Adaptive control system based on MPPT-magnetic coupling circuit

Abstract

The utility model relates to a self-adaptive control system based on an MPPT-magnetic coupling circuit. The self-adaptive control system comprises a power management module, a charging circuit module, a communication control module, an MPPT control module, a magnetic coupling circuit module, a self-adaptive control module and a system monitoring and protecting module. The input end of the power management module is connected with an external power supply or a standby power supply, and the output end is connected with the MPPT control module; the magnetic coupling circuit module is connected with the MPPT control module; the charging circuit module is respectively connected with the magnetic coupling circuit module and the adaptive control module; the system monitoring and protecting module is connected with the MPPT control module; the communication control module is connected with the MPPT control module. According to the utility model, system parameters can be monitored and adjusted in real time, and high-efficiency energy transmission characteristics of the magnetic coupling circuit are combined, so that maximum power point tracking and self-adaptive control of the energy conversion system are realized, and the efficiency and stability of the system are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic coupling circuits, and in particular relates to an adaptive control system based on an MPPT-magnetic coupling circuit. Background Art

[0002] With the widespread use of renewable energy sources such as solar and wind power, improving the efficiency and stability of these energy conversion systems has become a hot topic of research. MPPT technology, as an intelligent control method, can monitor and adjust the parameters of energy conversion systems in real time, ensuring that they operate at their maximum power point, thereby improving energy conversion efficiency. Magnetic coupling circuits, as a highly efficient energy transmission method, have also gained widespread application in power electronics systems. However, the performance and stability of existing MPPT control systems and magnetic coupling circuits under complex and changing operating conditions still need to be improved. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides an adaptive control system based on the MPPT-magnetic coupling circuit, which can realize maximum power point tracking and adaptive control of the energy conversion system by real-time monitoring and adjustment of system parameters, combined with the efficient energy transmission characteristics of the magnetic coupling circuit, thereby effectively improving the efficiency and stability of the system.

[0004] In order to achieve the above object, the technical solution of the utility model is:

[0005] An adaptive control system based on an MPPT-magnetic coupling circuit, the system includes a power management module, a charging circuit module, a communication control module, an MPPT control module, a magnetic coupling circuit module, an adaptive control module and a system monitoring and protection module;

[0006] The input end of the power management module is connected to an external power supply or a backup power supply, and the output end is connected to the MPPT control module to provide a stable power supply for the system;

[0007] The magnetic coupling circuit module is connected to the MPPT control module, receives the control signal of the MPPT control module, realizes efficient energy transmission, and converts the energy input into electrical energy that can be used by the system;

[0008] The charging circuit module is connected to the magnetic coupling circuit module and the adaptive control module respectively, and is used to receive the electric energy transmitted by the magnetic coupling circuit module, and to exchange information with the adaptive control module through the communication interface and receive the charging strategy signal sent by the adaptive control module;

[0009] The system monitoring and protection module is connected to the MPPT control module and is used to detect real-time parameter information of the system and issue abnormal alarm signals or protection instructions;

[0010] The communication control module is connected with the MPPT control module, and realizes communication between the system and external equipment.

[0011] Preferably, the MPPT control module comprises a single-chip microcomputer.

[0012] Preferably, the power management module comprises a mains and solar input circuit unit, a transmitting circuit unit and a receiving conversion circuit unit.

[0013] Preferably, the transmitting circuit unit further comprises a driving circuit and a resonance circuit, and the resonance circuit comprises a transmitting coil; and the receiving conversion circuit unit further comprises a receiving coil, a rectification filter circuit and a voltage stabilizing circuit.

[0014] Preferably, the system monitoring and protection module comprises overcurrent protection circuit, overvoltage protection circuit and short-circuit protection circuit mechanism, and ensures safe operation of the system under abnormal conditions.

[0015] Preferably, the communication control module comprises a Wi-Fi module or a Bluetooth module.

[0016] The technical effects and advantages of the utility model are as follows:

[0017] The utility model provides a kind of MPPT-magnetic coupling circuit adaptive control system, by MPPT control and magnetic coupling circuit, to maximize energy collection and transmission efficiency;By the adaptive control module set up, can be dynamically adjusted according to real-time information, improve system response speed and stability;By the adaptive control module set up and system monitoring and protection module, to realize comprehensive protection mechanism, ensure battery health, fast, safe charging;By the communication control module set up, to make the system support remote data transmission and control, it is convenient for user to master system state and carry out adjustment at any time. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the system principle diagram of the utility model;

[0019] Figure 2 It is the mains and solar input circuit unit input circuit principle diagram of the utility model;

[0020] Figure 3 It is the full-bridge inverter circuit principle diagram of the driving circuit of the transmitting circuit unit of the utility model;

[0021] Figure 4 It is the resonance circuit principle diagram of the driving circuit in the transmitting circuit unit of the utility model;

[0022] Figure 5 It is the circuit principle diagram of the voltage stabilizing circuit of the receiving conversion circuit unit of the utility model.

[0023] The figure label: 1, MPPT control module;2, communication control module;3, magnetic coupling circuit module;4, power management module;5, charging circuit module;6, system monitoring and protection module;7, adaptive control module. DETAILED DESCRIPTION

[0024] The following embodiments combined with the drawings are further detailed description of the utility model.

[0025] Referring to Figure 1 As shown in the figure, a kind of MPPT-magnetic coupling circuit adaptive control system based on, the system includes power management module 4, charging circuit module 5, communication control module 2, MPPT control module 1, magnetic coupling circuit module 3, adaptive control module 7 and system monitoring and protection module 6.

[0026] The power management module 4 input end is connected with external power supply or standby power supply, and output end is connected with MPPT control module 1, provides stable power supply for system.

[0027] The magnetic coupling circuit module 3 is connected with MPPT control module 1, receives the control signal of MPPT control module, realizes the efficient transmission of energy, and converts energy input into the electric energy available to system.

[0028] The charging circuit module 5 is connected with magnetic coupling circuit module 3 and adaptive control module 7 respectively, for receiving the electric energy transmitted by magnetic coupling circuit module 3, and exchanging information with adaptive control module through communication interface, receives the charging strategy signal sent by it.

[0029] The system monitoring and protection module 6 is connected with MPPT control module 1, for detecting the real-time parameter information of system, and sending abnormal alarm signal or protection instruction.

[0030] The communication control module 2 is connected with MPPT control module 1, realizes system and external equipment communication.

[0031] Preferably, the MPPT control module 1 includes single-chip microcomputer, specifically, the model of single-chip microcomputer is STM32, and STM32 is based on 32-bit ARM Cortex-M kernel, with higher operation capacity and precision.It can efficiently process complex algorithm in wireless charging, such as electromagnetic induction control, PID algorithm, power conversion efficiency optimization, etc.

[0032] Preferably, the power management module 4 includes mains and solar input circuit unit, transmitting circuit unit, receiving conversion circuit unit.

[0033] Referring to Figure 2As shown, the mains input circuit unit converts the mains AC power into DC power by using a rectifier bridge composed of four 1N4148 high-frequency switching diodes, and then further smooths the DC voltage through a capacitor filter circuit. Finally, a 78L12 voltage stabilizing module is used to provide stable DC voltage for the subsequent circuit.

[0034] The solar input circuit unit can integrate a solar panel as a supplemental energy source. When there is sunlight, the solar panel generates electrical energy through the photoelectric effect, and uses an MPPT (Maximum Power Point Tracking) control strategy to improve power generation efficiency. After MPPT control, the electrical energy can charge the internal battery of the charger or directly provide power to the charging circuit, depending on the working mode of the charger and the charging status of the battery.

[0035] Preferably, the transmitting circuit unit further includes a driving circuit and a resonance circuit.

[0036] Specifically, referring to Figure 3 As shown, the driving circuit uses a full-bridge inverter, composed of four AO4606 switching tubes, each driven by a push-pull driving circuit composed of an 8050 and an 8550 triode. The single-chip microcomputer outputs complementary symmetric PWM signals through a timer, and the frequency and duty cycle of the PWM signals can be adjusted according to charging needs to drive the switching tubes in the full-bridge circuit to turn on and off according to certain rules, converting the DC power supply into high-frequency AC power.

[0037] Referring to Figure 4 As shown, the resonance circuit consists of a transmitting coil and a capacitor, with a resonance frequency set to about 175KHz. By reasonably selecting the capacitor value and coil inductance value, the circuit resonates at this frequency, improving power transmission efficiency.

[0038] The transmitting coil uses a coil design with adjustable inductance, and the coil uses a high magnetic permeability ferrite core material. According to different charging distances and load conditions, the single-chip microcomputer (STM32) controls the multi-way switch to select the number of turns of the transmitting coil. When the charging distance is far or the load is large, a coil with more turns is selected to enhance the magnetic field strength; when the charging distance is short or the load is small, a coil with fewer turns is selected to reduce energy loss.

[0039] In addition, the high magnetic permeability ferrite core can significantly increase the inductance value of the coil under the same size, enhance the energy conversion efficiency, and reduce energy loss. This material exhibits low loss in high-frequency applications, making it suitable for radio frequency and high-frequency circuits, which helps to improve overall efficiency and reduce heat generation. The high magnetic permeability characteristic allows the inductance element to be designed more compactly, meeting the miniaturization needs of modern electronic products. At the same time, many ferrite materials have good thermal stability and can work normally at high temperatures.

[0040] Preferably, the receiving conversion circuit unit further comprises a receiving coil, a rectification filter circuit and a voltage stabilizing circuit.

[0041] Specifically, the receiving coil adopts a high-quality and adjustable inductance coil design similar to the transmitting coil, uses a high-permeability ferrite core material, and has a number of turns and an inductance value matched with the transmitting coil to achieve the best magnetic coupling effect. It optimizes the magnetic coupling efficiency, making the energy transmission between the transmitting and receiving coils more efficient. The high-quality adjustable inductance coil can reduce system energy loss and improve overall performance, while having stronger adaptability, allowing the inductance value to be adjusted according to different application requirements. The magnetic field generated by the energized transmitting coil can effectively pass through the receiving coil, thereby achieving energy acquisition; the high-permeability ferrite material can concentrate and guide the magnetic field, reducing energy loss. In addition, by dynamically adjusting the inductance value, the design can optimize magnetic coupling under different working conditions, ensuring high efficiency of the system in various situations. Therefore, this design not only improves energy transmission efficiency, but also enhances the stability and adaptability of the system.

[0042] Specifically, the rectification filter circuit is composed of a capacitor and an inductor. The high-frequency alternating current received by the receiving coil is rectified by a rectification bridge composed of Schottky diodes, and then filtered by a filter circuit (such as a π-type filter circuit) to obtain smooth direct current, providing a stable direct current source for the subsequent charging circuit.

[0043] Specifically, the voltage stabilizing circuit can use a linear voltage stabilizing chip (LM7805) or a switching voltage stabilizing chip (LM2596), which is selected according to different application scenarios and efficiency requirements. Linear voltage stabilizing chip (LM7805) has the advantages of simplicity, low noise and good voltage regulation performance, and is suitable for low-noise applications such as audio equipment and precision instruments, while switching voltage stabilizing chip (LM2596) performs well in high efficiency and large current output, and is suitable for occasions with high power requirements. Switching voltage stabilizing circuit can effectively reduce energy loss and improve energy efficiency under high input voltage and high output current conditions.

[0044] Preferably, the system monitoring and protection module 6 includes overcurrent protection circuit, overvoltage protection circuit and short circuit protection circuit mechanism to ensure safe operation of the system under abnormal conditions.

[0045] Preferably, the communication control module 2 includes a Wi-Fi module or a Bluetooth module.

[0046] The working process of the MPPT-magnetic coupling circuit adaptive control system of the present application is as follows:

[0047] After the system is started, the power management module 4 provides stable power supply for each functional module; the MPPT control module 1 starts to monitor the voltage and current of the energy input in real time and calculates the current output power; according to the MPPT algorithm, the MPPT control module 1 adjusts the system parameters to approach the maximum power point; the magnetic coupling circuit module 3 realizes efficient transmission of energy and converts the energy input into electrical energy available to the system; the charging circuit module 5 intelligently adjusts the charging current and voltage according to the battery state and system demand; the adaptive control module 7 dynamically adjusts the control strategy according to real-time information and historical data to optimize the system performance; the system monitoring and protection module 6 monitors the key parameters in real time and takes measures to protect the system safety in abnormal conditions; the communication control module 2 realizes the communication between the system and external devices (such as power grid, user terminal, etc.).

[0048] The preferred embodiments described above are only preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. An adaptive control system based on MPPT-magnetic coupling circuit, characterized by: The system comprises a power management module (4), a charging circuit module (5), a communication control module (2), an MPPT control module (1), a magnetic coupling circuit module (3), an adaptive control module (7) and a system monitoring and protection module (6); The input end of the power management module (4) is connected to an external power supply or a backup power supply, and the output end is connected to the MPPT control module (1), so as to provide a stable power supply for the system; The magnetic coupling circuit module (3) is connected to the MPPT control module (1), receives the control signal of the MPPT control module, realizes efficient energy transmission, and converts energy input into electric energy available to the system; The charging circuit module (5) is connected to the magnetic coupling circuit module (3) and the adaptive control module (7) respectively, and is used to receive the electric energy transmitted by the magnetic coupling circuit module (3), and to exchange information with the adaptive control module through a communication interface and receive the charging strategy signal sent by the adaptive control module; The system monitoring and protection module (6) is connected to the MPPT control module (1) and is used to detect real-time parameter information of the system and issue abnormal alarm signals or protection instructions; The communication control module (2) is connected to the MPPT control module (1) to enable communication between the system and external equipment.

2. The MPPT-magnetic coupling circuit adaptive control system according to claim 1, characterized in that: The MPPT control module (1) comprises a single chip microcomputer.

3. The MPPT-magnetic coupling circuit adaptive control system according to claim 2, characterized in that: The power management module (4) comprises a mains and solar power input circuit unit, a transmitting circuit unit, and a receiving conversion circuit unit.

4. The MPPT-magnetic coupling circuit adaptive control system according to claim 3, characterized in that: The transmitting circuit unit further includes a driving circuit and a resonant circuit, and the resonant circuit includes a transmitting coil; the receiving conversion circuit unit further includes a receiving coil, a rectifying and filtering circuit, and a voltage stabilizing circuit.

5. The MPPT-magnetic coupling circuit adaptive control system according to claim 1, characterized in that: The system monitoring and protection module (6) includes an overcurrent protection circuit, an overvoltage protection circuit and a short-circuit protection circuit mechanism to ensure the safe operation of the system under abnormal conditions.

6. The MPPT-magnetic coupling circuit adaptive control system according to claim 2, characterized in that: The communication control module (2) includes a Wi-Fi module or a Bluetooth module.

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