Compact high-power soft starter

Abstract

The utility model discloses a compact high-power soft starter, and relates to the technical field of soft starters. Comprising a front cover, a shell and three groups of power modules, the front cover is fixed in front of the shell through screws, the three groups of power modules are arranged in the shell, the three groups of power modules comprise integrated anti-parallel thyristor modules and radiators, the integrated anti-parallel thyristor modules are crimped on the radiators, module spacing grooves are arranged in the shell, and the module spacing grooves are arranged in the shell. Three phases of different power modules are installed in the module interval grooves respectively, a heat dissipation fan is arranged on the top of the shell, and a lower cover is covered outside the heat dissipation fan. The power module is reasonable and compact in structural design, the size of the power module is greatly reduced compared with the same type of products in the market, the independent spacing layers are adopted in the power module, it is ensured that three groups of power modules can be tightly arranged while being installed in an insulated mode, space is reduced, and the heat dissipation effect is ensured due to the arrangement of the heat dissipation fan.

Description

Technical Field

[0001] The utility model relates to the technical field of soft starters, in particular to a compact high-power soft starter. Background Art

[0002] A soft starter is a motor control device that integrates soft starting, soft stopping, light-load energy saving, and various protection functions. It not only ensures smooth, impact-free starting of the motor throughout the entire starting process, but also adjusts starting parameters, such as current limit and start time, based on the characteristics of the motor load. Compact, high-power soft starters gradually increase voltage and current during motor starting to reduce starting shock and grid load. This type of device is commonly used when starting large motors or loads to prevent grid overload and equipment damage. Therefore, it plays a key role in industrial and commercial applications, improving system stability and reliability by reducing grid shock and equipment damage during motor starting.

[0003] The existing high-power soft starters take up a large space and have an unreasonable copper busbar layout. Some compact high-power starters have poor heat dissipation due to their compact structure, which affects their use effect. Based on this, the utility model designs a compact high-power soft starter with a compact structure, good heat dissipation effect, and saved design space. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide a compact high-power soft starter with a reasonable and compact structural design. Compared with similar products on the market, the volume is greatly reduced. An independent spacing layer is used inside to ensure that the three groups of power modules can be arranged tightly while being insulated and installed, reducing space, and a cooling fan is provided to ensure the heat dissipation effect.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solution: a compact high-power soft starter, including a front cover, a shell and three groups of power modules, the front cover is fixed to the front of the shell by screws, and the three groups of power modules are arranged in the shell, the three groups of power modules include an integrated anti-parallel thyristor module and a radiator, the integrated anti-parallel thyristor module is crimped on the radiator, a module spacing groove is provided in the shell, and three different phase power modules are respectively installed in the module spacing groove, a cooling fan is provided on the top of the shell, and the cooling fan is covered with a lower cover.

[0006] Preferably, heat dissipation holes are provided on the bottom of the shell and the lower cover.

[0007] Preferably, the front cover is provided with a display screen and control buttons.

[0008] Preferably, a partition plate is provided between the front cover and the shell.

[0009] Preferably, pins for input and output are provided at both ends of the three groups of power modules, and the pins are provided through pin holes on the lower cover and the shell.

[0010] The beneficial effects of the present invention are as follows: the structural design of the present invention is reasonable and compact, and an integrated anti-parallel thyristor module is adopted to directly press a pair of anti-parallel thyristors onto the radiator to form a compact power component; at the same time, the radiator is used as one of the main circuit conductors to save copper bus layout; a module spacing groove is provided in the shell, and three independent spacing layers are formed inside, so that three groups of power modules with different three phases can be arranged closely while ensuring insulation installation, reducing space design; and an additional forced external air cooling structure (cooling fan) is provided to ensure high efficiency of heat dissipation during operation when the density is high; the service life of the device is greatly improved, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an exploded schematic diagram of the present utility model. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0015] Reference Figure 1-2 This specific embodiment adopts the following technical solution: a compact high-power soft starter, including a front cover 1, a shell 2 and three groups of power modules, the front cover 1 is fixed to the front of the shell 2 by screws, and the shell 2 is provided with three groups of power modules, the three groups of power modules include an integrated anti-parallel thyristor module 3 and a heat sink 4, the integrated anti-parallel thyristor module 3 is crimped on the heat sink 4, a module spacing groove 5 is provided in the shell 2, and three different phase power modules are respectively installed in the module spacing groove 5, a cooling fan 6 is provided on the top of the shell 2, and the cooling fan 5 is covered with a lower cover 7.

[0016] It is worth noting that heat dissipation holes 8 are provided on the bottom of the housing 2 and the lower cover 7 .

[0017] It is worth noting that a display screen 9 and control buttons 10 are provided on the front cover 1 .

[0018] It is worth noting that a partition plate 11 is provided between the front cover 1 and the shell 2. The partition plate 11 cooperates with the module spacing groove 5 so that the three groups of power modules with different three phases can be arranged closely while ensuring insulation installation, thereby reducing space design.

[0019] In addition, pins 12 for input and output are provided at both ends of the three groups of power modules, and the pins 12 are provided through pin holes 13 on the lower cover 7 and the housing 2 .

[0020] This specific embodiment directly crimps a pair of anti-parallel thyristors onto a heat sink to form a compact power component. The heat sink is also used as one of the main circuit conductors, saving copper busbar layout. Module spacing slots are provided within the housing, forming three independent spacing layers internally. This allows three groups of power modules with different three phases to be tightly arranged while ensuring insulated installation. An additional forced external cooling fan is also provided to achieve efficient heat dissipation in high-density settings.

[0021] The soft starter of this specific embodiment has a compact structure and a power range of 200kW. Compared with similar products on the market, its size is significantly reduced. It can be used in narrow space layouts, such as on-board electrical control boxes, explosion-proof cabinets, and high-density electrical layout applications, thereby improving the user's electrical design power density.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A compact high-power soft starter, characterized in that: The invention comprises a front cover (1), a shell (2) and three groups of power modules. The front cover (1) is fixed to the front of the shell (2) by screws. The shell (2) is provided with three groups of power modules. The three groups of power modules include an integrated anti-parallel thyristor module (3) and a heat sink (4). The integrated anti-parallel thyristor module (3) is crimped onto the heat sink (4). The shell (2) is provided with a module spacing groove (5). Three different power modules of different phases are respectively installed in the module spacing groove (5). A cooling fan (6) is provided on the top of the shell (2). The cooling fan (6) is covered with a lower cover (7) on the outside.

2. A compact high-power soft starter according to claim 1, characterized in that: Heat dissipation holes (8) are provided on the bottom of the housing (2) and the lower cover (7).

3. A compact high-power soft starter according to claim 1, characterized in that: The front cover (1) is provided with a display screen (9) and control buttons (10).

4. A compact high-power soft starter according to claim 1, characterized in that: A partition plate (11) is provided between the front cover (1) and the housing (2).

5. A compact high-power soft starter according to claim 1, characterized in that: Pins (12) for input and output are provided at both ends of the three groups of power modules, and the pins (12) are provided through the pin holes (13) on the lower cover (7) and the housing (2).

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