A narrow and long high power density frequency converter design

Abstract

The utility model provides a narrow long type high power density frequency changer design relates to frequency changer technical field, including panel, the inside of panel is provided with direct current reactor, the side of direct current reactor is provided with drive board, the inside of panel is provided with binding post, the inside of panel is provided with expansion card control panel, the utility model discloses a narrow long shape modularization design is adopted to panel, and power unit, direct current bus, reactor vertical arrangement is suitable for the side or back of cabinet installs, saves the space, and it is convenient to adapt to such as the narrow long installation space in industrial control cabinet.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to a narrow and long high power density frequency converter design. Background Technology

[0002] In modern industrial automation, new energy, and many other fields, frequency converters are widely used as key devices for controlling motor speed and operating status. With the trend of miniaturization and integration of industrial equipment, equipment is gradually evolving towards miniaturization and integration, which places increasingly higher demands on the space adaptability and power density of frequency converters.

[0003] Existing frequency converters typically adopt a conventional square or near-square structural design, which has shortcomings in space utilization, resulting in a large footprint, difficulty in increasing power density, and inability to adapt well to narrow and long installation spaces, thus causing inconvenience in use. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing frequency converters typically employ a conventional square or near-square structural design, which has limitations in space utilization, resulting in large space occupation, difficulty in increasing power density, and inability to adapt well to narrow and long installation spaces, thus causing inconvenience in use. Therefore, this invention proposes a narrow and long high power density frequency converter design.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a narrow and long high power density frequency converter design, including a panel, a DC reactor is provided inside the panel, a drive board is provided on the side of the DC reactor, wiring terminals are provided inside the panel, and an expansion card control board is provided inside the panel.

[0006] Preferably, a power board is provided inside the panel, a heat sink is provided at the bottom of the drive board, and an electrolytic capacitor is provided on the side of the heat sink.

[0007] Preferably, a cable outlet plate is installed at one end of the panel, and adjustable fans are symmetrically arranged at one end of the panel.

[0008] Preferably, a fixed bracket is installed on the side of the panel, and an operation panel is provided on the top of the panel.

[0009] Preferably, the power supply board is located below the DC reactor.

[0010] Preferably, the expansion card control board is located on the side of the driver board, and the heat sink is located below the expansion card control board.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the panel adopts a narrow and long modular design, with the power unit, DC bus and reactor arranged longitudinally, which is suitable for side mounting or back mounting in the cabinet, saving space and making it easy to adapt to narrow and long installation spaces such as industrial control cabinets.

[0013] 2. In this utility model, a DC reactor is integrated on the input side, and a flat winding or ferrite core is used to reduce the size and eddy current loss. SiC / GaN power devices are used, and the switching frequency is increased to more than 50kHz. The size of passive components is reduced, and the multi-layer PCB stacking layout increases the power density to meet the requirements of miniaturization and high power of the equipment. Attached Figure Description

[0014] Figure 1 This utility model presents a three-dimensional structural diagram of a narrow and long high power density frequency converter design;

[0015] Figure 2 This invention presents a schematic diagram of the internal structure of a narrow and long high-power-density frequency converter.

[0016] Legend: 1. Front panel; 2. Outlet board; 3. Adjustable fan; 4. Operation panel; 5. Mounting bracket; 6. DC reactor; 7. Driver board; 8. Terminal block; 9. Electrolytic capacitor; 10. Heat sink; 11. Expansion card control board; 12. Power board. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1: As Figures 1-2As shown, this utility model provides a technical solution: a narrow and long high power density frequency converter design, including a panel 1, a DC reactor 6 is arranged inside the panel 1, a drive board 7 is arranged on the side of the DC reactor 6, a wiring terminal 8 is arranged inside the panel 1, an expansion card control board 11 is arranged inside the panel 1, a power board 12 is arranged inside the panel 1, a heat sink 10 is arranged at the bottom of the drive board 7, an electrolytic capacitor 9 is arranged on the side of the heat sink 10, a cable outlet board 2 is installed at one end of the panel 1, an adjustable fan 3 is symmetrically arranged at one end of the panel 1, a fixed bracket 5 is installed on the side of the panel 1, an operation panel 4 is arranged at the top of the panel 1, the power board 12 is arranged below the DC reactor 6, the expansion card control board 11 is arranged on the side of the drive board 7, and the heat sink 10 is arranged below the expansion card control board 11.

[0020] In this embodiment, panel 1 adopts a narrow and elongated modular design, with power units, DC buses, and reactors arranged vertically, suitable for side or back mounting in a cabinet, saving space and facilitating adaptation to narrow and long installation spaces such as industrial control cabinets; DC reactor 6 is integrated on the input side, using flat windings or ferrite cores to reduce volume and eddy current losses, using SiC / GaN power devices, increasing the switching frequency to over 50kHz, reducing the size of passive components, and employing a multi-layer PCB stacked layout to increase power density and meet the requirements of equipment miniaturization and high power; the busbar and heat sink 10 adopt an integrated design to enhance heat dissipation, ensure thermal management during high-power operation of the frequency converter, and improve equipment stability and service life; the high-frequency, low-inductance design at the μH level suppresses current spikes caused by diode rectification, reduces input harmonics THD to <5%, the magnetic core has an open air gap to prevent saturation, and is fixed with epoxy resin potting to reduce vibration and noise, power density ≥5kW / dm³, efficiency >98%, supports dSPACE / FPGA fast control, and has an overload capacity of 150% for 60s. The operation panel 4 is convenient for viewing the inverter's operating status parameters. The adjustable fan 3 automatically adjusts the fan speed based on feedback from the inverter's internal temperature sensor. The radiator 10 works together to quickly dissipate heat, maintaining the internal temperature within a reasonable range and ensuring stable high-power operation.

[0021] The working principle of this embodiment is as follows: In use, the panel 1 adopts a narrow and long modular design, with the power unit, DC bus and reactor arranged vertically, which is suitable for side mounting or back mounting in the cabinet, saving space. The DC reactor 6 is integrated on the input side, using flat windings or ferrite cores to reduce volume and eddy current losses. SiC / GaN power devices are used, and the switching frequency is increased to over 50kHz, reducing the size of passive components. The multi-layer PCB stacked layout increases power density. The busbar and heat sink 10 adopt an integrated design. The adjustable fan 3 automatically adjusts the fan speed according to the feedback from the internal temperature sensor of the frequency converter to enhance the heat dissipation effect. The operation panel 4 is convenient for viewing the operating status parameters of the frequency converter.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A narrow and long high power density inverter design characterized by: The utility model relates to a DC reactor, including panel (1), the inside of panel (1) is provided with DC reactor (6), the side of DC reactor (6) is provided with drive board (7), the inside of panel (1) is provided with wiring terminal (8), the inside of panel (1) is provided with expansion card control board (11).

2. The narrow long high power density inverter design of claim 1, wherein: The inside of panel (1) is provided with power board (12), the bottom of drive board (7) is provided with radiator (10), the side of radiator (10) is provided with electrolytic capacitor (9).

3. The narrow long high power density inverter design of claim 1, wherein: One end of panel (1) is installed with outgoing line board (2), and one end of panel (1) is symmetrically provided with adjustable fan (3).

4. The narrow long high power density inverter design of claim 1, wherein: The side of panel (1) is installed with fixed support (5), and the top of panel (1) is provided with operation panel (4).

5. The narrow long high power density inverter design of claim 2, wherein: The power board (12) is arranged below the DC reactor (6).

6. The narrow long high power density inverter design of claim 2, wherein: The expansion card control board (11) is arranged beside the drive board (7), and the radiator (10) is arranged below the expansion card control board (11).

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