Intelligent soft switching control system

Abstract

The utility model relates to the technical field of power electronics, and discloses an intelligent soft switching control system, which comprises a power supply input module, the output end of the power supply input module is electrically connected with a conversion module, the output end of the conversion module is electrically connected with a soft switching control module, the output end of the soft switching control module is electrically connected with a load, and the load is electrically connected with the power supply input module. The input end of the soft switch control module is electrically connected to the output end of the microprocessor control module, the output end of the microprocessor control module is electrically connected with a communication module, and the output end of the protection module is electrically connected to the input ends of the soft switch control module and the microprocessor control module. And a double-resonance circuit assembly is arranged in the soft switching control module. According to the utility model, the soft switching control of the load is realized through the electrical connection structure, the functions of power supply purification, energy conversion, state monitoring, remote communication and fault protection are realized, and the high-precision control and energy-saving requirements of overall operation are met.

Description

Technical Field

[0001] This utility model relates to the field of power electronics technology, and in particular to an intelligent soft-switching control system. Background Technology

[0002] Intelligent switch control technology has developed rapidly in recent years and is widely used in fields such as industrial automation and smart homes.

[0003] Traditional switching control methods use two simple states: on and off. The control quantity remains constant. Although simple to implement, this results in insufficient control accuracy and reliability under complex operating conditions, making it difficult to meet the needs of high-precision control and energy saving in fields such as industrial automation and new energy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an intelligent soft-switching control system, which aims to improve the problem of difficulty in meeting high-precision control and energy saving.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent soft-switching control system, comprising a power input module, a microprocessor control module, a protection module, and a signal detection module. The output terminal of the power input module is electrically connected to a conversion module, the output terminal of the conversion module is electrically connected to a soft-switching control module, the output terminal of the soft-switching control module is electrically connected to a load, the input terminal of the soft-switching control module is electrically connected to the output terminal of the microprocessor control module, the output terminal of the microprocessor control module is electrically connected to a communication module, the output terminal of the communication module is electrically connected to an external device, the output terminal of the protection module is electrically connected to the input terminals of the soft-switching control module and the microprocessor control module, the output terminal of the signal detection module is electrically connected to the input terminal of the microprocessor control module, and the soft-switching control module internally incorporates a dual resonant circuit assembly.

[0006] The above technical solution involves: the power input module outputting DC power to the soft-switching control module via the conversion module; the microprocessor control module driving the soft switch via PWM signal and receiving feedback from the signal detection module to dynamically adjust the resonance mode; the protection module responding quickly in case of abnormality; and the communication module communicating bidirectionally with external devices.

[0007] As a further description of the above technical solution:

[0008] Preferably, the dual resonant circuit assembly includes a series resonant branch and a parallel resonant branch. The series resonant branch is composed of a resonant inductor L1 and a resonant capacitor C1 connected in series, and the parallel resonant branch is composed of a resonant capacitor C2.

[0009] The above technical solution involves connecting the two ends of the resonant capacitor C2 to the common terminal of the inductor L1 and the capacitor C1, and ground, respectively, and connecting it to the microprocessor control module. Under light load, capacitor C2 is turned on to form a double resonance to improve efficiency, while under heavy load, it is turned off to leave only a single resonance to maintain stability.

[0010] As a further description of the above technical solution:

[0011] Preferably, the power input module includes an EMI filter, a surge protector, and an input interface; the conversion module includes a rectifier bridge, a PFC circuit, and a filter capacitor; the soft-switching control module includes a dual resonant circuit assembly, a switching device, and a filter; the protection module includes overvoltage protection elements, overcurrent protection elements, and short-circuit protection elements; and the signal detection module includes a current sampling element, a voltage sampling element, and a temperature sensing element.

[0012] The above technical solution includes: a power input module with an input interface, an EMI filter, and a surge protector; a conversion module consisting of a rectifier bridge, a PFC circuit, and a filter capacitor; a soft-switching control module integrating a dual resonant circuit assembly, a full-bridge switching device, and an LC filter; a protection module with overvoltage protection, overcurrent protection, and short-circuit protection components; and a signal detection module that collects signals in real time and feeds them back to the microprocessor through current sampling, voltage sampling, and temperature sensing components. All modules work together to achieve stable control with strong anti-interference capabilities.

[0013] As a further description of the above technical solution:

[0014] Preferably, the communication module is an RS485 transceiver, and the external device is a touch screen terminal.

[0015] The above technical solution uses an RS485 transceiver connected to a microprocessor for bidirectional communication with a touchscreen terminal. The touchscreen displays data such as voltage, current, and temperature in real time, supports remote start / stop and parameter configuration, and improves system management and maintenance efficiency.

[0016] As a further description of the above technical solution:

[0017] Preferably, the capacitor C2 is electrically connected to the microprocessor control module via a switching device.

[0018] The above technical solution enables the switching device to form a double resonance in capacitor C2 under light load, and leaves only a single resonance to maintain stability under heavy load, thereby reducing switching losses and adapting to the load.

[0019] As a further description of the above technical solution:

[0020] Preferably, the EMI filter is connected in series with the input interface, the surge protector is connected in parallel across the two ends of the input interface, the rectifier bridge is electrically connected to the power input module, the filter capacitor is connected in parallel with the output of the rectifier bridge, the voltage sampling element is electrically connected to the output of the soft-switching control module, the current sampling element is connected in series with the soft-switching control module, the temperature sensing element is fixedly connected to the outer wall of the soft-switching control module, the input of the overvoltage protection element is electrically connected to the voltage sampling element, the output of the overvoltage protection element is electrically connected to the microprocessor control module, the input of the overcurrent protection element is electrically connected to the current sampling element, and the output of the overcurrent protection element is electrically connected to the soft-switching control module.

[0021] The above technical solution involves: an EMI filter connected in series at the input interface to filter high frequencies; a surge protector connected in parallel to suppress overvoltage; a rectifier bridge connected to the power input; a filter capacitor connected in parallel to the rectifier output; a voltage sampling element connected in parallel to the soft-switching control module output; a current sampling element connected in series in the circuit; and a temperature sensing element fixed to the outer wall. Overvoltage protection is connected to the voltage sampling and microprocessor control module, and overcurrent protection is connected to the current sampling and soft-switching control module.

[0022] As a further description of the above technical solution:

[0023] Preferably, the two ends of the parallel resonant branch are electrically connected to the two ends of the series resonant branch.

[0024] The above technical solution achieves dual-resonance switching by controlling the on / off state of capacitor C2 through the microprocessor control module.

[0025] As a further description of the above technical solution:

[0026] Preferably, the microprocessor control module is bidirectionally electrically connected to the communication module, and the communication module is bidirectionally electrically connected to external devices.

[0027] Through the above technical solution, the microprocessor and RS485 transceiver communicate bidirectionally, and the touch screen terminal interacts bidirectionally, enabling real-time data display and parameter configuration.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the soft-switching control of the load is realized through the electrical connection structure between the power input module, conversion module, soft-switching control module, microprocessor control module, communication module, protection module and signal detection module. It has the functions of power purification, energy conversion, status monitoring, remote communication and fault protection, and meets the high-precision control and energy-saving requirements of the overall operation.

[0030] 2. In this utility model, by using a dual resonant circuit component consisting of a series resonant branch and a parallel resonant branch included in the soft-switching control module, the switching device can switch in a zero-voltage or zero-current state, reducing switching losses and noise. The resonant mode can be switched according to load changes, thereby improving operating efficiency and stability under wide load conditions. Attached Figure Description

[0031] Figure 1 This is a schematic block diagram of the intelligent soft-switching control system proposed in this utility model;

[0032] Figure 2 This is a schematic block diagram of the dual resonant circuit component structure of the intelligent soft-switching control system proposed in this utility model;

[0033] Figure 3 This is a schematic block diagram of the switching module structure of the intelligent soft-switching control system proposed in this utility model;

[0034] Figure 4 This is a schematic block diagram of the soft-switching control module structure of the intelligent soft-switching control system proposed in this utility model;

[0035] Figure 5 This is a schematic block diagram of the protection module structure of the intelligent soft-switching control system proposed in this utility model;

[0036] Figure 6 This is a schematic block diagram of the signal detection module structure of the intelligent soft-switching control system proposed in this utility model;

[0037] Figure 7 This is a schematic block diagram of the power input module structure of the intelligent soft-switching control system proposed in this utility model. Detailed Implementation

[0038] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Reference Figure 1An embodiment of this utility model provides an intelligent soft-switching control system, comprising a power input module, a microprocessor control module, a protection module, and a signal detection module. The output terminal of the power input module is electrically connected to a conversion module, the output terminal of the conversion module is electrically connected to a soft-switching control module, the output terminal of the soft-switching control module is electrically connected to a load, the input terminal of the soft-switching control module is electrically connected to the output terminal of the microprocessor control module, the output terminal of the microprocessor control module is electrically connected to a communication module, the output terminal of the communication module is electrically connected to an external device, the output terminal of the protection module is electrically connected to the input terminals of the soft-switching control module and the microprocessor control module, the output terminal of the signal detection module is electrically connected to the input terminal of the microprocessor control module, and a dual resonant circuit assembly is internally provided in the soft-switching control module.

[0040] Specifically, the power input module connects to AC and / or DC power via an input interface. Its internal EMI filter, including a common-mode inductor and XY capacitors, is connected in series with the input interface to filter out high-frequency interference. A surge protector is connected in parallel across the input interface to suppress overvoltage surges, achieving power purification and providing stable input for subsequent modules. The conversion module's rectifier bridge rectifies the input power into DC, which is then smoothly output as a stable high-voltage DC through a PFC circuit and filter capacitors, completing the energy conversion to meet power quality requirements. The soft-switching control module receives the PWM drive signal output from the microprocessor control module at its input. The signal detection module collects load voltage, current, and soft-switching signals in real time. The control module sends temperature and other signals back to the microprocessor control module. The microprocessor control module dynamically adjusts the resonance mode and drive parameters based on the feedback data to monitor and control the system's operating status. The microprocessor control module interacts bidirectionally with external devices through the communication module, supporting remote start / stop and parameter configuration, and enabling remote communication. When the protection module detects abnormalities such as overvoltage or overcurrent, it responds quickly through hardware interrupts, rapidly shutting down the soft-switching control module to provide reliable fault protection and ensure safe system operation. The overall structure not only meets the requirements of high-precision control but also significantly reduces energy consumption through soft-switching technology, significantly improving the overall performance and reliability of the system.

[0041] Reference Figure 2 The dual resonant circuit assembly includes a series resonant branch and a parallel resonant branch. The series resonant branch is composed of a resonant inductor L1 and a resonant capacitor C1 connected in series, and the parallel resonant branch is composed of a resonant capacitor C2.

[0042] Specifically, the dual resonant circuit component consists of a series resonant branch composed of a resonant inductor L1 and a resonant capacitor C1 connected in series, and a parallel resonant branch composed of a resonant capacitor C2. The two ends of capacitor C2 are connected to the common terminal of inductor L1 and capacitor C1 and ground, respectively, and are connected to the microprocessor control module through an optocoupler relay. When the microprocessor detects that the load rate is less than 30%, it outputs a high-level signal to turn on the optocoupler relay, so that capacitor C2 is added to the circuit to form a parallel resonant circuit from inductor L1 to capacitor C1 to capacitor C2. This widens the soft-switching operating range, reduces switching losses under light loads, and improves the system efficiency under low load conditions. When the load rate is greater than 80%, the optocoupler relay is turned off, and only the series resonant branch composed of inductor L1 and capacitor C1 works, maintaining a stable resonant frequency and ensuring the load-carrying capacity under heavy loads. This ensures that the soft-switching control module operates efficiently and stably over a wide load range, meeting the requirements of high-precision loads.

[0043] Reference Figure 3 , Figure 4 and Figure 7 The power input module includes an EMI filter, surge protector, and input interface; the conversion module includes a rectifier bridge, PFC circuit, and filter capacitor; the soft-switching control module includes a dual resonant circuit assembly, switching devices, and filters; the protection module includes overvoltage protection components, overcurrent protection components, and short-circuit protection components; and the signal detection module includes current sampling components, voltage sampling components, and temperature sensing components.

[0044] Specifically, the power input module includes an EMI filter connected in series with the input interface and a surge protector connected in parallel across the input interface, which can filter out high-frequency common-mode and differential-mode interference and suppress surge impact, improving the system's anti-interference capability; the conversion module includes a rectifier bridge electrically connected to the power input module and a filter capacitor C1 connected in parallel to the output of the rectifier bridge, outputting a stable DC voltage; the soft-switching control module includes a dual-resonant circuit assembly consisting of a series resonant branch composed of a resonant inductor L2 and a resonant capacitor C2 connected in series and a parallel resonant branch; the protection module includes an overvoltage protection element electrically connected to the voltage sampling element at the input and to the microprocessor control module at the output, an overcurrent protection element electrically connected to the current sampling element at the input and to the soft-switching control module at the output, and a short-circuit protection element, the protection mechanism ensuring that the system quickly cuts off the output under abnormal conditions; the signal detection module includes a voltage sampling element connected in parallel with the output of the soft-switching control module, a current sampling element connected in series with the soft-switching control module, and a thermally conductive temperature sensing element to achieve real-time and accurate monitoring of the output voltage, current, and temperature, providing data support for system control.

[0045] Reference Figure 1 The communication module is an RS485 transceiver, and the external device is a touch screen terminal;

[0046] Specifically, the communication module uses an RS485 transceiver, which is connected to the microprocessor through optical isolation and communicates bidirectionally with the touch screen terminal. The touch screen can display the status of voltage, current and temperature in real time. Operators can remotely monitor the system operation and adjust the output parameters, improving operation and maintenance efficiency while reducing labor costs.

[0047] Reference Figure 1 Capacitor C2 is electrically connected to the microprocessor control module through a switching device;

[0048] Specifically, when the load rate is less than 30%, the MOSFET is turned on to connect capacitor C2 and form a double resonant circuit. When the load rate is greater than 80%, the MOSFET is turned off, leaving only a single resonant circuit to maintain frequency stability.

[0049] Reference Figure 5 , Figure 6 An EMI filter is connected in series with the input interface; a surge protector is connected in parallel across the input interface; a rectifier bridge is electrically connected to the power input module; a filter capacitor is connected in parallel with the output of the rectifier bridge; a voltage sampling element is electrically connected to the output of the soft-switching control module; a current sampling element is connected in series with the soft-switching control module; a temperature sensing element is fixedly connected to the outer wall of the soft-switching control module; the input of the overvoltage protection element is electrically connected to the voltage sampling element; the output of the overvoltage protection element is electrically connected to the microprocessor control module; the input of the overcurrent protection element is electrically connected to the current sampling element; and the output of the overcurrent protection element is electrically connected to the soft-switching control module.

[0050] Specifically, an EMI filter is connected in series with the input interface to filter out high-frequency interference, and a surge protector is connected in parallel across the interface to suppress overvoltage and improve power input stability. The rectifier bridge is connected to the power input module to rectify the power supply, and a filter capacitor is connected in parallel to smooth the DC voltage at its output. A voltage sampling element is connected in parallel to the soft switch output, a current sampling element is connected in series, and a temperature sensing element is fixed to the outer wall of the soft switch to collect voltage, current, and temperature signals in real time. The overvoltage protection element has its input connected to the voltage sampler and its output connected to the microprocessor, while the overcurrent protection element has its input connected to the current sampler and its output connected to the soft switch, triggering a hardware interrupt in case of an abnormality. The entire connection achieves power purification, real-time signal monitoring, and dual protection, ensuring reliable operation.

[0051] Reference Figure 2 The two ends of the parallel resonant branch are electrically connected to the two ends of the series resonant branch, respectively.

[0052] Specifically, the two ends of capacitor C2 in the parallel resonant branch are connected to the common terminal of L1 and C1 in the series resonant branch and ground, respectively. The switching of the dual resonant mode is achieved by controlling the on and off state through the microprocessor control module.

[0053] Reference Figure 1The microprocessor control module and the communication module are bidirectionally electrically connected, and the communication module is bidirectionally electrically connected to external devices.

[0054] Specifically, the microprocessor control module is bidirectionally connected to the RS485 transceiver via an interface, and the RS485 transceiver communicates bidirectionally with the touch screen terminal; the terminal displays system data in real time, supports remote parameter configuration and fault alarm recording, and improves operation and maintenance efficiency.

[0055] Working Principle: The output of the power input module is electrically connected to the conversion module. Its internal EMI filter is connected in series with the input interface, and a surge protector is connected in parallel across the input interface, filtering and protecting the input power from surges. The rectifier bridge within the conversion module is electrically connected to the power input module, rectifying the input power into DC. This DC is then processed by a filter capacitor and PFC circuit connected in parallel with the rectifier bridge output, outputting a stable high-voltage DC to the soft-switching control module. The output of the soft-switching control module is electrically connected to the load, and its input is electrically connected to the output of the microprocessor control module. The output of the microprocessor control module is electrically connected to the communication module, enabling bidirectional electrical connection with external devices. It can receive external control commands and upload system status. The output of the signal detection module is electrically connected to the input of the microprocessor control module. Its voltage sampling element is connected to the soft-switching control module. The output of the module is electrically connected to the current sampling element and the soft-switching control module in series, and the temperature sensing element is fixedly connected to the outer wall of the soft-switching control module. It collects the load voltage, current and the temperature of the soft-switching control module in real time and feeds them back to the microprocessor. The output of the protection module is electrically connected to the input of the soft-switching control module and the microprocessor control module. Its overvoltage protection element input is electrically connected to the voltage sampling element and its output is electrically connected to the microprocessor control module. Its overcurrent protection element input is electrically connected to the current sampling element and its output is electrically connected to the soft-switching control module. When an abnormality such as overvoltage or overcurrent is detected, the microprocessor is triggered to shut down the soft-switching control module in an emergency through a hardware interrupt. The modules form a collaborative working link for energy conversion, control signal transmission, status feedback and fault protection through the above electrical connections, so as to realize intelligent soft-switching control of the load.

[0056] A dual-resonant circuit is formed by a series resonant branch consisting of resonant inductor L1 and resonant capacitor C1 connected in series, and a parallel resonant branch consisting of resonant capacitor C2. The two ends of the parallel resonant branch are respectively connected to the two ends of the series resonant branch, forming a structure in parallel with the series resonant branch. Capacitor C2 is connected to the microprocessor control module through a switching device. The microprocessor calculates the load rate based on the load current collected by the signal detection module. When the load rate is less than 30%, the output signal turns on the switching device, so that capacitor C2 is connected to the circuit, forming a dual-resonant circuit with inductor L1 and capacitor C1, which widens the soft-switching operating range to improve light-load efficiency. When the load rate is greater than 80%, the switching device is turned off, and only the series resonant branch consisting of inductor L1 and capacitor C1 works to maintain the stability of the resonant frequency.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent soft-switching control system, comprising a power input module, a microprocessor control module, a protection module, and a signal detection module, characterized in that: The output of the power input module is electrically connected to a conversion module, the output of the conversion module is electrically connected to a soft-switching control module, the output of the soft-switching control module is electrically connected to a load, the input of the soft-switching control module is electrically connected to the output of the microprocessor control module, the output of the microprocessor control module is electrically connected to a communication module, the output of the communication module is electrically connected to an external device, the output of the protection module is electrically connected to the inputs of the soft-switching control module and the microprocessor control module, the output of the signal detection module is electrically connected to the input of the microprocessor control module, and the soft-switching control module internally contains a dual resonant circuit assembly.

2. The intelligent soft-switching control system according to claim 1, characterized in that: The dual-resonant circuit assembly includes a series resonant branch and a parallel resonant branch. The series resonant branch is composed of a resonant inductor L1 and a resonant capacitor C1 connected in series, and the parallel resonant branch is composed of a resonant capacitor C2.

3. The intelligent soft-switching control system according to claim 1, characterized in that: The power input module includes an EMI filter, a surge protector, and an input interface; the conversion module includes a rectifier bridge, a PFC circuit, and a filter capacitor; the soft-switching control module includes a dual resonant circuit assembly, a switching device, and a filter; the protection module includes overvoltage protection elements, overcurrent protection elements, and short-circuit protection elements; and the signal detection module includes a current sampling element, a voltage sampling element, and a temperature sensing element.

4. The intelligent soft-switching control system according to claim 1, characterized in that: The communication module is an RS485 transceiver, and the external device is a touch screen terminal.

5. The intelligent soft-switching control system according to claim 2, characterized in that: The resonant capacitor C2 is electrically connected to the microprocessor control module through a switching device.

6. The intelligent soft-switching control system according to claim 3, characterized in that: The EMI filter is connected in series with the input interface, the surge protector is connected in parallel across the two ends of the input interface, the rectifier bridge is electrically connected to the power input module, the filter capacitor is connected in parallel with the output of the rectifier bridge, the voltage sampling element is electrically connected to the output of the soft-switching control module, the current sampling element is connected in series with the soft-switching control module, the temperature sensing element is fixedly connected to the outer wall of the soft-switching control module, the input of the overvoltage protection element is electrically connected to the voltage sampling element, the output of the overvoltage protection element is electrically connected to the microprocessor control module, the input of the overcurrent protection element is electrically connected to the current sampling element, and the output of the overcurrent protection element is electrically connected to the soft-switching control module.

7. The intelligent soft-switching control system according to claim 2, characterized in that: The two ends of the parallel resonant branch are electrically connected to the two ends of the series resonant branch, respectively.

8. The intelligent soft-switching control system according to claim 1, characterized in that: The microprocessor control module is bidirectionally electrically connected to the communication module, and the communication module is bidirectionally electrically connected to external devices.

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