CN216751520U - Megawatt-level electrolyzed water power supply device - Google Patents
Megawatt-level electrolyzed water power supply device Download PDFInfo
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- CN216751520U CN216751520U CN202220217586.7U CN202220217586U CN216751520U CN 216751520 U CN216751520 U CN 216751520U CN 202220217586 U CN202220217586 U CN 202220217586U CN 216751520 U CN216751520 U CN 216751520U
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Abstract
The utility model discloses a megawatt-level electrolytic water power supply device, and belongs to the technical field of hydrogen production by electrolytic water. The power supply device includes: a control cabinet, a phase-shifting transformer and a power cabinet; the power cabinet is of a three-layer structure, wherein one layer is a filter inductor and a capacitor, and the other two layers are a rectification power unit, a half-wave inversion unit, a high-frequency transformer and a full-wave rectification unit which are sequentially and electrically connected; the control cabinet is in communication connection with the power cabinet, the rectification power unit is electrically connected with the phase-shifting transformer, the full-wave rectification unit is electrically connected with the filter inductor and the capacitor, and the filter inductor and the capacitor are electrically connected with the water electrolysis device. In the utility model, mature rectification and inversion topology are adopted to realize new combination, the bridge arm is used as a target selection device, the advantage of large power of the traditional electrolytic rectifier and the advantage of exquisite structure of a switch power supply are integrated, and the megawatt-level power electrolytic water power supply is realized.
Description
Technical Field
The utility model relates to the technical field of hydrogen production by water electrolysis, in particular to a megawatt-level water electrolysis power supply device.
Background
The renewable energy consumption adopts the water electrolysis hydrogen production (green hydrogen) to become a social consensus, the water electrolysis hydrogen production power supply is important equipment, a double-reverse star type thyristor rectification circuit, a multi-pulse rectification circuit or an IGBT switching power supply are often adopted to be connected in parallel, and the like, but the current efficiency of the water electrolysis hydrogen production is not high, so that a megawatt-level water electrolysis power supply device is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of the prior art, the utility model provides a megawatt-level electrolyzed water power supply device. The power supply device includes: a control cabinet, a phase-shifting transformer and a power cabinet;
the power cabinet is of a three-layer structure, wherein one layer is a filter inductor and a capacitor, and the other two layers are a rectification power unit, a half-wave inversion unit, a high-frequency transformer and a full-wave rectification unit which are sequentially and electrically connected;
the control cabinet is in communication connection with the power cabinet, the rectification power unit is electrically connected with the phase-shifting transformer, the full-wave rectification unit is electrically connected with the filter inductor and the capacitor, and the filter inductor and the capacitor are electrically connected with the water electrolysis device.
Furthermore, the rectification power unit is a three-phase rectification power unit, and six diodes and seven water-cooling plates are alternately overlapped and pressed into a valve string.
Further, the valve is connected with a three-phase input bus bar and a positive and negative output bus bar in series,
the secondary side of the phase-shifting transformer is connected with a three-phase input bus bar of one layer of the rectifying power unit, three-phase triangular input is realized,
and the secondary side of the phase-shifting transformer is connected with a three-phase input busbar of the other layer of the rectifying power unit, and the three-phase input busbar is in a three-phase star shape.
Furthermore, the half-wave inversion unit is triple half-bridge inversion, the triple half-bridge inversion comprises three groups of half-bridge valve series bridges, each group of half-bridge valve series bridges is formed by pressing a pressure-welding type IGBT and a water-cooling plate, a capacitor of the triple half-bridge inversion is connected with a half-bridge power module through a laminated busbar,
the laminated busbar is provided with three ports, the input of two ports is connected with the positive and negative output busbars of the rectifying power unit, the other port is connected with the primary low-voltage end of the high-frequency transformer,
and the three crimping type IGBT parallel output terminals are connected with the primary side high-voltage end of the high-frequency transformer.
Furthermore, the full-wave rectification unit is formed by two diodes with opposite cathodes and a water cooling plate arranged between the two diodes in a pressed connection mode to form a string, the input end of the full-wave rectification unit is connected with the secondary side of the high-frequency transformer,
the two layers of full-wave rectification units are connected in parallel, and the output ends of the full-wave rectification units are connected with the input ends of the filter inductor and the capacitor.
Further, the output ends of the filter inductor and the capacitor output direct current with voltage of 100V and current of 10000A.
Further, the power supply device further includes: a water machine system;
the water machine system is connected with the power cabinet through a water path.
The technical scheme provided by the utility model has the beneficial effects that: in the utility model, the circuit topology of the power supply device is formed by connecting 2 groups of circuits in parallel, the circuits comprise a 12-pulse wave rectifying circuit, a 3-frequency multiplication half-bridge inverter, a high-frequency transformer and a full-wave rectifying circuit, the 12-pulse wave rectifying circuit reduces harmonic waves without adding harmonic wave treatment equipment, mature rectification and inversion topology is adopted to realize new combination, a bridge arm unit is used as a target selection device, the advantage of large power of the traditional electrolytic rectifier and the advantage of exquisite structure of a switch power supply are integrated, and the megawatt power electrolytic water power supply is realized.
Drawings
FIG. 1 is a schematic structural diagram of a megawatt-level electrolyzed water power supply apparatus provided by the present invention;
FIG. 2 is a top view of a power cabinet provided by the present invention;
FIG. 3 is a circuit topology diagram of a megawatt-level electrolyzed water power supply device provided by the utility model.
Reference numerals: 1-a control cabinet; 2-a phase-shifting transformer; 3-a power cabinet; 4-a water machine system; 5-filter inductance and capacitance; 6-a rectifying power unit; 7-half-wave inversion unit; 8-high frequency transformer; 9-full wave rectification unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, a megawatt-level electrolytic water power supply apparatus includes: the control cabinet 1 is in communication connection with the power cabinet 3, the power cabinet 3 is of a three-layer structure, the second layer is a filter inductor and a capacitor 5, the first layer and the third layer respectively comprise a rectification power unit 6, a half-wave inversion unit 7, a high-frequency transformer 8 and a full-wave rectification unit 9, the rectification power unit 6 is a three-phase rectification power unit, six high-power diodes and seven water-cooling plates are overlapped and pressed into a valve string in a staggered mode, the valve string is horizontally placed and supported by a steel frame, the structure is compact, the occupied area is small, the flow equalization problem can be avoided, the structure is simple and reliable, the valve is connected with a three-phase input bus bar and a positive and negative output bus bar in series, the three-phase input bus bar of the rectification power unit 6 of the first layer is connected with the secondary side of the phase-shifting transformer 2, the three-phase is input in a triangular mode, the three-phase input bus bar of the rectification power unit 6 of the third layer is connected with the secondary side of the phase-shifting transformer 2, three-phase star input.
Half-wave contravariant unit 7 is the three times half-bridge contravariant, the three times half-bridge contravariant includes three groups of half-bridge valve string bridges, every group half-bridge valve string bridge is pressed by crimping formula IGBT and water-cooling board, can improve the operating frequency of semiconductor 2 times, and the load is shared by three redundant devices of group, contravariant process realizes the high frequency contravariant with redundant device, reduce the device and generate heat, the electric capacity and the half-bridge power module of three times half-bridge contravariant are arranged the hookup through the stromatolite is female, half-bridge power module is equipped with RCD absorption and drive plate, the stromatolite is female to be arranged has three port, female arranging of two port input connection rectification power unit 6's positive negative output, the former limit low-voltage end of high frequency transformer 8 is connected to another port, three crimping formula IGBT parallel output connects the former limit high-voltage end of high frequency transformer 8.
The full-wave rectification units 9 are formed by oppositely connecting cathodes of two diodes, a water cooling plate is arranged between the diodes in a pressed connection mode to form a string, the input end of each full-wave rectification unit 9 is connected with the secondary side of the high-frequency transformer 8, the two layers of full-wave rectification units 9 are connected in parallel, the output ends of the full-wave rectification units are connected with a filter inductor L1 and a capacitor C3, the output ends of the filter inductor and the capacitor 5 are electrically connected with the water electrolysis device, and the water electrolysis device is supplied with direct current with voltage of 100V and current of 10000A. The power cabinet 3 is connected with the water machine system 4 by a water path, thereby achieving the purpose of cooling.
It is worth to be noted that, in the utility model, the circuit topology of the power supply device is formed by connecting 2 groups of circuits in parallel, and comprises a 12-pulse wave rectification circuit, a 3-frequency multiplication half-bridge inversion circuit, a high-frequency transformer and a full-wave rectification circuit, wherein the 12-pulse wave rectification circuit reduces harmonic waves without adding harmonic wave treatment equipment, and adopts mature rectification and inversion topologies to realize new combination, and a bridge arm unit is used as a target selection device, so that the advantages of large power of the traditional electrolytic rectifier and the advantages of exquisite structure of a switching power supply are integrated into a whole, and the megawatt power electrolytic water power supply is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A megawatt-level electrolytic water power supply apparatus, characterized in that the power supply apparatus comprises: the device comprises a control cabinet (1), a phase-shifting transformer (2) and a power cabinet (3);
the power cabinet (3) is of a three-layer structure, wherein one layer is a filter inductor and a capacitor (5), and the other two layers are a rectification power unit (6), a half-wave inversion unit (7), a high-frequency transformer (8) and a full-wave rectification unit (9) which are electrically connected in sequence;
the control cabinet (1) is in communication connection with the power cabinet (3), the rectification power unit (6) is electrically connected with the phase-shifting transformer (2), the full-wave rectification unit (9) is electrically connected with the filter inductor and the capacitor (5), and the filter inductor and the capacitor (5) are electrically connected with the water electrolysis device.
2. A megawatt-level electrolytic water power plant according to claim 1, characterized in that the rectifying power unit (6) is a three-phase rectifying power unit, and six diodes and seven water-cooled plates are alternately stacked and pressed into a valve string.
3. The megawatt-level electrolytic water power supply device according to claim 2, wherein the valve is connected in series with a three-phase input busbar and a positive and negative output busbar,
the secondary side of the phase-shifting transformer (2) is connected with a three-phase input bus bar of one layer of the rectifying power unit (6) and three-phase triangular input,
and the secondary side of the phase-shifting transformer (2) is connected with a three-phase input busbar of the other layer of the rectifying power unit (6) and is input in a three-phase star shape.
4. A megawatt-level electrolyzed water power supply device as claimed in claim 3, characterized in that the half-wave inverter unit (7) is a triple half-bridge inverter, the triple half-bridge inverter comprises three groups of half-bridge valve series bridges, each group of the half-bridge valve series bridges is formed by pressing a crimping type IGBT and a water-cooling plate, the capacitance of the triple half-bridge inverter and the half-bridge power module are connected by a laminated busbar,
the laminated busbar is provided with three ports, the input of two ports is connected with the positive and negative output busbars of the rectifying power unit (6), the other port is connected with the primary low-voltage end of the high-frequency transformer (8),
and the three crimping type IGBTs are connected in parallel and output to the primary side high-voltage end of the high-frequency transformer (8).
5. A power supply unit for megawatt-grade electrolytic water according to claim 4, characterized in that the full wave rectifying unit (9) is formed by two diodes with their cathodes facing each other, a water cooling plate is arranged between them and pressed in series, the input end is connected to the secondary side of the high frequency transformer (8),
the two layers of full-wave rectification units (9) are connected in parallel, and the output ends of the full-wave rectification units are connected with the input ends of the filter inductor and the capacitor (5).
6. A megawatt-level electrolytic water power supply device according to claim 5, characterized in that the output end of the filter inductor and the capacitor (5) outputs DC with voltage of 100V and current of 10000A.
7. A megawatt-level electrolytic water power plant according to claim 1, characterized in that the power plant further comprises: a water machine system (4);
the water machine system (4) is connected with the power cabinet (3) through a water path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220217586.7U CN216751520U (en) | 2022-01-26 | 2022-01-26 | Megawatt-level electrolyzed water power supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220217586.7U CN216751520U (en) | 2022-01-26 | 2022-01-26 | Megawatt-level electrolyzed water power supply device |
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| CN216751520U true CN216751520U (en) | 2022-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115967283A (en) * | 2023-03-17 | 2023-04-14 | 成都英格利科技有限公司 | Rectifying power supply topological structure for hydrogen production by water electrolysis and control method |
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- 2022-01-26 CN CN202220217586.7U patent/CN216751520U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115967283A (en) * | 2023-03-17 | 2023-04-14 | 成都英格利科技有限公司 | Rectifying power supply topological structure for hydrogen production by water electrolysis and control method |
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