High-power built-in bypass soft starter structure

Abstract

The utility model discloses a high-power built-in bypass soft starter structure, and relates to the technical field of soft starters. Comprising a shell, heat dissipation assemblies, a three-phase power supply input end, a three-phase antiparallel thyristor power assembly, a built-in bypass assembly, a three-phase power supply output end and a controller, the heat dissipation assemblies are arranged at the top and the bottom of the shell, and the three-phase antiparallel thyristor power assembly and the built-in bypass assembly are arranged in the shell. The upper end of the three-phase antiparallel thyristor power assembly is connected with a three-phase power supply input end, the lower end of the three-phase antiparallel thyristor power assembly is connected with a three-phase power supply output end through a built-in bypass assembly, and a controller connected with elements in the shell is installed on the front face of the shell. According to the utility model, the bypass contactor is integrated in the soft starter, so that the electrical design is more integrated, the circuit structure of a user is more simplified, the service life of the bypass assembly is prolonged, the use effect is good, and the practicability is strong.

Description

Technical Field

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

[0002] A soft starter is a novel motor control device that integrates soft starting, soft stopping, light-load energy saving, and various protection functions. Domestic soft starters primarily consist of a three-phase, phase-parallel thyristor connected in series between the power supply and the controlled motor, along with its electronic control circuit. Over time, these internal components can easily heat up, leading to the development of a high-power, internally bypassed soft starter. However, due to the unique contact structure within these soft starters, the temperature rise within the housing components is relatively high, impacting the performance and service life of the soft starter. Furthermore, installation is time-consuming and labor-intensive.

[0003] After the soft starter is running, the internal thyristor conduction power consumption will generate losses. Therefore, after the soft start completes the full-voltage start, switching the operating circuit to bypass operation becomes a better option. However, with the innovation of electrification technology, more and more products will be required to have more integrated design trends.

[0004] Therefore, the utility model designs a high-power built-in bypass soft starter structure. Utility Model Content

[0005] In response to the deficiencies in the prior art, the purpose of the utility model is to provide a high-power built-in bypass soft starter structure with a reasonable structural design. The bypass contactor is integrated into the soft starter itself, which can make the electrical design more integrated and the user's circuit structure more simplified. At the same time, with the integrated control of the program and the delayed exit of the thyristor, the bypass can achieve low arcing or no arcing when it is energized, thereby extending the life of the bypass component, having good use effect and strong practicality.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solution: a high-power built-in bypass soft starter structure, including a shell, a heat dissipation component, a three-phase power input terminal, a three-phase anti-parallel thyristor power component, a built-in bypass component, a three-phase power output terminal and a controller, the top and bottom of the shell are provided with heat dissipation components, the shell is provided with a three-phase anti-parallel thyristor power component and a built-in bypass component, the upper end of the three-phase anti-parallel thyristor power component is connected to the three-phase power input terminal, and the lower end of the three-phase anti-parallel thyristor power component is connected to the three-phase power output terminal through the built-in bypass component, and the front of the shell is equipped with a controller connected to the internal components of the shell.

[0007] Preferably, the controller is provided with a control mainboard and a power drive circuit.

[0008] Preferably, a display screen and control buttons are provided on the front panel of the controller.

[0009] Preferably, the outer side wall of the shell is further provided with heat dissipation fins.

[0010] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design, and the design of a high-power (400KW) built-in bypass soft starter is vacant. The built-in bypass component and the three-phase anti-parallel thyristor power component are combined with an excellent structural design to achieve the function of built-in bypass. At the same time, the product maintains a compact structure, good performance and strong practicality. 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 high-power built-in bypass soft starter structure, including a shell 1, a heat dissipation component 2, a three-phase power input terminal 3, a three-phase phase-parallel thyristor power component 4, a built-in bypass component 5, a three-phase power output terminal 6 and a controller 7. The heat dissipation component 2 is provided on the top and bottom of the shell 1, and the three-phase phase-parallel thyristor power component 4 and the built-in bypass component 5 are provided in the shell 1. The upper end of the three-phase phase-parallel thyristor power component 4 is connected to the three-phase power input terminal 3, and the lower end of the three-phase phase-parallel thyristor power component 4 is connected to the three-phase power output terminal 6 through the built-in bypass component 5. The front of the shell 1 is equipped with a controller 7 connected to the internal components of the shell 1.

[0016] It is worth noting that the controller 7 is provided with a control mainboard and a power drive circuit.

[0017] It is worth noting that a display screen and control buttons are provided on the front panel of the controller 7 .

[0018] In addition, the outer wall of the shell 1 is also provided with heat dissipation fins 8, which play a role in conducting heat and increasing the heat dissipation area.

[0019] This specific embodiment integrates the bypass contactor, which originally required an external connection, into the soft starter itself, making the electrical design more integrated and simplifying the user's circuit structure. Combined with the integrated program control and the delayed thyristor deactivation, the bypass achieves low or no arcing when engaged, extending the life of the bypass component. Furthermore, the soft starter's housing is equipped with multiple heat dissipation components that more efficiently dissipate heat generated by the internal components, ensuring the normal operation of the soft starter, significantly extending its service life, and enhancing its practicality.

[0020] 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 high-power built-in bypass soft starter structure, characterized in that: The invention comprises a housing (1), a heat dissipation component (2), a three-phase power input terminal (3), a three-phase anti-parallel thyristor power component (4), a built-in bypass component (5), a three-phase power output terminal (6) and a controller (7). The top and bottom of the housing (1) are both provided with heat dissipation components (2). The housing (1) is provided with a three-phase anti-parallel thyristor power component (4) and a built-in bypass component (5). The upper end of the three-phase anti-parallel thyristor power component (4) is connected to the three-phase power input terminal (3). The lower end of the three-phase anti-parallel thyristor power component (4) is connected to the three-phase power output terminal (6) via the built-in bypass component (5). The front of the housing (1) is provided with a controller (7) connected to the internal components of the housing (1).

2. A high-power built-in bypass soft starter structure according to claim 1, characterized in that: The controller (7) is provided with a control mainboard and a power drive circuit.

3. A high-power built-in bypass soft starter structure according to claim 1, characterized in that: The front panel of the controller (7) is provided with a display screen and control buttons.

4. A high-power built-in bypass soft starter structure according to claim 1, characterized in that: The outer side wall of the housing (1) is also provided with heat dissipation fins (8).

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