CN215732779U

CN215732779U - Wind power converter and wind generating set

Info

Publication number: CN215732779U
Application number: CN202121279565.XU
Authority: CN
Inventors: 杨建超; 王世欢; 赵金强; 顾伟峰
Original assignee: Xinjiang Goldwind Science and Technology Co Ltd
Current assignee: Jinfeng Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-02-01
Anticipated expiration: 2031-06-08

Abstract

The utility model provides a wind power converter and wind generating set, wind power converter includes: a power cabinet accommodating power components; a machine side cabinet disposed above the power cabinet and accommodating a machine side assembly including at least one of a machine side reactor and a machine side breaker; and the grid side cabinet is arranged below the power cabinet and contains a grid side assembly comprising at least one of a grid side reactor and a grid side circuit breaker, wherein the machine side cabinet, the power cabinet and the grid side cabinet are independent cabinet bodies, and the machine side assembly, the power assembly and the grid side assembly are sequentially and electrically connected. The wind power converter according to the exemplary embodiment of the present disclosure adopts a modular structural design to improve installation convenience.

Description

Wind power converter and wind generating set

Technical Field

The present invention relates generally to the field of converters, and more particularly, to a wind power converter and a wind turbine generator set.

Background

A generator in the wind generating set is located at a machine head, a wind power converter is generally arranged on a platform at the bottom of a tower cylinder, a machine side cable is laid along the wall of the tower cylinder, the generator located at the machine head enters the wind power converter located on the platform at the bottom of the tower cylinder, and a grid side cable enters a box transformer substation from the wind power converter.

With the development of wind power generation technology, the capacity of a single machine is continuously increased, and the power of a wind power converter is increased. Accordingly, the power increase inevitably leads to the volume of the wind power converter being larger and larger.

If the size of the wind power converter arranged at the bottom of the tower barrel is large to a certain degree, a layer of platform needs to be designed for the wind power converter independently, and even the diameter of the tower barrel needs to be increased, so that the arrangement and maintenance requirements of the wind power converter can be better met.

With the advent of the fair era, the cost of wind generating sets is continuously reduced. The diameter of the tower and the number of platforms at the bottom of the tower are designed to reduce cost. The diameter of the tower barrel needs to be maintained in a reasonable interval, the diameter cannot be infinitely enlarged along with the increase of the power of the whole machine, and meanwhile, the diameter of the tower barrel needs to be reduced as much as possible in order to achieve the purpose of reducing cost. Simplified design of the tower bottom platforms and reduction of the number thereof are required to reduce design costs, material costs and hoisting costs.

The wind power converter has the advantages that the diameter of the tower barrel is small in size, the number of platforms at the bottom of the tower is reduced, the wind power converter independently occupies one platform layer after the size of the wind power converter is increased, and the requirement conflicts with the requirement that the diameter of the tower barrel is larger.

Meanwhile, a conventional wind power converter can be generally made into a square structure to meet the requirement of integrated transportation, but the design of the square structure enables primary loop devices to be located on the same horizontal plane, electric energy flows and is output after energy conversion is completed on the horizontal plane of the converter, so that the length of energy flow is increased, and waste is caused.

Therefore, the existing wind power converter has at least one of the following problems:

1. the integrated cabinet body structure has poor installation convenience.

2. With the increase of the power of the wind power converter, the volume and the occupied space of the wind power converter are increased, which conflicts with the miniaturization of the tower barrel.

3. The wind power converter independently occupies one layer of platform, so that the number of platforms at the bottom of the tower barrel is increased, the structural design is complex, and the cost is high.

4. Due to the square structural design of the wind power converter, the length of energy flow is long, resource waste is caused, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to provide a modularized wind power converter.

According to an aspect of the present disclosure, a wind power converter includes: a power cabinet accommodating power components; a machine side cabinet disposed above the power cabinet and accommodating a machine side assembly including at least one of a machine side reactor and a machine side breaker; and the grid side cabinet is arranged below the power cabinet and contains a grid side assembly comprising at least one of a grid side reactor and a grid side circuit breaker, wherein the machine side cabinet, the power cabinet and the grid side cabinet are independent cabinet bodies, and the machine side assembly, the power assembly and the grid side assembly are sequentially and electrically connected.

According to the embodiment of the disclosure, the power cabinet can be respectively contacted with the machine side cabinet and the grid side cabinet, and the machine side cabinet, the power cabinet and the grid side cabinet are at least partially overlapped in the height direction of the wind power converter.

According to an embodiment of the present disclosure, the wind power converter may further include a control cabinet accommodating the control module, the control cabinet being independent of the power cabinet, the grid-side cabinet and the machine-side cabinet and being arranged at a side portion of the power cabinet, the control module including a controller for controlling power components within the power cabinet.

According to the embodiment of the disclosure, the wind power converter can further comprise a main control cabinet which is arranged on the outer side of the control cabinet and is arranged in parallel with the power cabinet together with the control cabinet.

According to the embodiment of the disclosure, the machine side cabinet, the power cabinet, the net side cabinet and the control cabinet can be square cabinet bodies, the width of the machine side cabinet and the width of the net side cabinet are both smaller than the width of the power cabinet, the control cabinet is not overlapped with the machine side cabinet and the net side cabinet in the height direction of the wind power converter, and adjacent cabinet bodies in the machine side cabinet, the power cabinet and the net side cabinet are connected through cables.

According to the embodiment of the disclosure, the machine side assembly, the power assembly and the grid side assembly can form a first branch and a second branch which are independent of each other between the input end of the wind power converter and the output end of the wind power converter, and the assemblies on the first branch and the assemblies on the second branch are symmetrically arranged in the corresponding cabinet body.

According to an embodiment of the present disclosure, the machine side assembly may further include a machine side capacitor, the machine side reactor and the machine side capacitor may form a machine side filter, the machine side breaker and the machine side filter may each be mounted on an inner wall of the machine side cabinet, and the machine side breaker may be electrically connected to the machine side filter and located above the machine side filter.

According to an embodiment of the present disclosure, a power assembly may include a power module disposed in front of a capacitive pool, and both mounted on an inner wall of a power cabinet, a capacitive pool, and a brake module disposed on a side wall of the power cabinet.

According to an embodiment of the present disclosure, the grid-side assembly may further include a grid-side capacitor, the grid-side reactor is arranged at a bottom of the grid-side cabinet and electrically connected to the grid-side capacitor, the grid-side capacitor is arranged on a side wall of the grid-side cabinet, and an input terminal of the grid-side reactor is located above the grid-side circuit breaker.

According to another aspect of the disclosure, a wind generating set comprises the wind power converter, the wind power converter is installed on a tower bottom platform, and at least one part of a grid side cabinet is located below the tower bottom platform.

According to the embodiment of the disclosure, the wind power converter comprises three independent cabinets, so that the installation and transportation convenience is improved.

According to the embodiment of the disclosure, the longitudinal layout is realized through the upper, middle and lower three independent cabinets, and the appearance of the tower barrel is kept consistent with the height-reducing appearance of the tower barrel.

Drawings

FIG. 1 is a schematic block circuit diagram showing a wind power converter;

fig. 2 to 4 are schematic diagrams illustrating a cabinet layout of the wind power converter of the present disclosure;

FIG. 5 is a front view schematic diagram showing the layout of the internal components of the wind power converter of the present disclosure;

FIG. 6 is a side view schematic diagram showing the layout of the internal components of the wind power converter of the present disclosure;

FIG. 7 is a schematic view illustrating an installation manner of a conventional wind power converter in a tower;

FIG. 8 is a schematic view illustrating an installation manner of the wind power converter in the tower.

Detailed Description

Preferred embodiments of the present disclosure will now be described in detail with reference to the drawings, wherein like reference numerals refer to like elements throughout.

It is to be noted that, in the present disclosure, for convenience, the expression "side portion", "side surface", or the like indicates a direction toward the first direction or the second direction or a surface in the direction, for convenience, the expression "upper side", "upper portion", "upper surface", or the like indicates a direction toward the third direction or a surface in the direction, and for convenience, the expression "lower side", "lower portion", "upper surface", or the like indicates a direction toward the opposite direction of the third direction or a surface in the direction.

In addition, the expression "located at a side, an upper side, a lower side, or a lower side" conceptually includes a case where the target component is located in the corresponding direction but is not in direct contact with the reference component, and a case where the target component is in direct contact with the reference component in the corresponding direction.

However, these directions are defined for convenience of explanation and illustration, the claims are not particularly limited to the above definitions, and the opposite sense of orientation may be used interchangeably in certain circumstances. For example, the upper or lower side can be interchanged with each other (for example, the machine side cabinet being arranged above the power cabinet can be interchanged with the machine side cabinet being arranged below the power cabinet, i.e. the machine side cabinet can be located below the power cabinet in the height direction of the wind power converter during use).

The wind power converter adopts a modular design, and the integrated wind power converter cabinet is designed into at least three independent cabinet bodies, so that the convenience in installation and transportation is improved.

In addition, it should be noted that recitations in this disclosure relating to numbers (e.g., at least three) are recitations of side-by-side, rather than top-by-side, lists. For example, "at least three" independent cabinets in the present disclosure means that the wind power converter of the present disclosure may include three, four, five … … independent cabinets.

Fig. 1 is a schematic block circuit diagram showing a wind power converter.

As shown in fig. 1, the output power of the generator 100 is output to the machine-side breaker 120 via the cable 110, and the machine-side breaker 120 can switch the output power of the generator on and off as needed. The machine side filter 130 (e.g., machine side DUDT filter) may be electrically connected between the machine side breaker 120 and the machine side module 140, and the machine side module 140 may include a rectifier, although not shown, the machine side filter 130 may include a machine side reactor (machine side inductor) and a machine side filter.

The power output by the machine side module 140 may be stored by the capacitor bank 160, the stored power may be output to the grid side reactor 181 via the grid side module 170, and the grid side module 170 may include an inverter. The grid reactor 181 may form a grid filter with the grid capacitor 180, and the power inverted by the grid module 170 may be output to the grid breaker 190 and then to the box transformer 300 through the grid cable 200.

Although the transmission of electric power/energy between the generator 100 and the box transformer 300 is described above with reference to only one branch, as shown in fig. 1, the wind power converter may further include another branch, the components on the other branch are the same as the above components, and the arrangement manner of the components on the other branch may also be the same as the arrangement manner of the above components, which is not described herein again.

Fig. 2 to 4 are schematic diagrams illustrating a cabinet layout of the wind power converter of the present disclosure.

As shown in fig. 2, the wind power converter of the present disclosure includes three independent cabinets, i.e., a machine side cabinet 10, a power cabinet 20, and a grid side cabinet 30.

The power cabinet 20 may house power components, which may include, for example, at least one of a machine side module 140 and a grid side module 170.

The machine side cabinet 10 may be disposed above the power cabinet 20 and house a machine side assembly, where the machine side assembly may include at least one of a machine side reactor and a machine side breaker 120, that is, a machine side reactor that is the largest in volume and the heaviest in weight among the machine side assemblies may be housed in the machine side cabinet 10.

The grid-side cabinet 30 may be arranged below the power cabinet 20 and house a grid-side assembly, where the grid-side assembly may comprise at least one of a grid-side reactor 181 and a grid-side circuit breaker 190, i.e. the grid-side reactor 181, which is the largest volume and heaviest weight component in the grid-side assembly, may be housed in the grid-side cabinet 30.

The machine side assembly, the power assembly and the net side assembly can be electrically connected in sequence, so that the length of energy flow is reduced, and energy loss and cost are reduced.

Different with the design that becomes two at least cavitys with single cabinet body, this disclosed wind power converter adopts the design of three at least independent cabinet bodies, from this, can improve wind power converter's installation convenience, transportation convenience.

As shown in fig. 2 to 4, the power cabinets 20 may be in contact with the machine-side cabinet 10 and the net-side cabinet 30, respectively. It should be noted here that the power cabinet 20 is in contact with the machine side cabinet 10 and the net side cabinet 30, respectively, and does not mean that there is no bracket assembly and/or fixing assembly between two adjacent cabinets for easy installation, that is, the bracket assembly and the fixing assembly for connection can be regarded as a part of the cabinet.

For example, a bracket may be respectively provided between the top of the power cabinet 20 and the bottom of the machine side cabinet 10 and between the bottom of the power cabinet 20 and the top of the net side cabinet 30. That is, the top of the power cabinet 20 and the bottom of the machine side cabinet 10 and the bottom of the power cabinet 20 and the top of the net side cabinet 30 may be connected to each other by brackets, respectively, for example, the machine side cabinet 10 may be fixed to the top bracket of the power cabinet 20 by fixing members (e.g., bolts and nuts), etc., and the net side cabinet 30 may be fixed to the bottom bracket of the power cabinet 20 by fixing members (e.g., bolts and nuts), etc. Alternatively, the top and bottom brackets may also be considered part of the machine side cabinet 10 and the net side cabinet 30, respectively.

The electrical connection of the components between the rack 10 and the power cabinet 20 may be achieved through cables, for example, the cables extending from the wiring holes at the bottom of the rack 10 may pass through the wiring holes at the top of the power cabinet 20, so as to achieve the electrical connection of the rack 10 and the components in the power cabinet 20 (for example, the electrical connection of the machine side reactor in the rack 10 and the rectifier in the power cabinet 20). Adjacent cabinets in the machine side cabinet (10), the power cabinet (20) and the net side cabinet (30) can be connected through cables.

Similarly, electrical connection of components between the grid-side cabinet 30 and the power cabinet 20 may also be achieved through cables, for example, cables extending from wiring holes in the bottom of the power cabinet 20 may pass through wiring holes in the top of the grid-side cabinet 30, thereby achieving electrical connection of components in the power cabinet 20 and the grid-side cabinet 30 (e.g., electrical connection of inverters in the power cabinet 20 and grid-side reactors in the grid-side cabinet 30). That is, the electrical connection of the components between adjacent cabinets can be achieved through cables rather than copper bars, and therefore, the degree of freedom in arrangement and the convenience in installation of the cabinets can be improved.

As shown in fig. 2 to 4, each of the rack-side cabinet 10, the power cabinet 20, and the grid-side cabinet 30 may be a square cabinet, each having a door that can be opened, and the relevant components may be installed in the rack-side cabinet 10, the power cabinet 20, and the grid-side cabinet 30 through the door. The doors of each of the rack side cabinet 10, the power cabinet 20, and the net side cabinet 30 may face in the same direction, but are not particularly limited.

The machine side cabinet 10, the power cabinet 20 and the grid side cabinet 30 may at least partially overlap in the height direction of the wind power converter.

As shown in fig. 2 and 3, the wind power converter further includes a control cabinet 40 containing a control module, and the control cabinet 40 may be independent from the power cabinet 20, the machine side cabinet 10 and the grid side cabinet 30 and arranged on the side or side surface of the power cabinet.

As shown in fig. 2, the control cabinet 40 may be disposed at the right side of the power cabinet 20, the height of the control cabinet 40 may be the same as that of the power cabinet 20, or the height of the control cabinet 40 may be smaller or larger than that of the power cabinet 20, for example, the entire side surface of the control cabinet 40 may be in contact with only the side surface of the power cabinet 20 without being in contact with the side surface of the machine-side cabinet 10 and the side surface of the net-side cabinet 30.

Alternatively, as shown in fig. 3, the control cabinet 40 may be disposed on the left side of the power cabinet 20, and the number of the control cabinets 40 may be at least one. When the number of the control cabinets 40 is plural, the control cabinets 40 may be arranged around the power cabinets 20. The control cabinet 40 may be used to house a control unit or the like, for example, the control unit may include a controller for controlling the power components within the power cabinet 20.

As shown in fig. 4, the wind power converter further includes a main control cabinet 50 accommodating the control module, the main control cabinet 50 may be independent of the power cabinet 20, the machine side cabinet 10, the grid side cabinet 30 and the control cabinet 40, and may be disposed at a side portion or a side surface of the power cabinet 20, and the main control cabinet 50 may be disposed at an outer side of the control cabinet 40, and may be disposed along with the control cabinet 40 and alongside the power cabinet 20.

As shown in fig. 2 to 4, the machine side cabinet 10, the power cabinet 20, the grid side cabinet 30, the control cabinet 40 and the main control cabinet 50 may be square cabinets, but the present invention is not limited thereto.

The width of each of the rack side cabinet 10 and the grid side cabinet 30 may be less than or equal to the width of the power cabinet 20, for example, as shown in fig. 4, the width of each of the rack side cabinet 10 and the grid side cabinet 30 may be equal to the width of the power cabinet 20.

The control cabinet 40 and the main control cabinet 50 can be not overlapped with the machine side cabinet 10 and the net side cabinet 30 in the height direction of the wind power converter, and the control cabinet 40 and the main control cabinet 50 can be symmetrically arranged at two sides of the power cabinet 20.

The electrical connections between the control cabinet 40 and the components in the power cabinet 20 and the electrical connections between the master cabinet 50 and the components in the power cabinet 20 may also be made via cables. In embodiments of the present disclosure, the copper bars may be used for electrical connection between components in the same cabinet, and the copper bars may be arranged inside the cabinet. And each cabinet body can be cooled by adopting a cooling system, so that the heat dissipation efficiency is higher.

The top of the control cabinet 40 and the top of the main control cabinet 50 may be fixed to a top bracket of the power cabinet 20, and the bottom of the control cabinet 40 and the bottom of the main control cabinet 50 may be fixed to and may be supported by a bottom bracket of the power cabinet 20.

As an example, the control cabinet 40 and the main control cabinet 50 may be formed integrally with the power cabinet 20, that is, components in the control cabinet 40 and the main control cabinet 50 may also be installed in the power cabinet 20 as long as the size of the power cabinet 20 is increased.

A mounting plate may be provided in the control cabinet 40, and all control circuit components may be arranged on the mounting plate, and in addition, terminals, power supplies, and the like may also be mounted on the mounting plate in the control cabinet 40.

Fig. 5 is a schematic front view showing a layout of internal components of the wind power converter of the present disclosure, and fig. 6 is a schematic side view showing a layout of internal components of the wind power converter of the present disclosure.

As shown in fig. 5, the machine side assembly, the power assembly and the grid side assembly form a circuit between the input end of the wind power converter and the output end of the wind power converter, and the circuit may include two branches independent of each other, for example, a first branch and a second branch, but this is merely an example, and the number of branches of the circuit between the input end and the output end of the wind power converter of the present disclosure is not particularly limited.

Preferably, components on the first branch (e.g., main components such as reactors, rectifiers, inverters, filter capacitors, etc.) and components on the second branch may be symmetrically arranged in the respective cabinets, for example, two machine side circuit breakers 120 may be symmetrically arranged on an inner wall of the machine side cabinet 10, and particularly, two machine side circuit breakers 120 may be symmetrically arranged with respect to a center line in a height direction of the machine side cabinet 10.

The first branch will be mainly described below, possibly in connection with some components in the second branch when describing a specific layout.

As shown in fig. 5, the machine side assembly may further include a machine side capacitor, the machine side reactor and the machine side capacitor form a machine side filter 130 (e.g., a machine side DUDT filter), and the machine side breaker 120 and the machine side filter 130 may be mounted on an inner wall of the machine side cabinet 10.

As shown in fig. 6, the machine side breaker 120 may be electrically connected to the machine side filter 130, and the machine side breaker 120 may be located above the machine side filter 130, and this up-down layout corresponds to the flow direction of the energy flow, reducing the length of the energy flow and reducing the loss.

As shown in fig. 5, two machine side breakers 120 and two machine side filters 130 may be symmetrically disposed on the machine side cabinet 10, an upper port of the machine side breaker 120 may be used to connect the machine side cable 110, a lower port of the machine side breaker 120 and an upper port of the machine side filter 130 may be connected by a conductor, a lower port of the machine side filter 130 is connected to the power cabinet 20, and the machine side filter 130 may be installed at the bottom of the machine side cabinet 10.

The power components in the power cabinet 20 may include a power module, which may include at least one of a machine side module 140 and a grid side module 170, a capacitor pool 160, which may be a supporting capacitor for storing energy, and a brake module 150, which may be used to discharge the energy of the capacitor pool 160 when needed, the machine side module 140 may include a rectifier, etc., and the grid side module 170 may include an inverter, etc.

As shown in fig. 5 and 6, the power module (e.g., the machine side module 140 and the grid side module 170) may be disposed in front of the capacitor pool 160, and both the power module and the capacitor pool 160 may be mounted on an inner wall of the power cabinet 20, and the brake modules 150 may be disposed on side walls of the power cabinet 20, for example, two brake modules 150 may be disposed on left and right side walls of the power cabinet 20.

In the present disclosure, the position and number of the brake modules 150 are not particularly limited, and the brake modules 150 may be located at the position of the machine-side module 140, at the position of the net-side module 170, or one brake module 150 may be provided at each of the positions of the machine-side module 140 and the net-side module 170.

In the present disclosure, the number of the capacitive pools 160 on a single branch may be set to one or more as needed.

The machine-side module 140 can be arranged above the grid-side module 170 in the height direction of the wind power converter, and the main power components in the power cabinet 20, such as the machine-side module 140 and the grid-side module 170, are arranged above and below in the height direction, which coincides with the flow direction of the energy flow. Therefore, the length of energy flowing in the wind power converter can be reduced, and the cost can be effectively reduced.

In addition to the grid-side reactor 181 or the grid-side circuit breaker 190, a grid-side capacitor 180, a grid-side filter contactor 310, and the like, which are grid-side components, may be disposed in the grid-side cabinet 30, the grid-side reactor 181 may be disposed at the bottom of the grid-side cabinet 30 and electrically connected to the grid-side capacitor 180, the grid-side capacitor 180 may be disposed on a side wall of the grid-side cabinet 30, and an input terminal of the grid-side reactor 181 may be located above the grid-side circuit breaker 190. In case the size of the grid-side cabinet 30 is large enough, the main body of the grid-side reactor 181 may be located above the grid-side circuit breaker 190.

As shown in fig. 5, two grid-side breakers 190 and two reactors 181 may be symmetrically arranged in the grid-side cabinet 30 in the left-right direction, and specifically, the two grid-side breakers 190 and the two reactors 181 may be symmetrically arranged on the inner wall of the grid-side cabinet 30 with respect to the center line in the height direction of the grid-side cabinet 30.

Fig. 7 is a schematic view illustrating an installation manner of a conventional wind power converter in a tower, and fig. 8 is a schematic view illustrating an installation manner of a wind power converter of the present disclosure in a tower.

Fig. 7 shows a layout of a conventional square wind power converter on a platform at the bottom of a tower, and fig. 8 shows a layout of a modular wind power converter according to the present disclosure on a platform at the bottom of a tower.

The conventional square wind power converter occupies a large space, and needs to occupy one platform independently, and other devices 330 need to be provided with another platform, as shown in fig. 7, the other devices 330 can be arranged above the wind power converter 1, and the conventional wind power converter 1 can be separated from the inner wall of the tower and the tower door 2. Meanwhile, with the change of the power and the volume of the wind power converter, the requirement on the diameter of the tower barrel is increased.

However, as shown in fig. 8, the modular converter of the present disclosure adopts a longitudinal layout, the machine side cabinet 10 is disposed on the top of the power cabinet 20, the machine side cabinet 10 and the power cabinet 20 may be disposed on the same platform, and at least a portion of the net side cabinet 30 may be disposed below the platform at the bottom of the tower and may be fixed by suspension.

Therefore, a platform is not required to be occupied separately. As the size of the power cabinet becomes smaller, other devices 330 may also be arranged on the tower bottom platform, and the other devices 330 and the wind power converter 3 of the present disclosure may be separated from the inner wall of the tower and the tower door 2. Compared with the conventional converter tower bottom layout, one layer of platform is reduced.

The wind power converter can comprise at least three independent cabinets, and the installation and transportation convenience is improved. In addition, vertical layout is realized through three independent cabinets body about the top, middle and bottom, and the appearance of thin and high type with a tower section of thick bamboo keeps unanimous.

The wind power converter reduces the occupied area and the requirement on the diameter of the tower barrel.

The wind power converter and other components are arranged on the same layer of tower drum bottom platform, so that the number of the tower drum bottom platforms is reduced, and the cost is reduced.

The direction of the vertical sequential arrangement of the components of the wind power converter is consistent with the energy flowing direction of the whole system, the length of the energy flowing inside the wind power converter is reduced, and the cost can be effectively reduced.

Although a few exemplary embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments, and that changes may be made in these embodiments, for example, in order to combine features of different embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents. Such variations and modifications are within the scope of the present disclosure.

Claims

1. A wind power converter, comprising:

a power cabinet (20) accommodating power components;

a machine side cabinet (10) provided above the power cabinet (20) and accommodating a machine side assembly including at least one of a machine side reactor and a machine side breaker (120);

a grid-side cabinet (30) disposed below the power cabinet (20) and housing a grid-side assembly including at least one of a grid-side reactor (181) and a grid-side circuit breaker (190),

the machine side cabinet (10), the power cabinet (20) and the network side cabinet (30) are independent cabinets, and the machine side assembly, the power assembly and the network side assembly are electrically connected in sequence.

2. Wind power converter according to claim 1, characterized in that the power cabinet (20) is in contact with the machine side cabinet (10) and the grid side cabinet (30), respectively, and that the machine side cabinet (10), the power cabinet (20), the grid side cabinet (30) at least partially overlap in the height direction of the wind power converter.

3. Wind power converter according to claim 1, characterized in that it further comprises a control cabinet (40) housing a control module, said control cabinet (40) being independent from said power cabinet (20), said grid-side cabinet (30) and said machine-side cabinet (10) and being arranged at the side of said power cabinet (20), said control module comprising a controller for controlling the power components within said power cabinet (20).

4. The wind power converter according to claim 3, further comprising: and the main control cabinet (50) is arranged on the outer side of the control cabinet (40) and is arranged side by side with the power cabinet (20) together with the control cabinet (40).

5. The wind power converter according to claim 3, characterized in that the machine side cabinet (10), the power cabinet (20), the grid side cabinet (30) and the control cabinet (40) are all square cabinet bodies, the width of each of the machine side cabinet (10) and the grid side cabinet (30) is smaller than the width of the power cabinet (20), the control cabinet (40) is not overlapped with the machine side cabinet (10) and the grid side cabinet (30) in the height direction of the wind power converter, and adjacent ones of the machine side cabinet (10), the power cabinet (20) and the grid side cabinet (30) are connected via cables.

6. The wind power converter according to claim 1, characterized in that the machine side assembly, the power assembly and the grid side assembly form a first branch and a second branch independent of each other between the input of the wind power converter and the output of the wind power converter, and the assemblies on the first branch and the assemblies on the second branch are symmetrically arranged in the respective cabinets.

7. Wind power converter according to claim 1 or 6,

the machine side assembly further comprises a machine side reactor forming a machine side filter (130) with the machine side reactor, the machine side breaker (120) and the machine side filter (130) are both mounted on an inner wall of the machine side cabinet (10), and the machine side breaker (120) is electrically connected to the machine side filter (130) and located above the machine side filter (130).

8. Wind power converter according to claim 7, characterized in that the power assembly comprises a power module, a capacitive pool (160) and a braking module (150), the power module being arranged in front of the capacitive pool (160) and the power module and the capacitive pool (160) being mounted on an inner wall of the power cabinet (20), the braking module (150) being arranged on a side wall of the power cabinet (20).

9. Wind power converter according to claim 8, characterized in that the grid side assembly further comprises a grid side capacitor (180), the grid side reactor (181) is arranged at the bottom of the grid side cabinet (30) and electrically connected to the grid side capacitor (180), the grid side capacitor (180) is arranged on a side wall of the grid side cabinet (30), and the input terminal of the grid side reactor (181) is located above the grid side circuit breaker (190).

10. Wind park according to any one of claims 1 to 9, comprising a wind power converter according to any one of claims 1 to 9, which is mounted on a tower bottom platform, and at least a part of the grid-side cabinets (30) are located below the tower bottom platform.