Hydrogen production power supply, wind generating set and hydrogen production system
By using two inductor branch units connected interleaved in the DC chopper of the hydrogen-making power supply to disperse the inductor volume, the problems of large inductor volume and high current accuracy are solved, and smaller equipment volume and lower cost are achieved.
Patent Information
- Application Number
- CN202310781870.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-29
- Publication Date
- 2024-12-31
AI Technical Summary
The inductor volume in the existing hydrogen production power supply is large, which leads to inconvenient design and installation, and has high requirements for DC current accuracy, which increases equipment costs.
Two interlaced inductor branch units in a DC chopper are used to disperse the inductor volume, reduce the space occupied by the inductor, and improve the current accuracy.
It reduces the volume and cost of hydrogen production power supply, improves current accuracy, and meets the high accuracy requirements of hydrogen production equipment for DC current.
Smart Images
Figure CN119231921A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of wind power generation, and in particular relates to a hydrogen production power supply, a wind power generator set and a hydrogen production system. Background Art
[0002] As society continues to develop, the demand for energy is gradually increasing. In order to meet the demand for energy, renewable energy has become a key research direction. Wind power generation is one of the important development directions of renewable energy and can be applied in many fields. For example, wind power generation can be used to produce hydrogen, but the hydrogen production equipment needs to be equipped with a hydrogen production power supply, which can convert the received electrical energy into electrical energy that is compatible with the hydrogen production equipment and provide it to the hydrogen production equipment.
[0003] Figure 1 FIG. 1 is a schematic diagram of a hydrogen production power supply in the prior art. Figure 1 As shown, the hydrogen production power supply includes an AC filter 11, a rectifier 12 and a chopper 13, and the chopper 13 includes a switch tube 131, a switch tube 132 and an inductor 133. One end of the inductor 133 is connected to the switch tube 131 and the switch tube 132, and the other end of the inductor is used to connect to the hydrogen production equipment, and the end of the switch tube 132 not connected to the switch tube 131 is used to connect to the hydrogen production equipment. Due to the requirements of hydrogen production on the purity of hydrogen, the hydrogen production power supply needs to output a low-ripple DC current, and the current accuracy requirements for the DC current are relatively high, which requires a larger inductance in the chopper 13. Correspondingly, the volume structure of the inductor 133 will increase, which is not convenient for design and installation. Summary of the invention
[0004] The embodiments of the present application provide a hydrogen production power supply, a wind turbine generator set, and a hydrogen production system, which can reduce the volume of the hydrogen production power supply and facilitate the design and installation of the hydrogen production power supply.
[0005] In a first aspect, an embodiment of the present application provides a hydrogen production power supply, comprising: a rectifier module; a DC chopper, comprising a switch unit, a first inductance branch unit, and a second inductance branch unit, wherein the first end of the switch unit is electrically connected to the first output end of the rectifier module, the second end of the switch unit is electrically connected to the first inductance branch unit, the first inductance branch unit is electrically connected to the second inductance branch unit, and the second inductance branch unit is electrically connected to the second output end of the rectifier module; wherein the first inductance branch unit and the second inductance branch unit each include an inductor, and the ripple current of the DC power output by the DC chopper is smaller than the ripple current of the DC power output by the rectifier module.
[0006] In a second aspect, an embodiment of the present application provides a wind turbine generator set, comprising: a generator; a hydrogen production power supply of the first aspect, wherein the input of a rectifier module in the hydrogen production power supply is electrically connected to the output of the generator, and the output of a DC chopper in the hydrogen production power supply is configured to be electrically connected to a hydrogen production device.
[0007] In a third aspect, an embodiment of the present application provides a hydrogen production system, comprising: the wind turbine generator set of the second aspect; and hydrogen production equipment, wherein the hydrogen production equipment is electrically connected to the output of a DC chopper in a hydrogen production power supply of the wind turbine generator set.
[0008] The embodiment of the present application provides a hydrogen production power supply, a wind turbine generator set and a hydrogen production system. The hydrogen production power supply includes a rectifier module and a DC chopper. The DC chopper includes a switch unit, a first inductance branch unit and a second inductance branch unit. The switch unit can control whether the current output by the rectifier module can enter the DC chopper. The first inductance branch unit and the second inductance branch unit are staggered and connected, and the first inductance branch unit and the second inductance branch unit each include an inductor. The inductance in the hydrogen production power supply is dispersed into the first inductance branch unit and the second inductance branch unit, and no longer appears in the form of one inductance. Under the same inductance effect, the sum of the volume structures of the two dispersed inductors is less than the volume structure of one inductor. The inductance volume structure is reduced, and the space occupied by the inductance in the hydrogen production power supply can be reduced, thereby reducing the volume of the hydrogen production power supply, which is more convenient for the design and installation of the hydrogen production power supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0010] Figure 1 It is a structural schematic diagram of a hydrogen production power supply in the prior art;
[0011] Figure 2 A schematic diagram of the structure of a hydrogen production power supply provided in one embodiment of the present application;
[0012] Figure 3 A schematic diagram of the structure of a hydrogen production power supply provided in another embodiment of the present application;
[0013] Figure 4 A schematic diagram of the structure of a hydrogen production power supply provided in another embodiment of the present application;
[0014] Figure 5 A schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application;
[0015] Figure 6 A schematic diagram of the structure of a wind turbine generator set provided in another embodiment of the present application;
[0016] Figure 7 A schematic structural diagram of a wind turbine generator set provided in yet another embodiment of the present application;
[0017] Figure 8A schematic diagram of the structure of an example of an energy storage module provided in an embodiment of the present application;
[0018] Fig. 9 A schematic diagram of another example of an energy storage module provided in an embodiment of the present application;
[0019] Fig.10 A schematic structural diagram of another example of an energy storage module provided in an embodiment of the present application;
[0020] Fig.11 A schematic structural diagram of another example of an energy storage module provided in an embodiment of the present application;
[0021] Fig.12 A schematic diagram of the structure of a hydrogen production system provided in one embodiment of the present application;
[0022] Fig.13 A schematic diagram of the structure of a hydrogen production system provided in another embodiment of the present application;
[0023] Fig.14 A schematic diagram of the structure of a hydrogen production system provided in another embodiment of the present application;
[0024] Fig.15 A schematic diagram of an example of a management subsystem in a hydrogen production system provided in an embodiment of the present application;
[0025] Fig.16 A schematic diagram of the structure of a controller provided in one embodiment of the present application. DETAILED DESCRIPTION
[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.
[0027] As society continues to develop, the demand for energy is gradually increasing. In order to meet the demand for energy, renewable energy has become a key research direction. Wind power generation is one of the important development directions of renewable energy and can be applied in many fields. For example, wind power generation can be used to produce hydrogen, but the hydrogen production equipment needs to be equipped with a hydrogen production power supply, which can convert the received electrical energy into electrical energy that is compatible with the hydrogen production equipment and provide it to the hydrogen production equipment. Figure 1 FIG. 1 is a schematic diagram of a hydrogen production power supply in the prior art. Figure 1As shown, the hydrogen production power supply includes an AC filter 11, a rectifier 12 and a chopper 13, and the chopper 13 includes a switch tube 131, a switch tube 132 and an inductor 133. One end of the inductor 133 is connected to the switch tube 131 and the switch tube 132, and the other end of the inductor is used to connect to the hydrogen production equipment, and the end of the switch tube 132 not connected to the switch tube 131 is used to connect to the hydrogen production equipment. Due to the requirements of hydrogen production on the purity of hydrogen, the hydrogen production power supply needs to output a low-ripple DC current, and the current accuracy requirements for the DC current are relatively high, which requires a larger inductance in the chopper 13. Correspondingly, the volume structure of the inductor 133 will increase, which is not convenient for design and installation.
[0028] The present application provides a hydrogen production power supply, a wind turbine generator set and a hydrogen production system. The hydrogen production power supply includes a rectifier module and a DC chopper. The DC chopper includes a switch unit and two inductance branch units. The switch unit can control whether the current output by the rectifier module can enter the DC chopper. The two inductance branch units are staggered and connected, and each inductance branch unit includes an inductor and a freewheeling diode. When the switch unit is turned on or off, the DC chopper can output DC power. The inductance in the hydrogen production power supply is dispersed into two inductance branch units and no longer appears in the form of one inductance. Under the same inductance effect, the sum of the volume structures of the two dispersed inductors is less than the volume structure of one inductor. The volume structure of the inductor is reduced, which can reduce the space occupied by the inductor in the hydrogen production power supply, making it easier to design and install the hydrogen production power supply.
[0029] The hydrogen production power supply, wind turbine generator set and hydrogen production system provided in this application are described below respectively.
[0030] A first aspect of the present application provides a hydrogen production power source. Figure 2 A schematic diagram of the structure of a hydrogen production power supply provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the hydrogen production power supply 20 includes a rectifier module 21 and a DC chopper 22 .
[0031] The rectifier module 21 is used to convert AC power into DC power. In a scenario where the hydrogen production power source is electrically connected to a device that can generate AC power, the AC connection end of the rectifier module 21 is electrically connected to the device that generates AC power, and the DC connection end of the rectifier module 21 is electrically connected to the DC chopper 22. Specifically, the AC connection end of the rectifier module may include a three-phase connection end, and the DC connection end of the rectifier module 21 may include a first output end and a second output end.
[0032] The DC chopper 22 includes a switch unit 221, a first inductance branch unit 222, and a second inductance branch unit 223. The first end of the switch unit 221 is electrically connected to the first output end of the rectifier module 21, the second end of the switch unit 221 is electrically connected to the first inductance branch unit 222, the first inductance branch unit 222 is electrically connected to the second inductance branch unit 223, and the second inductance branch unit 223 is electrically connected to the second output end of the rectifier module 21.
[0033] The first inductance branch unit 222 and the second inductance branch unit 223 each include an inductor. The inductance in the first inductance branch unit 222 and the inductance in the second inductance branch unit 223 enable the ripple current and current accuracy of the DC power output by the hydrogen production power supply 20 to meet the requirements of the hydrogen production equipment electrically connected to the output of the hydrogen production power supply 20. The purity of the hydrogen produced by the hydrogen production equipment is closely related to the current accuracy of the DC power used for hydrogen production. In order to ensure the purity of the produced hydrogen, the hydrogen production equipment has high requirements for the current accuracy of the DC power output by the hydrogen production power supply, that is, the hydrogen production equipment requires a smaller value of the current accuracy of the DC power required for hydrogen production. The ripple current of the DC power output by the DC chopper 22 is less than the ripple current of the DC power output by the rectifier module 21, that is, the DC chopper 22 can reduce the ripple current of the DC power, thereby reducing the value of the current accuracy of the output DC power, so that the output DC power meets the needs of the hydrogen production equipment. And on the basis that the ripple current and current accuracy of the DC power output by the hydrogen production power supply 20 meet the requirements of the hydrogen production equipment, the inductance in the DC chopper 22 is dispersed in the first inductance branch unit 222 and the second inductance branch unit 223, and the sum of the volume structure after the inductance is dispersed is smaller than the volume structure implemented as one inductance.
[0034] In the embodiment of the present application, the hydrogen production power supply 20 includes a rectifier module 21 and a DC chopper 22, and the DC chopper 22 includes a switch unit 221, a first inductance branch unit 222, and a second inductance branch unit 223. The switch unit 221 can control whether the current output by the rectifier module 21 can enter the DC chopper 22. The first inductance branch unit 222 and the second inductance branch unit 223 are staggered, and the first inductance branch unit 222 and the second inductance branch unit 223 each include an inductor. The inductance in the hydrogen production power supply 20 is dispersed into the first inductance branch unit 222 and the second inductance branch unit 223, and no longer appears in the form of one inductance. Under the same inductance effect, the sum of the volume structures of the two dispersed inductors is less than the volume structure of one inductor, and the inductance volume structure is reduced, which can reduce the space occupied by the inductance in the hydrogen production power supply 20, thereby reducing the volume of the hydrogen production power supply 20, and facilitating the design and installation of the hydrogen production power supply 20.
[0035] In some embodiments, the rectifier module 21 may include a first AC filter, a rectifier and a first capacitor group. The first capacitor group may include one or more capacitors, which are not limited here. The first AC filter is electrically connected to the AC input terminal of the rectifier, and the first capacitor group is connected in parallel with the rectifier. The first output terminal of the rectifier module 21 includes a first DC output terminal of the rectifier and one end of the first capacitor group, and the second output terminal of the rectifier module 21 includes a second DC output terminal of the rectifier and the other end of the first capacitor group. Figure 3 This is a schematic diagram of the structure of a hydrogen production power supply provided in another embodiment of the present application. Figure 4 This is a schematic diagram of the structure of a hydrogen production power supply provided in another embodiment of the present application. Figure 3 The structure of the rectifier module 21 of the hydrogen production power source 20 is Figure 4 The structure of the rectifier module 21 of the hydrogen production power source 20 is different.
[0036] like Figure 3As shown, the rectifier module 21 includes a first AC filter 211, a rectifier 212 and a first capacitor group 213. The first AC filter 211 in the rectifier 21 can be implemented as an inductor L1, an inductor L2 and an inductor L3. The input end of the hydrogen production power supply may include one end of the inductor L1, one end of the inductor L2 and one end of the inductor L3. The rectifier 212 can be implemented as a two-level rectification structure, including a three-phase bridge arm. The first phase bridge arm includes a switch tube T1 and a switch tube T2 connected in series, the second phase bridge arm includes a switch tube T3 and a switch tube T4 connected in series, and the third phase bridge arm includes a switch tube T5 and a switch tube T6 connected in series. The first end of the switch tube T1, the first end of the switch tube T3, and the first end of the switch tube T5 are electrically connected, the second end of the switch tube T2, the second end of the switch tube T4, and the second end of the switch tube T6 are electrically connected, the second end of the switch tube T1 is electrically connected to the first end of the switch tube T2, the second end of the switch tube T3 is electrically connected to the first end of the switch tube T4, and the second end of the switch tube T5 is electrically connected to the first end of the switch tube T6. The AC input end of the rectifier 212 may include a first phase input end, a second phase input end, and a third phase input end. The first phase input end of the rectifier 212 may include the second end of the switch tube T1 and the first end of the switch tube T2, the second phase input end of the rectifier 212 may include the second end of the switch tube T3 and the first end of the switch tube T4, and the third phase input end of the rectifier 212 may include the second end of the switch tube T5 and the first end of the switch tube T6. The other end of the inductor L1 is electrically connected to the second end of the switch tube T1 and the first end of the switch tube T2, the other end of the inductor L2 is electrically connected to the second end of the switch tube T3 and the first end of the switch tube T4, and the other end of the inductor L3 is electrically connected to the second end of the switch tube T5 and the first end of the switch tube T6. The first DC output end of the rectifier 212 includes the first end of the switch tube T1, the first end of the switch tube T3, and the first end of the switch tube T5, and the second DC output end of the rectifier 212 includes the second end of the switch tube T2, the second end of the switch tube T4, and the second end of the switch tube T6. The first capacitor group 213 can be implemented as a capacitor C1, and the capacitor C1 is connected in parallel with the rectifier 212.
[0037] like Figure 4As shown, the rectifier module 21 includes a first AC filter 211, a rectifier 212 and a first capacitor group 213. The specific description of the first AC filter 211 in the rectifier 21 can refer to the above embodiment, which will not be repeated here. The rectifier 212 can be implemented as a three-level rectifier structure, including a three-phase bridge arm. The first phase bridge arm includes a series of switch tubes T7, switch tubes T8, switch tubes T9 and switch tubes T10, and a series of diodes D1 and D2; the second phase bridge arm includes a series of switch tubes T11, switch tubes T12, switch tubes T13 and switch tubes T14, and a series of diodes D3 and D4; the first phase bridge arm includes a series of switch tubes T15, switch tubes T16, switch tubes T17 and switch tubes T18, and a series of diodes D5 and D6. The series-connected diodes D1 and D2 are connected in parallel with the series-connected switch tubes T8 and T9, the series-connected diodes D3 and D4 are connected in parallel with the series-connected switch tubes T12 and T13, the series-connected diodes D5 and D6 are connected in parallel with the series-connected switch tubes T16 and T17. The first end of the switch tube T7, the first end of the switch tube T11, and the first end of the switch tube T15 are electrically connected, and the second end of the switch tube T10, the second end of the switch tube T14, and the second end of the switch tube T18 are electrically connected.
[0038] The AC input end of the rectifier 212 may include a first phase input end, a second phase input end, and a third phase input end. The first phase input end of the rectifier 212 may include the second end of the switch tube T8 and the first end of the switch tube T9. The second phase input end of the rectifier 212 may include the second end of the switch tube T12 and the first end of the switch tube T13. The third phase input end of the rectifier 212 may include the second end of the switch tube T16 and the first end of the switch tube T17. The other end of the inductor L1 is electrically connected to the second end of the switch tube T8 and the first end of the switch tube T9. The other end of the inductor L2 is electrically connected to the second end of the switch tube T12 and the first end of the switch tube T13. The other end of the inductor L3 is electrically connected to the second end of the switch tube T16 and the first end of the switch tube T17. The first DC output end of the rectifier 212 includes the first end of the switch tube T7, the first end of the switch tube T11, and the first end of the switch tube T15. The second DC output end of the rectifier 212 includes the second end of the switch tube T10, the second end of the switch tube T14, and the second end of the switch tube T18. The first capacitor group 213 can be implemented as a capacitor C1, and the capacitor C1 is connected in parallel with the rectifier 212. The first capacitor group 213 can be implemented as a capacitor C2 and a capacitor C3 connected in series, one end of the capacitor C2 is electrically connected to the first DC end of the rectifier 212, the other end of the capacitor C2, one end of the capacitor C3, the anode of the diode D1, the cathode of the diode D2, the anode of the diode D3, the cathode of the diode D4, the anode of the diode D5, and the cathode of the diode D6 are electrically connected, and the other end of the capacitor C3 is electrically connected to the second DC end of the rectifier 212.
[0039] In some embodiments, the first inductor branch unit 222 may include a first inductor and a first freewheeling diode connected in series. The second inductor branch unit 223 may include a second freewheeling diode and a second inductor connected in series. That is, the first inductor branch unit 222 and the second inductor branch unit 223 both include an inductor and a freewheeling diode. In some examples, the specification parameters such as the inductance value of the first inductor are the same as the specification parameters such as the inductance value of the second inductor, and the specification parameters of the first freewheeling diode are the same as the specification parameters of the second freewheeling diode. The connection relationship between the first inductor and the first freewheeling diode in the first inductor branch unit 222 may be different from the connection relationship between the second inductor and the second freewheeling diode in the second inductor DC unit 223.
[0040] When the switch unit 221 is turned on, the DC chopper outputs DC power and charges the first inductor and the second inductor. When the switch unit 221 is turned on, the DC power output by the rectifier module 21 can enter the DC chopper 22, and be processed by the DC chopper 22 before being output. The DC power output by the rectifier module 21 can also charge the first inductor and the second inductor in the process of entering the DC chopper 22.
[0041] When the switch unit 221 is turned off, the first inductor and the second inductor are discharged and the DC chopper outputs DC power. When the switch unit 221 is turned off, the DC power output by the rectifier module 21 will not enter the DC chopper 22, and the first inductor and the second inductor in the DC chopper 22 will be discharged, thereby providing the DC power output by the DC chopper 22.
[0042] In some examples, the DC chopper 22 may have an output end, and the output end of the DC chopper 22 may include a first output end and a second output end. The first output end of the DC chopper 22 may include one end of the first inductor and the cathode of the second freewheeling diode, and the second output end of the DC chopper 22 includes one end of the second inductor and the anode of the first freewheeling diode. The other end of the first inductor is electrically connected to the second end of the switch unit 221 and the cathode of the first freewheeling diode, the anode of the first freewheeling diode is electrically connected to one end of the second inductor, the other end of the second inductor is electrically connected to the second output end of the rectifier module 21 and the anode of the second freewheeling diode, and the cathode of the second freewheeling diode is electrically connected to one end of the first inductor. The switch unit 221 may include a first switch tube, the first end of the switch unit includes the first end of the first switch tube, and the second end of the switch unit includes the second end of the first switch tube.
[0043] like Figure 3 and Figure 4As shown, the first inductor in the DC chopper 22 can be implemented as an inductor L4, the first freewheeling diode can be implemented as a diode D7, the second inductor can be implemented as an inductor L5, the second freewheeling diode can be implemented as a diode D8, and the first switch tube in the switch unit 221 can be implemented as a switch tube T19. The first end of the switch tube T19 is electrically connected to the first output end of the rectifier module 21, and the second end of the switch tube T19 is electrically connected to the other end of the inductor L4 and the cathode of the diode D7. One end of the inductor L4 is electrically connected to the cathode of the diode D8. The anode of the diode D8 is electrically connected to the other end of the inductor L5 and the second output end of the rectifier module 21. One end of the inductor L5 is electrically connected to the anode of the diode D7. The first output end of the DC chopper 22 includes one end of the inductor L4 and the cathode of the diode D8, and the second output end of the DC chopper 22 includes one end of the inductor L5 and the anode of the diode D7.
[0044] When the switch tube T19 is turned on, the diode D7 and the diode D8 are reversely cut off, the inductor L4 and the inductor L5 are connected in series to store energy in the forward direction, and the inductor current of the inductor L4 and the inductor current of the inductor L5 increase. The switch tube T19, the inductor L4, the hydrogen production equipment connected to the first output end and the second output end of the DC chopper 22, the inductor L5, the rectifier 21, and the structure that provides AC current for the input of the rectifier 21 can form a loop, and the DC chopper 22 outputs DC power, and in the process, the inductor L4 and the inductor L5 can be charged.
[0045] When the switch tube T19 is turned off, the diodes D7 and D8 are forward-conducted, the inductors L4 and L5 are reversely discharged in parallel, releasing energy, and the inductor current of the inductor L4 and the inductor current of the inductor L5 decrease, which can be regarded as the inductor L4 and the inductor L5 jointly providing load power. The inductor L4, the hydrogen production equipment connected to the first output end and the second output end of the DC chopper 22, and the diode D7 form a first loop, and the inductor L5, the diode D7, and the hydrogen production equipment connected to the first output end and the second output end of the DC chopper 22 form a second loop.
[0046] By dispersing an inductor in a DC chopper into the inductors in two inductor branch units, on the one hand, the space occupied by the inductance and the inductor volume is reduced, and on the other hand, the ripple current of the current output by the DC chopper is greatly reduced, thereby improving the current accuracy, for example, the current accuracy can be made less than 0.5%, thereby reducing the cost of the hydrogen production power supply.
[0047] An embodiment of the present application provides a wind turbine generator set. Figure 5 A schematic diagram of the structure of a wind turbine generator set provided in an embodiment of the present application is shown in FIG. Figure 5As shown, the wind turbine generator set 30 may include a generator 31 and the hydrogen production power supply 20 in the above embodiment. The input of the rectifier module 21 in the hydrogen production power supply 20 is electrically connected to the output of the generator 31, and the output of the DC chopper 22 in the hydrogen production power supply 20 is configured to be electrically connected to the hydrogen production equipment.
[0048] The output of the hydrogen production power supply 20 is directly electrically connected to the hydrogen production equipment. The hydrogen production power supply 20 converts the AC power output by the generator 31 into DC power suitable for the requirements of the hydrogen production equipment, and directly provides it to the hydrogen production equipment. The electric energy output by the generator 31 no longer needs to pass through the rectifier in the wind power converter, the inverter in the wind power converter, the grid-connected step-up transformer, and the hydrogen production step-down transformer, which reduces the link of power conversion between the generator 31 and the hydrogen production equipment, reduces power loss, and improves power transmission efficiency. The wind power converter in the wind turbine is replaced by the hydrogen production power supply 20, and the output of the wind turbine is changed from AC to DC, which saves the electrical circuit of the wind turbine, reduces the cost of the wind turbine, and is more convenient for the large-scale promotion of green hydrogen production. In addition, the wind turbine in the embodiment of the present application does not need to be connected to the grid, and can be combined with the hydrogen production equipment to form an off-grid hydrogen production system to meet the hydrogen production needs.
[0049] In some embodiments, the wind turbine generator system may further include an energy storage module. Figure 6 A schematic diagram of the structure of a wind turbine generator set provided in another embodiment of the present application is shown in FIG. Figure 7 A structural diagram of a wind turbine generator set provided in another embodiment of the present application is shown in FIG. Figure 6 and Figure 7 As shown, the energy storage module 32 may include an electrically connected converter and a battery unit 322. The converter is electrically connected to the output of the generator, or the converter is electrically connected to the DC bus between the rectifier module 21 and the DC chopper 22. The battery unit 322 may include battery cells connected in series and / or in parallel, and the number and connection relationship of the battery cells in the battery unit 322 are not limited here.
[0050] The energy storage module 32 may include an AC energy storage module or a DC energy storage module.
[0051] In some examples, the energy storage module 32 includes an AC energy storage module, such as Figure 6 As shown, the converter in the AC energy storage module is an AC-DC converter 321, which is electrically connected to the output of the generator 31. The AC-DC converter 321 can convert the AC power generated by the generator into DC power and transmit it to the battery unit 322 for storage. In other examples, the energy storage module 32 includes a DC energy storage module, such as Figure 7As shown, the converter in the DC energy storage module is a DC converter 323, which is electrically connected to the DC bus between the rectifier module 21 and the DC chopper 22. The DC converter 323 can convert the DC power obtained by the rectifier module 21 into DC power that meets the requirements of the battery unit 322, and transmit it to the battery unit 322 for storage.
[0052] In some embodiments, Figure 6 and Figure 7 As shown, the wind turbine generator set may further include a backup power module 33. The backup power module 33 is electrically connected to the output of the generator 31. The backup power module 33 is used to generate electric energy to charge the energy storage module 32 when the electric energy stored in the energy storage module 32 is insufficient to start the wind turbine generator set, so that the energy storage module has sufficient electric energy to start the wind turbine generator set and realize the black start of the wind turbine generator set. In some examples, the backup power module may include a transformer 331 and a power generation unit 332, and the transformer 331 is electrically connected to the power generation unit 332. The power generation unit 332 may generate electric energy when the electric energy stored in the energy storage module 32 is insufficient to start the wind turbine generator set. The type of the power generation unit 332 is not limited here. For example, the power generation unit 332 may be implemented as a diesel generator. The transformer 331 may transform the electric energy generated by the power generation unit 332 so that the electric energy output by the transformer 331 is compatible with the electric energy required by the energy storage module 32.
[0053] When the wind turbine generator set is not connected to the grid, the energy storage module 32 can provide starting energy for the wind turbine generator set to achieve a black start of the wind turbine generator set 20. When the energy storage module 32 does not store enough electric energy, the backup power module 33 can charge the energy storage module 32 so that the energy storage module 32 provides starting energy for the wind turbine generator set, further improving the reliability of the black start of the wind turbine generator set.
[0054] In some embodiments, the converter includes an AC-DC converter 321. The AC-DC converter 321 may include a second AC filter, an AC-DC conversion unit, and a second capacitor group electrically connected in sequence. The second AC filter is electrically connected to the output of the generator 31, and the DC end of the AC-DC conversion unit and the second capacitor group are electrically connected to the battery unit 322. The second capacitor group may include one capacitor or more than two capacitors, which is not limited here.
[0055] In some examples, the AC-to-DC conversion unit 321 may be implemented as a two-level rectification structure. Figure 8 A schematic diagram of an example of a structure of an energy storage module provided in an embodiment of the present application is shown in FIG. Figure 8As shown, the AC-DC converter 321 may include a second AC filter 3211, an AC-DC conversion unit 3212, and a second capacitor group 3213 that are electrically connected in sequence. The structure of the second AC filter 3211, the structure of the AC-DC conversion unit 3212, and the structure and connection relationship of the second capacitor group 3213 can be referred to in the above embodiment. Figure 3 The structure of the first AC filter 211, the structure of the rectifier 212, the structure of the first capacitor group 213 and their connection relationship are not described in detail here.
[0056] In other examples, the AC-DC conversion unit 321 may be implemented as a three-level rectification structure. Fig. 9 A schematic diagram of another example of the structure of the energy storage module provided in the embodiment of the present application is shown in FIG. Fig. 9 As shown, the AC-DC converter 321 may include a second AC filter 3211, an AC-DC conversion unit 3212, and a second capacitor group 3213 that are electrically connected in sequence. The structure of the second AC filter 3211, the structure of the AC-DC conversion unit 3212, and the structure and connection relationship of the second capacitor group 3213 can be referred to in the above embodiment. Figure 4 The structure of the first AC filter 211, the structure of the rectifier 212, the structure of the first capacitor group 213 and their connection relationship are not described in detail here.
[0057] In some embodiments, the converter includes a DC converter 323. The DC converter 323 may include one bidirectional half-bridge buck-boost converter unit or two bidirectional half-bridge buck-boost converter units.
[0058] In some examples, the DC converter 323 may include a third capacitor group, a bidirectional half-bridge buck-boost conversion unit, and a fourth capacitor group that are electrically connected in sequence. Fig.10 A schematic diagram of another example of an energy storage module provided in an embodiment of the present application is shown in FIG. Fig.10 As shown, both ends of the third capacitor group 3231 and the first connection end and the second connection end of the bidirectional half-bridge buck-boost conversion unit 3232 are electrically connected to the DC bus, and the third connection end and the fourth connection end of the bidirectional half-bridge buck-boost conversion unit 3232 and both ends of the fourth capacitor group 3233 are electrically connected to the battery unit 322. The third capacitor group 3231 may include one or more capacitors, and the fourth capacitor group 3233 may include one or more capacitors, which are not limited here.
[0059] The bidirectional half-bridge buck-boost conversion unit 3232 can realize voltage boost and voltage reduction, thereby realizing bidirectional conversion of DC power between the DC bus and the battery unit 322. The battery unit 322 may include cells connected in series and / or in parallel, and the number and connection relationship of the cells in the battery unit 322 are not limited here.
[0060] Specifically, the bidirectional half-bridge buck-boost conversion unit 3232 includes a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a third inductor. The first connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the first end of the second switch tube, the second connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the second end of the third switch tube, and the second end of the second switch tube is electrically connected to the first end of the third switch tube. The third connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the first end of the fourth switch tube, the fourth connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the second end of the fifth switch tube, and the second end of the fourth switch tube is electrically connected to the first end of the fifth switch tube. One end of the third inductor is electrically connected to the second end of the second switch tube and the first end of the third switch tube, and the other end of the third inductor is electrically connected to the second end of the fourth switch tube and the first end of the fifth switch tube.
[0061] like Fig. 9 As shown, the second switch tube, the third switch tube, the fourth switch tube, and the fifth switch tube in the bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as switch tubes T20, T21, T22, and T23, and the third inductor in the bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as inductor L6. The first capacitor group 3231 can be implemented as capacitor C4, and the second capacitor group 3233 can be implemented as capacitor C5. One end of capacitor C4 is electrically connected to the positive bus of the DC bus, and the other end of capacitor C4 is electrically connected to the negative bus of the DC bus. The first end of switch tube T20 is electrically connected to one end of capacitor C4 and the positive bus of the DC bus, and the second end of switch tube T20 is electrically connected to the first end of switch tube T21. The second end of switch tube T21 is electrically connected to the other end of capacitor C4 and the negative bus of the DC bus. The first end of the switch tube T22 is electrically connected to one end of the capacitor C5 and the battery unit 322, and the second end of the switch tube T22 is electrically connected to the first end of the switch tube T23. The second end of the switch tube T23 is electrically connected to the other end of the capacitor C5 and the battery unit 232. One end of the inductor L6 is electrically connected to the second end of the switch tube T20 and the first end of the switch tube T21, and the other end of the inductor L6 is electrically connected to the second end of the switch tube T22 and the first end of the switch tube T23.
[0062] In other examples, the DC converter 323 includes a fifth capacitor group, two bidirectional half-bridge buck-boost conversion units connected in series, and a sixth capacitor group electrically connected in sequence, the fifth capacitor group includes two first capacitor sub-groups connected in series, and the sixth capacitor group includes two second capacitor sub-groups connected in series. Fig.11 A schematic diagram of another example of the structure of the energy storage module provided in the embodiment of the present application is shown in FIG. Fig.11As shown, both ends of the fifth capacitor group 3234 and the first connection end of one of the bidirectional half-bridge buck-boost conversion units 3232, and the second connection end of another of the bidirectional half-bridge buck-boost conversion units 3232 are electrically connected to the DC bus, the third connection end of one of the bidirectional half-bridge buck-boost conversion units 3232, the fourth connection end of another of the bidirectional half-bridge buck-boost conversion units 3232, and both ends of the sixth capacitor group 3235 are electrically connected to the battery unit 322, and one end of the two first capacitor sub-groups connected in series, the second connection end of one of the bidirectional half-bridge buck-boost conversion units 3232, the first connection end of another of the bidirectional half-bridge buck-boost conversion units 3232, the fourth connection end of one of the bidirectional half-bridge buck-boost conversion units 3232, the third connection end of another of the bidirectional half-bridge buck-boost conversion units 3232, and one end of the two second capacitor sub-groups connected in series are electrically connected.
[0063] The two bidirectional half-bridge buck-boost conversion units 3232 connected in series can realize voltage boost and voltage reduction, thereby realizing bidirectional conversion of DC power between the DC bus and the battery unit 232.
[0064] Specifically, each bidirectional half-bridge buck-boost conversion unit 3232 includes a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a third inductor. The first connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the first end of the second switch tube, the second connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the second end of the third switch tube, and the second end of the second switch tube is electrically connected to the first end of the third switch tube. The third connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the first end of the fourth switch tube, the fourth connection end of the bidirectional half-bridge buck-boost conversion unit 3232 includes the second end of the fifth switch tube, and the second end of the fourth switch tube is electrically connected to the first end of the fifth switch tube. One end of the third inductor is electrically connected to the second end of the second switch tube and the first end of the third switch tube, and the other end of the third inductor is electrically connected to the second end of the fourth switch tube and the first end of the fifth switch tube.
[0065] like Fig.11As shown, the second switch tube, the third switch tube, the fourth switch tube, and the fifth switch tube in a bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as switch tubes T24, T25, T26, and T27, and the third inductor in a bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as L7. The second switch tube, the third switch tube, the fourth switch tube, and the fifth switch tube in another bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as switch tubes T28, T29, T30, and T31, and the third inductor in another bidirectional half-bridge buck-boost conversion unit 3232 can be implemented as L8. The two first capacitor subgroups in the fifth capacitor group 3234 are respectively implemented as capacitors C6 and C7. The two second capacitor subgroups in the sixth capacitor group 3235 are respectively implemented as capacitors C8 and C9.
[0066] One end of the capacitor C6 is electrically connected to the first end of the switch tube T24 and the positive busbar of the DC bus, and the other end of the capacitor C25 is electrically connected to one end of the capacitor C26. The first end of the switch tube T24 is electrically connected to one end of the capacitor C6 and the positive busbar of the DC bus, and the second end of the switch tube T24 is electrically connected to the first end of the switch tube T25. The first end of the switch tube T26 is electrically connected to one end of the capacitor C8 and the battery unit 322, and the second end of the switch tube T26 is electrically connected to the first end of the switch tube T27. The first end of the capacitor C27 is electrically connected to the first end of the switch tube T26 and the battery unit 322. One end of the inductor L7 is electrically connected to the second end of the switch tube T24 and the first end of the switch tube T25, and the other end of the inductor L7 is electrically connected to the second end of the switch tube T26 and the first end of the switch tube T27. The other end of capacitor C6, one end of capacitor C7, the second end of switch tube T25, the first end of switch tube T28, the second end of switch tube T27, the first end of switch tube T30, the other end of capacitor C8 and one end of capacitor C9 are electrically connected. The second end of switch tube T28 is electrically connected to the first end of switch tube T29, and the second end of switch tube T29 is electrically connected to the other end of capacitor C7 and the negative bus of the DC bus. The second end of switch tube T30 is electrically connected to the first end of switch tube T31, and the second end of switch tube T31 is electrically connected to the other end of capacitor C9 and battery unit 232. One end of inductor L8 is electrically connected to the second end of switch tube T28 and the first end of switch tube T29, and the other end of inductor L8 is electrically connected to the second end of switch tube T30 and the first end of switch tube T31.
[0067] The switch tube in the above embodiment may include an insulated gate bipolar transistor (IGBT) or other types of switch tubes, which are not limited here. In some examples, when the switch tube in the above embodiment includes an IGBT, the first end of the switch tube is the collector of the IGBT, and the second end of the switch tube is the emitter of the IGBT.
[0068] A third aspect of the present application provides a hydrogen production system. Fig.12 This is a schematic diagram of the structure of a hydrogen production system provided in one embodiment of the present application. Fig.13 This is a structural schematic diagram of a hydrogen production system provided in another embodiment of the present application. Fig.14 A structural diagram of a hydrogen production system provided in another embodiment of the present application is shown in FIG. Fig.12 , Fig.13 and Fig.14 As shown, the hydrogen production system includes the wind turbine generator set 30 and the hydrogen production equipment 40 in the above embodiment. Fig.13 and Fig.14 The wind turbine generator set 30 shown in the figure also includes an energy storage module 32 and a backup power module 33. Fig.13 The energy storage module 32 in is an AC energy storage module. Fig.14 The energy storage module 32 is a DC energy storage module.
[0069] The hydrogen production equipment 40 is electrically connected to the output of the hydrogen production power supply 20 of the wind turbine generator set 30. The output of the wind turbine generator set 30 includes the output of the hydrogen production power supply 20, and the DC power output of the hydrogen production power supply 20 is directly provided to the hydrogen production equipment 40. The hydrogen production equipment 40 can produce hydrogen using the received DC power.
[0070] In some examples, the hydrogen production device 40 can use direct current power to electrolyze water to produce hydrogen. Figure 7 As shown, the hydrogen production equipment 40 may include a hydrogen production electrolysis device 41 and a hydrogen storage device 42. The hydrogen production electrolysis device 31 may be implemented as an electrolyzer, etc., which is not limited here. The hydrogen storage device 42 may be connected to the hydrogen production electrolysis device 41 through a pipeline, and the hydrogen produced by the hydrogen production electrolysis device 41 may be transmitted to the hydrogen storage device 32 through the pipeline.
[0071] The specific contents of the wind turbine generator set 30 in the hydrogen production system can refer to the relevant descriptions in the above embodiments, and the same technical effects can be achieved. To avoid repetition, they will not be described here.
[0072] In some embodiments, the hydrogen production system may also include a management subsystem. Fig.15 A schematic diagram of an example of a management subsystem in a hydrogen production system provided in an embodiment of the present application, such as Fig.15As shown, the wind farm hydrogen production energy management system 51 can obtain the power generation of the generator obtained by the wind power prediction function 52 and the hydrogen production load demand power of the hydrogen production equipment obtained by the load prediction function 53. The wind farm hydrogen production energy management system 51 can transmit the power generation of the generator and the hydrogen production load demand power of the hydrogen production equipment to the hydrogen production power supply control system 54. The hydrogen production power supply control system 54 can interact with the main control and pitch control system 55, the DC energy storage control system 56 and the backup power control system 57, and control the DC energy storage module through the DC energy storage control system 56, and control the backup power module through the backup power control system 57. The control of the hydrogen production system in the above embodiment can be realized by this control subsystem, and the control subsystem can also be realized as a controller, which is not limited here.
[0073] The present application also provides a control method for a hydrogen production system, which can be applied to the hydrogen production system in the above embodiment, and can be specifically executed by a controller, a control subsystem, etc., which is not limited here. The control method for the hydrogen production system may include steps a1 to a4.
[0074] In step a1, energy storage information of the energy storage module is obtained.
[0075] The energy storage information of the energy storage module may indicate the amount of electricity stored in the energy storage module.
[0076] In step a2, when the energy storage information indicates that the stored power is less than the startup power requirement, the backup power module is controlled to generate power to charge the energy storage module so that the power stored in the energy storage module is greater than or equal to the startup power requirement.
[0077] The starting power requirement is the amount of power required to start the wind turbine. The energy storage information indicates that the stored power is less than the starting power requirement, which means that the power stored in the energy storage module cannot start the wind turbine. In order to enable the energy storage module to provide enough power to start the wind turbine, the backup power module is controlled to generate electric energy, which is directly transmitted to the AC energy storage module or transmitted to the DC energy storage module after conversion by a rectifier to charge the energy storage module. The energy storage information of the energy storage module can be obtained in real time to obtain the amount of power stored in the energy storage module in real time. When the electric energy stored in the energy storage module is greater than or equal to the starting power requirement, the energy storage module is controlled to provide starting power for the wind turbine, thereby starting the wind turbine.
[0078] In step a3, when the energy storage information indicates that the stored power is greater than or equal to the startup power requirement, the energy storage module is controlled to provide startup power for the wind turbine generator set.
[0079] The energy storage information indicates that the stored electricity is greater than or equal to the starting power requirement, which means that the electricity stored in the energy storage module is sufficient to start the wind turbine generator set. The energy storage module can be directly controlled to discharge and provide starting power for the wind turbine generator set.
[0080] In step a4, the wind turbine generator set is controlled to start up to supply power to the hydrogen production equipment.
[0081] The wind turbine generator set can be controlled to start up using the starting power provided by the energy storage module, thereby supplying power to the hydrogen production equipment. The hydrogen production equipment can produce hydrogen using the power output by the wind turbine generator set.
[0082] In the embodiment of the present application, on the basis of the hydrogen production system being an off-grid hydrogen production system, the energy storage module and the backup power module in the wind turbine can be used to collaborate to achieve a black start of the wind turbine and meet the hydrogen production demand.
[0083] In some embodiments, after the wind turbine generator set is started and the hydrogen production equipment is started and preheated, the power mismatch problem between the wind turbine generator set and the hydrogen production equipment can be solved according to the power generation of the generator and the hydrogen production demand of the hydrogen production equipment. Steps a5 to a8 can also be included after the above step a4.
[0084] In step a5, the power information of the generator and the hydrogen production demand information of the hydrogen production equipment are obtained.
[0085] The power information of the generator may indicate the power of the generator. The hydrogen production demand information of the hydrogen production equipment may indicate the hydrogen production demand of the hydrogen production equipment, and the hydrogen production demand may comprehensively consider the comprehensive demand for hydrogen production, hydrogen transportation and hydrogen use, that is, the hydrogen production demand information may include hydrogen production information, hydrogen transportation information and hydrogen use information.
[0086] In step a6, the power generation of the generator and the power demand of the hydrogen production load of the hydrogen production equipment are determined according to the power information and the hydrogen production demand information.
[0087] The power generation of the generator can be estimated based on the power information. The hydrogen production demand of the hydrogen production equipment can be estimated based on the hydrogen production demand information, so as to determine the hydrogen production load power demand based on the hydrogen production demand, and the hydrogen production load power demand includes the power required to produce the hydrogen required for hydrogen production.
[0088] In step a7, when the power generation is greater than the power demand of the hydrogen production load, at least part of the power output by the generator is used to charge the energy storage module.
[0089] The amount of electricity generated is greater than the amount of electricity required by the hydrogen production load, indicating that the amount of electricity generated by the generator is more than enough to meet the hydrogen production demand, and the energy storage module can be charged. Specifically, if the energy storage module includes an AC energy storage module, at least part of the AC power output by the generator can be input into the AC energy storage module to charge the AC energy storage module; if the energy storage module includes a DC energy storage module, the AC power output by the generator can be converted into DC power by a rectifier in the hydrogen production power supply, and at least part of the DC power can be input into the DC energy storage module to charge the DC energy storage module.
[0090] In step a8, when the power generation is less than the power demand of the hydrogen production load, the energy storage module is controlled to discharge so as to supply power to the hydrogen production equipment through the hydrogen production power supply.
[0091] The power generation is less than the power demand of the hydrogen production load, which means that the power generation of the generator does not meet the hydrogen production demand of the hydrogen production equipment, and the energy storage module can be controlled to discharge. If the energy storage module includes an AC energy storage module, the AC power output by the AC energy storage module can be converted into DC power that meets the requirements of the hydrogen production equipment through the hydrogen production power supply, and the hydrogen production equipment is powered to meet the hydrogen production demand of the hydrogen production equipment. If the energy storage module includes a DC energy storage module, the DC power output by the DC energy storage module is transmitted to the DC bus between the rectifier and the DC chopper in the hydrogen production power supply, and is converted into DC power that meets the requirements of the hydrogen production equipment through the DC chopper, and the hydrogen production equipment is powered to meet the hydrogen production demand of the hydrogen production equipment.
[0092] The embodiment of the present application also provides a controller. Fig.16 A schematic diagram of the structure of a controller provided in an embodiment of the present application is shown in FIG. Fig.16 As shown, the controller 600 includes a memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .
[0093] In some examples, the processor 602 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.
[0094] The memory 601 may include a read-only memory (ROM), a random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Therefore, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the control method of the hydrogen production system in the embodiment of the present application.
[0095] The processor 602 runs a computer program corresponding to the executable program code by reading the executable program code stored in the memory 601 , so as to implement the control method of the hydrogen production system in the above embodiment.
[0096] In some examples, the controller 600 may further include a communication interface 603 and a bus 604. Fig.16As shown, the memory 601, the processor 602, and the communication interface 603 are connected via a bus 604 and communicate with each other.
[0097] The communication interface 603 is mainly used to realize the communication between the modules, devices, units and / or equipment in the embodiment of the present application. The communication interface 603 can also be used to access input devices and / or output devices.
[0098] The bus 604 includes hardware, software, or both, coupling the components of the controller 600 to each other. By way of example and not limitation, the bus 604 may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a Memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-E) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses or a combination of two or more of the above. Where appropriate, the bus 604 may include one or more buses. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.
[0099] The embodiment of the present application may also provide a computer-readable storage medium, on which a computer program instruction is stored, and when the computer program instruction is executed by the processor, the control method of the hydrogen production system in the above embodiment can be implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the above-mentioned computer-readable storage medium may include a non-transitory computer-readable storage medium, such as a read-only memory (Read-Only Memory, referred to as ROM), a random access memory (Random Access Memory, referred to as RAM), a disk or an optical disk, etc., which is not limited here.
[0100] The embodiments of the present application may also provide a computer program product. When the instructions in the computer program product are executed by the processor of an electronic device, the electronic device executes the control method of the hydrogen production system in the above embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0101] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. For wind turbine embodiments, hydrogen production system embodiments, method embodiments, computer-readable storage medium embodiments, and computer program product embodiments, the relevant parts can refer to the description part of the hydrogen production power supply embodiment. The present application is not limited to the specific steps and structures described above and shown in the figures. Those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application. In addition, for the sake of brevity, a detailed description of known technologies is omitted here.
[0102] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.
[0103] Those skilled in the art should understand that the above embodiments are exemplary rather than restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on the study of the drawings, the specification and the claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other devices or steps; the quantifier "one" does not exclude multiple; the terms "first" and "second" are used to indicate names rather than to indicate any specific order. Any figure marks in the claims should not be understood as limiting the scope of protection. The functions of multiple parts appearing in the claims can be implemented by a single hardware or software module. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.
Claims
1. A hydrogen production power source, characterized in that: include: Rectifier module; A DC chopper, comprising a switch unit, a first inductance branch unit and a second inductance branch unit, wherein the first end of the switch unit is electrically connected to the first output end of the rectifier module, the second end of the switch unit is electrically connected to the first inductance branch unit, the first inductance branch unit is electrically connected to the second inductance branch unit, and the second inductance branch unit is electrically connected to the second output end of the rectifier module; The first inductor branch unit and the second inductor branch unit each include an inductor, and the ripple current of the DC power output by the DC chopper is smaller than the ripple current of the DC power output by the rectifier module.
2. The hydrogen production power supply according to claim 1, characterized in that: The first inductor branch unit includes a first inductor and a first freewheeling diode connected in series, and the second inductor branch unit includes a second freewheeling diode and a second inductor connected in series. Wherein, when the switch unit is turned on, the DC chopper outputs DC power and charges the first inductor and the second inductor, and when the switch unit is turned off, the first inductor and the second inductor discharge and the DC chopper outputs DC power.
3. The hydrogen production power supply according to claim 2, characterized in that: The first output end of the DC chopper includes one end of the first inductor and the cathode of the second freewheeling diode, and the second output end of the DC chopper includes one end of the second inductor and the anode of the first freewheeling diode. The other end of the first inductor is electrically connected to the second end of the switch unit and the cathode of the first freewheeling diode, the anode of the first freewheeling diode is electrically connected to one end of the second inductor, the other end of the second inductor is electrically connected to the second output end of the rectifier module and the anode of the second freewheeling diode, and the cathode of the second freewheeling diode is electrically connected to one end of the first inductor.
4. The hydrogen production power supply according to claim 1, characterized in that: The rectifier module includes a first AC filter, a rectifier and a first capacitor group; The first AC filter is electrically connected to the AC input terminal of the rectifier, and the first capacitor group is connected in parallel with the rectifier; The first output end of the rectifier module includes the first DC output end of the rectifier and one end of the first capacitor group, and the second output end of the rectifier module includes the second DC output end of the rectifier and the other end of the first capacitor group.
5. The hydrogen production power source according to claim 1, characterized in that: The switch unit includes a first switch tube, the first end of the switch unit includes the first end of the first switch tube, and the second end of the switch unit includes the second end of the first switch tube.
6. A wind turbine generator set, characterized in that: include: dynamo; The hydrogen-producing power supply according to any one of claims 1 to 5, wherein the input of the rectifier module in the hydrogen-producing power supply is electrically connected to the output of the generator, and the output of the DC chopper in the hydrogen-producing power supply is configured to be electrically connected to the hydrogen-producing equipment.
7. The wind turbine generator set according to claim 6, characterized in that: Also includes: The energy storage module comprises an electrically connected converter and a battery unit, wherein the converter is electrically connected to the output of the generator, or the converter is electrically connected to a DC bus between the rectifier module and the DC chopper.
8. The wind turbine generator set according to claim 7, characterized in that: Also includes; The backup power module is electrically connected to the output of the generator and is used to generate electric energy to charge the energy storage module when the electric energy stored in the energy storage module is insufficient to start the wind turbine generator set.
9. The wind turbine generator set according to claim 7, characterized in that: Where the converter comprises an AC-DC converter, the AC-DC converter is electrically connected to the output of the generator; In the case where the converter comprises a DC converter, the DC converter is electrically connected to a DC bus between the rectifier module and the DC chopper.
10. The wind turbine generator set according to claim 9, characterized in that: The AC-DC converter comprises a second AC filter, an AC-DC conversion unit and a second capacitor group which are electrically connected in sequence; The second AC filter is electrically connected to the output of the generator, and the DC end of the AC-DC conversion unit and the second capacitor group are electrically connected to the battery unit.
11. The wind turbine generator set according to claim 9, characterized in that: The DC converter comprises a third capacitor group, a bidirectional half-bridge buck-boost conversion unit and a fourth capacitor group which are electrically connected in sequence; The two ends of the third capacitor group and the first connection end and the second connection end of the bidirectional half-bridge buck-boost conversion unit are electrically connected to the DC bus, and the third connection end, the fourth connection end of the bidirectional half-bridge buck-boost conversion unit and the two ends of the fourth capacitor group are electrically connected to the battery unit.
12. The wind turbine generator set according to claim 9, characterized in that: The DC converter comprises a fifth capacitor group, two bidirectional half-bridge buck-boost conversion units connected in series, and a sixth capacitor group, which are electrically connected in sequence. The fifth capacitor group comprises two first capacitor subgroups connected in series, and the sixth capacitor group comprises two second capacitor subgroups connected in series. The two ends of the fifth capacitor group and the first connection end of one of the bidirectional half-bridge buck-boost conversion units, and the second connection end of another of the bidirectional half-bridge buck-boost conversion units are electrically connected to the DC bus, the third connection end of one of the bidirectional half-bridge buck-boost conversion units, the fourth connection end of another of the bidirectional half-bridge buck-boost conversion units, and the two ends of the sixth capacitor group are electrically connected to the battery unit, and one end of the two first capacitor sub-groups connected in series, the second connection end of one of the bidirectional half-bridge buck-boost conversion units, the first connection end of another of the bidirectional half-bridge buck-boost conversion units, the fourth connection end of one of the bidirectional half-bridge buck-boost conversion units, the third connection end of another of the bidirectional half-bridge buck-boost conversion units, and one end of the two second capacitor sub-groups connected in series are electrically connected.
13. A hydrogen production system, characterized in that: include: A wind turbine generator set as claimed in any one of claims 6 to 12; A hydrogen production device is electrically connected to the output of the DC chopper in the hydrogen production power supply of the wind turbine generator set.