High-voltage pulse transformer for solid-state modulator

Abstract

The utility model discloses a high-voltage pulse transformer for a solid-state modulator, which relates to the field of pulse power electronics and comprises an oil tank, a lower plate and an upper plate are arranged in an inner cavity of the oil tank, the lower plate is connected with the upper plate through four hanging rods, and two split iron cores are mounted and clamped by the lower plate, the upper plate and the four hanging rods. The utility model relates to a pulse transformer iron core which is divided into two parts, a mounting space is reserved between the divided iron cores, a primary framework is arranged on the divided iron cores, and a pulse transformer primary winding is wound on the primary framework. Compared with the prior art, the pulse transformer iron core has the beneficial effects that the transformer iron core is divided into two parts by adopting an iron core division scheme; the primary winding voltage on the segmented iron core is only 1 / 2 of the original voltage, the transformation ratio of the transformer is doubled, and the total transformation ratio of the transformer can reach 100-1000 and is far higher than that of a traditional high-voltage pulse transformer along with the increase of the number of segmented iron cores (such as 3-10 parts which are easy to realize).

Description

Technical Field

[0001] The utility model relates to the field of pulse power electronics, in particular to a high-voltage pulse transformer for a solid-state modulator. Background Art

[0002] As a special component, high-voltage pulse transformers have the functions of voltage boosting, impedance matching, energy transfer, etc. As the core component of pulse power electronic equipment, high-voltage pulse transformers are widely used in radar transmitters, high-power microwave sources and other technical fields.

[0003] At present, the research, design and production of high-voltage pulse transformers in China are mainly concentrated on the single-core transformer technology with medium and low transformation ratio. The pulse transformer core is a whole. The product of the primary current and the primary voltage is equal to the product of the secondary current and the secondary voltage. The voltage transformation ratio is N, and the current transformation ratio is 1 / N.

[0004] Single-core transformers have disadvantages such as high primary pulse voltage, large size, and heavy weight. The transformation ratio can only be designed between 4 and 30, which needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a high-voltage pulse transformer for a solid-state modulator to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-voltage pulse transformer for a solid-state modulator comprises an oil tank, wherein a lower plate and an upper plate are arranged in an inner cavity of the oil tank, wherein the lower plate is connected to the upper plate via four suspension rods, wherein the lower plate, the upper plate and the four suspension rods mount and clamp two split iron cores, wherein an installation spacing is reserved between the split iron cores, wherein a primary skeleton is mounted on the split iron cores, wherein a primary winding of a pulse transformer is wound on the primary skeleton, wherein a secondary skeleton is mounted on magnetic columns on both sides of the split iron cores respectively, wherein the secondary skeleton completely surrounds the magnetic columns of the split iron cores, and wherein a secondary winding of the pulse transformer is wound on the secondary skeleton.

[0008] As a further solution of the utility model: 4 moving wheels are installed at the bottom of the oil tank, a cover plate is installed on the top of the oil tank, a lifting lug is welded on the cover plate, and a desiccant, a primary connecting plate, and a signal connecting plate are arranged on the cover plate.

[0009] As a further solution of the utility model: a biasing frame is also installed on the divided iron core.

[0010] As a further solution of the present invention: the primary winding is in the form of 18 to 36 independent single turns.

[0011] As a further solution of the utility model: the number of turns of the secondary winding is between 20 and 100 turns.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model adopts a core splitting scheme to split the transformer core, such as dividing it into two parts. Then, the primary winding voltage on the split core is only 1 / 2 of the original voltage, and the transformer transformation ratio is doubled. With the increase in the number of core splits (such as 3 to 10 parts which are easily achievable), the total transformation ratio of the transformer can reach 100 to 1000, which is much higher than the traditional high-voltage pulse transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of the outer surface of the fuel tank.

[0014] Figure 2 Schematic diagram of the structure of the inner cavity of the fuel tank.

[0015] Figure 3 A cross-sectional view of the inner cavity of the fuel tank.

[0016] Figure 4 The circuit diagram of a high voltage pulse transformer for a solid-state modulator.

[0017] In the figure: 1-oil tank, 2-moving wheel, 3-lifting ear, 4-cover plate, 5-desiccant, 6-primary connecting plate, 7-signal connecting plate, 8-observation window, 9-lower plate, 10-upper plate, 11-suspending rod, 12-iron core, 13-secondary frame, 14-bias magnet frame, 15-primary frame. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] See also Figure 2 A high-voltage pulse transformer for a solid-state modulator comprises an oil tank 1, wherein a lower plate 9 and an upper plate 10 are arranged in an inner cavity of the oil tank 1, wherein the lower plate 9 is connected to the upper plate 10 via four suspension rods 11, wherein the lower plate 9, the upper plate 10 and the four suspension rods 11 mount and clamp a divided iron core 12, wherein an installation spacing is reserved between the divided iron cores 12, wherein a primary skeleton 15 is mounted on the divided iron core 12, wherein a primary winding of a pulse transformer is wound on the primary skeleton 15, wherein a secondary skeleton 13 is mounted on the magnetic columns on both sides of the divided iron core 12 respectively, wherein the secondary skeleton 13 completely surrounds the magnetic columns of the divided iron core 12, and wherein a secondary winding of a pulse transformer is wound on the secondary skeleton 13.

[0020] In the specific embodiment: see Figure 2 and Figure 3 , taking the example of the iron core 12 being divided into two pieces, the two split iron cores 12 are installed and clamped by the lower plate 9, the upper plate 10 and the four suspension rods 11, and an installation spacing is left between the two split iron cores 12. Then the primary skeleton 15 is installed on the two split iron cores 12 respectively, and the primary winding of the pulse transformer is wound on the primary skeleton 15. The number of primary windings is based on design requirements, generally in the form of 18 to 36 independent single turns. After the primary winding is wound, the secondary skeleton 13 is installed. The secondary skeleton 13 is divided into two parts, one of which is installed on the left and right columns of the split iron core 12 respectively. The secondary skeleton 13 fully surrounds the single-sided magnetic columns of the two split iron cores 12; the secondary winding of the pulse transformer is wound on the secondary skeleton 13, and the number of turns of the secondary winding is between 20 and 100 turns. By assembling and forming the above structure and winding the primary and secondary windings of the pulse transformer, the transformation ratio of the secondary output of the pulse transformer relative to the primary input is achieved to reach 100-1000, and it has the characteristics of small distributed parameters and excellent output waveform.

[0021] In this example: See Figure 1 Four moving wheels 2 are installed at the bottom of the oil tank 1, and a cover plate 4 is installed on the top of the oil tank 1. A lifting ear 3 is welded on the cover plate 4, and a desiccant 5, a primary connecting plate 6, and a signal connecting plate 7 are arranged on the cover plate 4.

[0022] The moving wheel 2 facilitates the movement of the oil tank 1 and the transformer, the lifting ear 3 facilitates the transportation of the transformer, the primary connecting plate 6 and the signal connecting plate 7 connect related devices, and an observation window 8 is also provided on the side of the oil tank 1. The observation window 8 is installed with transparent glass to facilitate the observation of the operation of the pulse transformer. The moving wheel 2, the cover plate 4, the lifting ear 3, the desiccant 5, the primary connecting plate 6, the signal connecting plate 7, and the observation window 8 are all common settings and will not be repeated here.

[0023] In this example: See Figure 2 A biasing frame 14 is also installed on the split core 12 .

[0024] The bias magnet frame 14 completely surrounds any one of the magnetic columns on both sides of the split iron core 12 , and a bias magnet winding is wound on the bias magnet frame 14 to be used as the pulse transformer iron core bias magnet.

[0025] In this example: See Figure 3 , the primary winding is in the form of 18 to 36 independent single turns.

[0026] The number of primary windings depends on the design requirements and is generally 18 to 36 independent single-turn forms.

[0027] In this example: See Figure 3 , the number of turns of the secondary winding is between 20 and 100 turns.

[0028] The number of turns of the secondary winding is generally between 20 and 100.

[0029] For specific examples, see Figure 4 The primary of the pulse transformer is two iron cores 12 ( Figure 4 The primary coil and the secondary coil of the transformer are connected in parallel, the transformation ratio of a single core is 54, and the total transformation ratio of the pulse transformer is 108. Here, the iron is divided into two pieces, and it can also be divided into other numbers.

[0030] The primary of the pulse transformer is connected to the 12-channel (1#-12#) discharge pulse power supply of the front stage. The parameters of each discharge pulse power supply are 1200V / 1000A, and the pulse width is continuously adjustable from 5-15μs; after the 12 pulses are boosted by the high-voltage pulse transformer, they reach a high-power output pulse source with a maximum pulse voltage of 130kV and a maximum pulse current of 90A. The boost ratio of the high-voltage pulse transformer is 108. The high-voltage pulse transformer cooperates with a capacitor voltage divider to measure the output pulse voltage waveform, and the current transformer measures the output pulse current waveform.

[0031] The working principle of the utility model is: by dividing the transformer core 12, the transformer ratio is increased. As the number of divisions of the core 12 increases (such as 3 to 10 parts which are easily achievable), the total transformer ratio can reach 100 to 1000, which is much higher than that of traditional high-voltage pulse transformers.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high voltage pulse transformer for a solid state modulator, characterized in that: The high-voltage pulse transformer for the solid-state modulator comprises an oil tank, wherein a lower plate and an upper plate are arranged in an inner cavity of the oil tank, wherein the lower plate is connected to the upper plate via four suspension rods, wherein the lower plate, the upper plate and the four suspension rods mount and clamp two split iron cores, wherein an installation spacing is reserved between the split iron cores, wherein a primary skeleton is mounted on the split iron cores, wherein a primary winding of a pulse transformer is wound on the primary skeleton, wherein a secondary skeleton is mounted on magnetic columns on both sides of the split iron cores respectively, wherein the secondary skeleton completely surrounds the magnetic columns of the split iron cores, and wherein a secondary winding of a pulse transformer is wound on the secondary skeleton.

2. The high-voltage pulse transformer for solid-state modulator according to claim 1, characterized in that: Four moving wheels are installed at the bottom of the oil tank, and a cover plate is installed on the top of the oil tank. The cover plate is welded with lifting ears, and a desiccant, a primary connecting plate, and a signal connecting plate are arranged on the cover plate.

3. The high-voltage pulse transformer for solid-state modulator according to claim 1, characterized in that: A bias magnetic frame is also installed on the divided iron core.

4. The high-voltage pulse transformer for a solid-state modulator according to any one of claims 1 to 3, characterized in that: The primary winding is in the form of 18 to 36 individual single turns.

5. The high-voltage pulse transformer for a solid-state modulator according to any one of claims 1 to 3, characterized in that: The number of turns of the secondary winding is between 20 and 100.

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