CN201444443U - Transformer capable of controlling part of voltage - Google Patents
Transformer capable of controlling part of voltage Download PDFInfo
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- CN201444443U CN201444443U CN2009200183191U CN200920018319U CN201444443U CN 201444443 U CN201444443 U CN 201444443U CN 2009200183191 U CN2009200183191 U CN 2009200183191U CN 200920018319 U CN200920018319 U CN 200920018319U CN 201444443 U CN201444443 U CN 201444443U
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Abstract
The utility model provides a transformer. The transformer realizes voltage regulation by controlling part of voltage. A pair of magnetic columns of two square-shaped iron cores of a single-phase transformer is arranged in an overlaid or parallel manner so as to form a structure shaped like a Chinese character 'ri'; a second secondary winding is mounted outside two overlaid or parallel magnetic columns; two primary windings are mounted outside the other two magnetic column respectively; a first secondary winding and a third secondary winding are mounted outside the latter two magnetic columns; the first secondary winding, the second secondary winding and the third secondary winding are connected in sequence; a first primary winding is connected with a supply circuit; a second primary winding is connected with a variable power source; and the output voltage of the variable power source changes so as to alter the magnetic flux in the second and the third secondary windings and stabilize the series output voltage of the first, the second and the third secondary windings.
Description
Art
The utility model is related to a kind of transformer, especially control section voltage and realizes the transformer of voltage stabilizing.
Background technology
At present, former and deputy winding of the known transformer by iron core and outside iron core is constituted, and the iron circuit in former and deputy winding is identical, and the energy of power input primary winding can transfer to auxiliary winding completely substantially by the iron circuit.Common voltage stabilizing-insulating power supply has series winding transformer-compensation voltage-stabilized power supply of Switching Power Supply-isolating transformer, and this mode needs the essentially identical transformer of two power and a power and the essentially identical Switching Power Supply of the transformer；CN02135780.3 utility model patents propose that one kind installs compensative winding additional on transformer core main magnetic circuit, compensative winding, which is acted on, with Switching Power Supply realizes voltage stabilizing, this method is mainly used in load voltage change caused by compensation load change, and load voltage change caused by power source change is relatively difficult to compensate for, voltage stabilizing purpose is realized.
Actually used middle transformer has a voltage stabilized range, such as from supply voltage than rated voltage reduction by 20% to increasing 15%, it ensure that output voltage close to rated value in the range of this, so it is contemplated that being only that portion voltage is controlled i.e. achievable voltage stabilizing to transformer portion power, than controlling whole power or portion voltage to realize, voltage stabilizing is saved.
Utility model content
In order to overcome existing series winding transformer-compensation voltage-stabilized power supply of Switching Power Supply-isolating transformer to use two transformers, the deficiency that mains voltage variations cause load voltage to change is difficult to compensate for CN02135780.3 utility model patent proposed method, reach control section power i.e. portion voltage purpose, the utility model proposes use two primary winding of size, big primary winding is directly connected to not control with power supply, small primary winding is controlled, reaches that control section power i.e. portion voltage realizes the combined transformer of voltage stabilizing；Or with small one and large one two transformers, the output winding of described two transformers of size is in sequential series, the big transformer primary winding is connected with power supply, and the small transformers primary winding is connected with Switching Power Supply, only controls the small transformers to realize the combined transformer of voltage stabilizing.
The utility model solves the technical scheme that its technical problem is used
For single-phase transformer, a pair of magnetic poles of two " mouth " font iron cores are overlapped, two " mouth " font iron core compositions are not in " day " font of a plane, and the medial lateral line of " day " font is overlapping magnetic pole；By transformer part 2 auxiliary winding outside the magnetic pole of the overlapping, i.e., outside the medial lateral line of " day " font；Outside magnetic pole beyond magnetic pole where transformer the 1st, the 2nd two primary winding are attached separately into the auxiliary winding, i.e., outside upper and lower two horizontal lines of " day " word；The two ends of 1st primary winding are connected with two single phase power supply power lines respectively, and magnetic flux phi is produced in this primary winding iron circuit where itself1, the two ends of the 2nd primary winding are connected with two output stages of Switching Power Supply respectively, and magnetic flux phi is produced in this primary winding iron circuit where itself2, the magnetic flux phi in part 2 auxiliary winding3It is exactly Φ3=Φ1+Φ2；If the part 2 auxiliary winding number of turn is N32, part 2 auxiliary winding is interior to produce induced electromotive force e32=N32dΦ3/ dt=N32d(Φ1+Φ2)/dt；In order to reduce primary winding leakage inductance, by part 1 auxiliary winding N31In magnetic pole where the 1st primary winding, N31Interior generation induced electromotive force e31=N31dΦ1/dt；By third portion auxiliary winding N33In magnetic pole where the 2nd primary winding, N33Interior generation induced electromotive force e33=N33dΦ2/dt；By N31、N32、N33It is in sequential series, N31、N32、N33Total output electromotive force be exactly e31+e32+e33, as the timing Φ of power supply voltage one1Basic to determine, Switching Power Supply produces magnetic flux phi2Size and phase all can be by Switching Power Supply control, so e32、e33Size can be by Switching Power Supply control, total output electromotive force can be controlled partly.
A pair of magnetic poles of above-mentioned two " mouth " font iron core can also be mounted side by side, " day " font of two " mouth " font iron core compositions in a plane, the medial lateral line of " day " font is magnetic pole side by side, and two " mouth " font iron core magnetic column sections can be determined to save material by design power；It is by transformer portion auxiliary winding outside the magnetic pole side by side, i.e., other same as described above outside the medial lateral line of " day " font.
Also small one and large one two transformers can be used, the output winding of described two transformers of size is in sequential series, total output voltage is two transformer output voltage sums of size；The big transformer primary winding is connected with power supply, and the small transformers primary winding is connected with Switching Power Supply, only controls the small transformers to realize voltage stabilizing.
For three-phase transformer, three pairs of magnetic poles of two " day " font iron cores are overlapped, two " day " font iron cores composition not plane "
" type, "
" centre " day " of type is two " day " font iron core lamination portions；By three transformer part 2 auxiliary winding N32It is attached separately to outside three magnetic poles of " day " font of the overlapping, that is, outside three medial lateral lines for being attached separately to " day " font iron core of the overlapping；By three primary winding N of transformer the 1st1Described in being attached separately to "
" type the left side " day " font iron core three medial lateral lines outside；By three primary winding of transformer the 2nd be attached separately to it is described "" type the right " day " font iron core three medial lateral lines outside；Three primary winding N outside three medial lateral lines of the left side " day " font iron core1It is connected respectively with three phase supply power line, these three primary winding N1Magnetic flux phi is produced in the iron core magnetic pole where itself1, three primary winding N outside three medial lateral lines of the right " day " font iron core2It is connected respectively with three output electrodes of threephase switch power supply, these three primary winding N2Magnetic flux phi is produced in the iron core magnetic pole where itself2, three auxiliary winding N32In magnetic flux phi32It is exactly Φ32=Φ1+Φ2, an auxiliary winding N32Interior generation induced electromotive force e32=N32dΦ3/ dt=N32d(Φ1+Φ2)/dt；In order to reduce primary winding leakage inductance, by three transformer part 1 auxiliary winding N31In magnetic pole where the 1st primary winding, N31Interior generation induced electromotive force e31=N31dΦ1/dt；By three transformer third portion auxiliary winding N33In magnetic pole where the 2nd primary winding, N33Interior generation induced electromotive force e33=N33dΦ2/dt；By N of the three-phase transformer with phase31、N32、N33It is in sequential series, the N of three-phase transformer31、N32、N33Total output electromotive force be exactly e31+e32+e33, as the timing Φ of three phase supply supply voltage one1Basic to determine, threephase switch power supply produces magnetic flux phi2Size and phase all can be by Switching Power Supply control, so the e of three-phase transformer32、e33Size can be by threephase switch power supply, and three-phase transformer always exports electromotive force and can partly controlled.
Also small one and large one two three-phase transformers can be used, the same phase output winding of described two three-phase transformers of size is in sequential series, total output voltage of three-phase transformer is two three-phase transformers of size with phase output voltage sum；The big Three-Phase Transformer primary winding is connected with three phase supply power supply, and the small transformers three-phase primary winding is connected with threephase switch power supply, only controls the three-phase small transformers to realize three-phase voltage stabilizing.
The beneficial effects of the utility model
Compared with existing series winding transformer-compensation voltage-stabilized power supply of Switching Power Supply-isolating transformer, have the advantages that to save iron core, winding；Compared with CN02135780.3 utility model patent proposed method, have the advantages that auxiliary winding output voltage can be far above or far below power supply voltage.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is control single-phase transformer one embodiment schematic diagram in part of the present utility model；
Fig. 2 is control single-phase transformer one embodiment iron core side view in part of the present utility model；
Fig. 3 is control second embodiment schematic diagram of single-phase transformer in part of the present utility model；
Fig. 4 is control the 3rd embodiment schematic diagram of single-phase transformer in part of the present utility model；
Fig. 5 is first and third embodiment band loss protecting schematic diagram of part control single-phase transformer of the present utility model；
Fig. 6 is the 4th embodiment schematic diagram of the present utility model with loss protecting；
Fig. 7 is control the 5th embodiment schematic diagram of three-phase transformer in part of the present utility model；
Fig. 8 is control the 5th embodiment side view of three-phase transformer in part of the present utility model；
Fig. 9 is 5th embodiment band loss protecting schematic diagram of three-phase transformer of the present utility model；
Figure 10 is the 6th embodiment schematic diagram of the present utility model with loss protecting.
In Fig. 1, 1. the 1st primary winding electric current, 2. the 1st primary winding, 3. the magnetic flux of the 1st primary winding electric current, 4. iron core column in the 1st primary winding, 5. the magnetic pole that two " mouth " font iron cores are stacked, 6. iron core column in the 2nd primary winding, 7. Switching Power Supply, 8. the total output voltage of auxiliary winding, 9. supply line, 10. it is stacked the 1st primary winding current flux amount in iron core column, 11. it is stacked the 2nd primary winding current flux amount in iron core column, 12. it is stacked outer 2nd auxiliary winding of iron core column, 13. the 2nd primary winding current flux amount, 14. the 2nd primary winding, 15. switch power supply current, 16. outer 1st auxiliary winding of iron core column in the 1st primary winding, 17. outer 3rd auxiliary winding of iron core column in the 2nd primary winding.
In fig. 2, iron core in iron core in 4. the 1st primary winding, 6. the 2nd primary winding.
In figure 3, the magnetic pole side by side of 5. two " mouth " font iron cores, 10. the 1st primary winding current flux amounts in iron core magnetic pole side by side, 11. the 2nd primary winding current flux amounts in iron core magnetic pole side by side, 12. outer auxiliary winding of iron core magnetic pole side by side are other identical with Fig. 1.
In Fig. 4, the magnetic pole side by side of 5. two " mouth " font iron cores, 10. the 1st primary winding current flux amounts in iron core magnetic pole side by side, 11. the 2nd primary winding current flux amounts in iron core magnetic pole side by side, 12. outer 2nd auxiliary winding of iron core magnetic pole side by side are other identical with Fig. 1.
In Figure 5,1.~14. is identical with Fig. 1,15. contactor or pulling relay coil, 16. switching power source control circuits, 17. pull-in winding wires, 18. contactor or relay normally-closed contact, 19. control of the pull-in winding to normally-closed contact, 20. load voltage sample circuits, the output of 21. load voltage sample circuits, 22. the 1st auxiliary winding, 23. the 3rd auxiliary winding.
In figure 6, 1. main transformer primary winding electric current, 2. main transformer primary winding, 3. main transformer core, 4. main transformer auxiliary winding, 5. compensator transformer primary winding, 6. compensator transformer iron core, 7. compensator transformer auxiliary winding, 8. transformer exports total voltage, 9. supply line, 10. Switching Power Supply, 15. contactor or pulling relay coil, 16. switching power source control circuit, 17. pull-in winding wire, 18. contactor or relay normally-closed contact, 19. control of the pull-in winding to normally-closed contact, 20. load voltage sample circuit, 21. the output of load voltage sample circuit.
In the figure 7, the primary winding of 1.A phases the 1st, iron core column where the primary winding of 2.A phases the 1st, the primary winding of 3.B phases the 1st, iron core column where the primary winding of 4.B phases the 1st, the primary winding of 5.C phases the 1st, iron core column where the primary winding of 6.C phases the 1st, 7. the primary winding asterism of three-phase the 1st, 8. three-phase auxiliary winding is always exported, the auxiliary winding of 9.A phases the 2nd, iron core column where the auxiliary winding of 10.A phases the 2nd, the auxiliary winding of 11.B phases the 2nd, iron core column where the auxiliary winding of 12.B phases the 2nd, the auxiliary winding of 13.C phases the 2nd, iron core column where the auxiliary winding of 14.C phases the 2nd, the primary winding of 16.A phases the 2nd, iron core column where the primary winding of 17.A phases the 2nd, the primary winding of 18.B phases the 2nd, iron core column where the primary winding of 19.B phases the 2nd, the primary winding of 20.C phases the 2nd, iron core column where the primary winding of 21.C phases the 2nd, 22. the primary winding asterism of three-phase the 2nd, 23. three-phase power line, 24. threephase switch power supply, the auxiliary winding of 25.A phases the 1st, the auxiliary winding of 26.B phases the 1st, the auxiliary winding of 27.C phases the 1st, the auxiliary winding of 28.A phases the 3rd, the auxiliary winding of 29.B phases the 3rd, the auxiliary winding of 30.C phases the 3rd, 31. the auxiliary winding asterism of three-phase the 3rd.
In fig. 8, iron core in laminated core in iron core in 1. the 1st primary winding, 2. the 1st primary winding, 3. the 2nd auxiliary winding, 4. the 2nd auxiliary winding, 5. the 2nd primary winding, 6. the 2nd primary winding, 7. the 1st auxiliary winding, 8. the 3rd auxiliary winding.
In fig .9,1.~31. is identical with Fig. 6,32. three-phase output voltage sample circuit, 33. three-phase output voltage sample circuit is exported, 34. switching power source control circuit, 35. control control of the circuit to Switching Power Supply, 36. contactor or pulling relay coil, 37. contactor or pulling relay coil wire, 38. control of the pull-in winding to the normally closed main contacts of three-phase, 39. contactor or the normally closed main contacts of relay three-phase, the connection that 40. three phase mains pass through the normally closed main contacts of three-phase and the primary winding of three-phase the 2nd.
In Fig. 10, 1. three-phase main transformer A phase primary winding, 2. three-phase main transformer A phase iron core columns, 3. three-phase main transformer B phase primary winding, 4. three-phase main transformer B phase iron core columns, 5. three-phase main transformer C phase primary winding, 6. three-phase main transformer C phase iron core columns, 7. three-phase main transformer three-phase primary winding asterism, 8. always export three-phase voltage, 9. three-phase main transformer A phase auxiliary winding, 10. three-phase main transformer B phase auxiliary winding, 11. three-phase main transformer C phase auxiliary winding, 12. three-phase compensator transformer A phase primary winding, 13. three-phase compensator transformer A phase iron core columns, 14. three-phase compensator transformer B phase primary winding, 15. three-phase compensator transformer B phase iron core columns, 16. three-phase compensator transformer C phase primary winding, 17. three-phase compensator transformer C phase iron core columns, 18. three-phase compensator transformer A phase auxiliary winding, 19. three-phase compensator transformer B phase auxiliary winding, 20. three-phase compensator transformer C phase auxiliary winding, 21. three-phase compensator transformer auxiliary winding asterism, 22. three-phase compensator transformer primary winding asterism, 24. Switching Power Supply, 32. three-phase output voltage sample circuit, 33. three-phase output voltage sample circuit is exported, 34. switching power source control circuit, 35. control control of the circuit to Switching Power Supply, 36. contactor or pulling relay coil, 37. contactor or pulling relay coil wire, 38. control of the pull-in winding to the normally closed main contacts of three-phase, 39. contactor or the normally closed main contacts of relay three-phase, 40. three phase mains passes through the connection of the normally closed main contacts of three-phase and the primary winding of three-phase the 2nd.
Embodiment
In Fig. 1,2 magnetic poles of 2 " mouth " font iron cores are overlapped into a thick magnetic pole (5), the 2nd auxiliary winding N is set with outside in the thick magnetic pole (5)32(12)；Magnetic pole (4) is not overlapped in master's " mouth " font iron core is set with the 1st primary winding N outside1And the 1st auxiliary winding N (2)31(16), the 1st primary winding N1(2) two wires are connected with Liang Gen supply lines (9), and the 1st primary winding N is flowed into from the supply line (9)1(2) electric current (1) is in the primary winding N1And the 1st auxiliary winding N (2)31(16) main flux Φ is produced in1(3), the 1st auxiliary winding N31(16) have and reduce main flux Φ1(3) leakage field is acted on；Magnetic pole (6) is not overlapped in compensation " mouth " font iron core is set with the 2nd primary winding N outside2And the 3rd auxiliary winding N (14)33(17), the 2nd primary winding N2(14) two wires are connected with two output electrodes of Switching Power Supply (7), and the 2nd primary winding N is flowed into from the Switching Power Supply (7)2(14) electric current (15) is in the primary winding N2And the 3rd auxiliary winding N (14)33(17) compensation magnetic flux Φ is produced in2(13), the 3rd auxiliary winding N33(17) have and reduce compensation magnetic flux Φ2(13) leakage field is acted on；By the 1st auxiliary winding N31(16), the 2nd auxiliary winding N32And the 3rd auxiliary winding N (12)33(17) it is in sequential series；The main flux (3) is being overlapped in thick magnetic pole (5) as magnetic flux Φ1(10), the compensation magnetic flux (13) is being overlapped in thick magnetic pole (5) as magnetic flux Φ2(11), the 2nd auxiliary winding N32(12) interior total magnetic flux Φ is the main flux Φ1(10) with compensation magnetic flux Φ2(11) sum, the compensation magnetic flux Φ is changed with the Switching Power Supply (7)2(11), (13), so that it may change the 2nd auxiliary winding N32(12) interior total magnetic flux Φ and the 3rd auxiliary winding N33(17) compensation magnetic flux Φ in2(13), so that it may change the 1st auxiliary winding N31(16), the 2nd auxiliary winding N32And the 3rd auxiliary winding N (12)33(17) output voltage (8) of series connection；2 " mouth " fonts core section product, the 1st primary winding N1(2), the 2nd primary winding N2(14), the 1st auxiliary winding N31(16), the 2nd auxiliary winding N32And the 3rd auxiliary winding N (12)33(17) design principle is：1. when the supply line (9) voltage is that rated voltage, the Switching Power Supply (7) output voltage phase and size are identical with the supply line (9) rated voltage, the 1st auxiliary winding N31(16), the 2nd auxiliary winding N32And the 3rd auxiliary winding N (12)33(17) series connection output voltage (8) is rated output voltage；2. main iron core (4) and the 1st primary winding (2) undertake 80% nominal load power under source nominal voltage, and compensation iron core (6) and the 2nd primary winding (14) undertake 20% nominal load power；If 3. supply voltage peak is 115% rated value, now whole bearing powers are all provided by main iron core (4) and the 1st primary winding (2), and main iron core (4) and the 1st primary winding (2) press 100% nominal load power designs；If 4. supply voltage minimum value is 80% rated voltage, now main iron core (4) and the 1st primary winding (2) undertake 64% nominal load power, compensation iron core (6) and the 2nd primary winding (14) reach that 36% nominal load power can make output voltage (8) reach rated value, and compensation iron core (6) and the 2nd primary winding (14) press 36% nominal load power designs.
In figure 3,2 magnetic poles of 2 " mouth " font iron cores described in Fig. 1 are constituted into a thick magnetic pole (5) side by side, auxiliary winding N is set with outside in the thick magnetic pole (5)3(12) the 1st primary winding (), is only set with outside main magnetic pole without auxiliary winding, the 2nd primary winding () is only set with without auxiliary winding outside compensation magnetic pole, it is other identical with described in Fig. 1.
In Fig. 4,2 magnetic poles of 2 " mouth " font iron cores described in Fig. 1 are constituted into a thick magnetic pole (5) side by side, the 2nd auxiliary winding N is set with outside in the thick magnetic pole (5)32(12) it is, other identical with described in Fig. 1.
In Figure 5, on the basis of described Fig. 1, Fig. 3, increase switching power source control circuit (16), the contactor with normally closed main contacts or relay, voltage sampling circuit (20)；Voltage sampling circuit (20) the detection load voltage (8), the control circuit (16) changes Switching Power Supply (7) the output voltage size and phase according to the size of load voltage (8), change compensation magnetic flux (13) and (11), reach and control the auxiliary winding (22), (12), the purpose of (23) series connection output voltage (8)；The switching power source control circuit (16) also controls the pull-in winding (15) of the contactor or relay to be powered or power off, the pull-in winding (15) of the contactor or relay is first set to be powered when the switching power source control circuit (16) normal work, the normally closed main contacts of contactor or relay (18) is disconnected, and compensation electric current is provided by Switching Power Supply (7) in the 2nd primary winding (14)；When the switching power source control circuit (16) works abnormal or dead electricity; contactor or pulling relay coil (15) power-off; the normally closed main contacts of contactor or relay (18) closure; compensation electric current is provided by power supply in 2nd primary winding (14); as described in Fig. 1 explanations; if now supply line's voltage is rated voltage, the auxiliary winding (22), (12), (23) series connection output voltage are rated output voltage.
In figure 6, voltage stabilizing is realized with single-phase main transformer and single-phase compensator transformer.By the two ends of single-phase main transformer primary winding (2) and single phase power supply connection, the two ends of single-phase compensator transformer primary winding (7) are connected with two output stages of Switching Power Supply (10), the main transformer auxiliary winding (4) and compensator transformer auxiliary winding (5) are in sequential series, are output voltage (8) between the main transformer auxiliary winding (4) and the not connected two ends of compensator transformer auxiliary winding (5)；The design principle of the main transformer and compensator transformer is：1. when supply line's voltage is rated voltage, the Switching Power Supply (7) output voltage phase and size identical with supply line's rated voltage, the main transformer auxiliary winding (4) connects output voltage with compensator transformer auxiliary winding (5) for rated output voltage；2. main transformer undertakes 80% nominal load power under source nominal voltage, and compensator transformer undertakes 20% nominal load power；If 3. supply voltage peak is 115% rated value, now whole bearing powers are all by main transformer, and main transformer presses 100% nominal load power designs；If 4. supply voltage minimum value is 80% rated voltage, now main transformer undertakes 64% nominal load power, compensator transformer reaches that 36% nominal load power can make output voltage (8) reach rated value, and compensator transformer presses 36% nominal load power designs.
In the figure 7,1 is advocated peace 1 and compensates 3 pairs of magnetic poles of three-phase " day " font iron core and be superimposed, the iron core magnetic pole after overlapping has 3 intervals, and each interval can load 3 phase windings；Each 3 magnetic poles in iron core two ends are respectively the magnetic pole of described 2 " day " font iron cores after overlapping, and they are not in one plane；Middle 3 thick magnetic poles for the folded of 2 " day " font iron cores magnetic pole with；Described 3 be superimposed thick magnetic pole (10), (12), be set with the upper auxiliary winding N of 3 phase the 2nd outside (14)A32(9)、NB32(11)、NC32(13)；Do not overlapped at 3 of main iron core magnetic pole (2), (4), be set with upper the first primary winding of 3 phase N on (6)A1(1)、NB1(3)、NC1And the auxiliary winding N of 3 phase the 1st (5)A31(25)、NB31(26)、NC31(27)；Compensation 3 of iron core do not overlap magnetic pole (17), (19), load onto 3 the second primary winding of phase N respectively on (21)A2(16)、NB2(18)、NC2And the auxiliary winding N of 3 phase the 3rd (20)A33(28)、NB33(29)、NC33(30)；The first primary winding of 3 phase NA1(1)、NB1(3)、NC1(5) one group of Same Name of Ends connects into asterism (7), the NA1(1)、NB1(3)、NC1(5) three connections of another group of Same Name of Ends respectively with three-phase power line (23)；The second primary winding of 3 phase NA2(16)、NB2(18)、NC2(20) one group of Same Name of Ends connects into asterism (22), the NA2(16)、NB2(18)、NC2(20) another group of Same Name of Ends is connected with three output electrodes of threephase switch power supply (24) respectively, and the three-phase input end of the Switching Power Supply (24) is connected with three-phase power line (23) respectively；The auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32(13) each winding two ends respectively with the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 3rdA33(28)、NB33(29)、NC33(30) the same phase winding in is (i.e. opposite polarity is connected) in sequential series, the auxiliary winding N of 3 phase the 3rdA33(28)、NB33(29)、NC33(30) three not connected Same Name of Ends composition asterism, from the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27) three not connected Same Name of Ends output；Changed with the Switching Power Supply (24) and flow into the second primary winding of 3 phase NA2(16)、NB2(18)、NC2(20) electric current, so that it may change the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32(13) total magnetic flux and the auxiliary winding N of 3 phase the 3rd inA33(28)、NB33(29)、NC33(30) magnetic flux in, so that it may change the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32And the auxiliary winding N of 3 phase the 3rd (13)A33(28)、NB33(29)、NC33(30) with the output voltage (8) that is in series, regulated output voltage (8) purpose is reached；2 three-phases " day " font iron core magnetic column section product, 3 the first primary winding of phase NA1(1)、NB1(3)、NC1(5), 3 the second primary winding of phase NA2(16)、NB2(18)、NC2(20), the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32And the auxiliary winding N of 3 phase the 3rd (13)A33(28)、NB33(29)、NC33(30) design principle is：1. when the three-phase power line (23) voltage is that rated voltage, the threephase switch power supply (7) output voltage phase and size are identical with the three-phase power line (23) rated voltage, the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32And the auxiliary winding N of 3 phase the 3rd (13)A33(28)、NB33(29)、NC33(30) it is rated output voltage with phase winding series connection output voltage (8)；2. three-phase main iron core and three-phase the 1st primary winding undertakes 80% nominal load power under three phase mains rated voltage, and the three-phase compensation iron core and the primary winding of three-phase the 2nd undertake 20% nominal load power；If 3. three-phase mains voltage peak is 115% rated value, now whole threephase load power are all provided by the three-phase main iron core and the primary winding of three-phase the 1st, and the three-phase main iron core and the 1st primary winding press 100% nominal load power designs；If 4. three-phase mains voltage minimum value is 80% rated voltage, now three-phase main iron core and three-phase the 1st primary winding undertakes 64% nominal load power, the three-phase compensation iron core and the primary winding of three-phase the 2nd reach that 36% nominal load power can make three-phase output voltage (8) reach rated value, and the three-phase compensation iron core and the primary winding of three-phase the 2nd press 36% nominal load power designs.
In fig .9, on the basis of described Fig. 7, increase threephase switch power control circuit (34), the three-phase contactor with normally closed main contacts or relay, load voltage sample circuit (32)；The threephase switch power control circuit (34) is according to detected value of the voltage sampling circuit (32) to load voltage (8), control threephase switch power supply (24) the output voltage size and phase, reach that the three-phase for controlling the primary winding of three-phase the 2nd compensates magnetic flux, stablize the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32And the auxiliary winding N of 3 phase the 3rd (13)A33(28)、NB33(29)、NC33(30) with phase winding series connection three-phase output voltage (8) purpose；The switching power source control circuit (34) also controls the pull-in winding (36) of the contactor or relay to be powered or power off by wire (37), when the switching power source control circuit (34) normal work, the contactor or pulling relay coil (36) is first set to be powered, the normally closed main contacts of contactor or relay three-phase (39) is disconnected, and the primary winding (17) of three-phase the 2nd, (19), (21) are powered by the threephase switch power supply (24)；When the switching power source control circuit (34) works abnormal or dead electricity; contactor or pulling relay coil (36) power-off; the normally closed main contacts of contactor or relay three-phase (39) closure; the design principle is illustrated according to Fig. 7; if now three-phase power line (23) three-phase voltage is rated voltage, the auxiliary winding N of 3 phase the 1stA31(25)、NB31(26)、NC31(27), the auxiliary winding N of 3 phase the 2ndA32(9)、NB32(11)、NC32And the auxiliary winding N of 3 phase the 3rd (13)A33(28)、NB33(29)、NC33(30) it is rated voltage with phase winding series connection three-phase output voltage (8).
In Fig. 10, voltage stabilizing is realized with three-phase main transformer and three-phase compensator transformer.One group of Same Name of Ends of three-phase main transformer three-phase primary winding (1), (3), (5) is connected with three-phase power line respectively, the three-phase main transformer three-phase primary winding (1), (3), another group of Same Name of Ends composition asterism of (5)；The three-phase output stage of three-phase compensator transformer three-phase primary winding (12), (14), one group of Same Name of Ends of (16) respectively with threephase switch power supply (24) is connected, the three-phase compensator transformer three-phase primary winding (12), (14), another group of Same Name of Ends composition asterism of (16)；The three-phase main transformer three-phase auxiliary winding (9), (10), (11) respectively with three-phase compensator transformer three-phase auxiliary winding (18), (19), (20) it is in sequential series, the three-phase compensator transformer three-phase auxiliary winding (18), (19), (20) one group of not connected Same Name of Ends composition asterism, the three-phase main transformer three-phase auxiliary winding (9), (10), (11) not with three-phase compensator transformer three-phase auxiliary winding (18), (19), (20) between one group of Same Name of Ends of connection it is output voltage (8)；The design principle of the three-phase main transformer and three-phase compensator transformer is：1. when the three-phase power line voltage is rated voltage, the threephase switch power supply (24) output voltage phase and size identical with the three-phase power line rated voltage, the three-phase main transformer connects three-phase output voltage (8) with three-phase compensator transformer auxiliary winding for rated output voltage；2. three-phase main transformer undertakes 80% nominal load power under three phase mains rated voltage, and three-phase compensator transformer undertakes 20% nominal load power；If 3. three-phase mains voltage peak is 115% rated value, now whole bearing powers are all undertaken by three-phase main transformer, and three-phase main transformer presses 100% nominal load power designs；If 4. three-phase mains voltage minimum value is 80% rated voltage, now three-phase main transformer undertakes 64% nominal load power, three-phase compensator transformer reaches that 36% nominal load power can make three-phase output voltage (8) reach rated value, and three-phase compensator transformer presses 36% nominal load power designs.
Claims (3)
1. a kind of transformer capable of controlling part of voltage, it is characterized in that：For single-phase transformer, a pair of magnetic poles of two " mouth " font iron cores are overlapped, two " mouth " font iron core compositions are not in " day " font of a plane, and the medial lateral line of " day " font is overlapping magnetic pole；Or by a pair of magnetic poles of two " mouth " font iron cores side by side, two " mouth " font iron core compositions are in " day " font of a plane, and the medial lateral line of " day " font is magnetic pole side by side；By the 2nd auxiliary winding N32It is sleeved on the overlapping or is sleeved on side by side outside magnetic pole, that is, outside " day " font medial lateral line magnetic pole；By two primary winding N1、N2It is set in the auxiliary winding N32Outside two magnetic poles beyond the magnetic pole of place, that is, it is sleeved on outside the upper and lower two magnetic pole horizontal lines of described " day " word；By the 1st, the 3rd auxiliary winding N31、N33Also it is set in the described 1st, the 2nd primary winding N1、N2Outside the magnetic pole of place, the 1st, the 2nd, the 3rd auxiliary winding N31、N32、N33(positive and negative polarity connects) in sequential series；1st primary winding N1Two ends respectively with fixed single phase power supply connection, primary winding N1Magnetic flux Ф is produced in the iron circuit where itself1；2nd primary winding N2Two ends be connected respectively with two output stages of variable power supply, primary winding N2Magnetic flux Ф is produced in the iron circuit where itself2；The 2nd auxiliary winding N32In magnetic flux Ф3=Ф1+Ф2, the 2nd auxiliary winding N32Interior induced electromotive force e32=N3dФ3/ dt=N3d(Ф1+Ф2)/dt, the 1st auxiliary winding N31Interior induced electromotive force e31=N31dФ1/ dt, the 3rd auxiliary winding N33Interior induced electromotive force e33=N32dФ2/ dt, the 1st, the 2nd, the 3rd auxiliary winding N31、N32、N33Series inductance electromotive force e3=e31+e32+e33；Change the variable power supply output voltage size and phase, so that it may reach control Ф2, control Ф, control the 2nd auxiliary winding N32With the 3rd auxiliary winding N33Induced electromotive force e32And e33, stablize the auxiliary winding N31、N32、N33Series connection output voltage purpose；For three-phase transformer, three pairs of magnetic poles of two " day " font tri-phase iron cores are overlapped, two " day " font iron cores composition not plane "
" type, "
" centre " day " of type is two " day " font iron core lamination portions；By the auxiliary winding N of Three-Phase Transformer the 2ndA32、NB32、NC32It is set in the middle of described outside three magnetic poles of " day " font of overlapping, that is, is set in the middle of described outside three horizontal lines of " day " font iron core of overlapping；By the primary winding N of three-phase the 1stA1、NB1、NC1Described in being set in "
" type the left side " day " font iron core three medial lateral line magnetic poles outside；By the primary winding N of three-phase the 2ndA2、NB2、NC2Described in being set in "
" type the right " day " font iron core three medial lateral line magnetic poles outside；By the auxiliary winding N of three-phase the 1stA31、NB31、NC31It is set in the primary winding N of three-phase the 1stA1、NB1、NC1Outside the magnetic pole of place, by the auxiliary winding N of three-phase the 3rdA33、NB33、NC33It is set in the primary winding N of three-phase the 2ndA2、NB2、NC2Outside the magnetic pole of place, the three-phase the 1st, the 2nd, the 3rd auxiliary winding NA31、NB31、NC31, NA32、NB32、NC32And NA33、NB33、NC33In three windings of same phase it is (positive and negative polarity connects) in sequential series；The primary winding N of three-phase the 1st outside three medial lateral lines of the left side " day " the font iron coreA1、NB1、NC1It is connected respectively with three phase supply power line, magnetic flux Ф is produced in the primary winding iron core magnetic pole where itself of three-phase the 1stA1、ФB1、ФC1；The primary winding N of three-phase the 2nd outside three medial lateral lines of the right " day " font iron coreA2、NB2、NC2It is connected respectively with three output electrodes of three-phase variable power supply, magnetic flux Ф is produced in the primary winding iron core magnetic pole where itself of three-phase the 2ndA2、ФB2、ФC2, the magnetic flux Ф in the auxiliary winding of three-phase the 2nd32=Ф1+Ф2, induced electromotive force e in the auxiliary winding of a phase the 2nd32=N32dФ32/ dt=N32d(Ф1+Ф2Induced electromotive force e in)/dt, the auxiliary winding of a phase the 1st31=N31dФ31/ dt=N31dФ1Induced electromotive force e in/dt, the auxiliary winding of a phase the 3rd33=N33dФ33/ dt=N33dФ2/ dt, the described 1st, the 2nd, the 3rd auxiliary winding NA31、NB31、NC31, NA32、NB32、NC32And NA33、NB33、NC33In three with phase winding total induced electromotive force in sequential series be e3=e31+e32+e33, change variable three phase mains output voltage size and phase, so that it may reach change Ф2, change Ф, change e32And e33, stablize described three with phase winding total output voltage purpose in sequential series；The 2nd primary winding is set to be directly connected to power supply when variable power supply damage or dead electricity；Or using two single-phase or three-phase transformers, described two single-phase or three-phase transformer same phase auxiliary winding is in sequential series, mutually total output voltage is two single-phase or three-phase transformers with phase auxiliary winding output voltage sum to described single-phase or three-phase transformer one；Described 1st single-phase or three-phase transformer primary winding is connected with single-phase or three phase supply power supply, described 2nd single-phase or three-phase transformer primary winding is connected with single-phase or three-phase variable power supply, controls the 2nd single-phase or three-phase transformer auxiliary winding output voltage being connected with described single-phase or three-phase variable power supply to realize voltage stabilizing；The primary winding of the 2nd transformer is directly connected to power supply described in when variable power supply damage or dead electricity.
2. a kind of transformer capable of controlling part of voltage according to claim 1, it is characterized in that：One end of contactor or relay normally-closed contact is connected in the end points for the 2nd primary winding or the 2nd transformer primary winding being connected with the variable power supply, the other end of contactor or the relay normally-closed contact is connected with current supply line, and the variable power supply controls the pull-in winding of the contactor or relay to be powered or power off.
3. a kind of transformer capable of controlling part of voltage according to claim 1, it is characterized in that：The variable power supply is Switching Power Supply or inverter；The Switching Power Supply or the energy input of inverter termination supply line, the voltage sampling circuit input of the Switching Power Supply or inverter is connected in parallel on the size and phase at load two ends, Switching Power Supply described in the output control of the voltage sampling circuit or inverter output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200183191U CN201444443U (en) | 2009-01-16 | 2009-01-16 | Transformer capable of controlling part of voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200183191U CN201444443U (en) | 2009-01-16 | 2009-01-16 | Transformer capable of controlling part of voltage |
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| Publication Number | Publication Date |
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| CN201444443U true CN201444443U (en) | 2010-04-28 |
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| CN2009200183191U Expired - Lifetime CN201444443U (en) | 2009-01-16 | 2009-01-16 | Transformer capable of controlling part of voltage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185553A (en) * | 2011-04-11 | 2011-09-14 | 山东大学 | Continuously controllable transformer |
| CN106653334A (en) * | 2015-10-30 | 2017-05-10 | 特变电工衡阳变压器有限公司 | Single-phase transformer |
| ES2684108A1 (en) * | 2017-03-30 | 2018-10-01 | Universitat Politécnica de Catalunya | Active Transformer Power Conditioner (Machine-translation by Google Translate, not legally binding) |
| WO2019100996A1 (en) * | 2017-11-25 | 2019-05-31 | 华为技术有限公司 | Current transformer |
-
2009
- 2009-01-16 CN CN2009200183191U patent/CN201444443U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185553A (en) * | 2011-04-11 | 2011-09-14 | 山东大学 | Continuously controllable transformer |
| CN102185553B (en) * | 2011-04-11 | 2012-11-21 | 山东大学 | Continuously controllable transformer |
| CN106653334A (en) * | 2015-10-30 | 2017-05-10 | 特变电工衡阳变压器有限公司 | Single-phase transformer |
| ES2684108A1 (en) * | 2017-03-30 | 2018-10-01 | Universitat Politécnica de Catalunya | Active Transformer Power Conditioner (Machine-translation by Google Translate, not legally binding) |
| WO2019100996A1 (en) * | 2017-11-25 | 2019-05-31 | 华为技术有限公司 | Current transformer |
| US20200286681A1 (en) * | 2017-11-25 | 2020-09-10 | Huawei Technologies Co., Ltd. | Current transformer |
| CN111771250A (en) * | 2017-11-25 | 2020-10-13 | 华为技术有限公司 | Current transformer |
| CN111771250B (en) * | 2017-11-25 | 2022-08-26 | 华为技术有限公司 | Current transformer |
| US11742139B2 (en) | 2017-11-25 | 2023-08-29 | Huawei Technologies Co., Ltd. | Current transformer |
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Assignee: Beijing Guotie Luyang Technology Co., Ltd. Assignor: Wei Ming Contract record no.: 2011990000660 Denomination of utility model: Transformer capable of controlling part of voltage Granted publication date: 20100428 License type: Exclusive License Record date: 20110718 |
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Granted publication date: 20100428 |