Hybrid transformer
By integrating voltage transformation, dynamic stepless voltage regulation, harmonic suppression, and reactive power compensation functions into a hybrid transformer, the problem of requiring additional equipment in traditional transformers is solved, and efficient and stable power supply is achieved.
Patent Information
- Application Number
- CN202423066679.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Traditional transformers in modern power systems require additional voltage regulators, filters, and reactive power compensation devices to meet power quality requirements, which increases system complexity and cost, while also resulting in energy waste and maintenance difficulties.
Design a hybrid transformer that integrates voltage transformation, dynamic stepless voltage regulation, harmonic suppression, and reactive power compensation functions. Through the combination of main three-phase magnetic core, auxiliary three-phase magnetic core, low-voltage coil group, compensation coil group, and high-voltage coil group, it achieves efficient and stable power supply.
It reduces additional equipment configuration, lowers system complexity and cost, achieves efficient and stable power supply, and meets power quality requirements.
Smart Images
Figure CN223692983U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of power equipment, concretely is a hybrid transformer. BACKGROUND
[0002] Traditional transformers are mainly used for voltage transformation, but in modern power systems, the requirements for power quality are increasingly high, including voltage stability, harmonic content, and power factor. In order to meet these requirements, additional voltage regulators, filters, and reactive power compensation devices are usually required, which not only increases the complexity and cost of the system, but also may lead to energy waste and operational difficulties. SUMMARY
[0003] The utility model aims at providing a hybrid transformer which integrates voltage transformation, dynamic stepless voltage regulation, harmonic suppression, and reactive power compensation, without the need for additional related equipment, and can realize efficient and stable power supply in cooperation with the transformer.
[0004] The above-mentioned optimization structure of the utility model is realized by the following technical scheme: a hybrid transformer, comprising a main three-phase magnetic core, a secondary three-phase magnetic core is arranged in parallel on the main three-phase magnetic core, a low-voltage coil group is arranged on the main three-phase magnetic core, the low-voltage coil group is connected with a load, a compensation coil group is arranged on the secondary three-phase magnetic core, the compensation coil group is connected with a transformer, a high-voltage coil group is arranged outside the low-voltage coil group and the compensation coil group, and the high-voltage coil group is connected with a power grid.
[0005] In some embodiments, the main three-phase magnetic core comprises a main upper yoke portion and a main lower yoke portion, the main upper yoke portion and the main lower yoke portion are arranged in parallel, and a first main core column, a second main core column, and a third main core column are sequentially connected between the main upper yoke portion and the main lower yoke portion, and the low-voltage coil group is arranged between the first main core column, the second main core column, and the third main core column.
[0006] In some embodiments, the low-voltage coil group comprises three low-voltage coils, and the low-voltage coils are wound on the first main core column, the second main core column, and the third main core column.
[0007] In some embodiments, the secondary three-phase magnetic core comprises a secondary upper yoke portion and a secondary lower yoke portion, the secondary upper yoke portion and the secondary lower yoke portion are arranged in parallel, and a first secondary core column, a second secondary core column, and a third secondary core column are sequentially connected between the secondary upper yoke portion and the secondary lower yoke portion, and the compensation coil group is arranged between the first secondary core column, the second secondary core column, and the third secondary core column.
[0008] In some embodiments, the compensation coil set comprises three compensation coils, and the compensation coils are wound on the first sub core column, the second sub core column and the third sub core column.
[0009] In some embodiments, the high-voltage coil set comprises three high-voltage coils, and the high-voltage coils are arranged outside the first main core column and the first sub core column, outside the second main core column and the second sub core column, and outside the third main core column and the third sub core column.
[0010] In some embodiments, the low-voltage coil and the compensation coil are provided with the high-voltage coil.
[0011] In summary, the utility model has the following beneficial effects:
[0012] The utility model discloses a low-voltage coil set is arranged on the main three-phase magnetic core, a compensation coil set is arranged on the sub three-phase magnetic core, and a high-voltage coil set is arranged outside the low-voltage coil set and the compensation coil set, so that voltage transformation, dynamic stepless voltage regulation, harmonic suppression and reactive compensation are integrated, the configuration of additional equipment is reduced, and system complexity and cost are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structural schematic diagram of the utility model;
[0014] Figure 2 It is the structural schematic diagram of the utility model and removes the high-voltage coil set;
[0015] Figure 3 It is the structural schematic diagram of the main three-phase magnetic core and the sub three-phase magnetic core of the utility model;
[0016] Figure 4 It is the sectional view of the utility model.
[0017] In the drawing: 1, main three-phase magnetic core;11, main upper yoke part;12, main lower yoke part;13, first main core column;14, second main core column;15, third main core column;2, sub three-phase magnetic core;21, sub upper yoke part;22, sub lower yoke part;23, first sub core column;24, second sub core column;25, third sub core column;3, low-voltage coil set;31, low-voltage coil;4, compensation coil set;41, compensation coil;5, high-voltage coil set;51, high-voltage coil. DETAILED DESCRIPTION
[0018] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the present utility model.
[0019] Reference Figures 1-4 A hybrid transformer, comprising a main three-phase magnetic core 1, a secondary three-phase magnetic core 2, a low-voltage coil group 3, a compensation coil group 4 and a high-voltage coil group 5. The secondary three-phase magnetic core 2 is arranged in parallel on the main three-phase magnetic core 1, and the low-voltage coil group 3 is arranged on the main three-phase magnetic core 1. The low-voltage coil group 3 is connected with a load and supplies power to the load end through the low-voltage coil group 3. The compensation coil group 4 is arranged on the secondary three-phase magnetic core 2 and connected with a converter, which can be connected with the input end of the converter. The converter can be composed of power electronic devices, which is prior art and will not be described here. The high-voltage coil group 5 is arranged outside the low-voltage coil group 3 and the compensation coil group 4 and connected with a power grid, which can be connected with the input end of the power grid to receive power input from the power grid. The voltage and current in the compensation coil group 4 are adjusted by reading the power consumption data of the load output end, thereby realizing dynamic stepless voltage regulation, harmonic suppression and reactive power compensation of the transformer.
[0020] In some embodiments, the main three-phase magnetic core 1 comprises a main upper yoke 11 and a main lower yoke 12, which are arranged in parallel. The first main core column 13, the second main core column 14 and the third main core column 15 are sequentially connected between the main upper yoke 11 and the main lower yoke 12. The first main core column 13, the second main core column 14 and the third main core column 15 not only provide stable structural support for the main three-phase magnetic core 1, but also serve as carriers for the low-voltage coil group 3. Specifically, the low-voltage coil group 3 comprises three low-voltage coils 31, which are tightly wound around the first main core column 13, the second main core column 14 and the third main core column 15, respectively, to ensure uniform distribution and efficient utilization of current during transmission. The three low-voltage coils 31 are connected in a d-connection mode, and can be connected in a y-connection mode.
[0021] The structure of the auxiliary three-phase magnetic core 2 is similar to that of the main three-phase magnetic core 1. The auxiliary three-phase magnetic core 2 comprises an auxiliary upper yoke portion 21 and an auxiliary lower yoke portion 22, the auxiliary upper yoke portion 21 and the auxiliary lower yoke portion 22 are arranged in parallel, and the first auxiliary core column 23, the second auxiliary core column 24 and the third auxiliary core column 25 are sequentially connected between the auxiliary upper yoke portion 21 and the auxiliary lower yoke portion 22. The compensation coil set 4 comprises three compensation coils 41, and the compensation coils 41 are wound on the first auxiliary core column 23, the second auxiliary core column 24 and the third auxiliary core column 25, so as to realize precise electromagnetic induction and adjustment function. The three compensation coils 41 are connected in a d connection mode, and can be connected in a y connection mode.
[0022] In some embodiments, the high-voltage coil set 5 comprises three high-voltage coils 51, and the high-voltage coils 51 are arranged outside the first main core column 13 and the first auxiliary core column 23, outside the second main core column 14 and the second auxiliary core column 24, and outside the third main core column 15 and the third auxiliary core column 25, and are wound outside the low-voltage coil set 3 and the compensation coil set 4, so as to ensure stable power quality. The three high-voltage coils 51 can be connected in a D connection mode, can be connected in a y connection mode, and can be connected in a delay triangle connection mode.
[0023] The specific working principle is as follows:
[0024] When the high-voltage power of the power grid is input to the high-voltage coil set 5, the low-voltage coil set 3 will generate corresponding power output through the principle of electromagnetic induction, which is used for the load.
[0025] By reading the power consumption data of the load output end, it is judged whether the current voltage meets the requirements. If the voltage fluctuation exceeds the preset range, the transformer will control the compensation coils 41 in the compensation coil set 4 to generate a corresponding magnetic field, change the high-voltage coil voltage through the principle of electromagnetic induction, and adjust the output voltage of the low-voltage coil set 3, so as to keep it stable, and realize the dynamic stepless voltage regulation function of the transformer.
[0026] By analyzing the current waveform of the load output end, the harmonic components, phase and amplitude are identified. Then, the compensation coils 41 in the compensation coil set 4 are controlled to compensate for the harmonics, suppress the influence of harmonics on the power grid and the load, and realize the harmonic suppression function of the transformer.
[0027] By reading the power factor data of the load output end, it is judged whether reactive power compensation is needed. If needed, the transformer will control the compensation coils 41 in the compensation coil set 4 to generate corresponding reactive power, improve the power factor of the system, reduce the reactive power loss, and realize the reactive power compensation function of the transformer.
[0028] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A hybrid transformer, characterized in that: The system includes a main three-phase magnetic core (1), a secondary three-phase magnetic core (2) is provided in parallel on the main three-phase magnetic core (1), a low-voltage coil group (3) is provided on the main three-phase magnetic core (1), the low-voltage coil group (3) is connected to the load, a compensation coil group (4) is provided on the secondary three-phase magnetic core (2), the compensation coil group (4) is connected to the converter, and a high-voltage coil group (5) is provided outside the low-voltage coil group (3) and the compensation coil group (4), the high-voltage coil group (5) is connected to the power grid.
2. A hybrid transformer according to claim 1, characterized in that: The main three-phase magnetic core (1) includes a main upper yoke (11) and a main lower yoke (12). The main upper yoke (11) and the main lower yoke (12) are arranged in parallel. A first main core column (13), a second main core column (14), and a third main core column (15) are connected sequentially between the main upper yoke (11) and the main lower yoke (12). The low-voltage coil group (3) is provided on the first main core column (13), the second main core column (14), and the third main core column (15).
3. A hybrid transformer according to claim 2, characterized in that: The low-voltage coil group (3) includes three low-voltage coils (31), and the first main core (13), the second main core (14), and the third main core (15) are all wound with the low-voltage coils (31).
4. A hybrid transformer according to claim 3, characterized in that: The secondary three-phase magnetic core (2) includes a secondary upper yoke (21) and a secondary lower yoke (22). The secondary upper yoke (21) and the secondary lower yoke (22) are arranged in parallel, and a first secondary core column (23), a second secondary core column (24), and a third secondary core column (25) are connected sequentially between the secondary upper yoke (21) and the secondary lower yoke (22). The compensation coil group (4) is provided on the first secondary core column (23), the second secondary core column (24), and the third secondary core column (25).
5. A hybrid transformer according to claim 4, characterized in that: The compensation coil group (4) includes three compensation coils (41), and the first auxiliary core column (23), the second auxiliary core column (24), and the third auxiliary core column (25) are all wound with the compensation coils (41).
6. A hybrid transformer according to claim 5, characterized in that: The high-voltage coil group (5) includes three high-voltage coils (51). The high-voltage coils (51) are provided outside the first main core (13) and the first auxiliary core (23), outside the second main core (14) and the second auxiliary core (24), and outside the third main core (15) and the third auxiliary core (25).
7. A hybrid transformer according to claim 1, characterized in that: The high-voltage coil (51) is provided outside the low-voltage coil (31) and the compensation coil (41).