Annular iron core saturable reactor and winding method thereof
By using the forward and reverse winding method of additional winding in the annular core saturation reactor, the problem of complex and high cost of increasing the winding DC resistance in the prior art is solved, and the effects of material saving, production efficiency improvement and reactance stability are achieved.
Patent Information
- Application Number
- CN202510301955.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2025-06-13
AI Technical Summary
When existing annular core saturation reactors increase the DC resistance of the winding, they need to increase the cost of insulating materials and wires, and the adjustment is complicated, which may lead to changes in reactance values and problems of unwinding.
The forward and reverse winding method of additional winding is adopted, and the front and reverse winding of the winding circumference is arranged outside the winding circumference. The forward and reverse winding of multiple even-number wires is avoided to avoid the influence of the inductance on the reactance value and improve the heat dissipation effect.
The processing convenience of the ring-shaped iron core saturation reactor, material saving, production efficiency improvement and cost reduction are achieved, and the impact of additional windings on the reactance value is avoided.
Smart Images
Figure CN120149045A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of reactors, and in particular to an annular core saturable reactor and a winding method thereof. Background Art
[0002] At present, existing saturable reactors are commonly used in equipment such as motor control, frequency converters, and uninterruptible power supplies (UPS) to achieve precise current control and protection functions. Among them, the annular core saturable reactor is widely used because of its convenient processing, simple structure, and low cost.
[0003] Existing annular core saturable transformers are all wound with wires evenly around the annular core ring. The core model and wires are selected for processing according to design requirements. When the number of turns is fixed, the DC resistance value of the winding is also fixed. If it is necessary to increase the DC resistance of the winding, the thickness of the insulating layer wrapped around the annular core is increased and then the wire is wound, so as to increase the wire length to reach the required DC resistance value. This method increases the cost of insulating materials and wires, and increases the leakage inductance, resulting in a change in the reactance value of the saturable reactor and further adjustment of the number of turns is required, which is complex and cumbersome. It may also cause the situation that the inner diameter of the annular core is too small to be wound, resulting in the need for re-design.
[0004] Therefore, we propose an annular core saturable reactor and a winding method thereof. Summary of the Invention
[0005] The applicant of the present invention aims at the above-mentioned shortcomings in the existing production technology, and provides an annular core saturable reactor and a winding method thereof, which are improved on the basis of the traditional winding method of the annular core saturable reactor, are convenient for processing, save materials, improve production efficiency, and reduce costs; the forward and reverse winding of the additional winding avoids the influence of the inductance generated by the additional winding on the reactance value of the reactor.
[0006] The technical solution adopted by the present invention is as follows: An annular core saturable reactor, comprising: An annular core, which is wound with a first insulating layer; A winding, which includes a wire. The wire of the winding is wound on the outside of the first insulating layer; the wire of the winding includes a first lead-out wire and a second lead-out wire, and a second insulating layer is arranged outside the wire of the winding; Two insulating baffles, which are arranged outside the second insulating layer; An additional winding, which is arranged between the two insulating baffles and is outside the second insulating layer. The wire of the additional winding includes a third lead-out wire and a fourth lead-out wire, and a third insulating layer is arranged outside the wire of the additional winding; Wherein, the wire of the additional winding is wound forward and backward, and the second lead-out wire of the winding is connected to the third lead-out wire of the additional winding.
[0007] It is further characterized in that: The additional winding has multiple layers of even-numbered wires. The even-numbered layers of the wires of the additional winding are wound forward, and the odd-numbered layers of the wires of the additional winding are wound backward.
[0008] For the outermost two layers of the wires of the additional winding, the remaining turns are evenly distributed for forward and backward winding, and the difference between the number of forward and backward turns is 0 - 1 turn.
[0009] For the outermost layer of the wires of the additional winding, the remaining turns are evenly distributed for forward and backward winding, and the difference between the number of forward and backward turns is 0 - 1 turn.
[0010] The present invention also provides a winding method for an annular core saturable reactor, which includes the following steps: Wind a first insulating layer on the annular core; Wind the wires of the winding outside the first insulating layer; the wires of the winding include a first lead wire and a second lead wire; Wind a second insulating layer outside the wires of the winding; Two insulating baffles are arranged outside the second insulating layer; Wind the wires of the additional winding between the two insulating baffles. The wires of the additional winding are wound forward and backward, and the wires of the additional winding include a third lead wire and a fourth lead wire; Connect the second lead wire of the winding to the third lead wire of the additional winding.
[0011] The wires of the additional winding have multiple layers of even-numbered wires. The even-numbered layers are wound forward, the odd-numbered layers are wound backward, and for the outermost two layers, the remaining turns are evenly distributed for forward and backward winding, and the difference between the number of forward and backward turns is 0 - 1 turn.
[0012] The wires of the additional winding have multiple layers of even-numbered wires. The even-numbered layers are wound forward, the odd-numbered layers are wound backward, and for the outermost layer, the remaining turns are evenly distributed for forward and backward winding, and the difference between the number of forward and backward turns is 0 - 1 turn.
[0013] The beneficial effects of the present invention are as follows: The structure of the present invention is compact, reasonable, and easy to operate. It is improved on the basis of the traditional winding method of the annular core saturable reactor, which is convenient for processing, saves materials, improves production efficiency, and reduces costs; the forward and backward winding of the additional winding avoids the influence of the inductance generated by the additional winding on the reactance value of the reactor.
[0014] Meanwhile, the present invention also has the following advantages: (1) Arranging the additional winding outside the circumference of the winding is beneficial to heat dissipation. Brief Description of the Drawings
[0015] Figure 1 is a schematic structure of the present invention Figure 1 .
[0016] Figure 2 is a schematic structure of the present invention Figure 2。
[0017] Among them: 1. Ring-shaped iron core; 101. First insulating layer; 2. Winding; 201. First lead wire; 202. Second lead wire; 203. Second insulating layer; 3. Additional winding; 301. Third lead wire; 302. Fourth lead wire; 303. Third insulating layer; 4. Insulating baffle. Specific embodiments
[0018] The following combines with the attached drawings to illustrate the specific embodiments of the present invention.
[0019] As Figure 1 - Figure 2 shown, a ring-shaped iron core saturable reactor includes a ring-shaped iron core 1, a winding 2, an additional winding 3 and an insulating baffle 4.
[0020] A first insulating layer 101 is provided outside the ring-shaped iron core 1. The winding 2 is arranged outside the first insulating layer 101. The winding 2 includes a wire and a second insulating layer 203. The second insulating layer 203 is arranged outside the wire of the winding 2. The wire of the winding 2 is provided with a first lead wire 201 and a second lead wire 202.
[0021] Two insulating baffles 4 are arranged outside the winding 2. An additional winding 3 is arranged between the two insulating baffles 4. The additional winding 3 includes a wire and a third insulating layer 303. The wire of the additional winding 3 includes a third lead wire 301 and a fourth lead wire 302. The wire of the additional winding 3 is wound in forward and reverse directions; In one embodiment, the additional winding 3 has multiple layers of even-numbered wires. The even-numbered layers are wound in the forward direction, the odd-numbered layers are wound in the reverse direction, and the remaining turns of the outermost two layers are evenly distributed for forward and reverse winding, with the difference between the forward and reverse turns being 0 - 1 turn.
[0022] In one embodiment, the wire of the additional winding 3 has multiple layers of even-numbered wires. The even-numbered layers are wound in the forward direction, the odd-numbered layers are wound in the reverse direction, and the remaining turns of the outermost layer are evenly distributed for forward and reverse winding, with the difference between the forward and reverse turns being 0 - 1 turn.
[0023] The second lead wire 202 of the winding 2 is connected to the third lead wire 301 of the additional winding 3.
[0024] Improve on the traditional winding method of the ring-shaped iron core saturable reactor, which is convenient for processing, saves materials, improves production efficiency, and reduces costs; The forward and reverse winding of the additional winding 3 avoids the influence of the inductance generated by the additional winding 3 on the reactance value of the reactor.
[0025] The arrangement of the additional winding 3 on the outer circumference of the winding 2 is beneficial to heat dissipation.
[0026] A winding method for a ring-shaped iron core saturable reactor includes the following steps: Wind the first insulating layer 101 on the ring-shaped iron core 1; Wind the wire of winding 2 around the outside of the first insulating layer 101; the wire of winding 2 includes a first lead wire 201 and a second lead wire 202; Wind a second insulating layer 203 around the wire of winding 2; Two insulating baffles 4 are arranged on the outside of the second insulating layer 203; Wind the wire of the additional winding 3 between the two insulating baffles 4. The wire of the additional winding 3 is wound in forward and reverse directions. The wire of the additional winding 3 includes a third lead wire 301 and a fourth lead wire 302; Connect the second lead wire 202 of winding 2 to the third lead wire 301 of the additional winding 3.
[0027] The wire of the additional winding 3 has multiple layers of even-numbered wires. The even-numbered layers are wound in the forward direction, and the odd-numbered layers are wound in the reverse direction. The remaining turns of the outermost two layers are evenly distributed between forward and reverse winding, and the difference between the forward and reverse turns is 0 - 1 turn.
[0028] The wire of the additional winding 3 has multiple layers of even-numbered wires. The even-numbered layers are wound in the forward direction, and the odd-numbered layers are wound in the reverse direction. The remaining turns of the outermost layer are evenly distributed between forward and reverse winding, and the difference between the forward and reverse turns is 0 - 1 turn.
[0029] The above description is an explanation of the present invention, not a limitation of the invention. For the scope defined by the present invention, refer to the claims. Any form of modification can be made within the protection scope of the present invention.
Claims
1. A toroidal iron core saturated reactor, characterized in that: include: An annular iron core (1) wound with a first insulating layer (101); A winding (2), comprising a conductive wire, wherein the conductive wire of the winding (2) is wound around the outside of a first insulating layer (101); the conductive wire of the winding (2) comprises a first lead wire (201) and a second lead wire (202), and a second insulating layer (203) is provided outside the conductive wire of the winding (2); Two insulating baffles (4) arranged outside the second insulating layer (203); The additional winding (3) is arranged between the two insulating baffles (4) and is located outside the second insulating layer (203); the conductor of the additional winding (3) comprises a third lead wire (301) and a fourth lead wire (302); and a third insulating layer (303) is arranged outside the conductor of the additional winding (3); The conducting wire of the additional winding (3) is wound in forward and reverse directions, and the second lead wire (202) of the winding (2) is connected to the third lead wire (301) of the additional winding (3).
2. A toroidal iron core saturated reactor as claimed in claim 1, characterized in that: The additional winding (3) has multiple layers of even-numbered wires, the even-numbered layers of the wires of the additional winding (3) are wound in a forward direction, and the odd-numbered layers of the wires of the additional winding (3) are wound in a reverse direction.
3. A toroidal iron core saturated reactor as claimed in claim 2, characterized in that: The remaining turns of the two outermost layers of the conductor of the additional winding (3) are evenly distributed in forward and reverse windings, and the difference between the forward and reverse turns is 0-1 turn.
4. A toroidal iron core saturated reactor as claimed in claim 2, characterized in that: The remaining number of turns of the outermost layer of the conductor of the additional winding (3) is evenly distributed in forward and reverse windings, and the difference between the number of forward and reverse turns is 0-1 turn.
5. A method for winding a toroidal iron core saturated reactor, characterized in that: The steps include: Winding a first insulating layer (101) on the annular core (1); A conductor of a winding (2) is wound outside the first insulating layer (101); the conductor of the winding (2) comprises a first lead wire (201) and a second lead wire (202); A second insulating layer (203) is wound around the conductor of the winding (2); Two insulating baffles (4) are arranged outside the second insulating layer (203); Winding a conductor of the additional winding (3) between two insulating baffles (4), the conductor of the additional winding (3) being wound in forward and reverse directions, the conductor of the additional winding (3) comprising a third lead wire (301) and a fourth lead wire (302); The second lead wire (202) of the winding (2) is connected to the third lead wire (301) of the additional winding (3).
6. The method for winding a toroidal iron core saturated reactor according to claim 5, characterized in that: The conductor of the additional winding (3) has multiple layers of even-numbered conductors, the even-numbered layers are wound in the forward direction, the odd-numbered layers are wound in the reverse direction, and the remaining turns of the two outermost layers are evenly distributed in the forward and reverse windings, and the difference between the forward and reverse turns is 0-1 turn.
7. The method for winding a toroidal iron core saturated reactor according to claim 5, characterized in that: The conductor of the additional winding (3) has multiple layers of even-numbered conductors, the even-numbered layers are wound in the forward direction, the odd-numbered layers are wound in the reverse direction, and the remaining number of turns in the outermost layer is evenly distributed between the forward and reverse windings, with the difference between the number of turns in the forward and reverse directions being 0-1 turn.