Novel voltage-regulating rectifier transformer for hydrogen production

Abstract

The utility model provides a novel voltage-regulating rectifier transformer for hydrogen production, which consists of an iron core and a coil, and the coil consists of a primary side and a secondary side; the primary side comprises three series coils, a plurality of basic coils and a plurality of transformer bodies; the series coil is connected with an A1 inlet wire, a B1 inlet wire and a C1 inlet wire, the other end of the series coil is connected with a basic coil in series, and an A2 inlet wire, a B2 inlet wire and a C2 inlet wire are connected between the series coil and the basic coil; the basic coil is connected with the body; the secondary side is composed of a plurality of groups of phase-shifting wiring windings. According to the utility model, good electric energy quality and better harmonic wave effect are ensured, the number of pulse waves is large, and the cost can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrogen production voltage regulating rectifier transformer, especially to a novel hydrogen production voltage regulating rectifier transformer. BACKGROUND

[0002] Hydrogen energy is jumping into the spotlight of the global energy field in an unstoppable manner, and the rectifier transformer, as a key role, efficiently sorts and converts unstable electric energy to provide stable and reliable power support for hydrogen energy power generation projects. For wind power generation, photovoltaic power generation and energy storage, two power sources of 35KV and 10KV are usually supplied, and the quality of the electric energy supplied by them generally has defects, and the harmonic stability requirement is relatively strict, so a transformer with a large number of pulses is needed.

[0003] In recent years, the transformer application in the hydrogen production industry is more and more widely used. For the hydrogen production voltage regulating rectifier transformer, the conventional design method is as follows: the pulse number is 24, when the network side incoming line voltage is 35KV, the whole transformer is designed according to 35KV, when the network side incoming line voltage is 10KV, the whole transformer is designed according to 10KV, if the user needs both 35KV incoming line and 10KV incoming line, two transformers need to be designed to meet the requirements of better electric energy quality and harmonic effect, one transformer incoming line voltage is 35KV, and the other transformer incoming line voltage is 10KV, the transformer used is composed of a core and a coil, and the coil is composed of a primary side and a secondary side; the primary side includes a high-voltage coil and a voltage regulating coil, the wiring principle diagram is as shown in Figure 1 , and the modulation winding arrangement diagram is as shown in Figure 2 , wherein 1 is a high-voltage coil, and 2 is a voltage regulating coil, but this kind of design needs two transformers to meet the design, and the cost is high. INVENTION CONTENTS

[0004] In view of the defects of the prior art, the utility model aims at providing a novel hydrogen production voltage regulating rectifier transformer, which can guarantee good electric energy quality and better harmonic effect, has a large number of pulses, and can save cost.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model discloses a novel hydrogen production voltage regulating rectifier transformer, which is composed of a core and a coil, and the coil is composed of a primary side and a secondary side; the primary side includes three series coils, a plurality of basic coils and a plurality of bodies; the series coil is connected with A1 incoming line, B1 incoming line and C1 incoming line, and the other end is connected with the basic coil in series, and the series coil and the basic coil are connected with A2 incoming line, B2 incoming line and C2 incoming line; the basic coil is connected with the body; the secondary side is composed of a plurality of groups of phase-shifting connection windings.

[0007] Based on the foregoing scheme, in a preferred scheme, the rated voltage of the series coil is 25KV.

[0008] Based on the foregoing scheme, in a preferred scheme, the rated voltage of the basic coil is 10KV.

[0009] Based on the foregoing scheme, in a preferred scheme, the primary side adopts a zigzag star or a delayed delta triangle phase-shifting mode.

[0010] Based on the foregoing scheme, in a preferred scheme, the secondary side adopts four groups of star-delta windings

[0011] Based on the foregoing scheme, in a preferred scheme, the number of the bodies is 4.

[0012] Based on the foregoing scheme, in a preferred scheme, the secondary side has windings connected into y or d respectively, and the phase shift between the line voltages of the two secondary windings is 30°.

[0013] The working principle and application range of the utility model are as follows:

[0014] When the user needs to use 35KV incoming line voltage, A1 incoming line, B1 incoming line and C1 incoming line of the series coil are connected, at this time, the incoming line voltage is 25KV of the series coil plus 10KV of the basic coil to reach the requirement of 35KV, when the user needs to use 10KV incoming line voltage, A2B2C2 incoming line of the basic coil is connected, at this time, the incoming line voltage is 10KV.

[0015] The rectifier transformer increases the pulse number, so that the output voltage of each phase is closer to a sine wave, thereby reducing the generation of harmonics, for example, 12-pulse rectification can more effectively reduce harmonic current than 6-pulse rectification, because 12-pulse rectification can divide the current waveform into more parts, so that the wave of each part is smoother.

[0016] For the original technology, the conventional design method for the hydrogen production voltage regulating rectifier transformer is that: when the network side incoming line voltage is 35KV, the whole transformer is designed according to 35KV, when the network side incoming line voltage is 10KV, the whole transformer is designed according to 10KV, if the user needs both 35KV incoming line and 10KV incoming line, two transformers need to be designed to meet the requirements of better power quality and harmonic effect; while for the hydrogen production industry double power and 48-pulse hydrogen production voltage regulating rectifier transformer of the present scheme, the harmonic effect is good, and the voltage harmonic superposition situation does not occur, the parameter requirements of various electrolytic cells can be met, the land occupation area is small, the maintenance cost is low, the cost of the transformer is greatly reduced, the materials are saved, and the present scheme is suitable for new energy hydrogen production application scenes of unstable power sources such as wind power generation, photovoltaic power generation and energy storage, the requirements of the user are met to the greatest extent, and the highest cost performance is provided.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model discloses a double power supply and 48 pulse pressure regulating rectifier transformer for hydrogen production industry, harmonic effect is good, does not bring the voltage harmonic superposition situation, can adapt to the parameter demand of various electrolytic cell, and the land occupation is small, and the maintenance cost is low, and the cost of transformer is greatly reduced, and the material is saved, is applicable to the new energy hydrogen production application scene of unstable power supply such as wind power generation, photovoltaic power generation, energy storage, maximumly satisfies the requirement of user, provides the highest cost performance. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is the wiring principle diagram of prior art of the utility model.

[0021] Figure 2 It is the modulation winding arrangement drawing of prior art of the utility model.

[0022] Figure 3 It is the wiring principle diagram of the embodiment of the utility model.

[0023] Figure 4 It is the modulation winding arrangement drawing of the embodiment of the utility model.

[0024] In the drawing, 1 is a high-voltage coil, 2 is a voltage regulating coil, 3 is a series coil, and 4 is a basic coil. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] like Figure 3 , Figure 4 As shown, this embodiment of a novel voltage-regulating rectifier transformer for hydrogen production consists of an iron core and coils. The coils are composed of a primary side and a secondary side. The primary side includes three series-connected coils, several basic coils, and several transformer bodies. The series-connected coils are connected to input lines A1, B1, and C1, and the other end is connected in series with the basic coils. Input lines A2, B2, and C2 are connected between the series-connected coils and the basic coils. The basic coils are connected to the transformer bodies. The secondary side consists of several sets of phase-shifting windings. The rated voltage of the series-connected coils is 25KV. The rated voltage of the basic coils is 10KV. When the user requires a 35kV input voltage, input lines A1, B1, and C1 are connected from the series coil. The input voltage at this time is the 25kV voltage of the series coil plus the 10kV voltage of the basic coil to achieve the 35kV requirement. When the user requires a 10kV input voltage, input lines A2, B2, and C2 are connected from the basic coil. The input voltage at this time is 10kV. The modulation winding arrangement is as follows... Figure 4 As shown, there are six bushings on the high-voltage side of the transformer.

[0029] The primary side high voltage transformer has been converted from the original two transformer bodies (such as...) using existing technology. Figure 1 (As shown) Improved to 4 bodies (as shown) Figure 3 As shown). The secondary side consists of two sets of star-shaped points from the existing technology (such as...). Figure 1 (As shown) Improved to 4 sets of star points (such as)Figure 3 (As shown).

[0030] In this embodiment, the primary side adopts a zigzag star or extended delta phase-shifting configuration, while the secondary side uses a star-delta phase-shifting connection. The secondary side has windings connected in either y or d configurations. The phase shift between the line voltages of the corresponding terminals of these two secondary windings is 30°. Using two star-delta connected windings on the secondary side can double the pulse count of the rectifier circuit. If a bridge rectifier circuit is used, the pulse count can reach 12. Therefore, using four sets of star-delta windings on the secondary side can achieve a total pulse count of 48.

[0031] This embodiment can simultaneously meet the user's grid-side voltage requirements of 35KV and 10KV, and can be implemented on a single transformer.

[0032] The above provides a detailed description of a novel voltage-regulating rectifier transformer for hydrogen production. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel voltage-regulating rectifier transformer for hydrogen production, comprising an iron core and a coil, wherein the coil comprises a primary side and a secondary side; characterized in that, The primary side includes three series-connected coils, several basic coils, and several transformer bodies; the series-connected coils are connected to the A1 input line, B1 input line, and C1 input line, and the other end is connected in series with the basic coils. The series-connected coils and the basic coils are connected to the A2 input line, B2 input line, and C2 input line; the basic coils are connected to the transformer bodies; the secondary side consists of several sets of phase-shifted windings.

2. The novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The rated voltage of the series coil is 25KV.

3. A novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The rated voltage of the basic coil is 10KV.

4. A novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The primary phase shift method adopts a zigzag star shape or an extended triangle phase shift method.

5. A novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The secondary side uses four sets of star-angle windings.

6. A novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The number of the vessel body is 4.

7. A novel voltage-regulating rectifier transformer for hydrogen production according to claim 1, characterized in that, The secondary side has windings connected in the form of y or d respectively, and the phase shift between the line voltages of the same terminals of the two secondary windings is 30°.

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