Overload inverter and overload method thereof

Abstract

The inverter comprises a DC input module used for DC power supply input, a push-pull type / full-bridge driving module used for transmitting the DC power supply to a load, and a DC high-voltage module used for boosting the DC power supply transmitted to the load, the system comprises a push-pull type / full-bridge driving module, an inverter circuit module used for converting a boosted direct-current power supply into an alternating-current power supply, an AC output module used for outputting the converted alternating-current power supply, a protection module used for avoiding overload short circuit of the push-pull type / full-bridge driving module, and a constant power detection module used for detecting the power of the AC output module, the CPU control module is used for controlling the protection circuit module and the constant power detection module; the inverter capable of being overloaded can maintain overload operation within a certain load under the condition that the load exceeds the limit power, and can maintain the stability of input voltage or output power.

Description

Technical Field

[0001] The invention relates to an overloadable inverter and an overloading method thereof. Background Art

[0002] In modern power systems and electronic equipment, overload protection is one of the key elements to ensure the safety and stable operation of the system. However, traditional overload protection technology has certain limitations in some aspects, which has prompted the exploration and research of new overload protection technology.

[0003] Traditional overload protection technology often has the following major defects:

[0004] Limited protection capability: Traditional overload protection technology may have limited protection capabilities when dealing with load changes or overload conditions. For example, some traditional protection devices may only have a single protection function, such as overcurrent protection or overheating protection, and cannot continue to output current to maintain device operation in an overload environment.

[0005] Traditional overload protection technology usually only focuses on a single protection function, such as protection against current or temperature, but lacks comprehensive protection for other aspects of the system, such as input voltage stability or output power stability. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide an inverter and an overloading method thereof which can maintain overload operation within a certain load when the load exceeds the rated power and can maintain stability of input voltage or output power.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] An overloadable inverter includes a DC input module for DC power input, a push-pull / full-bridge drive module for transmitting the DC power to a load, a DC high-voltage module for boosting the DC power transmitted to the load, an inverter circuit module for converting the boosted DC power into an AC power, an AC output module for outputting the converted AC power, a protection module for preventing the push-pull / full-bridge drive module from overloading and short-circuiting, a constant power detection module for detecting the power of the AC output module, and a CPU control module for controlling the protection circuit module and the constant power detection module.

[0009] Preferably, an input filter module is also included for filtering the DC input power supply.

[0010] Preferably, a switching power supply module for controlling the opening and closing of the DC input module is also included, and the switching power supply module is connected to the CPU control module.

[0011] Preferably, an isolation circuit module is also included for isolating the DC power input and AC power output in the push-pull / full-bridge drive module.

[0012] Another technical problem to be solved by the present invention is to provide an overloading method for an overloadable inverter, comprising the following steps:

[0013] The constant power detection module detects the current power according to the voltage and current fed back from the AC output module, and sends the power data to the CPU control module;

[0014] When the power data exceeds the preset threshold, the CPU control module controls the inverter circuit module to reduce the output voltage to maintain the output power;

[0015] When the protection circuit induction voltage drops to a preset threshold, the AC output module is cut off and judged as overload.

[0016] Preferably, after the protection circuit cuts off the AC output module, the CPU control module drives the switching power supply module to restart. If it is cut off again after restarting, it will restart in a cycle until the number of restarts reaches a preset upper limit, then stop restarting and enter lock.

[0017] Preferably, after the protection circuit cuts off the AC output module, the CPU control module drives the switch power supply module to lock.

[0018] Preferably, after the switch power supply module is locked, the DC input module is unlocked when it is disconnected from the DC power supply input and connected again.

[0019] Another technical problem to be solved by the present invention is to provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an overloading method for an overloadable inverter as described above is implemented.

[0020] Another technical problem to be solved by the present invention is to provide a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements an overloading method for an overloadable inverter as described in any one of the above.

[0021] The beneficial effects of the present invention are:

[0022] This solution adopts multiple protection mechanisms, including push-pull / full-bridge drive module, CPU control module, input filter module and isolation circuit module, etc., to cope with overload conditions. This comprehensive protection system can provide more reliable overload protection and reduce the risk of system damage; the output voltage has a wider adjustable range. Through the precise control of the inverter circuit module by the CPU control module, the output voltage can be precisely adjusted, making the output voltage adjustable in a wider range and able to meet the needs of overload, rather than the inverter on the market that will cut off the power supply once overloaded; the use of a constant power detection module can monitor the power status of the AC output module in real time, thereby achieving stable control of the output power and improving the power stability and response speed of the system; the solution integrates multiple functional modules, such as DC input module, push-pull / full-bridge drive module, DC high-voltage module, inverter circuit module, AC output module, etc., as well as corresponding protection modules and control modules, making the entire system more integrated and reducing the complexity and cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a principle block diagram of an overloadable inverter of the present invention;

[0024] Figure 2 A circuit diagram of a main control chip of an overloadable inverter of the present invention;

[0025] Figure 3 An inverter boost circuit diagram of an overloadable inverter of the present invention;

[0026] Figure 4 A circuit diagram of a power supply part of an overloadable inverter of the present invention;

[0027] Figure 5 The present invention is a circuit diagram of an overcurrent protection part of an inverter capable of overloading;

[0028] Figure 6 A circuit diagram of a DC-to-AC part of an overloadable inverter of the present invention;

[0029] Figure 7 The product structure diagram of an overloadable inverter of the present invention. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described more specifically by way of example in the following paragraphs. According to the following description and claims, the advantages and features of the present invention will become clearer.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Example

[0033] See also Figure 1-7 As shown, an overloadable inverter includes a DC input module for DC power input, a push-pull / full-bridge drive module for transmitting the DC power to a load, a DC high-voltage module for boosting the DC power transmitted to the load, an inverter circuit module for converting the boosted DC power into an AC power, an AC output module for outputting the converted AC power, a protection module for preventing the push-pull / full-bridge drive module from overloading and short-circuiting, a constant power detection module for detecting the power of the AC output module, and a CPU control module for controlling the protection circuit module and the constant power detection module.

[0034] The inverter uses a DC high-voltage module to boost the input DC power supply, and then converts the boosted DC power supply into AC power supply through the inverter circuit module. This power conversion method is relatively efficient, which can minimize energy loss and improve the energy utilization rate of the system; the CPU control module controls the inverter circuit module to achieve precise adjustment of the output voltage and frequency, so that the inverter can adapt to the needs of different loads and provide flexible output adjustment functions.

[0035] The inverter has built-in protection modules, such as the protection module for preventing push-pull / full-bridge driver modules from overload and short circuit. These protection mechanisms can effectively protect the inverter and its load from various faults and abnormal conditions, improving the stability and reliability of the system; the constant power detection module can monitor the power of the AC output module in real time, thereby achieving stable control of the output power. This helps ensure that the system can maintain stable power output under various working conditions and provide reliable power supply.

[0036] The inverter is designed to be overloadable, which means it can withstand additional load within a certain range without damaging the system. This capability allows the inverter to maintain stable operation when dealing with sudden load changes or temporary load increases; the entire system integrates multiple modules, and the CPU control module controls and coordinates each module in a unified manner. This integrated control method simplifies system management and maintenance and improves the overall performance and reliability of the system.

[0037] It also includes an input filter module for filtering the DC input power supply, a switching power supply module for controlling the opening and closing of the DC input module, the switching power supply module is connected to the CPU control module, and an isolation circuit module for isolating the DC power input and AC power output in the push-pull / full-bridge drive module.

[0038] The input filter module is used to filter the DC input power supply, which can effectively remove high-frequency noise and interference in the input power supply, improve the system's requirements for stable power supply, and thus enhance the stability and reliability of the entire system; the switching power supply module is used to control the opening and closing of the DC input module. By connecting with the CPU control module, flexible control of the DC input module can be achieved. This flexibility enables the system to turn the power on and off according to actual needs, thereby effectively managing energy consumption and system operation status.

[0039] The isolation circuit module is used to isolate the DC power input and AC power output in the push-pull / full-bridge driver module. This isolation can effectively prevent the interference of the DC power supply from being transmitted to the AC power output, while protecting the system and load from electrical faults and short circuits, improving the safety and stability of the system; connecting the switching power supply module with the CPU control module can achieve integrated control and coordination of the entire system. This integrated advantage enables the system to achieve more efficient energy management and intelligent control, improving the overall performance and reliability of the system.

[0040] Taking into account the functions of modules such as input filtering, switch control, and electrical isolation, this solution can effectively improve the stability, reliability, and safety of the inverter system, while achieving flexible management and control of the power supply, providing comprehensive support and guarantee for the operation of the system.

[0041] An overloading method for an overloadable inverter comprises the following steps:

[0042] The constant power detection module detects the current power according to the voltage and current fed back from the AC output module, and sends the power data to the CPU control module;

[0043] When the power data exceeds the preset threshold, the CPU control module controls the inverter circuit module to reduce the output voltage to maintain the output power;

[0044] When the protection circuit induction voltage drops to a preset threshold, the AC output module is cut off and judged as overload.

[0045] This method can protect the inverter from overload according to the preset power threshold, ensuring that the system will not be damaged or cause safety hazards due to power overload during operation; when the power data exceeds the preset threshold, the output voltage is reduced by controlling the inverter circuit module to maintain the output power. This helps to keep the system output within a controllable range and avoid the impact of overload on the normal operation of the system.

[0046] The constant power detection module monitors the voltage and current of the AC output module in real time, which can detect power overload in time and improve the system's ability to perceive abnormal conditions; when the protection circuit sensing voltage drops to the preset threshold, the AC output module is triggered to cut off and judged as overload. This automatic cut-off protection mechanism effectively prevents overload from continuing to damage the system.

[0047] The constant power detection module calculates the current power in real time by monitoring the voltage and current of the AC output module, and sends the power data to the CPU control module; after receiving the power data, the CPU control module compares it with the preset power threshold. When the power data exceeds the preset threshold, the CPU control module controls the inverter circuit module to reduce the output voltage to maintain the output power within an acceptable range; at the same time, the CPU control module monitors the protection circuit induction voltage. When the voltage drops to the preset threshold, the AC output module is triggered to cut off and it is judged as an overload. Such an overload protection mechanism can cut off the output in time to prevent the overload from continuing to damage the system.

[0048] After the protection circuit cuts off the AC output module, the CPU control module drives the switching power supply module to restart. If it is cut off again after restarting, it will restart in a cycle until the number of restarts reaches the preset upper limit, then the restart will stop and enter the lock state. After the protection circuit cuts off the AC output module, the CPU control module drives the switching power supply module to lock. After the switching power supply module is locked, the DC input module is unlocked when it is disconnected from the DC power input and connected again.

[0049] The system can try to fix the problem by itself through the mechanism of automatic restart after the AC output module is cut off. If the problem is temporary or solvable, the system can resume normal operation after restart without human intervention; this solution realizes automatic monitoring and processing of system status, and can perform restart and lock operations without human intervention. This improves the automation of the system and reduces the dependence on human resources.

[0050] Automatic restart and lock can deal with system problems in a timely manner, reduce system downtime, improve system availability and stability, thereby reducing maintenance costs and the need for manual intervention; cyclic restart can try to solve some temporary problems, and the lock mechanism can prevent the system from continuously trying to restart when the problem cannot be solved, thereby avoiding the system from falling into an infinite loop restart state and enhancing the stability and reliability of the system; the lock function can stop the automatic restart of the system after the number of restarts reaches the preset upper limit, preventing the system from continuously trying to restart when the problem cannot be solved, thereby reducing potential security risks.

[0051] This embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the overloading method for an overloadable inverter as described above when executing the computer program.

[0052] This embodiment further provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the overloading method for an overloadable inverter as described above are implemented.

[0053] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0054] Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above.

[0055] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. An overloadable inverter, characterized in that: It includes a DC input module for DC power input, a push-pull / full-bridge drive module for transmitting the DC power to the load, a DC high-voltage module for boosting the DC power transmitted to the load, an inverter circuit module for converting the boosted DC power into AC power, an AC output module for outputting the converted AC power, a protection module for preventing the push-pull / full-bridge drive module from overload and short circuit, a constant power detection module for detecting the power of the AC output module, and a CPU control module for controlling the protection circuit module and the constant power detection module.

2. The overloadable inverter according to claim 1, characterized in that: It also includes an input filter module for filtering the DC input power supply.

3. The overloadable inverter according to claim 2, characterized in that: It also includes a switch power module for controlling the on and off of the DC input module, and the switch power module is connected to the CPU control module.

4. The overloadable inverter according to claim 1, characterized in that: The invention also includes an isolation circuit module for isolating a DC power input and an AC power output in a push-pull / full-bridge driving module.

5. A method for overloading an overloadable inverter, characterized in that: The following steps are involved: The constant power detection module detects the current power according to the voltage and current fed back from the AC output module, and sends the power data to the CPU control module; When the power data exceeds the preset threshold, the CPU control module controls the inverter circuit module to reduce the output voltage to maintain the output power; When the protection circuit induction voltage drops to a preset threshold, the AC output module is cut off and judged as overload.

6. The overloading method of the overloadable inverter according to claim 5, characterized in that: After the protection circuit cuts off the AC output module, the CPU control module drives the switch power module to restart. If it is cut off again after restarting, it will restart in a cycle until the number of restarts reaches the preset upper limit, then stop restarting and enter lock.

7. The overloading method of the overloadable inverter according to claim 5, characterized in that: When the protection circuit cuts off the AC output module, the CPU control module drives the switch power supply module to lock.

8. The overloading method of the overloadable inverter according to claim 6 or 7, characterized in that: After the switch power module is locked, the DC input module is unlocked when it is disconnected from the DC power input and connected again.

9. An electronic device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the overloading method of the overloadable inverter as claimed in any one of claims 5 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the overloading method of the overloadable inverter as described in any one of claims 5 to 8 is implemented.

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