High-efficiency three-level air-cooled doubly-fed motor driving device

Abstract

The utility model discloses a high-efficiency three-level air-cooled doubly-fed motor driving device, which comprises an installation ring, a plurality of installation blocks are fixedly installed at the lower end part of the side wall of the installation ring at equal intervals, and a heat conduction assembly used for heat dissipation of a driver PCB is arranged in the installation ring; the upper end of the mounting ring is detachably connected with a heat dissipation cover plate, a ventilation opening is formed in the upper end of the heat dissipation cover plate, and a heat dissipation assembly is arranged on the heat dissipation cover plate. According to the utility model, rapid conduction of heat generated by the driver PCB is realized through the heat conduction disc and the heat conduction column which are made of high-heat-conductivity materials. The heat dissipation assembly achieves effective heat dissipation and protection through combination of heat dissipation fins, a heat dissipation fan and a dustproof net. According to the design, the heat dissipation efficiency is improved, the driver assembly is protected from being damaged by dust and other impurities, and the service life of the driver is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of motor drive technology, and in particular to a high-efficiency three-level air-cooled doubly fed motor drive device. Background Technology

[0002] With the rapid development of power electronics technology, doubly-fed induction generators (DFIGs) have been widely used in wind power generation, variable frequency speed control, and other fields. However, with the increase in motor capacity and the increasing complexity of the operating environment, the heat dissipation problem of DFIGs has become increasingly prominent. Traditional heat dissipation methods often suffer from low heat dissipation efficiency, uneven heat dissipation, and difficult maintenance, and cannot meet the high heat dissipation performance requirements of modern DFIGs.

[0003] To improve the heat dissipation performance of doubly-fed induction generators (DFIGs), researchers have begun exploring new heat dissipation technologies and methods. Among these, air-cooling technology has attracted considerable attention due to its advantages such as simple structure, high heat dissipation efficiency, and convenient maintenance. Air-cooling technology effectively cools the motor by utilizing airflow to remove heat from its interior. However, traditional air-cooling technologies often suffer from problems such as poor airflow and limited heat dissipation area, which restricts the improvement of their heat dissipation performance. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency three-level air-cooled doubly-fed motor drive device. This device utilizes a heat-conducting plate and heat-conducting pillars made of high thermal conductivity materials to achieve rapid heat conduction from the driver's PCB board. The heat dissipation assembly, through a combination of heat sink fins, a cooling fan, and a dust filter, effectively dissipates and protects against heat. This design not only improves heat dissipation efficiency but also protects the driver components from dust and other impurities, extending the driver's lifespan.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency three-level air-cooled doubly fed motor drive device includes a mounting ring, wherein multiple mounting blocks are fixedly installed at equal intervals on the lower end of the side wall of the mounting ring, and a heat-conducting component for heat dissipation of the driver PCB board is provided inside the mounting ring.

[0007] The upper end of the mounting ring is detachably connected to a heat dissipation cover plate, the upper end of which has a ventilation opening, and a heat dissipation component is provided on the heat dissipation cover plate.

[0008] Preferably, the heat-conducting component includes a heat-conducting column disposed inside the mounting ring, a heat-conducting plate that is in contact with the driver PCB board is fixedly installed at the lower end of the heat-conducting column, and multiple heat dissipation fins are fixedly installed at equal intervals on the outer side of the heat-conducting column.

[0009] Preferably, the outer side of the mounting ring has multiple arc-shaped openings at equal intervals, and the heat dissipation fins are located inside the arc-shaped openings.

[0010] Preferably, the heat dissipation cover is detachably connected to the mounting ring by a plurality of fixing screws.

[0011] Preferably, the upper end of the mounting ring is provided with a plurality of screw holes that are adapted to the fixing screws at equal intervals.

[0012] Preferably, the heat dissipation assembly includes a dustproof mesh fixedly installed on the inside of the vent, and a cooling fan is fixedly installed on the inner top of the heat dissipation cover, the cooling fan corresponding to the vent.

[0013] This utility model has the following beneficial effects:

[0014] By combining a heat-conducting plate and heat-conducting pillars made of high thermal conductivity materials, rapid and uniform heat conduction of the heat generated by the driver PCB board is achieved, significantly improving heat dissipation efficiency.

[0015] The addition of heat dissipation fins further increases the heat dissipation area. Combined with the forced air cooling effect of the cooling fan, heat can be quickly dissipated from the inside of the drive unit, ensuring the temperature stability of the driver under long-term high-load operation, reducing the failure rate caused by overheating, and improving the reliability and stability of the entire drive system.

[0016] The effective operation of the heat dissipation system reduces the internal temperature of the driver, thereby reducing the risk of component aging, performance degradation, or even damage caused by high temperatures and extending the lifespan of the driver.

[0017] The dust filter prevents dust and other impurities from entering the cooling system, protecting key components such as the cooling fan and heat sink fins from damage and ensuring the continuous and stable operation of the cooling system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a high-efficiency three-level air-cooled doubly-fed motor drive device proposed in this utility model;

[0019] Figure 2 This is a side view of a high-efficiency three-level air-cooled doubly-fed motor drive device proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of a high-efficiency three-level air-cooled doubly fed motor drive device proposed in this utility model.

[0021] In the diagram: 1. Mounting ring, 2. Arc-shaped opening, 3. Heat dissipation fins, 4. Mounting block, 5. Fixing screw, 6. Heat dissipation cover plate, 7. Vent, 8. Heat conduction plate, 9. Heat conduction column. Detailed Implementation

[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be arbitrarily changed for a high-efficiency three-level air-cooled doubly fed motor drive device, and its component layout may also be more complex.

[0024] Some exemplary embodiments of the present invention have been described for illustrative purposes. It should be understood that the present invention may be implemented in other ways not specifically shown in the accompanying drawings.

[0025] Reference Figures 1-3 A high-efficiency three-level air-cooled doubly fed motor drive device includes a mounting ring 1. Multiple mounting blocks 4 are fixedly installed at equal intervals on the lower end of the side wall of the mounting ring 1. The mounting blocks 4 cooperate with mounting bolts to install the mounting ring 1 at an appropriate position on the driver PCB board.

[0026] The mounting ring 1 contains a heat-conducting assembly for heat dissipation of the driver PCB board. This assembly includes heat-conducting pillars 9, which serve as the critical path for heat conduction. A heat-conducting plate 8, made of a high thermal conductivity material, is fixedly mounted at the lower end of each pillar 9, adhering to the driver PCB board. This plate ensures rapid and uniform heat transfer to the connected pillars 9. Multiple heat dissipation fins 3 are fixedly mounted at equal intervals on the outer side of each pillar 9. Multiple arc-shaped openings 2 are equally spaced on the outer side of the mounting ring 1, with the heat dissipation fins 3 located inside these openings, increasing the heat dissipation area and improving efficiency. These cleverly positioned heat dissipation fins 3 within the equally spaced arc-shaped openings 2 on the outer side of the mounting ring 1 facilitate airflow and further enhance heat dissipation.

[0027] The upper end of the mounting ring 1 is detachably connected to a heat dissipation cover plate 6. The heat dissipation cover plate 6 is detachably connected to the mounting ring 1 by multiple fixing screws 5. The upper end of the mounting ring 1 is provided with multiple screw holes that are compatible with the fixing screws 5 at equal intervals. The upper end of the heat dissipation cover plate 6 is provided with a ventilation opening 7. The heat dissipation cover plate 6 is provided with a heat dissipation component, which includes a dustproof mesh fixedly installed on the inner side of the ventilation opening 7, which effectively blocks dust and other impurities from entering the heat dissipation system and protects the internal components from damage. A cooling fan (not shown in the figure) is fixedly installed on the inner top of the heat dissipation cover plate 6. The cooling fan corresponds to the ventilation opening 7 and is responsible for driving airflow to accelerate the cooling of the heat dissipation fins 3 and the heat conduction components.

[0028] Working principle:

[0029] During operation, the heat generated by the driver PCB board is rapidly conducted to the heat conduction pillar 9 through the tightly fitted heat conduction plate 8. The design of the heat dissipation fins 3 effectively increases the heat dissipation area and improves the heat exchange efficiency. At the same time, the design of the arc-shaped opening 2 ensures air circulation, allowing the heat dissipation fins 3 to fully exchange heat with the outside air, thereby effectively dissipating the heat generated by the driver PCB board.

[0030] To further enhance heat dissipation, vent 7 provides a channel for airflow. Inside the heat dissipation cover 6, the cooling fan generates airflow by rotating, forcing air through vent 7 into the device and flowing over the heat dissipation fins 3, carrying away heat from the fins. Simultaneously, the dust filter above the cooling fan effectively prevents dust and other impurities from entering the device, ensuring the long-term stable operation of the heat dissipation components.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high efficiency three-level line-start double-fed motor drive, characterized by: The mounting ring (1) is provided with a plurality of mounting blocks (4) equidistantly fixed at the lower end of the side wall, and a heat conduction assembly is arranged inside the mounting ring (1) for heat dissipation of the driver PCB board; The upper end of the mounting ring (1) is detachably connected with a heat dissipation cover plate (6), the upper end of the heat dissipation cover plate (6) is provided with a ventilation opening (7), and the heat dissipation cover plate (6) is provided with a heat dissipation assembly.

2. A high efficiency three-level line-start double-fed motor drive according to claim 1, characterized in that The heat conduction assembly comprises a heat conduction column (9) arranged inside the mounting ring (1), the lower end of the heat conduction column (9) is fixedly provided with a heat conduction disc (8) abutting against the driver PCB board, and the outer side of the heat conduction column (9) is equidistantly fixedly provided with a plurality of heat dissipation fins (3).

3. A high efficiency three-level line-start double-fed motor drive according to claim 2, characterised in that, The outer side of the mounting ring (1) is equidistantly provided with a plurality of arc-shaped openings (2), and the heat dissipation fins (3) are located inside the arc-shaped openings (2).

4. A high efficiency three-level line-start double-fed motor drive according to claim 1, characterized in that, The heat dissipation cover plate (6) is detachably connected with the mounting ring (1) through a plurality of fixing screws (5).

5. A high efficiency three-level line-start double-fed motor drive according to claim 4, characterised in that, The upper end of the mounting ring (1) is equidistantly provided with a plurality of screw holes matched with the fixing screws (5).

6. A high efficiency three-level line-start double-fed motor drive according to claim 1, characterized in that, The heat dissipation assembly comprises a dustproof net fixedly arranged on the inner side of the ventilation opening (7), the inner top of the heat dissipation cover plate (6) is fixedly provided with a heat dissipation fan, and the heat dissipation fan corresponds to the ventilation opening (7).

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