An integrated reactor transformer

Abstract

This utility model discloses an integrated reactor transformer, including a transformer, an input reactor, and a phase-shifting reactor. A bottom channel steel is installed at the bottom of the transformer, and mounting holes are provided on the bottom channel steel for chassis fixing. The input reactor and the phase-shifting reactor are installed side-by-side on the top of the transformer, connected by a connecting plate. This utility model employs an integrated reactor transformer, with the reactor and transformer forming a single unit. This results in a small overall size, increasing the power density of the power supply. It can be fixed vertically within a frequency converter, allowing for both vertical and horizontal installations. This effectively solves the problems of difficult layout and complex installation of the input reactor, phase-shifting reactor, and transformer within a frequency converter. The integrated installation inside the frequency converter allows for unobstructed airflow and facilitates heat dissipation.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter power supply technology, and specifically relates to an integrated reactor transformer. Background Technology

[0002] Reactors and transformers are important components in frequency converters. Reactors specifically include input reactors, phase-shifting reactors, and output reactors. Input reactors primarily function as input filters, voltage regulators, and power factor improvers; phase-shifting reactors mainly change the current phase and reduce input current harmonics; output reactors primarily function as output filters and voltage regulators; and output transformers primarily serve as output isolation and voltage transformation devices. Each type of reactor and transformer mainly consists of a magnetic core, windings, and fixed supports. Based on the capacity and input / output voltage specifications of the frequency converter, various reactors and transformers of different shapes are designed. The volume and weight of each type of reactor and transformer are different. Moreover, the different stress points of the components in vertical and horizontal installations of the frequency converter must be considered. This leads to difficulties in the internal component layout of the frequency converter, complex component installation, large overall power supply volume, and poor heat dissipation. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an integrated reactor transformer. The reactor and transformer are integrated into one unit, resulting in a small overall size and improved power density. It is fixedly installed vertically in the frequency converter, and can be used in both vertical and horizontal configurations. This effectively solves the problems of difficult layout and complex installation of input reactors, phase-shifting reactors, and transformers in frequency converters. The entire unit is installed inside the frequency converter, with a vertically and horizontally connected airflow channel, which facilitates heat dissipation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An integrated reactor transformer includes a transformer, an input reactor, and a phase-shifting reactor. A bottom channel steel is installed at the bottom of the transformer, which serves to stabilize the structure. The bottom channel steel has mounting holes for fixing the chassis. The input reactor and the phase-shifting reactor are installed side by side on the top of the transformer and are connected by a connecting plate.

[0005] The transformer includes a transformer core, a primary coil, and a secondary coil. The primary coil is wound on the transformer core, and the secondary coil is wound on top of the primary coil. A transformer air duct is formed between the primary and secondary coils. A first air duct is formed between the transformer core and the primary coil, and the first air duct and the transformer air duct are vertically connected. The primary coil is equipped with output terminals for a first primary coil and a second primary coil. The secondary coil is equipped with output terminals for a first secondary coil and a second secondary coil. The bottom of the transformer core is clamped and fixed by a transformer bottom angle steel and transformer bottom mounting bolts. The top of the transformer core is clamped and fixed by a transformer top angle steel and transformer top mounting bolts. The transformer and the bottom channel steel are connected through transformer bottom mounting holes. The transformer top angle steel has input reactor mounting holes and phase-shifting reactor mounting holes. The input reactor is fixed through the input reactor mounting holes, and the phase-shifting reactor mounting holes are equipped with phase-shifting reactor mounting studs. The phase-shifting reactor is fixed through the phase-shifting reactor mounting holes and the phase-shifting reactor mounting studs.

[0006] Preferably, the transformer core is a three-phase four-column core, with the fourth column located between the A-phase column and the B-phase column. The fourth column is stacked together with the A-phase column, the B-phase column, and the C-phase column, and the magnetic material is 0.2mm cold-rolled silicon steel.

[0007] Preferably, the primary coil and the secondary coil are made of copper foil or aluminum foil. The primary coil has a size of 0.6mm × 80mm, and the secondary coil has a size of 0.6mm × 160mm. The primary coil and the secondary coil are wound on phase A magnetic posts, phase B magnetic posts, and phase C magnetic posts.

[0008] Preferably, the width of the transformer air duct is 20mm, and the width of the first air duct is 10mm.

[0009] Preferably, the output terminals of the first primary coil, the second primary coil, the first primary coil, and the second primary coil are made of copper busbars, aluminum busbars, or copper-aluminum composite busbars.

[0010] The input reactor includes an input reactor core and an input reactor coil. The input reactor coil is wound around the input reactor core, and an input reactor air duct is formed between the input reactor core and the input reactor coil, which runs vertically through the core. The input reactor coil is equipped with input reactor inlet terminals and input reactor outlet terminals. The top of the input reactor core is clamped and fixed by a top angle steel and longitudinal fixing bolts, and the bottom of the input reactor core is clamped and fixed by a bottom angle steel and transverse fixing bolts. A top mounting hole is provided on the top angle steel for connecting a phase-shifting reactor, and a bottom mounting hole is provided on the bottom angle steel for connecting and fixing a transformer.

[0011] Preferably, the input reactor core is a three-phase three-column core, and the magnetic material is 0.35mm cold-rolled silicon steel.

[0012] Preferably, the input reactor coil is made of 4*10mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and the input reactor coil is wound on phase A, phase B, and phase C magnetic posts.

[0013] Preferably, the input terminals and output terminals of the input reactor are made of copper busbars, aluminum busbars, or copper-aluminum composite busbars.

[0014] The phase-shifting reactor includes a phase-shifting reactor core and a phase-shifting reactor coil. The phase-shifting reactor coil is wound around the outside of the phase-shifting reactor core. A phase-shifting reactor air duct is formed between the phase-shifting reactor core and the phase-shifting reactor coil, which runs vertically through the reactor. The phase-shifting reactor coil is equipped with phase-shifting reactor inlet terminals and phase-shifting reactor outlet terminals. The phase-shifting reactor core is clamped and fixed by a top angle steel, a bottom angle steel, and a fixing bolt. The bottom angle steel has a bottom mounting hole for connecting and fixing a transformer. The top angle steel has a top mounting hole for connecting an input reactor.

[0015] Preferably, the phase-shifting reactor core is a three-phase five-column core, with the fourth and fifth columns, along with the A-phase, B-phase, and C-phase columns, stacked together, and the magnetic material is cold-rolled silicon steel.

[0016] Preferably, the phase-shifting reactor coil is made of 5*6mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and the phase-shifting reactor coil is wound on phase A, phase B, and phase C magnetic columns.

[0017] Preferably, the phase-shifting reactor's input terminals and output terminals are made of copper busbars, aluminum busbars, or copper-aluminum composite busbars.

[0018] Preferably, the thickness of the transformer core is the same as the thickness of the input reactor core and the phase-shifting reactor core.

[0019] Preferably, the height of the phase-shifting reactor core is the same as that of the input reactor core, both being 290mm. The sum of the widths of the phase-shifting reactor core and the input reactor core is less than the width of the transformer core. The phase-shifting reactor core width is 250mm, the input reactor core width is 130mm, and the transformer core width is 390mm.

[0020] The beneficial effects of this utility model are: 1) An integrated reactor transformer, in which the reactor and transformer are integrated into one unit, with a small overall size, improving the power density of the power supply. It is fixedly installed vertically in the frequency converter, and can be used in both vertical and horizontal configurations. It effectively solves the problems of difficult layout and complex installation of input reactors, phase-shifting reactors and transformers in frequency converters. The whole unit is installed inside the frequency converter, with a vertically connected air duct, which facilitates heat dissipation.

[0021] 2) The input reactor and the phase-shifting reactor are connected as a whole by the connecting plate. The leakage inductance of the transformer can be used as an output reactor to play the role of output filtering. There is no need to design a separate output reactor, which saves space and facilitates layout. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of an integrated reactor transformer according to the present invention.

[0023] Appendix Figure 2 This is a bottom view of the transformer in an integrated reactor transformer according to this utility model.

[0024] Appendix Figure 3 This is a front view of the transformer in an integrated reactor transformer according to this utility model.

[0025] Appendix Figure 4 This is a top view of the transformer in an integrated reactor transformer according to this utility model.

[0026] Appendix Figure 5 This is a side view of the transformer in an integrated reactor transformer according to this utility model.

[0027] Appendix Figure 6 This is a rear view of the transformer in an integrated reactor transformer according to this utility model.

[0028] Appendix Figure 7 This is a bottom view of the input reactor in an integrated reactor transformer according to this utility model.

[0029] Appendix Figure 8 This is a front view of the input reactor in an integrated reactor transformer according to this utility model.

[0030] Appendix Figure 9 This is a top view of the input reactor in an integrated reactor transformer according to this utility model.

[0031] Appendix Figure 10 This is a side view of the input reactor in an integrated reactor transformer according to this utility model.

[0032] Appendix Figure 11 This is a bottom view of the phase-shifting reactor in an integrated reactor transformer according to this utility model.

[0033] Appendix Figure 12 This is a front view of the phase-shifting reactor in an integrated reactor transformer according to this utility model.

[0034] Appendix Figure 13 This is a top view of the phase-shifting reactor in an integrated reactor transformer according to this utility model.

[0035] Appendix Figure 14 This is a side view of the phase-shifting reactor in an integrated reactor transformer according to this utility model.

[0036] Appendix Figure 15 This is a schematic diagram of the transformer core structure in an integrated reactor transformer according to this utility model.

[0037] Appendix Figure 16 This is a schematic diagram of the input reactor core structure in an integrated reactor transformer according to this utility model.

[0038] Appendix Figure 17 This is a schematic diagram of the magnetic core structure of the phase-shifting reactor in an integrated reactor transformer according to this utility model.

[0039] In the diagram: 1. Transformer; 2. Input reactor; 3. Phase-shifting reactor; 4. Bottom channel steel; 5. Connecting plate; 6. Phase A magnetic column; 7. Phase B magnetic column; 8. Phase C magnetic column; 9. Fourth magnetic column; 10. Fifth magnetic column; 11. Transformer core; 12. Primary coil; 13. Secondary coil; 14. Transformer duct; 15. Output terminal of the first primary coil; 16. Output terminal of the second secondary coil; 17. Output terminal of the first primary coil; 18. Output terminal of the second primary coil; 19. Bottom angle steel of the transformer; 110. Top angle steel of the transformer; 111. Bottom mounting bolt of the transformer; 112. Top mounting bolt of the transformer; 113. Input reactor mounting hole; 114. Phase-shifting reactor mounting hole; 115. Phase-shifting reactor mounting stud; 116. Bottom mounting hole of the transformer; 1. Input reactor core; 22. Input reactor coil; 23. Input reactor duct; 24. Input reactor inlet terminal; 25. Input reactor outlet terminal; 26. Input reactor top angle steel; 27. Input reactor bottom angle steel; 28. Input reactor transverse fixing bolt; 29. ​​Input reactor longitudinal fixing bolt; 210. Input reactor top mounting hole; 211. Input reactor bottom mounting hole; 31. Phase-shifting reactor core; 32. Phase-shifting reactor coil; 33. Phase-shifting reactor duct; 34. Phase-shifting reactor inlet terminal; 35. Phase-shifting reactor outlet terminal; 36. Phase-shifting reactor top angle steel; 37. Phase-shifting reactor bottom angle steel; 38. Phase-shifting reactor fixing bolt; 39. Phase-shifting reactor top mounting hole; 310. Phase-shifting reactor bottom mounting hole. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-17 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] An integrated reactor transformer includes a transformer 1, an input reactor 2, and a phase-shifting reactor 3. A bottom channel steel 4 is installed at the bottom of the transformer 1, providing structural stability. The bottom channel steel 4 has mounting holes for mounting the transformer to a chassis. The input reactor 2 and the phase-shifting reactor 3 are installed side-by-side on the top of the transformer 1 and connected by a connecting plate 5, forming a single unit. The leakage inductance of the transformer 1 can be used as an output reactor for output filtering, eliminating the need for a separate output reactor, saving space, and facilitating layout.

[0043] The transformer 1 includes a transformer core 11, a primary coil 12, and a secondary coil 13. The primary coil 12 is wound on the transformer core 11, and the secondary coil 13 is wound on the primary coil 12. A transformer air duct 14 is formed between the primary coil 12 and the secondary coil 13. A first air duct is formed between the transformer core 11 and the primary coil 12, and the first air duct and the transformer air duct 14 are vertically connected. The primary coil 12 is equipped with a first primary coil output terminal 17 and a second primary coil output terminal 18. The secondary coil 13 is equipped with a first secondary coil output terminal 15 and a second secondary coil output terminal 16. The transformer core 11... The bottom of the transformer is clamped and fixed by the bottom angle steel 19 and the bottom mounting bolts 111. The top of the transformer core 11 is clamped and fixed by the top angle steel 110 and the top mounting bolts 112. The transformer 1 and the bottom channel steel 4 are connected by the bottom mounting hole 116. The top angle steel 110 has an input reactor mounting hole 113 and a phase-shifting reactor mounting hole 114. The input reactor 2 is fixed through the input reactor mounting hole 113. The phase-shifting reactor mounting stud 115 is installed inside the phase-shifting reactor mounting hole 114. The phase-shifting reactor 3 is fixed through the phase-shifting reactor mounting hole 114 and the phase-shifting reactor mounting stud 115.

[0044] The transformer core 11 is a three-phase, four-limb core. The fourth limb 9 is located between phase A limb 6 and phase B limb 7. The fourth limb 9 is laminated together with phase A limb 6, phase B limb 7, and phase C limb 8. The magnetic material is 0.2mm cold-rolled silicon steel. The primary coil 12 and secondary coil 13 are made of copper foil or aluminum foil. The primary coil 12 measures 0.6mm × 80mm, and the secondary coil 13 measures 0.6mm × 160mm. The primary coil 12 and secondary coil 13 are wound on phase A limb 6, phase B limb 7, and phase C limb 8. The transformer duct 14 has a width of 20mm, and the first duct has a width of 10mm. The output terminals 15, 16, 17, and 18 of the first and second primary coils are made of copper busbars, aluminum busbars, or copper-aluminum composite busbars.

[0045] The input reactor 2 includes an input reactor core 21 and an input reactor coil 22. The input reactor coil 22 is wound around the input reactor core 21. An input reactor air duct 23 is formed between the input reactor core 21 and the input reactor coil 22, and the input reactor air duct 23 runs vertically through the core. The input reactor coil 22 is equipped with an input reactor inlet terminal 24 and an input reactor outlet terminal 25. The top of the input reactor core 21 is connected to an input reactor top angle steel 26. The reactor is clamped and fixed by longitudinal fixing bolts 29. The bottom of the input reactor core 21 is clamped and fixed by bottom angle steel 27 and transverse fixing bolts 28. Top angle steel 26 of the input reactor has a top mounting hole 210 for connecting the phase-shifting reactor 3. Bottom angle steel 27 of the input reactor has a bottom mounting hole 211 for connecting and fixing the transformer 1.

[0046] The input reactor core 21 is a three-phase, three-limb core, and the magnetic material is 0.35mm cold-rolled silicon steel. The input reactor coil 22 is made of 4*10mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and is wound on phase A magnetic limb 6, phase B magnetic limb 7, and phase C magnetic limb 8. The input reactor inlet terminal 24 and input reactor outlet terminal 25 are made of copper busbar, aluminum busbar, or copper-aluminum composite busbar material.

[0047] The phase-shifting reactor 3 includes a phase-shifting reactor core 31 and a phase-shifting reactor coil 32. The phase-shifting reactor coil 32 is wound around the outside of the phase-shifting reactor core 31. A phase-shifting reactor air duct 33 is formed between the phase-shifting reactor core 31 and the phase-shifting reactor coil 32, and the phase-shifting reactor air duct 33 runs vertically through the core. The phase-shifting reactor coil 32 is equipped with a phase-shifting reactor inlet terminal 34 and a phase-shifting reactor outlet terminal 35. 31 is clamped and fixed by the top angle steel 36, the bottom angle steel 37, and the fixing bolts 38 of the phase-shifting reactor. The bottom angle steel 37 of the phase-shifting reactor has a bottom mounting hole 310 for connecting and fixing the transformer 1. The top angle steel 36 of the phase-shifting reactor has a top mounting hole 39 for connecting the input reactor 2.

[0048] The phase-shifting reactor core 31 is a three-phase, five-limb core, with the fourth and fifth limbs 9 and A-phase 6, B-phase 7, and C-phase 8 stacked together. The magnetic material is cold-rolled silicon steel. The phase-shifting reactor coil 32 is made of 5*6mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and is wound on A-phase limb 6, B-phase limb 7, and C-phase limb 8. The phase-shifting reactor input terminals 34 and output terminals 35 are made of copper busbars, aluminum busbars, or copper-aluminum composite materials. The thickness of the transformer core 11 is the same as that of the input reactor core 21 and the phase-shifting reactor core 31.

[0049] The height of the phase-shifting reactor core 31 is the same as that of the input reactor core 21, both being 290mm. The sum of the widths of the phase-shifting reactor core 31 and the input reactor core 21 is less than the width of the transformer core 11. The width of the phase-shifting reactor core 31 is 250mm, the width of the input reactor core 21 is 130mm, and the width of the transformer core 11 is 390mm.

[0050] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An integrated reactor transformer, characterized in that, The transformer includes an input reactor and a phase-shifting reactor. A bottom channel steel is installed at the bottom of the transformer, and the bottom channel steel has mounting holes. The input reactor and the phase-shifting reactor are installed side by side on the top of the transformer and are connected by a connecting plate. The transformer includes a transformer core, a primary coil, and a secondary coil. The primary coil is wound on the transformer core, and the secondary coil is wound on top of the primary coil. A transformer air duct is formed between the primary and secondary coils. A first air duct is formed between the transformer core and the primary coil, and the first air duct and the transformer air duct are vertically connected. The primary coil is equipped with output terminals for a first primary coil and a second primary coil. The secondary coil is equipped with output terminals for a first secondary coil and a second secondary coil. The bottom of the transformer core is clamped and fixed by a transformer bottom angle steel and transformer bottom mounting bolts. The top of the transformer core is clamped and fixed by a transformer top angle steel and transformer top mounting bolts. The transformer and the bottom channel steel are connected through transformer bottom mounting holes. The transformer top angle steel has input reactor mounting holes and phase-shifting reactor mounting holes. The input reactor is fixed through the input reactor mounting holes. The phase-shifting reactor mounting holes are equipped with phase-shifting reactor mounting studs, and the phase-shifting reactor is fixed through the phase-shifting reactor mounting holes and the phase-shifting reactor mounting studs. The input reactor includes an input reactor core and an input reactor coil. The input reactor coil is wound around the input reactor core, and an input reactor air duct is formed between the input reactor core and the input reactor coil, which runs vertically through the input reactor. The input reactor coil is equipped with input reactor inlet terminals and input reactor outlet terminals. The top of the input reactor core is clamped and fixed by input reactor top angle steel and input reactor longitudinal fixing bolts. The bottom of the input reactor core is clamped and fixed by input reactor bottom angle steel and input reactor transverse fixing bolts. An input reactor top mounting hole is opened on the input reactor top angle steel for connecting a phase-shifting reactor. An input reactor bottom mounting hole is opened on the input reactor bottom angle steel for connecting and fixing a transformer. The phase-shifting reactor includes a phase-shifting reactor core and a phase-shifting reactor coil. The phase-shifting reactor coil is wound around the outside of the phase-shifting reactor core. A phase-shifting reactor air duct is formed between the phase-shifting reactor core and the phase-shifting reactor coil, which runs vertically through the reactor. The phase-shifting reactor coil is equipped with phase-shifting reactor inlet terminals and phase-shifting reactor outlet terminals. The phase-shifting reactor core is clamped and fixed by a top angle steel, a bottom angle steel, and a fixing bolt. The bottom angle steel has a bottom mounting hole for connecting and fixing a transformer. The top angle steel has a top mounting hole for connecting an input reactor.

2. The integrated reactor transformer according to claim 1, characterized in that, The transformer core is a three-phase, four-column core, with the fourth column located between the A-phase and B-phase columns. The fourth column is stacked together with the A-phase, B-phase, and C-phase columns, and the magnetic material is 0.2mm cold-rolled silicon steel.

3. The integrated reactor transformer according to claim 1, characterized in that, The primary and secondary coils are made of copper foil or aluminum foil. The primary coil has a size of 0.6mm × 80mm, and the secondary coil has a size of 0.6mm × 160mm. The primary and secondary coils are wound on phase A, phase B, and phase C magnetic posts.

4. The integrated reactor transformer according to claim 1, characterized in that, The width of the transformer air duct is 20mm, and the width of the first air duct is 10mm.

5. The integrated reactor transformer according to claim 1, characterized in that, The output terminals of the first primary coil, the second primary coil, the first primary coil, the second primary coil, the input reactor, the input reactor, the phase-shifting reactor, and the phase-shifting reactor are made of copper busbars, aluminum busbars, or copper-aluminum composite busbars.

6. The integrated reactor transformer according to claim 1, characterized in that, The input reactor core is a three-phase, three-column core, and the magnetic material is 0.35mm cold-rolled silicon steel.

7. The integrated reactor transformer according to claim 1, characterized in that, The input reactor coil is made of 4*10mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and the input reactor coil is wound on phase A, phase B, and phase C magnetic columns.

8. The integrated reactor transformer according to claim 1, characterized in that, The phase-shifting reactor core adopts a three-phase five-limb core, with the fourth and fifth limbs, along with the A-phase, B-phase, and C-phase limbs, stacked together, and the magnetic material is cold-rolled silicon steel.

9. An integrated reactor transformer according to claim 1, characterized in that, The phase-shifting reactor coil is made of 5*6mm flat copper wire, flat aluminum wire, or copper-clad aluminum wire, and the phase-shifting reactor coil is wound on phase A, phase B, and phase C magnetic columns.

10. An integrated reactor transformer according to claim 1, characterized in that, The thickness of the transformer core is the same as that of the input reactor core and the phase-shifting reactor core. The height of the phase-shifting reactor core is the same as that of the input reactor core, both being 290mm. The sum of the width of the phase-shifting reactor core and the width of the input reactor core is less than the width of the transformer core. The width of the phase-shifting reactor core is 250mm, the width of the input reactor core is 130mm, and the width of the transformer core is 390mm.

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