 move on to make the end face of stator winding iron core 4 and mover divide the end face of magnetic core 10 to overlap completely time, the magnetic flux that stator winding iron core 4 produces is not all through mover winding iron core 4, therefore the non-inductive voltage of mover coil 7, now the output voltage of this device is zero.
Rotary transformer is identical with the operation principle of slide transformer.

Claims (9)

1. have and carry stepless voltage regulation energy-economic transformer, by casing (1), stator (2), mover (3), stator winding iron core (4), mover winding iron core (5), mover divides magnetic core (10), stator coil (6), mover coil (7), expansion link (8) and slide block (9) are formed, it is characterized in that stator (2) comprises stator strip connector (11), stator winding iron core (4) and stator coil (6), the upper square coaxial line of stator strip connector (11) is provided with the stator winding iron core (4) of one or more equidistant parallels arrangement, this stator winding iron core (4) is all wound with stator coil (6), mover (3) comprises mover strip connector (12), mover winding iron core (5), mover divide magnetic core (10) and mover coil (7), under mover strip connector (12), square coaxial line is provided with the mover winding iron core (5) that and equidistant parallel equal with stator winding iron core (4) quantity arranges, this mover winding iron core (5) is all wound with mover coil (7), and the equal coaxial line in side that is upper at mover strip connector (12), mover winding iron core (5) is provided with mover and divides magnetic core (10), stator (2) and mover (3) are all installed on casing (1) inside and the bottom of stator (2) and casing (1) are fixed, mover (3) is located at stator (2) top, and stator winding iron core (4), mover winding iron core (5) and mover divide the end face of magnetic core (10) to mate, the top of mover (3) is fixed by slide block (9) one end with expansion link (8), and the other end and casing (1) inwall of expansion link (8) are fixed.
2. according to claim 1 have a year stepless voltage regulation energy-economic transformer, it is characterized in that stator coil (6) and mover coil (7) include one or more primary winding and one or more secondary coil.
3. according to claim 1 have a year stepless voltage regulation energy-economic transformer, it is characterized in that stator strip connector (11), mover strip connector (12), stator winding iron core (4), mover winding iron core (5) and mover divide magnetic core (10) to make by permeability magnetic material, and stator winding iron core (4), mover winding iron core (5) and mover divide the end face of magnetic core (10) to be coated with polytetrafluoro and epoxies glue lipoprotein mixture insulating barrier.
4. have according to claim 1 or 3 and carry a stepless voltage regulation energy-economic transformer, it is characterized in that stator strip connector (11), stator winding iron core (4) is integrated; Mover strip connector (12), mover winding iron core (5) and mover divide magnetic core (10) to be integrated.
5. have and carry stepless voltage regulation energy-economic transformer, by casing (1), stator (2), mover (3), stator winding iron core (4), mover winding iron core (5), mover divides magnetic core (10), stator coil (6), mover coil (7), expansion link (8) and slide block (9) are formed, it is characterized in that stator (2) comprises stator cyclic adapting piece (13), stator winding iron core (4) and stator coil (6), stator cyclic adapting piece (13) top is equidistantly provided with one or more stator winding iron cores (4) arranged in parallel, this stator winding iron core (4) is all wound with stator coil (6), mover (3) comprises mover cyclic adapting piece (14), mover winding iron core (5), mover divide magnetic core (10) and mover coil (7), mover cyclic adapting piece (14) below is equidistantly provided with the mover winding iron core (5) equal and arranged in parallel with stator winding iron core (4) quantity, this mover winding iron core (5) is all wound with mover coil (7), between mover winding iron core (5), is equipped with mover divides magnetic core (10) to be connected with mover cyclic adapting piece (14), stator (2) and mover (3) are all installed on casing (1) inside and the bottom of stator (2) and casing (1) are fixed, mover (3) is located at stator (2) top, and stator winding iron core (4), mover winding iron core (5) and mover divide the end face of magnetic core (10) to mate, the top of mover (3) and slide block (9) frictional fit, this slide block (9) is fixed with one end of expansion link (8), and the other end and casing (1) inwall of expansion link (8) are fixed.
6. according to claim 5 have a year stepless voltage regulation energy-economic transformer, it is characterized in that stator coil (6) and mover coil (7) include one or more primary winding and one or more secondary coil.
7. according to claim 5 have a year stepless voltage regulation energy-economic transformer, it is characterized in that stator cyclic adapting piece (13), mover cyclic adapting piece (14), stator winding iron core (4), mover winding iron core (5) and mover divide magnetic core (10) to make by permeability magnetic material, and stator winding iron core (4), mover winding iron core (5) and mover divide the end face of magnetic core (10) to be coated with polytetrafluoro and epoxies glue lipoprotein mixture insulating barrier.
8. having according to claim 3 or 7 carries a stepless voltage regulation energy-economic transformer, it is characterized in that stator cyclic adapting piece (13), stator winding iron core (4) is integrated; Mover cyclic adapting piece (14), mover winding iron core (5) and mover divide magnetic core (10) to be integrated.
9. realize claim 1 and the method having year stepless voltage regulation energy-economic transformer according to claim 5, it is characterized in that according to law of electromagnetic induction formula E=4.44FwB ms10 -8, by changing net sectional area size between stator winding iron core (4) and mover winding iron core (5), and then change output voltage.
CN201610109823.7A 2016-02-29 2016-02-29 There is load stepless voltage regulation energy-economic transformer Active CN105529166B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019054158A (en) * 2017-09-15 2019-04-04 ファナック株式会社 Three-phase transformer
JP2019179929A (en) * 2019-06-21 2019-10-17 ファナック株式会社 Three-phase transformer
CN112017852A (en) * 2020-08-18 2020-12-01 河北森蔚电气科技有限公司 Contactless stepless transformer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031496A (en) * 1973-07-06 1977-06-21 Hitachi, Ltd. Variable inductor
DE2605300A1 (en) * 1976-02-11 1977-08-18 Maerklin & Cie Gmbh Geb Transformer for toys with infinitely variable output voltage - has movable yoke which swivels from position to change magnetic flux when changing output voltage
CN104319085A (en) * 2014-11-14 2015-01-28 任晓东 Contactless on-load stepless voltage regulating transformer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031496A (en) * 1973-07-06 1977-06-21 Hitachi, Ltd. Variable inductor
DE2605300A1 (en) * 1976-02-11 1977-08-18 Maerklin & Cie Gmbh Geb Transformer for toys with infinitely variable output voltage - has movable yoke which swivels from position to change magnetic flux when changing output voltage
CN104319085A (en) * 2014-11-14 2015-01-28 任晓东 Contactless on-load stepless voltage regulating transformer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019054158A (en) * 2017-09-15 2019-04-04 ファナック株式会社 Three-phase transformer
US10692650B2 (en) 2017-09-15 2020-06-23 Fanuc Corporation Three-phase transformer
JP2019179929A (en) * 2019-06-21 2019-10-17 ファナック株式会社 Three-phase transformer
CN112017852A (en) * 2020-08-18 2020-12-01 河北森蔚电气科技有限公司 Contactless stepless transformer

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