Lock inversion method and lock inverter circuit

Abstract

The present application relates to the technical field of power supply switching, and to a lock inversion method and a lock inverter circuit. The method is applied to power supply switching between mains power and UPS inverter output, and comprises: in response to a request, collecting in real time first parameter information of a mains power end and second parameter information of a UPS inverter end; determining the voltage state of the mains power end on the basis of the first parameter information and the second parameter information; and on the basis of the voltage state of the mains power end, determining whether the second parameter information needs to be adjusted, so that the second parameter information is kept consistent with the first parameter information. The present application has the effect of avoiding current backflow between the mains power end and the UPS inverter end.

Description

A locked inverter method and locked inverter circuit Technical Field

[0001] The present application relates to the technical field of power supply switching, and in particular to a locked inverter method and a locked inverter circuit. Background Art

[0002] The STS dual-channel power conversion module is primarily used for switching between two power sources, creating an automatic, one-to-one power switching system. STS is widely used in data centers, communications rooms, power industry automation systems, petrochemical power supply systems, intelligent building automation and security systems, and other critical equipment applications where power supply terminals are extremely sensitive.

[0003] When dual power supplies are used for power supply switching, one power supply is switched to another. When the voltage phase and voltage frequency of the two power supplies are inconsistent, there will be a voltage difference between the two power supplies, which will cause current backflow between the two power supplies and cause damage to the power supplies. Summary of the Invention

[0004] The purpose of the present application is to provide a locked inverter method and a locked inverter circuit to solve the problem of current backflow when multiple power supplies are switched.

[0005] In a first aspect, the present application provides a lock inversion method, which adopts the following technical solution:

[0006] A locked inverter method is applied to the power conversion process between mains power and UPS inverter output, including:

[0007] In response to the request, first parameter information of the mains end and second parameter information of the UPS inverter end are collected in real time;

[0008] determining a voltage state of the mains terminal according to the first parameter information and the second parameter information;

[0009] It is determined whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal so that the second parameter information is consistent with the first parameter information.

[0010] By adopting the above technical solution, the first parameter information of the mains end and the second parameter information of the UPS inverter end are collected respectively, and the voltage state of the mains end is determined based on the collected first parameter information and second parameter information. And based on the determined voltage state of the mains end, it is judged whether the second parameter information needs to be adjusted to ensure that the second parameter information is consistent with the first parameter information, so that when switching the power supply, the current backflow between the mains end and the UPS inverter end can be avoided.

[0011] Optionally, the real-time collection of the first parameter information of the mains end and the second parameter information of the UPS inverter end in response to the request specifically includes:

[0012] Get the request instruction;

[0013] According to the request instruction, the voltage phase and voltage frequency of the mains terminal are collected in real time through the first detection circuit in the STS dual-way power conversion module;

[0014] According to the request instruction, the voltage phase and voltage frequency of the UPS inverter end are collected in real time through the second detection circuit in the STS dual-path power conversion module.

[0015] By adopting the above technical solution, by setting the first detection circuit and the second detection circuit in the STS dual-way power conversion module, it is possible to conveniently collect the voltage phase and voltage frequency of the mains end and the voltage phase and voltage frequency of the UPS inverter end in real time.

[0016] Optionally, determining the voltage state of the mains terminal according to the first parameter information and the second parameter information specifically includes:

[0017] Determine whether the voltage phase and voltage frequency of the mains terminal are consistent with the voltage phase and voltage frequency of the UPS inverter terminal according to preset rules;

[0018] If the voltage phase and voltage frequency of the mains end are consistent with the voltage phase and voltage frequency of the UPS inverter end, the voltage of the mains end is in a stable state;

[0019] If the voltage phase and voltage frequency of the mains end are inconsistent with the voltage phase and voltage frequency of the UPS inverter end, the voltage of the mains end is in an unstable state.

[0020] By adopting the above technical solution, the voltage state of the mains end is conveniently determined by judging whether the voltage phase and voltage frequency of the mains end are consistent with the voltage phase and voltage frequency of the UPS inverter end.

[0021] Optionally, the determining whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal so that the second parameter information is consistent with the first parameter information specifically includes:

[0022] If the voltage at the mains end is in the stable state, there is no need to adjust the voltage phase and voltage frequency at the UPS inverter end;

[0023] If the voltage at the mains end is in an unstable state, the type of the unstable state is determined, and the types of the unstable state include a sudden change state and a power-off state. When the unstable state is a sudden change state, the voltage phase and voltage frequency of the UPS inverter end are adjusted using a first adjustment method. When the unstable state is a power-off state, the voltage phase and voltage frequency of the UPS inverter end are adjusted using a second adjustment method.

[0024] By adopting the above technical solution, when the voltage at the mains end is in a stable state, there is no need to adjust the voltage phase and voltage frequency at the UPS inverter end. When the voltage at the mains end is in a sudden change state, the first adjustment method is used to adjust the voltage phase and voltage frequency at the UPS inverter end. When the voltage at the mains end is in a power-off state, the second adjustment method is used to adjust the voltage phase and voltage frequency at the UPS inverter end. This makes it convenient to judge whether the voltage phase and voltage frequency at the UPS inverter end need to be adjusted and how to adjust them according to the state of the mains end voltage.

[0025] Optionally, the adjusting the voltage phase and voltage frequency of the UPS inverter terminal by adopting the first adjustment method specifically includes:

[0026] Gradually change the voltage phase and voltage frequency of the UPS inverter end to the voltage phase and voltage frequency of the mains end.

[0027] By adopting the above technical solution, the voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency of the mains end, so that when the voltage of the mains end suddenly changes, the UPS inverter end is provided with an adjustment buffer time, so that current circulation will not be generated between each UPS, causing damage to the UPS. After adjustment, the voltage phase and voltage frequency of the UPS inverter end are finally made consistent with the mains end.

[0028] Optionally, the adopting the second adjustment method to adjust the voltage phase and voltage frequency of the UPS inverter terminal specifically includes:

[0029] The voltage phase and voltage frequency at the moment before the mains power outage are collected, and the voltage phase and voltage frequency at the UPS inverter end are gradually changed to the voltage phase and voltage frequency at the moment before the mains power outage.

[0030] By adopting the above technical solution, by collecting the voltage phase and voltage frequency at the moment before the mains power outage, and gradually changing and maintaining the voltage phase and voltage frequency at the UPS inverter end to the voltage phase and voltage frequency at the moment before the mains power outage, when the mains power outage occurs, an adjustment buffer time can be provided to the UPS inverter end, so that current circulation will not be generated between the various UPSs, causing damage to the UPS.

[0031] Optionally, if the AC power end is restored to power, the voltage phase and voltage frequency after the AC power end is powered on are collected, and when the voltage phase and voltage frequency of the UPS inverter end are inconsistent with the voltage phase and voltage frequency after the AC power end is powered on, the voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency after the AC power end is powered on.

[0032] By adopting the above technical solution, when the AC power end is restored to power, the voltage phase and voltage frequency after the AC power end is powered on are collected, and the voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency after the AC power end is powered on, thereby providing the UPS inverter end with an adjustment buffer time, thereby avoiding the generation of current circulation between each UPS and avoiding the formation of current backflow between the AC power end and the UPS inverter end.

[0033] In a second aspect, the present application provides a lock inverter circuit, which adopts the following technical solution:

[0034] A locking inverter circuit is used in the power conversion process between mains power and UPS inverter output, including:

[0035] A collection module, configured to collect first parameter information of the mains end and second parameter information of the UPS inverter end in real time in response to a request;

[0036] a determination module, configured to determine a voltage state of the mains terminal according to the first parameter information and the second parameter information;

[0037] A judgment module is used to judge whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal so that the second parameter information is consistent with the first parameter information.

[0038] By adopting the above technical solution, the first parameter information of the mains end and the second parameter information of the UPS inverter end are respectively collected through the acquisition module, and the voltage state of the mains end is determined according to the collected first parameter information and second parameter information through the determination module, and whether the second parameter information needs to be adjusted according to the determined voltage state of the mains end is determined through the judgment module to ensure that the second parameter information is consistent with the first parameter information, so that when switching the power supply, the current backflow between the mains end and the UPS inverter end can be avoided.

[0039] In a third aspect, the present application provides a terminal that adopts the following technical solution:

[0040] A terminal comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the method of the first aspect when loading the computer program.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0042] A computer-readable storage medium stores a computer program, and when the computer program is loaded by a processor, the method of the first aspect is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a circuit diagram of a dual-power supply system according to an embodiment of the present invention;

[0044] FIG2 is a flow chart of the method of steps S100-S300 in an embodiment of the present application;

[0045] FIG3 is a flow chart of steps S110 to S130 in an embodiment of the present application;

[0046] FIG4 is a flow chart of the method of steps S210-S230 in an embodiment of the present application;

[0047] FIG5 is a flow chart of steps S310-S320 in an embodiment of the present application;

[0048] FIG6 is a graph showing a gradual change in the inverter side of a UPS according to an embodiment of the present application;

[0049] FIG7 is a module frame diagram of the lock inverter circuit of the present application;

[0050] In the figure, 1. Acquisition module; 2. Determination module; 3. Judgment module. DETAILED DESCRIPTION

[0051] The present application is further described in detail below with reference to Figures 1 to 7.

[0052] Referring to Figure 1, which is a circuit diagram of the dual power supply in the embodiment of the application, it includes a mains power supply module, a UPS power supply module and an STS dual power conversion module, wherein the mains power supply module and the UPS power supply module are respectively connected to the STS dual power conversion module. That is, when the mains power supply module fails, the STS dual power conversion module can be used to switch the power supply from the mains power supply module to the UPS power supply module, thereby ensuring uninterrupted power supply to the load.

[0053] Among them, there can be multiple UPS power supply modules, and multiple UPS power supply modules can be connected in parallel, thereby improving the power supply stability of the UPS power supply module. Specifically, the UPS power supply module can be charged by power supply or AC power.

[0054] The STS dual-channel power conversion module means: when one UPS power supply module fails, it automatically disconnects the originally connected channel and connects the originally disconnected channel, connecting the load to the other power supply, improving power supply stability and introducing a bypass circuit to avoid the impact of power outages caused by UPS power supply module damage. Since the circuit is equipped with multiple UPS power supply modules, when power is cut off, if you want to seamlessly switch to another power supply, you need to ensure that the phase voltage value and frequency are the same. Otherwise, there will be a voltage difference, causing current backflow and damaging the UPS power supply module.

[0055] In this embodiment, the output end of the AC power supply module is the AC power end, and the output end of the UPS power supply module is the UPS inverter end.

[0056] The present application discloses a locked inverter method, referring to FIG. 2 , which is applied to a process of converting power between mains power and UPS inverter output, and specifically includes the following steps:

[0057] S100: In response to a request, first parameter information of the mains end and second parameter information of the UPS inverter end are collected in real time.

[0058] In one embodiment of the present application, referring to FIG. 3 , step S100 specifically includes the following steps:

[0059] S110: Get a request instruction.

[0060] In this embodiment, the request instruction can be obtained through manual input or automatic acquisition.

[0061] S120: According to the request instruction, the voltage phase and voltage frequency of the mains end are collected in real time through the first detection circuit in the STS dual-channel power conversion module.

[0062] Among them, in this embodiment, a first detection circuit can be set in the STS dual-way power conversion module, so as to facilitate the use of the first detection circuit to collect the voltage phase and voltage frequency of the mains end in real time, so as to monitor the voltage parameters of the mains end in real time.

[0063] S130: According to the request instruction, the voltage phase and voltage frequency of the UPS inverter end are collected in real time through the second detection circuit in the STS dual-path power conversion module.

[0064] Among them, in this embodiment, a second detection circuit can be set in the STS dual-power conversion module, so as to facilitate the use of the second detection circuit to collect the voltage phase and voltage frequency of the UPS inverter end in real time, so as to monitor the voltage parameters of the UPS inverter end in real time.

[0065] S200: Determine a voltage state of the mains terminal according to the first parameter information and the second parameter information.

[0066] In one embodiment of the present application, referring to FIG. 4 , step S200 specifically includes the following steps:

[0067] S210: Determine whether the voltage phase and voltage frequency of the mains terminal are consistent with the voltage phase and voltage frequency of the UPS inverter terminal according to a preset rule.

[0068] Among them, in this embodiment, a judgment and comparison module is provided in the STS dual power conversion module, the first detection circuit transmits the real-time detected voltage phase and voltage frequency of the AC power end to the judgment and comparison module, and the second detection circuit transmits the real-time detected voltage phase and voltage frequency of the UPS inverter end to the judgment and comparison module, and then the judgment and comparison module determines whether the voltage phase of the AC power end is consistent with the voltage phase of the UPS inverter end, and at the same time determines whether the voltage frequency of the AC power end is consistent with the voltage frequency of the UPS inverter end.

[0069] S220: If the voltage phase and the voltage frequency of the utility power end are consistent with the voltage phase and the voltage frequency of the UPS inverter end, the voltage of the utility power end is in a stable state.

[0070] S230: If the voltage phase and the voltage frequency of the utility power end are inconsistent with the voltage phase and the voltage frequency of the UPS inverter end, the voltage of the utility power end is in an unstable state.

[0071] Among them, in this embodiment, since the output voltage of the UPS power supply module is relatively stable when the UPS power supply module is supplying power, some sudden conditions may occur when the AC power supply module is supplying power, resulting in the voltage phase and voltage frequency of the AC end being inconsistent with the voltage phase and voltage frequency of the UPS inverter end. If the voltage parameters of the two are inconsistent, it may cause current backflow between the AC power supply module and the UPS power supply module. Therefore, when the voltage phase and voltage frequency of the AC end are consistent with the voltage phase and voltage frequency of the UPS inverter end, it can be determined that the voltage of the AC end is in a stable state. Conversely, when the voltage phase and voltage frequency of the AC end are inconsistent with the voltage phase and voltage frequency of the UPS inverter end, it can be determined that the voltage of the AC end is in an unstable state.

[0072] S300: Determine whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal, so that the second parameter information is consistent with the first parameter information.

[0073] In one embodiment of the present application, referring to FIG. 5 , step S300 specifically includes the following steps:

[0074] S310: If the voltage at the utility power end is stable, there is no need to adjust the voltage phase and voltage frequency at the UPS inverter end.

[0075] Among them, in this embodiment, when the voltage at the mains end is in a stable state, that is, the voltage phase and voltage frequency at the mains end are consistent with the voltage phase and voltage frequency at the UPS inverter end, there is no need to adjust the voltage phase and voltage frequency at the UPS inverter end.

[0076] S320: If the voltage at the mains end is in an unstable state, determine the type of the unstable state, which includes a sudden change state and a power-off state. When the unstable state is a sudden change state, use the first adjustment method to adjust the voltage phase and voltage frequency at the UPS inverter end. When the unstable state is a power-off state, use the second adjustment method to adjust the voltage phase and voltage frequency at the UPS inverter end.

[0077] The mutation state in this embodiment includes a mutation caused by a fault in the mains power supply module and a mutation caused by a fluctuation in the mains power supply module.

[0078] Among them, in this embodiment, when the voltage at the mains end is in an unstable state, that is, the voltage phase and voltage frequency at the mains end are inconsistent with the voltage phase and voltage frequency at the UPS inverter end, it is necessary to first obtain the type of unstable state. If the unstable state is a sudden change state, the first adjustment method can be used to adjust the voltage phase and voltage frequency at the UPS inverter end. If the unstable state is a power-off state, the second adjustment method can be used to adjust the voltage phase and voltage frequency at the UPS inverter end.

[0079] In one embodiment of the present application, when the first adjustment method is used to adjust the voltage phase and voltage frequency of the UPS inverter end, the following steps are specifically included:

[0080] Gradually change the voltage phase and voltage frequency of the UPS inverter end to the voltage phase and voltage frequency of the mains end.

[0081] The gradual change in this embodiment is a slow change.

[0082] Among them, in this embodiment, the first detection circuit in the STS dual-power conversion module will continuously detect the voltage phase and voltage frequency of the AC power end in real time, and synchronize the detected voltage phase and voltage frequency of the AC power end to the UPS power supply module, so that the UPS power supply module changes slowly according to the synchronization signal, and then controls the voltage phase and voltage frequency of each UPS inverter end to slowly change to the mutation point, so that no current circulation will be generated between each UPS power supply module.

[0083] In this embodiment, the voltage phase and voltage frequency of the UPS inverter end are slowly changed to the voltage phase and voltage frequency of the mains end. The specific change curve is shown in Figure 6. Then, when the voltage of the mains end suddenly changes, for example, when the voltage frequency of the mains end suddenly changes from 50HZ to 60HZ, since there are multiple UPS power supply modules, the UPS inverter end cannot follow the sudden change of the mains end in time and change from 50HZ to 60HZ in time, which may cause current to form a circulation between multiple UPS power supply modules, causing damage to the UPS power supply modules. At this time, the STS dual-power conversion module will send a slowly changing signal to the UPS inverter end to provide a buffer change time for the multiple UPS power supply modules, thereby making the voltage frequency of the multiple UPS power supply modules slowly change from 50HZ to 60HZ, thereby ensuring the synchronization of changes of the multiple UPS power supply modules to avoid the formation of current circulation between the multiple UPS power supply modules.

[0084] In one embodiment of the present application, when the second adjustment method is used to adjust the voltage phase and voltage frequency of the UPS inverter end, the method specifically includes:

[0085] The voltage phase and voltage frequency at the moment before the mains power outage are collected, and the voltage phase and voltage frequency at the UPS inverter end are gradually changed to the voltage phase and voltage frequency at the moment before the mains power outage.

[0086] The gradual change in this embodiment is a slow change.

[0087] Among them, in this embodiment, a DSP auxiliary power supply is provided in the STS dual-way power conversion module, and when the mains power end is powered off, the DSP auxiliary power supply can be used to power the first detection circuit, so that when the mains power end is powered off, the first detection circuit is used to collect the voltage phase and voltage frequency of the mains power end, which is used to maintain the transmission of the synchronization signal, so that the normal operation of the STS dual-way power conversion module can still be maintained when the mains power supply module is powered off.

[0088] Among them, in this embodiment, when the AC power end is powered off, the voltage phase and voltage frequency of the AC power end detected in real time by the first detection circuit in the STS dual-power conversion module will become empty. At this time, it is necessary to collect the voltage phase and voltage frequency of the AC power end at the moment before the power off through the first detection circuit.

[0089] Among them, in this embodiment, the first detection circuit in the STS dual-power conversion module transmits the collected voltage phase and voltage frequency of the mains end at the moment before the mains power outage to the UPS inverter end, so that the voltage phase and voltage frequency of the UPS inverter end slowly change to the voltage phase and voltage frequency of the mains end at the moment before the mains power outage, and then the voltage phase and voltage frequency of the UPS inverter end can be maintained at the voltage phase and voltage frequency of the mains end at the moment before the mains power outage, thereby providing sufficient buffer time for each UPS power supply module to change the voltage phase and voltage frequency of each UPS power supply module to the voltage phase and voltage frequency of the mains end at the moment before the mains power outage, so as to avoid the UPS power supply modules being out of synchronization and causing current to form a circulation between the UPS power supply modules.

[0090] Among them, in one embodiment of the present application, if the AC power end is restored to power, the voltage phase and voltage frequency after the AC power end is powered on are collected, and when the voltage phase and voltage frequency of the UPS inverter end are inconsistent with the voltage phase and voltage frequency after the AC power end is powered on, the voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency after the AC power end is powered on.

[0091] In this embodiment, when the mains power supply is cut off, the second detection circuit of the STS dual-path power conversion module will continue to detect the voltage phase and voltage frequency of the UPS inverter end.

[0092] Among them, in this embodiment, when the AC power end is restored to normal, the voltage phase and voltage frequency after the AC power end is powered on are collected by the first detection circuit in the STS dual-way power conversion module, and the collected voltage phase and voltage frequency after the AC power end is powered on are transmitted to the UPS inverter end, and when the voltage phase and voltage frequency of the UPS inverter end are inconsistent with the voltage phase and voltage frequency after the AC power end is powered on, the voltage phase and voltage frequency of the UPS inverter end are slowly adjusted to the voltage phase and voltage frequency after the AC power end is powered on, thereby ensuring that the voltage parameters of the UPS inverter end are synchronized with the voltage parameters of the AC power end, so as to avoid current backflow between the AC power supply module and the UPS power supply module, causing damage to the UPS power supply module.

[0093] The implementation principle of the embodiment of the present application is: the voltage phase and voltage frequency of the AC power end are collected in real time through the first detection circuit, and the voltage phase and voltage frequency of the UPS inverter end are collected in real time through the second detection circuit, and when the voltage phase and voltage frequency of the UPS inverter end are inconsistent with the voltage phase and voltage frequency of the AC power end, the voltage phase and voltage frequency of the UPS inverter end are controlled to slowly adjust to the voltage phase and voltage frequency of the AC power end, so as to keep the voltage phase and voltage frequency of the UPS inverter end synchronized with the voltage phase and voltage frequency of the AC power end, thereby solving the problem of voltage difference between the AC power supply module and the UPS power supply module, so that when switching between the AC power supply module and the UPS power supply module, the phenomenon of current backflow between the AC power supply module and the UPS power supply module can be avoided, causing damage to the UPS power supply module.

[0094] An embodiment of the present application discloses a locking inverter circuit, referring to FIG7 , which is applied to the power supply conversion process between AC power and UPS inverter output, and specifically includes an acquisition module 1, a determination module 2, and a judgment module 3; wherein, with the aid of the acquisition module 1, first parameter information of the AC power end and second parameter information of the UPS inverter end can be collected in real time in response to a request; with the aid of the determination module 2, the voltage state of the AC power end can be determined based on the first parameter information and the second parameter information; with the aid of the judgment module 3, whether the second parameter information needs to be adjusted based on the voltage state of the AC power end so that the second parameter information is consistent with the first parameter information.

[0095] The locked inverter circuit of this embodiment adopts the locked inverter method of the above embodiment in specific application, so the specific application of the locked inverter circuit of this embodiment will not be described in detail here.

[0096] An embodiment of the present application discloses a terminal, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor loads the computer program and executes the lock inversion method of the above embodiment.

[0097] In one embodiment of the present application, the terminal may be a desktop computer, a laptop computer or a cloud server, and the terminal includes but is not limited to a processor and a memory. For example, the terminal may also include input and output devices, network access devices and a bus, etc.

[0098] In one embodiment of the present application, the processor may be a central processing unit (CPU). Of course, depending on the actual usage, other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. may also be used. The general-purpose processor may be a microprocessor or any conventional processor, etc., and the present application does not impose any restrictions on this.

[0099] In one embodiment of the present application, the memory can be an internal storage unit of the terminal, such as the hard disk or memory of the terminal, or it can be an external storage device of the terminal, such as a plug-in hard disk, smart memory card (SMC), secure digital card (SD) or flash memory card (FC) equipped on the terminal, and the memory can also be a combination of the internal storage unit and the external storage device of the terminal. The memory is used to store computer programs and other programs and data required by the terminal. The memory can also be used to temporarily store data that has been output or is to be output. This application does not impose any restrictions on this.

[0100] An embodiment of the present application discloses a computer-readable storage medium, and a computer program is stored in the computer-readable storage medium. When the computer program is loaded by a processor, the lock inversion method of the above embodiment is executed.

[0101] In one embodiment of the present application, a computer program may be stored in a computer-readable storage medium, and the computer program includes computer program code. The computer program code may be in the form of source code, object code, executable file, or certain middleware, etc. The computer-readable storage medium includes any entity or device that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium, etc. It should be noted that the computer-readable storage medium includes but is not limited to the above-mentioned components.

[0102] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A locking inversion method, applied to the process of converting power supply between AC power and UPS inverter output, characterized in that: include: In response to the request, first parameter information of the mains end and second parameter information of the UPS inverter end are collected in real time; Determining a voltage state of the mains terminal according to the first parameter information and the second parameter information; Whether the second parameter information needs to be adjusted is determined according to the voltage state of the mains terminal so that the second parameter information is consistent with the first parameter information.

2. The lock inversion method according to claim 1, characterized in that: The real-time collection of the first parameter information of the mains end and the second parameter information of the UPS inverter end in response to the request specifically includes: Get request instructions; According to the request instruction, the voltage phase and voltage frequency of the mains terminal are collected in real time through the first detection circuit in the STS dual-way power conversion module; According to the request instruction, the voltage phase and voltage frequency of the UPS inverter end are collected in real time through the second detection circuit in the STS dual-path power conversion module.

3. The lock inversion method according to claim 2, characterized in that: The determining the voltage state of the mains terminal according to the first parameter information and the second parameter information specifically includes: Determine whether the voltage phase and voltage frequency of the mains terminal are consistent with the voltage phase and voltage frequency of the UPS inverter terminal according to a preset rule; If the voltage phase and voltage frequency of the mains terminal are consistent with the voltage phase and voltage frequency of the UPS inverter terminal, the voltage of the mains terminal is in a stable state; If the voltage phase and the voltage frequency of the mains end are inconsistent with the voltage phase and the voltage frequency of the UPS inverter end, the voltage of the mains end is in an unstable state.

4. The lock inversion method according to claim 3, characterized in that: The determining whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal so that the second parameter information is consistent with the first parameter information specifically includes: If the voltage at the mains end is in the stable state, there is no need to adjust the voltage phase and voltage frequency at the UPS inverter end; If the voltage at the AC power end is in an unstable state, the type of the unstable state is determined, and the types of the unstable state include a sudden change state and a power-off state. When the unstable state is a sudden change state, the voltage phase and voltage frequency of the UPS inverter end are adjusted by a first adjustment method. When the unstable state is a power-off state, the voltage phase and voltage frequency of the UPS inverter end are adjusted by a second adjustment method.

5. The lock inversion method according to claim 4, characterized in that: The adopting the first adjustment method to adjust the voltage phase and voltage frequency of the UPS inverter terminal specifically includes: The voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency of the mains end.

6. The lock inversion method according to claim 4, characterized in that: The adopting the second adjustment method to adjust the voltage phase and voltage frequency of the UPS inverter terminal specifically includes: The voltage phase and voltage frequency at the moment before the mains power failure are collected, and the voltage phase and voltage frequency at the UPS inverter end are gradually changed to the voltage phase and voltage frequency at the moment before the mains power failure.

7. The lock inversion method according to claim 6, characterized in that: If the AC power end is restored to power, the voltage phase and voltage frequency after the AC power end is powered on are collected, and when the voltage phase and voltage frequency of the UPS inverter end are inconsistent with the voltage phase and voltage frequency after the AC power end is powered on, the voltage phase and voltage frequency of the UPS inverter end are gradually changed to the voltage phase and voltage frequency after the AC power end is powered on.

8. A lock inverter circuit, used in the process of converting power supply between AC power and UPS inverter output, characterized in that: include: A collection module (1) is used to collect first parameter information of the mains end and second parameter information of the UPS inverter end in real time in response to a request; A determination module (2), configured to determine a voltage state of the mains terminal according to the first parameter information and the second parameter information; A judgment module (3) is used to judge whether the second parameter information needs to be adjusted according to the voltage state of the mains terminal, so that the second parameter information is consistent with the first parameter information.

9. A terminal comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor records the computer program, it executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded by a processor, the method according to any one of claims 1 to 7 is executed.

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