Novel starting cabinet control box and control method thereof

Abstract

The invention relates to a novel starting cabinet control box and a control method thereof, and aims to simplify the structure and complexity of a starting cabinet in traditional industrial application. The control box integrates a plurality of functional modules, and comprises an electronic voltage stabilizing circuit, a timing circuit chip, an electronic and manual switching circuit, a starting and operating circuit control module, microcontroller software, a silicon controlled rectifier circuit and an optical isolation synchronous timing power supply module. By reducing the number of assemblies and simplifying wiring, the material cost is reduced, the installation and maintenance process is simplified, and the system reliability is improved. In addition, the switching interval between the starting contactor and the operation contactor is allowed to be flexibly customized, the phenomenon that the switching time between the starting contactor and the operation contactor is too short, and the generated electric arc is instantaneously short-circuited is prevented, and the operation efficiency is improved. The innovative design provides a more efficient, reliable and environment-friendly solution for motor start control in an industrial environment.

Description

Technical Field

[0001] The invention relates to the technical field of industrial control, in particular to a novel starter cabinet control box and a control method thereof. Background Art

[0002] In the industrial field, starter cabinets are used to control the starting and operation of large electrical motors. Common ones include star-delta starter cabinets, auto-coupling step-down starter cabinets, etc. These starter cabinets usually contain a large number of electrical components, such as relays, timers, and control cables, to achieve the starting and operation control of the motor.

[0003] Disadvantages of existing technology

[0004] Complexity and reliability issues:

[0005] Existing starter cabinets are prone to failure and difficult to maintain due to the numerous components and complex wiring. Complex wiring increases the risk of errors, which may lead to system malfunction or safety hazards.

[0006] Limitations of mechanical components:

[0007] Traditional systems rely on mechanical timers and relays, which are prone to wear and tear, resulting in unreliable operation. In addition, they take up a lot of space, which is not conducive to space-constrained environments.

[0008] Lack of flexibility:

[0009] The startup and operation parameters of existing systems (such as the switching time between the startup contactor and the running contactor) are difficult to adjust, making it difficult to meet the specific needs of different applications, affecting system performance.

[0010] Therefore, a new starter cabinet control box and control method thereof are needed to overcome the above problems. Summary of the invention

[0011] In order to solve the problems of the prior art, the present invention provides a novel starter cabinet control box and a control method thereof.

[0012] In order to solve the above technical problems, the present invention is implemented by the following technical solutions: a new starter cabinet control box and a control method thereof, comprising:

[0013] Electronic voltage stabilization circuit module, used to provide stable voltage;

[0014] A timing circuit chip control module is used to control the delayed start time of the starter cabinet;

[0015] Electronic key and manual electronic key switching circuit control module, used to realize the switching between automatic and manual control modes;

[0016] A starting circuit output control module is used to control the on and off of the starting contactor;

[0017] The running circuit output control module is used to control the operation of the running contactor;

[0018] Microcontroller chip and software control module, used to coordinate the work of each module and realize intelligent control and logic operation;

[0019] The thyristor circuit working module cooperates with the start-up circuit output control module to realize the control of the circuit;

[0020] Optical-controlled isolation synchronous timing power supply module, used to provide stable timing power supply and achieve optical-controlled isolation;

[0021] Among them, the electronic voltage stabilizing circuit module, timing circuit chip control module, electronic key and manual electronic key switching circuit control module, starting circuit output control module, running circuit output control module, microcontroller chip and software control module, thyristor circuit working module, and light-controlled isolation synchronous timing power supply module are interconnected to form a circuit system of the starting cabinet control box.

[0022] In this mode, by integrating multiple functional modules such as an electronic voltage stabilizing circuit module, a timing circuit chip control module, an electronic key and a manual electronic key switching circuit control module, the present invention significantly simplifies the structure of the starter cabinet. A large number of components and complex control circuits are required in a traditional starter cabinet, while the present invention reduces the number of components, simplifies wiring, and reduces the complexity of installation and maintenance through modular design.

[0023] By reducing the time control relay, the intermediate control relay and 80%-90% of the secondary copper wire, the material cost is greatly reduced. In the traditional starting cabinet, the complex wiring requires a large amount of copper wire, while the present invention reduces the wiring requirements, saves materials and reduces the overall cost through modular design. Through the timing circuit chip control module, the microcontroller chip and the software control module, the flexible customization of the switching gap between the starting contactor and the running contactor is realized. Users can adjust the switching time according to actual needs to ensure a smooth transition of the equipment during startup and operation, and improve the operation efficiency of the equipment. The electronic button and manual electronic button switching circuit control module allow the user to switch the startup and operation modes through electronic buttons or manual buttons. This design improves the flexibility and convenience of operation, is suitable for different application scenarios, and meets the diverse needs of users.

[0024] The electronic voltage stabilization circuit module and the light-controlled isolation synchronous timing power supply module ensure the stable operation of the system. The electronic voltage stabilization circuit module provides a stable power supply through a voltage stabilizer to prevent the influence of voltage fluctuations on the system; the light-controlled isolation synchronous timing power supply module prevents electrical interference through light-controlled isolation technology to ensure the synchronous operation of each module and the stability of power supply. The microcontroller chip and software control module coordinate the work of each module through a preset program to achieve intelligent control and logical operations. The module can automatically coordinate the startup and operation process, reduce manual intervention, and improve the automation level of the equipment. The thyristor circuit working module ensures the stability of the startup and operation process by adjusting the current and preventing current overload. The module can effectively protect the equipment and extend the service life of the equipment.

[0025] In an implementation manner of the first aspect, the electronic voltage stabilization circuit module provides a stable power supply through a voltage stabilizer to ensure stable operation of each module.

[0026] In an implementation manner of the first aspect, the timing circuit chip control module controls the switching gap between the starting contactor and the running contactor according to a preset time parameter.

[0027] In an implementation of the first aspect, the electronic button and manual electronic button switching circuit control module allows the user to switch between the startup and operation modes through the electronic button or the manual button.

[0028] In an implementation manner of the first aspect, the startup circuit output control module and the operation circuit output control module respectively adjust the current through the thyristor circuit working module to ensure the stability of the startup and operation processes.

[0029] In one implementation of the first aspect, the microcontroller chip and the software control module coordinate the work of each module through a preset program to achieve automatic control.

[0030] In an implementation manner of the first aspect, the optically-controlled isolation synchronous timing power supply module ensures the synchronous operation of each module and the stability of power supply through optically-controlled isolation technology.

[0031] In a second aspect, a novel control method for a starter cabinet control box comprises the following steps:

[0032] S1: Provides stable power supply through electronic voltage stabilization circuit module;

[0033] S2: Setting the start-up and operation time parameters through the timing circuit chip control module;

[0034] S3: Select manual or automatic control mode by switching the circuit control module through the electronic key and the manual electronic key;

[0035] S4: Control the starting circuit and the running circuit respectively through the starting circuit output control module and the running circuit output control module;

[0036] S5: coordinate the work of each module through the microcontroller chip and software control module;

[0037] S6: Regulate the current through the thyristor circuit working module to ensure stable operation of the equipment;

[0038] S7: The optically controlled isolation synchronous timing power supply module ensures that each module works synchronously.

[0039] In an implementation manner of the second aspect, the switching gap between the starting contactor and the running contactor can be flexibly customized according to actual needs.

[0040] In an implementation of the second aspect, the method simplifies the structure of the starter cabinet and reduces the cost and complexity of installation and maintenance by reducing the time control relay, the intermediate control relay and 80%-90% of the secondary copper wire.

[0041] The beneficial effects of the present invention are:

[0042] 1. The present invention integrates multiple functional modules, greatly reduces the relays and complex wiring used in the traditional starter cabinet, simplifies the overall structure, reduces the complexity of installation and maintenance; reduces the use of components such as time relays and intermediate relays, and reduces material costs. At the same time, it reduces potential failure points and improves system reliability; reduces the use of secondary copper wire by 80-90%, which not only saves installation time, but also reduces the risk of wiring errors, reduces equipment downtime, and prevents the short switching time between startup and operation, resulting in instant short-circuit of arcs.

[0043] 2. Integrated microcontroller and software control to achieve intelligent and precise control of startup and operation cycles, improve equipment performance and energy efficiency; use optical isolation synchronous timing power supply module to ensure the purity and stability of timing signals, avoid electrical interference, and improve the reliability of system operation; easy installation, reduced maintenance, flexible operation, improve user experience, and reduce overall operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is the controller working flow chart of the present invention.

[0045] Figure 2 It is the electronic key circuit diagram of the present invention.

[0046] Figure 3 The invention discloses a circuit block diagram of a control box of a starter cabinet.

[0047] Figure 4It is a schematic diagram of the device terminal structure of the present invention. Specific embodiments

[0048] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] Embodiment: As Figures 1 to 4 shown, a new type of starting cabinet control box and its control method.

[0050] This control box is applicable to electrical equipment that requires delayed start-up, such as star-delta starting cabinets and autotransformer starting cabinets. Through simplified structure and integrated design, efficient and stable control is achieved.

[0051] Component selection and preparation

[0052] Electronic voltage stabilization circuit module: Select the LM7805 voltage regulator to provide a stable 5V DC power supply.

[0053] Timing circuit chip control module: Use the Arduino Nano microcontroller for precise control of start-up and running time.

[0054] Electronic key and manual key switching circuit control module: Use two tactile switches for selecting electronic and manual control modes respectively.

[0055] Starting circuit output control module: Use the relay module to control the starting contactor.

[0056] Running circuit output control module: Also use the relay module to control the running contactor.

[0057] Microcontroller and software control module: Arduino Nano is responsible for overall coordination and logical operations.

[0058] Thyristor circuit working module: Use SCR (such as BT136) for current control.

[0059] Optical isolation synchronous timing power supply module: Use the HCPL-2630 optocoupler to achieve isolation.

[0060] 2. Circuit design

[0061] Voltage stabilization circuit: Connect the LM7805 to the input power supply and output stable 5V for the whole system to use.

[0062] Timing circuit: Arduino Nano is programmed to implement timing functions and control the start and run time.

[0063] Switching Circuit: Two tact switches are connected to the digital ports of Arduino Nano to select the control mode.

[0064] Output Control Circuit: The relay module is controlled by Arduino Nano to drive the contactor.

[0065] Optical isolation circuit: HCPL-2630 isolated timing power supply to ensure signal purity.

[0066] 3. Assembly steps

[0067] Layout and solder the voltage regulator circuit on the PCB.

[0068] Install Arduino Nano and peripheral circuits, and make sure the connections are correct.

[0069] Connect the switching circuit and output control circuit according to the design drawings.

[0070] Install and connect the optical isolation module to the power section.

[0071] 4. Testing

[0072] Test the functions of each module separately to ensure correctness.

[0073] Overall power-on test to verify control logic and timing accuracy.

[0074] Adjust the SCR parameters to ensure smooth current regulation.

[0075] 5. Calibration and adjustment

[0076] Calibrate the timing circuit to ensure delay accuracy.

[0077] Adjust the SCR firing angle to optimize the starting and running current.

[0078] 6. Documentation

[0079] Provide detailed circuit diagram and bill of materials.

[0080] Source code for Arduino Nano is available.

[0081] Provides installation and maintenance instructions.

[0082] Safety precautions

[0083] Make sure the high voltage parts are well insulated.

[0084] Set up over-current and short-circuit protection measures.

[0085] Common Problems and Solutions

[0086] Inaccurate timing: Check the timing circuit connection and code logic.

[0087] Contactor does not work: Check the relay and contactor connections to ensure that the voltage is normal.

[0088] Through the above steps, this embodiment provides a complete new starter cabinet control box production plan, which is convenient for professionals to refer to and implement.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel starter cabinet control box and control method thereof, characterized in that: include: Electronic voltage stabilization circuit module, used to provide stable voltage; A timing circuit chip control module is used to control the delayed start time of the starter cabinet; Electronic key and manual electronic key switching circuit control module, used to realize the switching between automatic and manual control modes; A starting circuit output control module is used to control the on and off of the starting contactor; The running circuit output control module is used to control the operation of the running contactor; Microcontroller chip and software control module, used to coordinate the work of each module and realize intelligent control and logic operation; The thyristor circuit working module cooperates with the start-up circuit output control module to realize the control of the circuit; Optical-controlled isolation synchronous timing power supply module, used to provide stable timing power supply and achieve optical-controlled isolation; Among them, the electronic voltage stabilizing circuit module, timing circuit chip control module, electronic key and manual electronic key switching circuit control module, starting circuit output control module, running circuit output control module, microcontroller chip and software control module, thyristor circuit working module, and light-controlled isolation synchronous timing power supply module are interconnected to form a circuit system of the starting cabinet control box.

2. According to claim 1, a novel starter cabinet control box and control method thereof are characterized in that: The electronic voltage stabilizing circuit module provides a stable power supply through a voltage stabilizer to ensure the stable operation of each module.

3. According to claim 1, a novel starter cabinet control box and control method thereof are characterized in that: The timing circuit chip control module controls the switching interval between the starting contactor and the running contactor according to a preset time parameter.

4. A novel starter cabinet control box and control method thereof according to claim 1, characterized in that: The electronic key and manual electronic key switching circuit control module allows the user to switch between the start-up and operation modes through the electronic key or the manual key.

5. The novel starter cabinet control box and control method thereof according to claim 1 is characterized in that: The starting circuit output control module and the running circuit output control module respectively adjust the current through the thyristor circuit working module to ensure the stability of the starting and running processes.

6. The novel starter cabinet control box and control method thereof according to claim 1 is characterized in that: The microcontroller chip and the software control module coordinate the work of each module through a preset program to achieve automatic control.

7. The novel starter cabinet control box and control method thereof according to claim 1 is characterized in that: The optically-controlled isolation synchronous timing power supply module ensures the synchronous operation of each module and the stability of power supply through optically-controlled isolation technology.

8. A novel control method for a starter cabinet control box, characterized in that: The following steps are involved: S1: Provides stable power supply through electronic voltage stabilization circuit module; S2: Setting the start-up and operation time parameters through the timing circuit chip control module; S3: Select manual or automatic control mode by switching the circuit control module through the electronic key and the manual electronic key; S4: Control the starting circuit and the running circuit respectively through the starting circuit output control module and the running circuit output control module; S5: coordinate the work of each module through the microcontroller chip and software control module; S6: Regulate the current through the thyristor circuit working module to ensure stable operation of the equipment; S7: The optically controlled isolation synchronous timing power supply module ensures that each module works synchronously.

9. A control method for a novel starter cabinet control box according to claim 8, characterized in that: The switching gap between the starting contactor and the running contactor can be flexibly customized according to actual needs.

10. The control method of the novel starter cabinet control box according to claim 8 is characterized in that: The method simplifies the structure of the starter cabinet and reduces the cost and complexity of installation and maintenance by reducing the time control relay, the intermediate control relay and 80%-90% of the secondary copper wires.

Images