Wind power converter

Abstract

The present disclosure provides a wind power converter, comprising a power cabinet having a first containing space, wherein the power cabinet comprises a partition plate and a back plate; the partition plate divides the first containing space into a power module space and a reactance module space; the power cabinet further comprises a first fan and a second fan; the first fan is provided on the partition plate and generates airflow along the direction from the power module space to the reactance module space; the second fan is provided at the position of the back plate corresponding to the reactance module space; the second fan comprises a support frame connected to the back plate and a fan body mounted on the support frame; and the included angle between the air outlet direction of the second fan and the air outlet direction of the first fan is an acute angle.

Description

Wind power converter

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number CN 202410006386.0, filed on January 2, 2024, entitled “Wind Power Converter,” and the entire contents of the above application are incorporated herein by reference. Technical Field

[0003] The present disclosure belongs to the technical field of wind power generation equipment, and particularly relates to a wind power converter. Background Art

[0004] For wind turbine generator sets, wind power converter is one of the core components. Traditional wind power converters are usually composed of grid-connected cabinets, control cabinets, and power cabinets. The three cabinets use independent air ducts to discharge the hot air in their respective cabinets to the cabin of the wind turbine generator set. When the power of the wind power converter is relatively low, this setting will not have a significant impact on the temperature in the cabin. However, as the power of the wind power converter gradually increases, this heat dissipation method will cause the temperature in the cabin to rise sharply, resulting in a decrease in the heat dissipation effect. At the same time, the internal components of the wind power converter in related technologies are arranged in a disorderly manner, which makes the air ducts on the back of each cabinet easily obstructed, thereby affecting the circulation of cooling air in the cabinet, and further affecting the heat dissipation of the power electronic equipment in the cabinet, and ultimately affecting the operation of the power electronic equipment, and posing certain safety hazards.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the present disclosure is to provide a wind power converter with smoother internal air ducts, better cooling and heat dissipation effects of power electronic equipment, and better safety and reliability.

[0007] In a first aspect, an embodiment of the present disclosure provides a wind power converter, comprising a power cabinet having a first accommodation space, the power cabinet comprising a partition and a back plate, the partition separating the first accommodation space into a power module space and a reactance module space, the power cabinet further comprising a first fan and a second fan, the first fan being arranged on the partition and generating an airflow in a direction from the power module space to the reactance module space, the second fan being arranged on a position on the back plate corresponding to the reactance module space; the second fan comprising a support frame connected to the back plate and a body mounted on the support frame, the angle between the air outlet direction of the second fan and the air outlet direction of the first fan being an acute angle.

[0008] According to an embodiment of the first aspect of the present disclosure, the support frame includes a mounting plate and two connecting plates, the two connecting plates are arranged at both ends of the mounting plate in the length direction, and the mounting plate is connected to the back plate through the two connecting plates; the distance between the end of the mounting plate close to the power module space and the back plate is greater than the distance between the end of the mounting plate away from the power module space and the back plate, and the body is installed on the mounting plate.

[0009] According to an embodiment of the first aspect of the present disclosure, the power cabinet further includes a second partition spaced apart from the partition, the partition and the second partition form a sandwich structure, the air inlet of the first fan is arranged on the side of the partition close to the power module space, and the air outlet of the first fan is arranged on the side of the second partition close to the reactance module space.

[0010] According to an embodiment of the first aspect of the present disclosure, there are multiple bodies, and the multiple bodies are arranged in sequence and spaced apart along the length direction of the mounting plate.

[0011] According to an embodiment of the first aspect of the present disclosure, the back plate includes a plate body and a first air outlet guide frame, and the first air outlet is provided in the area of ​​the plate body corresponding to the reactance module space. The first air outlet guide frame is connected to the plate body and is provided on the periphery of the first air outlet away from the reactance module space, and two connecting plates are connected to the first air outlet guide frame.

[0012] According to an embodiment of the first aspect of the present disclosure, a tarpaulin is provided at a section of the first air outlet guide frame away from the reactance module space, wherein the tarpaulin is a structure with two ends open, one end of which is sleeved on the first air outlet guide frame, and the other end is connected to the air outlet of the cabin.

[0013] According to an embodiment of the first aspect of the present disclosure, the first air outlet guide frame is a structure with openings at both ends, one end of the first air outlet guide frame is open and connected to the first air outlet, and the other end of the first air outlet guide frame is used to cover a tarpaulin or directly connect to the air outlet of the cabin.

[0014] According to an embodiment of the first aspect of the present disclosure, the first air outlet guide frame includes a plurality of straight plates and at least one inclined plate, and the plurality of straight plates and the at least one inclined plate are connected end to end to form a ring structure, the plane where the straight plates are located is perpendicular to the plate body, and adjacent straight plates and the straight plates and the inclined plates are detachably connected; there is an angle between the plane where the inclined plates are located and the plane where the plate body is located, and the orthographic projection of the inclined plates onto the plate body does not overlap with the air outlet.

[0015] According to an embodiment of the first aspect of the present disclosure, the angle between the plane where the inclined plate is located and the plane where the plate body is located is the same as the angle between the plane where the mounting plate is located and the plane where the plate body is located.

[0016] According to an embodiment of the first aspect of the present disclosure, the number of the inclined plates is two.

[0017] According to an embodiment of the first aspect of the present disclosure, the inclined plate is a plate structure in the first tuyere guide frame that is away from the power module space.

[0018] According to an embodiment of the first aspect of the present disclosure, the wind power converter further includes a grid-connected cabinet having a second accommodating space and a control cabinet having a third accommodating space, and a connecting hole is provided at one end of the grid-connected cabinet and the control cabinet, and the second accommodating space and the third accommodating space are connected through the connecting hole; a second air outlet is provided at one end of the grid-connected cabinet close to the connecting hole, and a plurality of first air inlets are provided at the other end of the grid-connected cabinet, a second air inlet is provided at one end of the control cabinet close to the first air inlet, a third fan for generating airflow along the control cabinet toward the grid-connected cabinet is provided at the connecting hole, and a fourth fan for generating airflow outward is provided at the second air outlet.

[0019] According to an embodiment of the first aspect of the present disclosure, the number of the plurality of first air inlets is 6 to 12.

[0020] According to an embodiment of the first aspect of the present disclosure, the power cabinet includes a vacuum contactor and a grid-side circuit breaker, the vacuum contactor and the grid-side circuit breaker are connected by a copper busbar, and the setting direction of the copper busbar is parallel to the direction of airflow generated by the fourth fan in the power cabinet.

[0021] According to an embodiment of the first aspect of the present disclosure, a second air outlet guide frame having the same structure and function as the first air outlet guide frame is provided at the second air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] FIG1 is a front view of a wind power converter provided by an embodiment of the first aspect of the present disclosure;

[0024] FIG2 is a rear view of a wind power converter provided by an embodiment of the first aspect of the present disclosure;

[0025] FIG3 is a left side view of the wind power converter provided by the embodiment of the first aspect of the present disclosure;

[0026] FIG4 is a top view of a wind power converter provided by an embodiment of the first aspect of the present disclosure;

[0027] FIG5 is a schematic structural diagram of a support frame in a wind power converter provided by an embodiment of the first aspect of the present disclosure;

[0028] FIG6 is a schematic structural diagram of a power cabinet in a wind power converter provided by an embodiment of the first aspect of the present disclosure;

[0029] FIG7 is a schematic structural diagram of a grid-connected cabinet in a wind power converter provided by an embodiment of the first aspect of the present disclosure.

[0030] In the figure, 100, wind power converter; 10, power cabinet; 11, partition; 12, back plate; 121, plate body; 1211, first air outlet; 122, first air outlet guide frame; 1221, straight plate; 1222, inclined plate; 13, first fan; 14, second fan; 141, support frame; 1411, mounting plate; 1412, connecting plate; 142, machine body; 15, second partition; 101, first accommodating space; 1011, power module space; 1012, reactance module space; 20, grid-connected cabinet; 201, second accommodating space; 21, second air outlet; 22, first air inlet; 23, third fan; 24, fourth fan; 25, vacuum contactor; 26, grid-side circuit breaker; 27, copper busbar; 30, control cabinet; 301, third accommodating space; 31, second air inlet. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. The terms used in the specification and disclosure of this disclosure are for the purpose of describing specific embodiments only and are not intended to limit this disclosure. The terms "including" and "having" and any variations thereof in the specification and claims of this disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this disclosure or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0033] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0034] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0035] The term "and / or" in this disclosure simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " in this disclosure generally indicates that the related objects are in an "or" relationship.

[0036] The term "multiple" in this disclosure refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0037] Figure 1 is a front view of the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 2 is a rear view of the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 3 is a left view of the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 4 is a top view of the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 5 is a structural schematic diagram of the support frame in the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 6 is a structural schematic diagram of the power cabinet in the wind power converter provided by the embodiment of the first aspect of the present disclosure; Figure 7 is a structural schematic diagram of the grid-connected cabinet in the wind power converter provided by the embodiment of the first aspect of the present disclosure.

[0038] As shown in Figures 1 to 7, an embodiment of the present disclosure provides a wind power converter 100, including a power cabinet 10 having a first accommodating space 101, the power cabinet 10 including a partition 11 and a back plate 12, the partition 11 separates the first accommodating space 101 into a power module space 1011 and a reactance module space 1012, the power cabinet 10 further including a first fan 13 and a second fan 14, the first fan 13 is arranged on the partition 11 and generates an airflow in the direction from the power module space 1011 to the reactance module space 1012, the second fan 14 is arranged on the back plate 12 at a position corresponding to the reactance module space 1012; the second fan 14 includes a support frame 141 connected to the back plate 12 and a body 142 installed on the support frame 141, and the angle between the air outlet direction of the second fan 14 and the air outlet direction of the first fan 13 is an acute angle.

[0039] The wind power converter 100 is an integral component of a wind turbine generator set, primarily responsible for converting wind energy into electrical energy. By adjusting its internal circuitry, the wind power converter 100 converts unstable wind energy into stable electrical energy to meet the needs of the power grid. Furthermore, the wind power converter 100 controls the power factor and voltage of wind power, improving the stability and reliability of the entire wind turbine generator set. In wind power generation, the performance of the wind power converter 100 directly impacts the performance and efficiency of the entire wind power system.

[0040] The power cabinet 10 has a first accommodating space 101, which means that the power cabinet 10 is an enclosed cabinet structure, which can at least accommodate the power module and the reactance module to provide a relatively stable, independent and stable working environment for the above-mentioned two. The first accommodating space 101 can at least be used to accommodate the above-mentioned power module and reactance module.

[0041] The power cabinet 10 includes a partition 11 and a back panel 12. The function of the partition 11 is to separate the first accommodating space 101 into two relatively independent sub-spaces, namely the power module space 1011 and the reactance module space 1012, so that the power module space 1011 can be used to accommodate the aforementioned power module, and the reactance module space 1012 can be used to accommodate the aforementioned reactance module, so that the working environment of the power module and the reactance module are relatively independent, thereby reducing mutual interference between the two.

[0042] In these embodiments of the present disclosure, the partition 11 can be arranged parallel to the horizontal plane so that the power module space 1011 and the reactance module space 1012 are relatively independent in the vertical direction. In some embodiments, the power cabinet 10 can also be arranged to include a second partition 15 spaced apart from the partition 11. In this way, the partition 11 and the second partition 15 form a sandwich structure, and the air inlet of the first fan 13 is arranged on the side of the partition 11 close to the power module space 1011, and the air outlet of the first fan 13 is arranged on the side of the second partition 15 close to the reactance module space 1012. On the one hand, the structural stability of the first fan 13 can be enhanced, and on the other hand, a sandwich can be provided between the power module space 1011 and the reactance module space 1012 to reduce the heat exchange efficiency between the two, thereby further reducing the impact of heat generated by the reactance module space 1012 on the power module space 1011.

[0043] The first fan 13 is arranged on the partition 11 and generates airflow in the direction from the power module space 1011 to the reactance module space 1012. A possible implementation method is that a through hole connecting the power module space 1011 and the reactance module space 1012 is opened on the partition 11, and the first fan 13 is arranged in the aforementioned through hole, and the wind direction generated by the first fan 13 is along the direction from the power module space 1011 to the reactance module space 1012.

[0044] The second fan 14 is arranged at a position of the back panel 12 corresponding to the reactance module space 1012, wherein the back panel 12 is the plate portion of the power cabinet 10 opposite to the cabinet door. In some embodiments, its function is to cooperate with the cabinet door, two side panels, the top panel and the bottom panel to form a rectangular frame-shaped first accommodating space 101.

[0045] The second fan 14 is arranged at a position on the back panel 12 corresponding to the reactance module space 1012, which means that the second fan 14 is connected to the back panel 12 and is used to transport the air in the reactance module space 1012 to the outside of the cabinet, so as to generate an airflow in the reactance module space 1012 that can produce heat exchange with the reactance module, thereby keeping the reactance module working in a suitable temperature field.

[0046] Exemplarily, the second fan 14 is connected to the back panel 12. A possible implementation method is that the second fan 14 is fixedly connected to the back panel 12 to enhance the structural consistency between the second fan 14 and the back panel 12. In some embodiments, the second fan 14 and the back panel 12 can also be provided with a detachable connection to facilitate subsequent maintenance or replacement of the second fan 14.

[0047] Second fan 14 includes a support frame 141 connected to back panel 12 and a body 142 mounted on support frame 141. Support frame 141 is configured to connect to back panel 12 and provide support for body 142. For example, support frame 141 is connected to back panel 12. In a possible embodiment, support frame 141 and back panel 12 are detachably connected via screws, bolts, or other connectors.

[0048] The body 142 is a component in the second fan 14 that generates airflow. For example, in these embodiments of the present disclosure, the body 142 can be set as an axial flow fan and the first fan 13 can be set as a centrifugal fan.

[0049] The angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 is an acute angle, the purpose of which is to reduce the impact between the airflow generated by the second fan 14 and the airflow generated by the first fan 13, and improve the smoothness of the overall gas flow channel in the power cabinet 10.

[0050] At the same time, in these embodiments of the present disclosure, the air outlet of the power cabinet 10 can also be matched with the air outlet of the nacelle of the wind turbine generator set, that is, the hot air generated in the power cabinet 10 can be directly transported to the outside of the wind turbine generator set by directly utilizing the cooperation of the first fan 13 and the second fan 14, thereby reducing the possibility of temperature changes in the nacelle of the wind turbine generator set. In this way, the air outlet size of the power cabinet 10 is required to match the air outlet size of the nacelle, so that the air outlet of the power cabinet 10 (the air outlet direction of the second fan 14) is perpendicular to the direction of the airflow generated by the first fan 13. When the first fan 13 transports the hot air in the power module space 1011 to the reactance module space 1012, an airflow perpendicular to or even opposite to the air outlet direction will be generated at the air outlet of the second fan 14, thereby reducing the air output of the second fan 14 and reducing the working efficiency of the second fan 14.

[0051] Based on this, by setting the angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 to be an acute angle, the possibility of mutual influence between the two airflows can be reduced, thereby effectively improving the heat exchange efficiency of the second fan 14.

[0052] According to the wind power converter 100 provided by the embodiment of the present disclosure, the second fan 14 is provided with a support frame 141 connected to the back plate 12 and a body 142 installed on the support frame 141. The angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 is an acute angle, that is, the heat of the components working in the power module space 1011 is transported to the reactor module space 1012 by the first fan 13, and the heat of the components working in the reactor module space 1012 is combined with the heat generated by ... The heat transmitted from the power module space 1011 is discharged from the power cabinet 10 together. The angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 is an acute angle, which can reduce the degree of mutual interference between the delivery air of the first fan 13 and the delivery air of the second fan 14, which is beneficial to the formation of the air duct in the power cabinet 10, and reduces the possibility of the overall air duct heat dissipation efficiency of the power cabinet 10 being reduced due to the mutual interference of the delivery air generated by different fans, so that each power electronic device can operate at normal temperature with higher safety and reliability.

[0053] According to an embodiment of the first aspect of the present disclosure, the support frame 141 includes a mounting plate 1411 and two connecting plates 1412. The two connecting plates 1412 are arranged at both ends of the mounting plate 1411 in the length direction, and the mounting plate 1411 is connected to the back plate 12 through the two connecting plates 1412; the distance between the end of the mounting plate 1411 close to the power module space 1011 and the back plate 12 is greater than the distance between the end of the mounting plate 1411 away from the power module space 1011 and the back plate 12, and the body 142 is installed on the mounting plate 1411.

[0054] The body 142 is installed on the mounting plate 1411. A possible practical method is that the mounting plate 1411 is provided with a through hole along the thickness direction, the body 142 is installed in the through hole of the mounting plate 1411, and the air inlet end of the body 142 is located on the side of the mounting plate 1411 in the thickness direction close to the reactance module space 1012, and the air outlet end of the body 142 is located on the side of the mounting plate 1411 in the thickness direction away from the reactance module space 1012.

[0055] In some embodiments, the mounting plate 1411 can be set as a rectangular plate body, and the number of through holes on the mounting plate 1411 is multiple, and the multiple through holes are arranged in sequence along the length direction of the mounting plate 1411. Accordingly, the number of the machine bodies 142 can be set to be multiple, and one machine body 142 is installed in one through hole to increase the intensity of the airflow generated by the second fan 14 and improve the heat exchange efficiency of the second fan 14.

[0056] Two connecting plates 1412 are arranged at both ends of the length direction of the mounting plate 1411, and the mounting plate 1411 is connected to the back plate 12 through the two connecting plates 1412. That is, the function of the connecting plate 1412 is to install the mounting plate 1411 on the back plate 12. At the same time, since it is necessary to control the angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 to be an acute angle, in these embodiments of the present disclosure, the air outlet direction X of the second fan 14 can also be adjusted by adjusting the connection angle between the mounting plate 1411 and the connecting plate 1412.

[0057] The distance between the end of the mounting plate 1411 close to the power module space 1011 and the back plate 12 is greater than the distance between the end of the mounting plate 1411 away from the power module space 1011 and the back plate 12, which means that the end of the mounting plate 1411 close to the power module space 1011 is farther away from the back plate 12, so that after the body 142 is installed on the mounting plate 1411, the air outlet of the body 142 faces the ground, thereby making the angle between the air outlet direction X of the second fan 14 and the air outlet direction Y of the first fan 13 an acute angle.

[0058] In these embodiments of the present disclosure, without changing the size of the air outlet of the power cabinet 10, by obliquely installing the body 142 to the mounting plate 1411 to change the air outlet direction X of the second fan 14, it is possible to ensure that while the subsequent air outlet of the power cabinet 10 is normally connected and installed with the air outlet of the cabin, the patency of the internal air duct of the power cabinet 10 is improved, thereby effectively improving the heat exchange efficiency between the power cabinet 10 and the outside world, and achieving higher safety and reliability.

[0059] According to an embodiment of the first aspect of the present disclosure, there are multiple bodies 142, and the multiple bodies 142 are arranged in sequence along the length direction of the mounting plate 1411 to enhance the intensity of the airflow generated by the second fan 14 and enhance the heat exchange efficiency of the second fan 14.

[0060] According to an embodiment of the first aspect of the present disclosure, the back plate 12 includes a plate body 121 and a first air outlet guide frame 122. The first air outlet 1211 is provided in the area of ​​the plate body 121 corresponding to the reactance module space 1012. The first air outlet guide frame 122 is connected to the plate body 121 and is provided on the periphery of the first air outlet 1211 away from the reactance module space 1012. Two connecting plates 1412 are connected to the first air outlet guide frame 122.

[0061] The plate body 121 is the main structure of the back plate 12. The area of ​​the plate body 121 corresponding to the reactance module space 1012 is provided with a first air outlet 1211, which means that the reactance module space 1012 can communicate with the outside through the first air outlet 1211 provided on the plate body 121.

[0062] The first air outlet guide frame 122 can be considered a component that is mounted around the periphery of the first air outlet 1211 and located outside the reactance module space 1012. Its function is to lower the first air outlet 1211 to facilitate subsequent connection with the nacelle's air outlet. In these embodiments of the present disclosure, a tarpaulin (not shown) can be installed at a section of the first air outlet guide frame 122 away from the reactance module space 1012. The tarpaulin can be a structure with two open ends, one end of which is mounted on the first air outlet guide frame 122 and the other end is connected to the nacelle's air outlet. At this point, the heat dissipation path for power cabinet 10 is as follows: First fan 13 generates an inlet airflow perpendicular to partition 11, directing the hot air generated within power module space 1011 into reactor module space 1012. Simultaneously, second fan 14 generates an airflow at an acute angle to the airflow generated by first fan 13, directing both airflows through first air outlet 1211 into the tarpaulin. The airflow is then exhausted to the atmosphere through the tarpaulin and the cabin's air outlet. This prevents heat accumulation within the cabin, improves the heat exchange efficiency of power cabinet 10, and enhances safety and reliability.

[0063] It should be noted that in these embodiments of the present disclosure, the air inlet of the first fan 13 is set at the position of the power cabinet 10 corresponding to the power module space 1011, and the air inlet of the second fan 14 is set at the position of the power cabinet 10 corresponding to the reactance module space 1012. The two are connected in parallel for independent heat dissipation, and the hot air is collected and discharged from the first air outlet 1211.

[0064] The two connecting plates 1412 are connected to the first air outlet guide frame 122. A possible implementation method is that the two connecting plates 1412 are detachably connected to the first air outlet guide frame 122 by means of screws, bolts, studs and other connecting parts; or, in some embodiments, the two connecting plates 1412 and the first air outlet guide frame 122 can also be detachably connected by means of snaps.

[0065] According to an embodiment of the first aspect of the present disclosure, the first air outlet guide frame 122 includes a plurality of straight plates 1221 and at least one inclined plate 1222. The plurality of straight plates 1221 and the at least one inclined plate 1222 are connected end to end to form a ring structure. The plane where the straight plates 1221 are located is perpendicular to the plate body 121. Adjacent straight plates 1221 and the straight plates 1221 and the inclined plates 1222 are detachably connected. There is an angle between the plane where the inclined plates 1222 are located and the plane where the plate body 121 is located, and the orthographic projection of the inclined plates 1222 onto the plate body 121 does not overlap with the air outlet.

[0066] The first air outlet guide frame 122 is a structure with openings at both ends. After the first air outlet guide frame 122 is installed on the plate body 121, one end of the first air outlet guide frame 122 is connected to the first air outlet 1211, and the other end of the first air outlet guide frame 122 is used to cover the tarpaulin or directly connect to the air outlet of the cabin.

[0067] Based on this, in these embodiments of the present disclosure, the straight plates 1221 and the inclined plates 1222 are both side plates in the first tuyere guide frame 122 for enclosing two ports, that is, multiple straight plates 1221 and at least one inclined plate 1222 are connected end to end to form a ring structure.

[0068] The plane where the straight plate 1221 is located is perpendicular to the plate body 121, and the adjacent straight plates 1221 and the straight plates 1221 and the inclined plates 1222 are detachably connected. In this way, during the installation or disassembly of the second fan 14, the first air outlet 1211 can be exposed by disassembling the straight plate 1221 or the inclined plate 1222, which facilitates the operator to install the second fan 14.

[0069] There is an angle between the plane where the inclined plate 1222 is located and the plane where the plate body 121 is located, and the positive projection of the inclined plate 1222 onto the plate body 121 does not overlap with the air outlet. In this way, the installation area of ​​the second fan 14 at the first air outlet 1211 can be expanded, further improving the convenience of installation and disassembly of the second fan 14 and reducing the possibility of damage to the second fan 14 during installation or disassembly.

[0070] At the same time, since the positive projection of the inclined plate 1222 onto the plate body 121 does not overlap with the air outlet, the possibility of the inclined plate 1222 affecting the air output of the second fan 14 can be reduced, thereby improving the smoothness of the air output of the second fan 14 and further improving the working efficiency of the second fan 14.

[0071] According to an embodiment of the first aspect of the present disclosure, the angle between the plane where the inclined plate 1222 is located and the plane where the plate body 121 is located is the same as the angle between the plane where the mounting plate 1411 is located and the plane where the plate body 121 is located.

[0072] In these embodiments of the present disclosure, the first air outlet guide frame 122 includes at least one inclined plate 1222, and the angle between the plane of the inclined plate 1222 and the plane of the plate body 121 is equal to the angle between the plane of the mounting plate 1411 and the plane of the plate body 121. As a result, the second fan 14 can be installed or removed by removing the inclined plate 1222. Furthermore, because the installation and removal angles of the second fan 14 are controlled to be the same as those of the inclined plate 1222, the second fan 14 can be more easily inserted into or removed from the hole exposed after the inclined plate 1222 is removed, thereby improving the installation and removal efficiency of the power cabinet 10.

[0073] For example, in these embodiments of the present disclosure, the inclined plate 1222 may be provided as a plate structure in the first tuyere guide frame 122 that faces away from the power module space 1011 .

[0074] According to an embodiment of the first aspect of the present disclosure, the number of inclined plates 1222 is 2. This further improves the installation and removal efficiency of the power cabinet 10.

[0075] According to an embodiment of the first aspect of the present disclosure, the wind power converter 100 further includes a grid cabinet 20 having a second accommodating space 201 and a control cabinet 30 having a third accommodating space 301. A connecting hole (not shown) is provided at one end of the grid cabinet 20 and the control cabinet 30, and the second accommodating space 201 and the third accommodating space 301 are connected through the connecting hole; a second air outlet 21 is provided at one end of the grid cabinet 20 close to the connecting hole, and a plurality of first air inlets 22 are provided at the other end of the grid cabinet 20, a second air inlet 31 is provided at one end of the control cabinet 30 close to the first air inlet 22, a third fan 23 is provided at the connecting hole for generating an airflow along the control cabinet 30 toward the grid cabinet 20, and a fourth fan 24 for generating an outward airflow is provided at the second air outlet 21.

[0076] A connecting hole is provided at one end of the power grid cabinet 20 and the control cabinet 30, which means that the power grid cabinet 20 and the control cabinet 30 are connected through the connecting hole. A possible implementation method is that the power grid cabinet 20 and the control cabinet 30 are an integrated structure, and there is a baffle in the integrated structure that separates the integrated structure into the aforementioned second accommodating space 201 and the third accommodating space 301. The connecting hole is opened on the baffle to connect the second accommodating space 201 with the third accommodating space 301.

[0077] In these embodiments of the present disclosure, it is equivalent to merging the air flow channels of the grid-connected cabinet 20 and the control cabinet 30, canceling the original air outlet structure of the control cabinet 30, and instead using the third fan 23 to introduce the heat generated in the third storage space 301 into the second storage space 201, and using the fourth fan 24 to merge the heat generated in the second storage space 201 with the aforementioned heat introduced into the second storage space 201, and discharge them uniformly through the second air outlet 21. This can reduce the structure of the wind power converter 100, reduce the production process of the control cabinet 30, and improve the production efficiency of the wind power converter 100.

[0078] Accordingly, in these embodiments of the present disclosure, a second air outlet guide frame having the same structure and function as the first air outlet guide frame 122 may also be provided at the second air outlet 21 , which will not be described in detail here.

[0079] According to an embodiment of the first aspect of the present disclosure, the number of the plurality of first air inlets 22 is 6 to 12.

[0080] In these embodiments of the present disclosure, by setting a plurality of first air inlets 22 with a number of 6 to 12, the number of first air inlets 22 is increased compared with the related art, which is equivalent to increasing the air inlet area of ​​the first air inlet 22, thereby reducing the wind speed of the air flow when flowing into the grid cabinet 20, and reducing the possibility of damage to the components in the grid cabinet 20 under the action of cooling air.

[0081] For example, in these embodiments of the present disclosure, the number of first air inlets 22 can be set to 8, and the 8 first air inlets 22 are respectively arranged on each side wall of the grid cabinet 20, thereby realizing all-round air intake and reducing the possibility of multiple first air inlets 22 being blocked.

[0082] It should be noted that in these embodiments of the present disclosure, the reason why the number of first air inlets 22 can be increased is also because the integrated setting of the air ducts of the grid cabinet 20 and the control cabinet 30 can save the installation of a wind turbine in the common structure of the two, and then the extra space in the grid cabinet 20 can be used to set more first air inlets 22, thereby further improving the safety and reliability of the wind power converter 100.

[0083] According to an embodiment of the first aspect of the present disclosure, the power cabinet 20 includes a vacuum contactor 25 and a grid-side circuit breaker 26. The vacuum contactor 25 and the grid-side circuit breaker 26 are connected by a copper busbar 27. The setting direction of the copper busbar 27 is parallel to the direction of airflow generated by the fourth fan 24 in the power cabinet 20.

[0084] In these embodiments of the present disclosure, by replacing two conventional air-type stator contactors arranged side by side in the relevant technical center with a vacuum contactor 25, on the one hand, the number of copper bars 27 between the stator contactor and the grid-side circuit breaker 26 can be further reduced, and the space occupied by the power cabinet 20 can be further reduced; at the same time, on the other hand, the position of the vacuum contactor 25 can be adjusted in a more spacious power cabinet 20 so that the copper bar 27 between the vacuum contactor 25 and the grid-side circuit breaker 26 is arranged in parallel with the direction of the airflow generated by the fourth fan 24. On the one hand, the number of copper bars 27 is reduced, which can reduce the obstruction of the airflow in the power cabinet 20. On the other hand, the setting direction of the copper bar 27 can be set parallel to the direction of the airflow generated by the fourth fan 24 in the power cabinet 20, thereby reducing the influence of the structure of the copper bar 27 itself on the airflow, and improving safety and reliability.

[0085] It should be noted that in these embodiments of the present disclosure, the airflow direction generated by the fourth fan 24 in the grid cabinet 20 does not refer to the airflow direction of the fourth fan 24 at the air outlet or air inlet, but the airflow direction when the air flows in the grid cabinet 20. In these embodiments of the present disclosure, since the first air inlet 22 of the grid cabinet 20 is set at the lower end of the grid cabinet 20, and the second air outlet 21 is set at the upper end of the grid cabinet 20, that is, the airflow direction generated by the fourth fan 24 in the grid cabinet 20 is parallel to the setting direction of the copper busbar 27, the obstruction of the copper busbar 27 to the airflow in the grid cabinet 20 can be reduced, and the heat exchange efficiency in the grid cabinet 20 can be effectively improved.

[0086] The beneficial effect of the present disclosure is that by setting a second fan including a support frame connected to the backplate and a body installed on the support frame, the angle between the air outlet direction of the second fan and the air outlet direction of the first fan is an acute angle, that is, the first fan is used to transport the heat generated by the working components in the power module space to the inductor module space, and the second fan is used to combine the heat generated by the working components in the inductor module space with the aforementioned heat transmitted by the power module space and discharge them out of the power cabinet. The angle between the air outlet direction of the second fan and the air outlet direction of the first fan is an acute angle, which can reduce the degree of mutual interference between the delivery wind of the first fan and the delivery wind of the second fan, which is beneficial to the formation of the air duct in the power cabinet, and reduces the possibility of reduced heat dissipation efficiency of the overall air duct of the power cabinet due to mutual interference between the delivery winds generated by different fans, so that each power electronic device can operate at normal temperature with higher safety and reliability.

[0087] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present disclosure is limited to these examples. Under the concept of the present disclosure, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0088] The one or more embodiments of the present disclosure are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of the present disclosure. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the one or more embodiments of the present disclosure should be included within the scope of protection of the present disclosure.

Claims

1. A wind power converter (100), comprising a power cabinet (10) having a first accommodation space (101), wherein, The power cabinet (10) includes a partition (11) and a back plate (12). The partition (11) divides the first accommodation space (101) into a power module space (1011) and a reactance module space (1012). The power cabinet (10) further includes a first fan (13) and a second fan (14). The first fan (13) is arranged on the partition (11) and generates an air flow in the direction from the power module space (1011) to the reactance module space (1012). The second fan (14) is arranged at a position on the back plate (12) corresponding to the reactance module space (1012). The second fan (14) includes a support frame (141) connected to the back plate (12) and a machine body (142) installed on the support frame (141). The included angle between the air outlet direction of the second fan (14) and the air outlet direction of the first fan (13) is an acute angle.

2. The wind power converter (100) according to claim 1, wherein, The support frame (141) includes a mounting plate (1411) and two connecting plates (1412). The two connecting plates (1412) are arranged at both ends of the mounting plate (1411) in the length direction. The mounting plate (1411) is connected to the back plate (12) through the two connecting plates (1412). The distance between one end of the mounting plate (1411) close to the power module space (1011) and the back plate (12) is greater than the distance between the other end of the mounting plate (1411) away from the power module space (1011) and the back plate (12). The machine body (142) is installed on the mounting plate (1411).

3. The wind power converter (100) according to claim 1, wherein, The power cabinet (10) further includes a second partition (15) arranged at an interval from the partition (11). The partition (11) and the second partition (15) form a sandwich structure. The air inlet of the first fan (13) is arranged on one side of the partition (11) close to the power module space 1011, and the air outlet of the first fan (13) is arranged on one side of the second partition (15) close to the reactance module space (1012).

4. The wind power converter (100) according to claim 2, wherein, The number of the machine bodies (142) is multiple, and the multiple machine bodies (142) are arranged at intervals in sequence along the length direction of the mounting plate (1411).

5. The wind power converter (100) according to claim 2, wherein, The back plate (12) includes a plate body part (121) and a first air outlet guide frame (122). A first air outlet (1211) is arranged in the area of the plate body part (121) corresponding to the reactance module space (1012). The first air outlet guide frame (122) is connected to the plate body part (121) and is arranged on the periphery of the first air outlet (1211) on the side away from the reactance module space (1012). The two connecting plates (1412) are connected to the first air outlet guide frame (122).

6. The wind power converter (100) according to claim 5, wherein, A tarpaulin is arranged on a section of the first air outlet guide frame (122) away from the reactance module space (1012). The tarpaulin is a structure with openings at both ends. One end is sleeved on the first air outlet guide frame (122), and the other end is communicated with the air outlet of the engine room.

7. The wind power converter (100) according to claim 6, wherein, The first air outlet guide frame (122) has a structure with openings at both ends. One opening of the first air outlet guide frame (122) is communicated with the first air outlet (1211), and the other end of the first air outlet guide frame (122) is used to sleeved with a tarpaulin or directly communicated with the air outlet of the engine room.

8. The wind power converter (100) according to claim 5, wherein, The first air outlet guide frame (122) includes a plurality of straight plates (1221) and at least one inclined plate (1222). The plurality of straight plates (1221) and at least one inclined plate (1222) are connected end to end to form an annular structure. The plane where the straight plates (1221) are located is perpendicular to the plate body part (121). The adjacent straight plates (1221) and between the straight plates (1221) and the inclined plate (1222) are detachably connected; The plane where the inclined plate (1222) is located has an angle with the plane where the plate body part (121) is located, and the orthographic projection of the inclined plate (1222) on the plate body part (121) does not overlap with the air outlet.

9. The wind power converter (100) according to claim 8, wherein, The angle between the plane where the inclined plate (1222) is located and the plane where the plate body part (121) is located is the same as the angle between the plane where the mounting plate (1411) is located and the plane where the plate body part (121) is located.

10. The wind power converter (100) according to claim 9, wherein, The inclined plate (1222) is a plate structure in the first air outlet guide frame (122) that deviates from the power module space (1011).

11. The wind power converter (100) according to claim 8, wherein, The number of the inclined plates (1222) is 2.

12. The wind power converter (100) according to claim 1, wherein, The wind power converter (100) further includes a grid connection cabinet (20) having a second accommodation space (201) and a control cabinet (30) having a third accommodation space (301). One end of the grid connection cabinet (20) and the control cabinet (30) is provided with a communication hole, and the second accommodation space (201) and the third accommodation space (301) are communicated through the communication hole; One end of the grid connection cabinet (20) close to the communication hole is provided with a second air outlet (21), and the other end of the grid connection cabinet (20) is provided with a plurality of first air inlets (22). One end of the control cabinet (30) close to the first air inlets (22) is provided with a second air inlet. A third fan (23) for generating an air flow in the direction from the control cabinet (30) to the grid connection cabinet (20) is provided at the communication hole, and a fourth fan (24) for generating an air flow outward is provided at the second air outlet (21).

13. The wind power converter (100) according to claim 12, wherein, The number of the plurality of first air inlets (22) is 6 to 12.

14. The wind power converter (100) according to claim 12, wherein, The grid connection cabinet (20) includes a vacuum contactor (25) and a grid side circuit breaker (26). The vacuum contactor (25) and the grid side circuit breaker (26) are connected by a copper bar (27). The setting direction of the copper bar (27) is parallel to the direction of the air flow generated by the fourth fan (24) in the grid connection cabinet (20).

15. The wind power converter (100) according to claim 12, wherein, A second air outlet guide frame with the same structure and function as the first air outlet guide frame (122) is provided at the second air outlet (21).

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