Full-power wind power converter cabinet

Abstract

The utility model provides a full-power wind power converter cabinet, a plurality of power cabinets and a grid-connected control cabinet are integrated in a cabinet, the grid-connected control cabinet is arranged in the middle of the cabinet, and the power cabinets are arranged on two sides of the cabinet and are composed of a plurality of mutually symmetrical single power cabinets. The power cabinet is internally connected with a grid-side inductance module, a capacitor pool module, a power module and a driving circuit thereof, a CP module, a power module control board and a grid-side lightning protection assembly; a machine-side circuit breaker module, a network-side circuit breaker module, a machine-side inductor module, an AC filter capacitor module, a main controller assembly, a machine-side lightning protection assembly, an RC absorption assembly and a UPS are connected in the grid-connected control cabinet. The integration level is improved by optimizing the structural layout, the heat dissipation performance is improved by arranging a power component independent heat dissipation device, and the single-machine power density is improved; the use temperature of parts is reduced and the service life is prolonged; through the modular design of internal components, the upper machine type and the lower machine type use the same cabinet body to realize quick switching of main circuit interfaces, and the material cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of cabinets, and in particular relates to a full-power wind power converter cabinet. Background Art

[0002] Wind turbine converters are the core equipment for power conversion in wind power generation. As wind turbines develop towards high-power models, the power density of wind turbine converters is required to continue to increase. However, the space in the cabin is limited, and the integration of single converter cabinets needs to be improved to reduce the volume. However, the high integration leads to limited heat dissipation conditions for power devices inside the cabinet, which restricts the realization of higher power. Heat dissipation design is a key technology related to the reliable and stable operation of devices. In addition, with the continuous development and maturity of the wind power market, material and maintenance costs are also becoming more and more demanding. Modular design can unify materials, improve product reliability, and reduce development and operation and maintenance material costs.

[0003] The current full-power converter cabinet structure layout has low space utilization, poor device heat dissipation conditions, and it is difficult to further improve the power density in high-power converters; there are few modular designs, and there are many types of materials with different interfaces for top-mounted and bottom-mounted models, resulting in high material costs; the device heat dissipation conditions are poor, which affects the service life.

[0004] Therefore, how to further increase power density, improve device heat dissipation capability, enhance reliability and maintainability, and reduce costs are issues that those skilled in the art urgently need to address. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a full-power wind power converter cabinet to alleviate the technical problems of low structural layout space utilization, poor device heat dissipation conditions, and difficulty in further improving power density.

[0006] In a first aspect, an embodiment of the present invention provides a full-power wind turbine converter cabinet, comprising a cabinet, wherein the cabinet integrates multiple power cabinets and a grid-connected control cabinet, wherein the grid-connected control cabinet is located in the middle of the cabinet, and the power cabinets are located on both sides of the cabinet and are composed of multiple mutually symmetrical power cabinets;

[0007] The power cabinet is internally connected to the grid-side inductor module, capacitor pool module, power module and its drive circuit, CP module, power module control board, and grid-side lightning protection component;

[0008] The grid-side inductor module is arranged at the bottom of the power cabinet, including a grid-side inductor and a heat exchange device arranged on the top of the grid-side inductor. The grid-side inductor is arranged inside the power cabinet through a grid-side inductor connecting conductor, and a main fuse is arranged on the grid-side inductor connecting conductor;

[0009] The capacitor pool module is arranged in the middle side of the power cabinet, and includes a capacitor pool, a capacitor pool air cavity, and a heat exchange device arranged at the bottom of the capacitor pool;

[0010] The power modules are arranged on both sides of the capacitor pool, including a machine-side power module and a grid-side power module;

[0011] The CP module and the power module control board are arranged on the upper side of the power cabinet. The CP module includes the CP module and the CP resistor. The power module control board is used for driving and controlling the power module and the power devices inside the CP module.

[0012] The grid-connected control cabinet is internally connected with a machine-side circuit breaker module, a grid-side circuit breaker module, a machine-side inductor module, an AC filter capacitor module, a main controller component, a machine-side lightning protection component, an RC absorption component and a UPS;

[0013] The generator-side circuit breaker module is arranged on the upper right side of the grid-connected control cabinet, including the generator-side circuit breaker and the outgoing terminal; the grid-side circuit breaker module is arranged on the lower left side of the grid-connected control cabinet, including the grid-side circuit breaker and the outgoing terminal;

[0014] The machine-side inductor module is arranged on the right middle side of the grid-connected control cabinet, and includes a machine-side inductor and a heat exchange device arranged on the top of the machine-side inductor;

[0015] The AC filter capacitor module is arranged on the lower right side of the grid-connected control cabinet, and includes a first AC filter capacitor component, a second AC filter capacitor component and a symmetrically arranged AC filter capacitor fuse component;

[0016] The RC absorption component is arranged on the upper left side of the grid-connected control cabinet, and includes an RC absorption circuit;

[0017] The main controller component and the UPS are symmetrically arranged on both sides of the machine-side inductor module, and the main controller component includes a main control circuit;

[0018] The grid-side power module is electrically connected to the grid-side inductor, and the generator-side power module is electrically connected to the generator-side inductor. The grid-side circuit breaker and the generator-side circuit breaker are electrically connected to each other via electrical connection conductors.

[0019] The embodiments of the present invention bring the following beneficial effects:

[0020] The utility model improves the integration by optimizing the structural layout, improves the heat dissipation performance and increases the power density of a single machine by setting an independent heat dissipation device for the power components; reduces the operating temperature of the components and increases the service life; and through the modular design of internal components, the top-mounted and bottom-mounted models use the same cabinet to achieve rapid switching of the main circuit interface, reducing material costs.

[0021] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The front internal layout diagram of a full-power wind power converter cabinet provided by an embodiment of the present utility model;

[0024] Figure 2 The internal layout diagram of the back of a full-power wind power converter cabinet provided by an embodiment of the present utility model;

[0025] Figure 3 A top structural diagram of a full-power wind power converter cabinet provided in an embodiment of the present utility model;

[0026] Figure 4 The internal layout diagram of the power cabinet provided in the embodiment of the present utility model;

[0027] Figure 5 The internal layout diagram of the top-mounted grid-connected control cabinet provided in the embodiment of the utility model;

[0028] Figure 6 This is a diagram of the internal layout of a bottom-mounted grid-connected control cabinet provided in an embodiment of the present utility model.

[0029] Diagram: 1-cabinet; 2-power cabinet 1; 3-power cabinet 2; 4-power cabinet 3; 5-power cabinet 4; 6-grid-connected control cabinet;

[0030] Power cabinet components: 201 - grid-side inductor; 202 - grid-side inductor heat exchanger; 203 - grid-side inductor fan assembly; 204 - cabinet direct-connected hard pipe assembly; 205 - cooling water pipeline assembly; 206 - connecting conductor; 207 - power module; 208 - CP resistor; 209 - module control board; 210 - main fuse; 211 - capacitor pool heat exchanger; 212 - capacitor pool fan assembly; 213 - flexible hose; 214 - grid-side lightning protection assembly; 215 - capacitor pool; 216 - capacitor pool air cavity; 217 - grid-side inductor connecting conductor; 218 - CP module;

[0031] Grid-connected control cabinet components: 601-machine-side circuit breaker; 606-machine-side inductor heat exchanger; 603-machine-side inductor fan assembly; 604-machine-side inductor; 605-main controller assembly; 606-AC filter capacitor fuse assembly; 607-user power supply assembly; 608-communication and control interface; 609-grid-side outgoing line; 610-machine-side outgoing line; 611-circuit breaker heat exchanger; 612-circuit breaker fan assembly; 613-first AC filter capacitor assembly; 614-second AC filter capacitor assembly; 615-grid-side circuit breaker; 616-UPS; 617-machine-side lightning protection assembly; 618-RC absorption assembly; 619-mounting rail. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] To facilitate understanding of this embodiment, a full-power wind power converter cabinet disclosed in an embodiment of the present utility model is first introduced in detail, including a cabinet, such as Figures 1-6 As shown, the cabinet integrates multiple power cabinets and one grid-connected control cabinet. The grid-connected control cabinet is located in the middle of the cabinet, integrating the grid-connected cabinet and the control cabinet. The power cabinets are located on both sides of the cabinet and consist of multiple symmetrical power cabinets.

[0034] The power cabinet is internally connected to the grid-side inductor module, capacitor pool module, power module and its drive circuit, CP module, power module control board 209, and grid-side lightning protection component 214; the details are as follows:

[0035] The grid-side inductor module is arranged at the bottom of the power cabinet, including a grid-side inductor 201 and a heat exchange device arranged on the top of the grid-side inductor. The grid-side inductor 201 is arranged inside the power cabinet through a grid-side inductor connecting conductor 206, and a main fuse 210 is arranged on the grid-side inductor connecting conductor 206; the grid-side lightning protection component 214 is arranged on one side of the grid-side inductor module;

[0036] Furthermore, the independent heat exchange device provided on the top of the grid-side inductor includes a grid-side inductor heat exchanger 202 and a grid-side inductor fan assembly 203 , which is used to absorb air through the centrifugal fan and dissipate heat through convection through the grid-side inductor heat exchanger 202 .

[0037] The capacitor pool module is arranged in the middle side of the power cabinet, and includes a capacitor pool 215, a capacitor pool air cavity 216, and a heat exchange device arranged at the bottom of the capacitor pool;

[0038] Furthermore, the independent heat exchange device at the bottom of the capacitor pool includes a capacitor pool heat exchanger 211 and a capacitor pool fan assembly 212. The power cabinet capacitor pools 215 on both sides are placed back to back to form a ventilation cavity in the middle, namely the capacitor pool wind cavity 216. Ventilation holes are provided at the bottom of the capacitor pool 215 mounting bracket. Cooling air can be evenly inhaled from the gaps between each capacitor, and then pass through the capacitor pool wind cavity 216 and the capacitor pool heat exchanger 211 for heat dissipation, thereby reducing the operating temperature of the capacitor and improving its service life.

[0039] The power modules are arranged on both sides of the capacitor pool 215, including a machine-side power module and a grid-side power module;

[0040] The CP module and the power module control board are arranged on the upper side of the power cabinet. The CP module includes a CP module 218 and a CP resistor 208. The power module control board is mainly used for driving and controlling the power devices inside the power module 207 and the CP module 218.

[0041] The grid-connected control cabinet 6 is internally connected with the machine-side circuit breaker module, the grid-side circuit breaker module, the machine-side inductor module, the AC filter capacitor module, the main controller component 605, the machine-side lightning protection component 617, the RC absorption component 618 and the UPS 616. The details are as follows:

[0042] The generator-side circuit breaker module is arranged on the upper right side of the grid-connected control cabinet 6, including the generator-side circuit breaker 601 and the outgoing terminal; the grid-side circuit breaker module is arranged on the lower left side of the grid-connected control cabinet 6, including the grid-side circuit breaker 615 and the outgoing terminal;

[0043] Furthermore, the machine-side circuit breakers 601 and grid-side circuit breakers 615, along with their electrical connection conductors, are designed as modular components, allowing for complete assembly and disassembly. Mounting rails 619 are located on both sides of the cabinet to facilitate operation. The installation positions of the machine-side circuit breakers 601 and grid-side circuit breakers 615 can be flexibly adjusted to suit top-mounted and bottom-mounted models, enabling rapid switching of the main circuit interfaces between the two models using the same cabinet. For bottom-mounted models, the machine-side circuit breakers 601 and grid-side circuit breakers 615 are installed at the bottom of the grid-connected control cabinet. This position adjustment effectively reduces the length of the outgoing conductors, lowering material costs.

[0044] Furthermore, the independent heat dissipation devices provided for the machine-side circuit breaker 601 and the grid-side circuit breaker 615 each include a circuit breaker fan assembly 612 and a circuit breaker heat exchanger 611 .

[0045] The machine-side inductor module is arranged on the right middle side of the grid-connected control cabinet 6, and includes a machine-side inductor 604 and a heat exchange device arranged on the top of the machine-side inductor 604;

[0046] Furthermore, the independent heat exchange device provided on the top of the machine-side inductor 604 includes a machine-side inductor fan assembly 603 and a machine-side inductor heat exchanger 602 .

[0047] The AC filter capacitor module is arranged at the lower right side of the grid-connected control cabinet 6, and includes a first AC filter capacitor component 613, a second AC filter capacitor component 614 and a symmetrically arranged AC filter capacitor fuse component 606;

[0048] Furthermore, the AC filter capacitor module is provided with an independent heat dissipation device, which can reduce the operating temperature of the capacitor and increase the service life.

[0049] The RC absorption component 618 is arranged on the upper left side of the grid-connected control cabinet 6 and includes an RC absorption circuit; the generator-side lightning protection component 617 is arranged at the lower end of the RC absorption component 618.

[0050] The main controller component 605 and UPS 616 are symmetrically arranged on both sides of the machine-side inductor module. The main controller component 605 includes a main control circuit;

[0051] Furthermore, the grid-side power module is electrically connected to the grid-side inductor 201 , and the generator-side power module is electrically connected to the generator-side inductor 604 . The grid-side circuit breaker 615 and the generator-side circuit breaker 601 are electrically connected via electrical connection conductors.

[0052] Furthermore, the grid-connected control cabinet is also provided with a communication and control interface 608 and a user power supply component 607. The communication and control interface 608 is arranged at the lower right side of the grid-connected control cabinet, and the user power supply component 607 is arranged above the communication and control interface 608, and AC filter capacitor fuse components 606 are arranged on both sides.

[0053] Furthermore, the full-power converter cabinet adopts liquid cooling to dissipate heat, and the power module dissipates heat by passing cooling liquid through the water-cooling plate.

[0054] Furthermore, the power module and capacitor pool module in the power cabinet are directly assembled into a module assembly. The power devices and capacitors are connected through a low-inductance busbar. Hierarchical connection ports are set on both sides of the busbar. After being assembled into the cabinet, low-inductance overlapping is achieved to form a capacitor pool, which effectively reduces the size of the stacked busbar, reduces the difficulty of production, and reduces the cost. At the same time, the module assembly is more convenient to install and maintain.

[0055] Furthermore, a cooling pipe assembly 205 passing through the cabinet is provided in the middle of the converter cabinet. The cooling pipes are respectively passed through by two groups of water inlet pipes and two groups of water outlet pipes in parallel, and are converged outside the cabinet to form a single group of water pipe interfaces. The power modules and inductor and capacitor pool heat exchangers on both sides of the cabinet are connected through nearby pipes, which reduces the length of the hose and can effectively reduce costs.

[0056] Furthermore, the water inlet and outlet pipes share a secondary pipeline system. The primary, or main, pipeline is a hard pipe, directly connected to the hard pipe assembly 204 inside the cabinet. Two inlet and outlet water ports are provided outside the cabinet. Inside the power cabinet, the inlet and outlet pipes each branch into two branches, extending to the other end of the cabinet. The secondary pipeline is a flexible hose 213, which connects components such as the power module water cooling plate, inductor, capacitor pool, and circuit breaker to the hard pipe via a heat exchanger.

[0057] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full-power wind power converter cabinet, comprising a cabinet, characterized in that: The cabinet is integrated with multiple power cabinets and a grid-connected control cabinet, the grid-connected control cabinet is in the middle of the cabinet, and the power cabinets are located on both sides of the cabinet and are composed of multiple mutually symmetrical power cabinets; The power cabinet is internally connected to the grid-side inductor module, capacitor pool module, power module and its drive circuit, CP module, power module control board, and grid-side lightning protection component; The grid-side inductor module is arranged at the bottom of the power cabinet, including a grid-side inductor and a heat exchange device arranged on the top of the grid-side inductor. The grid-side inductor is arranged inside the power cabinet through a grid-side inductor connecting conductor, and a main fuse is arranged on the grid-side inductor connecting conductor; The capacitor pool module is arranged in the middle side of the power cabinet, and includes a capacitor pool, a capacitor pool air cavity, and a heat exchange device arranged at the bottom of the capacitor pool; The power modules are arranged on both sides of the capacitor pool, including a machine-side power module and a grid-side power module; The CP module and the power module control board are arranged on the upper side of the power cabinet. The CP module includes a CP module and a CP resistor. The power module control board is used for driving and controlling the power module and the power devices inside the CP module. The grid-connected control cabinet is internally connected with a machine-side circuit breaker module, a grid-side circuit breaker module, a machine-side inductor module, an AC filter capacitor module, a main controller component, a machine-side lightning protection component, an RC absorption component and a UPS; The generator-side circuit breaker module is arranged on the upper right side of the grid-connected control cabinet, including the generator-side circuit breaker and the outgoing terminal; the grid-side circuit breaker module is arranged on the lower left side of the grid-connected control cabinet, including the grid-side circuit breaker and the outgoing terminal; The machine-side inductor module is arranged on the right middle side of the grid-connected control cabinet, and includes a machine-side inductor and a heat exchange device arranged on the top of the machine-side inductor; The AC filter capacitor module is arranged on the lower right side of the grid-connected control cabinet, and includes a first AC filter capacitor component, a second AC filter capacitor component and a symmetrically arranged AC filter capacitor fuse component; The RC absorption component is arranged on the upper left side of the grid-connected control cabinet, and includes an RC absorption circuit; The main controller component and the UPS are symmetrically arranged on both sides of the machine-side inductor module, and the main controller component includes a main control circuit; The grid-side power module is electrically connected to the grid-side inductor, and the generator-side power module is electrically connected to the generator-side inductor; the grid-side circuit breaker and the generator-side circuit breaker are electrically connected to each other via electrical connection conductors. The heat exchange devices are all independently arranged and include a fan assembly and a heat exchanger.

2. The full-power wind power converter cabinet according to claim 1, characterized in that: The components of the power module and the capacitor module are connected via a low-inductance busbar, and hierarchical connection ports are provided on both sides of the low-inductance busbar.

3. The full-power wind power converter cabinet according to claim 1, characterized in that: The capacitor pools on both sides of the power cabinet are placed back to back, and ventilation holes are opened at the bottom of the capacitor pool mounting bracket.

4. The full-power wind power converter cabinet according to claim 1, characterized in that: Mounting guide rails are provided on both sides of the cabinet.

5. The full-power wind power converter cabinet according to claim 1, characterized in that: The grid-connected control cabinet is divided into upper-mounted and lower-mounted models. The installation positions of the grid-side circuit breakers and the machine-side circuit breakers are adjusted according to the interface positions of the models.

6. The full-power wind power converter cabinet according to claim 1, characterized in that: A cooling pipe assembly passing through the cabinet body is provided in the middle of the cabinet. The cooling pipe includes two groups of water inlet pipes and two groups of water outlet pipes, which are respectively connected in parallel and pass through, and converge outside the cabinet to form a single group of water pipe interfaces.

7. The full-power wind power converter cabinet according to claim 6, characterized in that: The water inlet and outlet pipes have two secondary pipes. The primary pipe is a hard pipe with two water inlet and outlet interfaces outside the cabinet. Inside the power cabinet, the water inlet and outlet pipes are divided into two branches, and the paths cover the other end of the cabinet. The secondary pipeline is a soft pipe, and the power module, inductor, capacitor pool, and circuit breaker are connected to the hard pipeline through the soft pipe via a heat exchanger.

8. The full-power wind power converter cabinet according to claim 1, characterized in that: The grid-connected control cabinet is also provided with a communication and control interface and a user power supply component.

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