Phase-shifting rectifier transformer matched with four-quadrant frequency converter

Abstract

The utility model discloses a phase-shifting rectifier transformer matched with a four-quadrant frequency converter, which comprises a high-voltage coil and a low-voltage coil, the high-voltage coil comprises a first high-voltage wire cake, a second high-voltage wire cake and a third high-voltage wire cake, and the low-voltage coil comprises a first low-voltage wire cake, a second low-voltage wire cake and a third low-voltage wire cake. The height of the first high-voltage wire cake is equal to that of the first low-voltage wire cake, the height of the second high-voltage wire cake is equal to that of the second low-voltage wire cake, and the height of the third high-voltage wire cake is equal to that of the third low-voltage wire cake. The bidirectional feedback type four-quadrant alternating-current power supply has the beneficial effects that by reasonably distributing the number of cakes and the number of turns of the coils of the high-voltage coil and the low-voltage coil, forward and reverse energy conversion can be realized under the condition that a bidirectional switching device and a feedback control technology are adopted by the bidirectional feedback type four-quadrant alternating-current power supply; the transformer matched with the four-quadrant frequency converter is simple in structure, more stable in structure and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a phase-shifting rectifier transformer for use with a four-quadrant frequency converter. Background Technology

[0002] The bidirectional feedback four-quadrant AC power supply employs bidirectional switching devices and feedback control technology to achieve forward and reverse energy conversion. Its working principle is as follows:

[0003] Forward operating mode: In forward operating mode, the input power supply converts DC to AC through a half-bridge converter to supply the load. Simultaneously, a feedback loop control circuit stabilizes and regulates the output voltage and current.

[0004] Reverse operating mode: In reverse operating mode, the load releases energy to the power supply, converting AC to DC and feeding it back into the power grid. Similarly, the feedback loop control circuit achieves stable regulation of the output voltage and current.

[0005] The bidirectional feedback four-quadrant AC power supply has the following structural features: it can realize forward and reverse energy conversion, flexibly adapting to the energy flow requirements under different operating conditions; it can achieve high-efficiency energy conversion and reduce energy loss; through the feedback control loop, it can achieve precise adjustment and stable control of output voltage and current, ensuring stable and reliable output quality; and it is suitable for long-term stable operation under various harsh environmental conditions.

[0006] Based on the above characteristics, the bidirectional feedback four-quadrant AC power supply has many advantages in practical applications, mainly reflected in the following aspects: it is suitable for electric vehicle charging piles, realizing the charging and energy feedback of electric vehicle batteries, improving charging efficiency and energy utilization; it is suitable for renewable energy systems such as solar and wind power, realizing bidirectional energy conversion and storage, improving the overall efficiency and stability of the system; it is suitable for energy regulation and energy storage in industrial power systems, realizing frequency and voltage regulation and stable operation of the power grid, improving the flexibility and controllability of the power system.

[0007] However, bidirectional feedback four-quadrant AC power supplies also have shortcomings, such as a relatively complex bidirectional energy conversion structure, low conversion efficiency, and a tendency to waste energy. Utility Model Content

[0008] The purpose of this invention is to provide a phase-shifting rectifier transformer for use with a four-quadrant frequency converter, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a phase-shifting rectifier transformer for use with a four-quadrant frequency converter, the phase-shifting rectifier transformer including a high-voltage coil and a low-voltage coil, the high-voltage coil including a first high-voltage coil, a second high-voltage coil and a third high-voltage coil, the low-voltage coil including a first low-voltage coil, a second low-voltage coil and a third low-voltage coil, the height of the first high-voltage coil being equal to the height of the first low-voltage coil, the height of the second high-voltage coil being equal to the height of the second low-voltage coil, and the height of the third high-voltage coil being equal to the height of the third low-voltage coil.

[0010] Preferably, the height of the high-voltage coil is equal to the height of the low-voltage coil.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by rationally allocating the number of coils and turns of the high-voltage coil and the low-voltage coil, this utility model can achieve forward and reverse energy conversion in the case of bidirectional feedback four-quadrant AC power supply using bidirectional switching devices and feedback control technology; this utility model has a simple structure, making the transformer structure of the four-quadrant frequency converter more stable and the cost low. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the high-voltage coil structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the low-voltage coil structure of this utility model.

[0014] In the diagram: 1. High-voltage coil; 11. First high-voltage coil; 12. Second high-voltage coil; 23. Third high-voltage coil; 2. Low-voltage coil; 21. First low-voltage coil; 22. Second low-voltage coil; 23. Third low-voltage coil. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 2This utility model provides a technical solution: a phase-shifting rectifier transformer for use with a four-quadrant frequency converter. The phase-shifting rectifier transformer includes a high-voltage coil 1 and a low-voltage coil 2. The high-voltage coil 1 includes a first high-voltage coil 11, a second high-voltage coil 12, and a third high-voltage coil 13. The low-voltage coil 2 includes a first low-voltage coil 21, a second low-voltage coil 22, and a third low-voltage coil 23. The height of the first high-voltage coil 11 is equal to the height of the first low-voltage coil 21, the height of the second high-voltage coil 12 is equal to the height of the second low-voltage coil 22, and the height of the third high-voltage coil 13 is equal to the height of the third low-voltage coil 23.

[0017] In one embodiment of this utility model, the height of the high-voltage coil 1 is equal to the height of the low-voltage coil 2, that is, the total height H1 of the high-voltage coil 1 is equal to the total height H2 of the low-voltage coil 2.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phase-shifting rectifier transformer for use with a four-quadrant frequency converter, characterized in that: The phase-shifting rectifier transformer includes a high-voltage coil (1) and a low-voltage coil (2). The high-voltage coil (1) includes a first high-voltage coil (11), a second high-voltage coil (12), and a third high-voltage coil (13). The low-voltage coil (2) includes a first low-voltage coil (21), a second low-voltage coil (22), and a third low-voltage coil (23). The height of the first high-voltage coil (11) is equal to the height of the first low-voltage coil (21). The height of the second high-voltage coil (12) is equal to the height of the second low-voltage coil (22). The height of the third high-voltage coil (13) is equal to the height of the third low-voltage coil (23).

2. The phase-shifting rectifier transformer for a four-quadrant frequency converter according to claim 1, characterized in that: The height of the high-voltage coil (1) is equal to the height of the low-voltage coil (2).

Images