Converter

Abstract

The utility model discloses a converter. The converter comprises a cabinet body, the cabinet body comprises at least one function cabinet, and each function cabinet is internally provided with a heat dissipation air channel; and at least two distribution transformers, each distribution transformer is installed in the function cabinet, and each distribution transformer is located on the heat dissipation air channel. According to the converter provided by the embodiment of the utility model, at least two distribution transformers are arranged in the converter, so that the higher the overall efficiency of the distribution transformers is, the less the energy loss is, and the higher the system utilization rate is.

Description

Technical Field

[0001] The utility model relates to the field of wind power generation, in particular to a converter. Background Art

[0002] The converters in the field of wind power generation are highly integrated, and usually the converters are equipped with distribution transformers. In different converters, the capacity of the distribution transformers varies according to different needs. Since the main body of the distribution transformer is composed of a coil and an iron core, a large-capacity distribution transformer will have more coil turns, and the volume will increase accordingly. However, with the increase in power density, the internal layout of the converter is becoming more and more compact. Therefore, the converter has increasingly stringent requirements on the volume of its internal components. A large distribution transformer will inevitably take up most of the converter space, which is not conducive to the internal layout of the converter, nor to the maintenance of the distribution transformer itself. Utility Model Content

[0003] The utility model provides a converter, in which at least two distribution transformers are arranged, so that the overall efficiency of the distribution transformers is higher, the energy loss is less, and the system utilization rate is higher.

[0004] An embodiment of the utility model provides a converter, which includes: a cabinet body, the cabinet body includes at least one functional cabinet, each functional cabinet has a heat dissipation duct; and at least two distribution transformers, each of the distribution transformers is installed in the functional cabinet, and each of the distribution transformers is located on the heat dissipation duct.

[0005] According to the aforementioned implementation mode of the present utility model, each of the functional cabinets includes an air inlet and an air outlet that are spaced apart from each other, and the heat dissipation air duct is formed between the air inlet and the air outlet.

[0006] According to any of the aforementioned implementations of the utility model, the distribution transformer is located at the air inlet in the functional cabinet.

[0007] According to any of the foregoing embodiments of the utility model, the at least one functional cabinet includes a power cabinet and a power cabinet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, and the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, wherein at least one distribution transformer is installed at the power cabinet air inlet of the power cabinet, and at least one distribution transformer is installed at the power cabinet air inlet of the power cabinet.

[0008] According to any of the aforementioned embodiments of the utility model, the converter further comprises: a reactor assembly, which is arranged in the power cabinet and located at the air inlet of the power cabinet, wherein the distribution transformer is installed on at least one side of the reactor assembly.

[0009] According to any of the aforementioned embodiments of the present utility model, the distribution transformer is installed on one side of the reactor assembly.

[0010] According to any of the aforementioned embodiments of the present utility model, the distribution transformer is installed on opposite sides of the reactor assembly.

[0011] According to any of the foregoing embodiments of the utility model, the at least one functional cabinet includes a power cabinet, a power cabinet and a control cabinet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, and the control cabinet includes a control cabinet air inlet and a control cabinet air outlet, wherein at least one distribution transformer is installed at the power cabinet air inlet of the power cabinet, at least one distribution transformer is installed at the power cabinet air inlet of the power cabinet, and at least one distribution transformer is installed at the control cabinet air inlet of the control cabinet.

[0012] According to any of the foregoing embodiments of the utility model, the at least one functional cabinet includes a power cabinet, a machine-side power cabinet and a grid-side power cabinet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, the machine-side power cabinet includes a machine-side power cabinet air inlet and a machine-side power cabinet air outlet, and the grid-side power cabinet includes a grid-side power cabinet air inlet and a grid-side power cabinet air outlet, wherein the distribution transformer is installed at the power cabinet air inlet of the power cabinet, and the distribution transformer is installed in at least one of the machine-side power cabinet and the grid-side power cabinet.

[0013] According to any of the foregoing embodiments of the present utility model, the grid-side power cabinet is located between the grid-connected cabinet and the machine-side power cabinet, wherein the distribution transformer is installed at the air inlet of the grid-side power cabinet in the machine-side power cabinet and the grid-side power cabinet.

[0014] According to the converter of the embodiment of the utility model, it includes at least two distribution transformers, each distribution transformer is installed in a functional cabinet. On the one hand, the converter is equipped with at least two distribution transformers, so that the overall efficiency of the distribution transformer is higher, the energy loss is less, and the system utilization rate is higher; on the other hand, the converter is equipped with at least two distribution transformers. Compared with the configuration of a single large-capacity distribution transformer, the distribution transformer can be flexibly arranged in the converter, which is convenient for maintenance in the later stage; on the other hand, at least two distribution transformers can supply power to the same load at the same time. When supplying power to the same load at the same time, the iron loss of the distribution transformer can be reduced, and when one of the distribution transformers fails, the other distribution transformers can continue to supply power normally, making the converter operation more stable and reliable. In addition, in the converter of the embodiment of the utility model, each functional cabinet has a heat dissipation duct, each distribution transformer is located on the heat dissipation duct, and at least two distribution transformers are configured in the converter. Compared with the configuration of a single large-capacity distribution transformer, the distribution transformer loss is dispersed, the heat is not concentrated, and it is more conducive to the heat dissipation of the distribution transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the first embodiment of the converter of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heat dissipation duct in the first embodiment of the converter of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the second embodiment of the converter of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the third embodiment of the converter of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the fourth embodiment of the converter of the utility model.

[0021] Description of reference numerals:

[0022] 100-cabinet; 110-grid cabinet; 111-grid cabinet air inlet; 112-grid cabinet air outlet; 120-power cabinet; 121-power cabinet air inlet; 122-power cabinet air outlet; 130-control cabinet; 131-control cabinet air inlet; 132-control cabinet air outlet; 140-machine side power cabinet; 141-machine side power cabinet air inlet; 142-machine side power cabinet air outlet; 150-grid side power cabinet; 151-grid side power cabinet air inlet; 152-grid side power cabinet air outlet;

[0023] 200-distribution transformer;

[0024] 310-circuit breaker; 320-contactor;

[0025] 400-reactor assembly; 410-machine side reactor; 420-grid side reactor;

[0026] 500-Power Module.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] An embodiment of the utility model provides a converter. Figure 1The schematic diagram of the structure of the first embodiment of the converter of the utility model is as follows. The converter comprises: a cabinet 100 and at least two distribution transformers 200 .

[0032] The cabinet 100 includes at least one functional cabinet, each of which has a heat dissipation duct. Each distribution transformer 200 is installed in the functional cabinet, and each distribution transformer 200 is located on the heat dissipation duct.

[0033] The converter according to the embodiment of the utility model comprises at least two distribution transformers 200, each of which is installed in a functional cabinet, so that the overall efficiency of the distribution transformer 200 is higher, the energy loss is less, and the system utilization rate is higher.

[0034] In some embodiments, each functional cabinet includes an air inlet and an air outlet that are spaced apart, and a heat dissipation duct is formed between the air inlet and the air outlet.

[0035] Figure 2 This is a schematic diagram of the structure of the heat dissipation duct in the first embodiment of the converter of the utility model. Figure 2 In the embodiment, the arrows are used to show the direction of wind flow in the embodiment. In the embodiment, at least one functional cabinet includes a grid cabinet 110 and a power cabinet 120, the grid cabinet 110 includes a grid cabinet air inlet 111 and a grid cabinet air outlet 112, and the power cabinet 120 includes a power cabinet air inlet 121 and a power cabinet air outlet 122.

[0036] According to the converter of the embodiment of the utility model, each functional cabinet has a heat dissipation duct, and each distribution transformer 200 can correspond to a heat dissipation duct. The loss of at least two distribution transformers 200 is dispersed, and the heat is not concentrated, which is more conducive to the heat dissipation of the distribution transformer 200.

[0037] In some embodiments, the converter further includes a cooling fan 600, which is installed in the cabinet 100 and located on the cooling air duct. By providing the cooling fan 600, the cooling efficiency of the cooling air duct can be further enhanced, thereby further improving the cooling effect of the distribution transformer 200.

[0038] In some embodiments, the distribution transformer 200 is located at the air inlet in the functional cabinet. The installation position of the distribution transformer 200 on the heat dissipation air duct may not be limited to the air inlet. In some other embodiments, the distribution transformer 200 may be located at other positions of the heat dissipation air duct. In this embodiment, the distribution transformer 200 is located at the air inlet, which has a better heat dissipation effect on the distribution transformer 200.

[0039] In some embodiments, the functional cabinet includes an air inlet and an air outlet that are spaced apart, and the converter also includes a cooling fan 600 , which is installed at the air outlet to further enhance the heat dissipation efficiency of the heat dissipation duct.

[0040] like Figure 1 In the first embodiment, at least one functional cabinet includes a power cabinet 110 and a power cabinet 120. The power cabinet 110 includes a power cabinet air inlet 111 and a power cabinet air outlet 112. The power cabinet 120 includes a power cabinet air inlet 121 and a power cabinet air outlet 122.

[0041] In this embodiment, at least one distribution transformer 200 is installed at the power cabinet air inlet 111 of the power cabinet 110 , and at least one distribution transformer 200 is installed at the power cabinet air inlet 121 of the power cabinet 120 .

[0042] The installation position of the distribution transformer 200 in the power cabinet 110 and the power cabinet 120 is not limited to the power cabinet air inlet 111 and the power cabinet air inlet 121 , as long as the distribution transformer 200 is located on the heat dissipation air duct.

[0043] In some embodiments, the converter further includes a circuit breaker 310 and a contactor 320, and the circuit breaker 310 and the contactor 320 are disposed in the grid cabinet 110. In some embodiments, the distribution transformer 200, the circuit breaker 310, and the contactor 320 in the grid cabinet 110 are all located on the heat dissipation duct formed between the grid cabinet air inlet 111 and the grid cabinet air outlet 112.

[0044] In some embodiments, the converter further includes a reactor assembly 400, and the reactor assembly 400 is disposed in the power cabinet 120. In this embodiment, the reactor assembly 400 is located at the air inlet 121 of the power cabinet. In some other embodiments, the reactor assembly 400 may not be limited to being located at the air inlet 121 of the power cabinet, as long as the reactor assembly 400 is on the heat dissipation duct.

[0045] In some embodiments, a distribution transformer 200 is installed on at least one side of the reactor assembly 400. In this embodiment, the reactor assembly 400 and at least one distribution transformer 200 may share a heat dissipation duct.

[0046] In some embodiments, the reactor assembly 400 includes a machine-side reactor 410 and a grid-side reactor 420 .

[0047] In some embodiments, the distribution transformer 200 , the machine-side reactor 410 , and the grid-side reactor 420 in the power cabinet 120 are all located on the heat dissipation duct formed between the power cabinet air inlet 121 and the power cabinet air outlet 122 .

[0048] In some embodiments, the converter further includes a power module 500 , which is disposed in the power cabinet 120 .

[0049] like Figure 1In the first embodiment, a distribution transformer 200 is installed on one side of the reactor assembly 400. In one example, in the power cabinet 120, the machine-side reactor 410, the grid-side reactor 420, and the distribution transformer 200 are arranged in sequence, and the distribution transformer 200 in the power cabinet 120 is located on the side of the reactor assembly 400 close to the grid cabinet 110.

[0050] In the first embodiment, a distribution transformer 200 is provided in each of the grid cabinet 110 and the power cabinet 120 .

[0051] Figure 3 1 is a schematic diagram of the structure of the second embodiment of the converter of the present invention. Part of the structure of the converter of the second embodiment is similar to that of the first embodiment. The differences between the two will be described below, and the similarities will not be described in detail.

[0052] In the second embodiment, at least one functional cabinet includes a power cabinet 110 and a power cabinet 120. A distribution transformer 200 is installed at the power cabinet air inlet 111 of the power cabinet 110. In the power cabinet 120, distribution transformers 200 are installed on opposite sides of the reactor assembly 400. In one example, the reactor assembly 400 includes a machine-side reactor 410 and a grid-side reactor 420, and a distribution transformer 200 is respectively provided on the side of the machine-side reactor 410 away from the grid-side reactor 420 and the side of the grid-side reactor 420 away from the machine-side reactor 410. In the above-mentioned second embodiment, a distribution transformer 200 is provided in the power cabinet 110, and two distribution transformers 200 are provided in the power cabinet 120.

[0053] Figure 4 1 is a schematic diagram of the structure of the third embodiment of the converter of the present invention. Part of the structure of the converter of the third embodiment is similar to that of the first embodiment. The differences between the two will be described below, and the similarities will not be described in detail.

[0054] In the third embodiment, at least one functional cabinet includes a power cabinet 110, a power cabinet 120, and a control cabinet 130. The power cabinet 110 includes a power cabinet air inlet 111 and a power cabinet air outlet 112. The power cabinet 120 includes a power cabinet air inlet 121 and a power cabinet air outlet 122. The control cabinet 130 includes a control cabinet air inlet 131 and a control cabinet air outlet 132.

[0055] In the third embodiment, at least one distribution transformer 200 is installed at the air inlet 111 of the power cabinet 110, at least one distribution transformer 200 is installed at the air inlet 121 of the power cabinet 120, and at least one distribution transformer 200 is installed at the air inlet 131 of the control cabinet 130. In the third embodiment, a distribution transformer 200 is provided in each of the power cabinet 110, the power cabinet 120, and the control cabinet 130.

[0056] Figure 5 Schematic diagram of the structure of the fourth embodiment of the converter of the utility model. In the fourth embodiment, at least one functional cabinet includes a power cabinet 110, a machine-side power cabinet 140, and a grid-side power cabinet 150. The power cabinet 110 includes a power cabinet air inlet 111 and a power cabinet air outlet 112. The machine-side power cabinet 140 includes a machine-side power cabinet air inlet 141 and a machine-side power cabinet air outlet 142. The grid-side power cabinet 150 includes a grid-side power cabinet air inlet 151 and a grid-side power cabinet air outlet 152.

[0057] In some embodiments, a distribution transformer 200 is installed at the power cabinet air inlet 111 of the power cabinet 110 , and a distribution transformer 200 is installed in at least one of the machine-side power cabinet 140 and the grid-side power cabinet 150 .

[0058] In this embodiment, the grid-side power cabinet 150 is located between the grid-connected cabinet 110 and the generator-side power cabinet 140.

[0059] In the fourth embodiment, a distribution transformer 200 is installed at the air inlet 151 of the machine-side power cabinet 140 and the grid-side power cabinet 150 .

[0060] The converter according to the embodiment of the utility model includes at least two distribution transformers 200, each distribution transformer 200 is installed in a functional cabinet. On the one hand, the converter is equipped with at least two distribution transformers 200, so that the overall efficiency of the distribution transformer 200 is higher, the energy loss is less, and the system utilization rate is higher; on the other hand, the converter is configured with at least two distribution transformers 200. Compared with configuring a single large-capacity distribution transformer, the distribution transformer 200 can be flexibly arranged in the converter, which is convenient for maintenance in the later stage; on the other hand, at least two distribution transformers 200 can supply power to the same load at the same time. When supplying power to the same load at the same time, the iron loss of the distribution transformer 200 can be reduced, and when one of the distribution transformers 200 fails, the other distribution transformers 200 can continue to supply power normally, so that the converter operation is more stable and reliable. In addition, in the converter of the embodiment of the utility model, each functional cabinet has a heat dissipation duct, each distribution transformer 200 is located on the heat dissipation duct, and at least two distribution transformers 200 are configured in the converter. Compared with configuring a single large-capacity distribution transformer, the loss of the distribution transformer 200 is dispersed and the heat is not concentrated, which is more conducive to the heat dissipation of the distribution transformer 200.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A converter, characterized in that: include: A cabinet body, the cabinet body comprising at least one functional cabinet, each functional cabinet having a heat dissipation duct; as well as At least two distribution transformers, each of which is installed in the functional cabinet, and each of which is located on the heat dissipation duct.

2. The converter according to claim 1, characterized in that Each of the functional cabinets includes an air inlet and an air outlet that are spaced apart from each other, and the heat dissipation air duct is formed between the air inlet and the air outlet.

3. The converter according to claim 2, characterized in that The distribution transformer is located at the air inlet in the functional cabinet.

4. The converter according to claim 2, characterized in that The at least one functional cabinet includes a power cabinet and a power cabinet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, and the power cabinet includes a power cabinet air inlet and a power cabinet air outlet. Among them, at least one distribution transformer is installed at the air inlet of the power cabinet of the power cabinet, and at least one distribution transformer is installed at the air inlet of the power cabinet of the power cabinet.

5. The converter according to claim 4, characterized in that Also includes: A reactor assembly is arranged in the power cabinet. Wherein, the distribution transformer is installed on at least one side of the reactor assembly.

6. The converter according to claim 1, characterized in that Also includes: A heat dissipation fan is installed on the cabinet and is located on the heat dissipation duct.

7. The converter according to claim 2, characterized in that Also includes: A cooling fan is installed at the air outlet.

8. The converter according to claim 2, characterized in that The at least one functional cabinet includes a grid cabinet, a power cabinet and a control cabinet, the grid cabinet includes a grid cabinet air inlet and a grid cabinet air outlet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, and the control cabinet includes a control cabinet air inlet and a control cabinet air outlet. Among them, at least one distribution transformer is installed at the air inlet of the power cabinet of the power cabinet, at least one distribution transformer is installed at the air inlet of the power cabinet of the power cabinet, and at least one distribution transformer is installed at the air inlet of the control cabinet of the control cabinet.

9. The converter according to claim 2, characterized in that: The at least one functional cabinet includes a power cabinet, a machine-side power cabinet and a grid-side power cabinet, the power cabinet includes a power cabinet air inlet and a power cabinet air outlet, the machine-side power cabinet includes a machine-side power cabinet air inlet and a machine-side power cabinet air outlet, and the grid-side power cabinet includes a grid-side power cabinet air inlet and a grid-side power cabinet air outlet, The distribution transformer is installed at the air inlet of the power cabinet, and the distribution transformer is installed in at least one of the machine-side power cabinet and the grid-side power cabinet.

10. The converter according to claim 9, characterized in that The grid-side power cabinet is located between the grid-connected cabinet and the generator-side power cabinet. Wherein, the distribution transformer is installed at the air inlet of the grid-side power cabinet in the machine-side power cabinet and the grid-side power cabinet.

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