CN113726196B - Midpoint balance control method, device and terminal of Vienna rectifying circuit in power supply - Google Patents

Midpoint balance control method, device and terminal of Vienna rectifying circuit in power supply Download PDF

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Publication number
CN113726196B
CN113726196B CN202111022946.4A CN202111022946A CN113726196B CN 113726196 B CN113726196 B CN 113726196B CN 202111022946 A CN202111022946 A CN 202111022946A CN 113726196 B CN113726196 B CN 113726196B
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rectifying circuit
starting
vienna
fan
power
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CN113726196A (en
Inventor
张晓明
孙宗昌
崔玉洁
钱贺平
田华松
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Zhangzhou Kehua Electric Technology Co Ltd
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Zhangzhou Kehua Electric Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The application provides a midpoint balance control method, a midpoint balance control device and a midpoint balance control terminal of a Vienna rectifying circuit in a power supply, wherein the power supply comprises the Vienna rectifying circuit and a fan, and the output end of the Vienna rectifying circuit is connected with the input end of the fan; the method comprises the following steps: after a start instruction of the Vienna rectifying circuit is obtained, controlling the start of the fan, and recording the start time of the fan; determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit; and adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and taking the first time as the starting time of the Vienna rectifying circuit to control the starting of the Vienna rectifying circuit. The method starts the fan before starting the Vienna rectifying circuit, provides a load for the Vienna rectifying circuit in the starting process, and can avoid the problem that the effect of the midpoint balancing strategy is poor when the Vienna rectifying circuit is started in an idle state.

Description

Midpoint balance control method, device and terminal of Vienna rectifying circuit in power supply
Technical Field
The application relates to the technical field of power electronics, in particular to a neutral point balance control method, a neutral point balance control device and a neutral point balance control terminal of a Vienna rectifying circuit in a power supply.
Background
The Vienna rectifier has simple structure and low device cost, and is a common rectifying device in uninterrupted power supply. Neutral point voltage imbalance is an inherent problem with the VIENNA rectifier, particularly during idle conditions and during start-up, which is more prone to neutral point voltage imbalance.
There are various midpoint voltage balancing strategies at present, however, these midpoint voltage balancing strategies do not take into account the load state and the operational phase of the VIENNA rectifier, and are less effective for the midpoint voltage imbalance problem that occurs with the VIENNA rectifier in the no-load state and during start-up.
Disclosure of Invention
The embodiment of the application provides a midpoint balance control method, a midpoint balance control device and a terminal of a Vienna rectifying circuit in a power supply, which are used for solving the problem that the effect of the conventional midpoint voltage balance strategy on the Vienna rectifying circuit in an idle state and in a starting process is poor.
In a first aspect, an embodiment of the present application provides a method for controlling midpoint balance of a wiener rectifying circuit in a power supply, where the power supply includes the wiener rectifying circuit and a fan, and an output end of the wiener rectifying circuit is connected with an input end of the fan;
the method comprises the following steps:
after a start instruction of the Vienna rectifying circuit is obtained, controlling the start of the fan, and recording the start time of the fan;
acquiring a starting voltage slope of a fan and starting power of a Vienna rectifying circuit, wherein the starting power represents load power required by the Vienna rectifying circuit for realizing midpoint balance in a starting process;
determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit;
and adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and taking the first time as the starting time of the Vienna rectifying circuit to control the starting of the Vienna rectifying circuit.
In one possible implementation, determining the start-up delay of the vienna rectification circuit based on the start-up voltage slope of the blower and the start-up power of the vienna rectification circuit includes:
determining the voltage corresponding to the starting moment of the fan in the Vienna rectifying circuit based on the starting power of the Vienna rectifying circuit;
by the formulaObtaining the starting time delay of the Vienna rectifying circuit;
wherein Deltat represents the start-up time delay of the Vienna rectifying circuit, V S The voltage corresponding to the start time of the Vienna rectifying circuit of the fan is shown, and a is the starting voltage slope of the fan.
In one possible implementation, obtaining the starting voltage slope of the blower includes:
acquiring rated voltage of a fan and starting time of a Vienna rectifying circuit;
by the formulaObtaining a starting voltage slope of the fan so that the fan and the Vienna rectifying circuit finish starting at the same time;
wherein a represents the starting voltage slope of the fan, V F Represents the rated voltage of the fan, V S The voltage corresponding to the starting time of the fan at the starting time of the Vienna rectifying circuit is represented, and T represents the starting time of the Vienna rectifying circuit.
In one possible implementation manner, determining, based on the start-up power of the vienna rectification circuit, a voltage of the blower corresponding to a start-up start time of the vienna rectification circuit includes:
acquiring the minimum working voltage of the fan and a characteristic curve of the fan;
searching a voltage corresponding to the starting power in the characteristic curve;
and taking the larger value of the voltage corresponding to the starting power and the minimum working voltage as the voltage corresponding to the starting moment of the fan at the Vienna rectifying circuit.
In one possible implementation, obtaining the start-up power of the vienna rectification circuit includes:
obtaining rated power and starting time of the Vienna rectifying circuit;
by the formulaObtaining the starting power of the Vienna rectifying circuit;
wherein P is L Represents the starting power of the Vienna rectifier circuit, k represents the empirical coefficient, and P 0 The rated power of the vienna rectifying circuit is represented, and T represents the start-up period of the vienna rectifying circuit.
In a second aspect, an embodiment of the present application provides a midpoint balance control device of a wiener rectifying circuit in a power supply, where the power supply includes the wiener rectifying circuit and a fan, and an output end of the wiener rectifying circuit is connected with an input end of the fan;
the device comprises:
the first starting module is used for controlling the starting of the fan after the starting instruction of the Vienna rectifying circuit is acquired, and recording the starting moment of the fan;
the acquisition module is used for acquiring the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit, wherein the starting power represents the load power required by the Vienna rectifying circuit for realizing midpoint balance in the starting process;
the time delay determining module is used for determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit;
the second starting module is used for adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and controlling the Vienna rectifying circuit to start by taking the first time as the starting time of the Vienna rectifying circuit.
In a third aspect, an embodiment of the present application provides a power supply, including a processor, a wiener rectifying circuit, and a fan, where an output end of the wiener rectifying circuit is connected to an input end of the fan, where the processor executes the computer program to implement the steps of the method according to any one of the possible implementation manners of the first aspect or the first aspect.
In a fourth aspect, embodiments of the present application provide a terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to the first aspect or any one of the possible implementations of the first aspect, when the computer program is executed by the processor.
In a fifth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method of the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the application provides a midpoint balance control method, a midpoint balance control device and a midpoint balance control terminal of a Vienna rectifying circuit in a power supply, wherein the power supply comprises the Vienna rectifying circuit and a fan, and the output end of the Vienna rectifying circuit is connected with the input end of the fan; the method comprises the following steps: after a start instruction of the Vienna rectifying circuit is obtained, controlling the start of the fan, and recording the start time of the fan; acquiring a starting voltage slope of a fan and starting power of a Vienna rectifying circuit, wherein the starting power represents load power required by the Vienna rectifying circuit for realizing midpoint balance in a starting process; determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit; and adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and taking the first time as the starting time of the Vienna rectifying circuit to control the starting of the Vienna rectifying circuit. According to the method, the fan in the power supply is used as a load of the Vienna rectifying circuit, the fan is started before the Vienna rectifying circuit is started, the load is provided for the Vienna rectifying circuit in the starting process, and the problem that the effect of the midpoint balancing strategy is poor when the Vienna rectifying circuit is started in an idle state is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for controlling the midpoint balance of a wiener rectifying circuit in a power supply according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a neutral point balance control device of a wiener rectifying circuit in a power supply according to an embodiment of the application;
fig. 3 is a schematic diagram of a terminal according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a flowchart of an implementation method of a midpoint balance control method of a wiener rectifying circuit in a power supply according to an embodiment of the present application is shown, where the power supply includes the wiener rectifying circuit and a fan, and an output end of the wiener rectifying circuit is connected with an input end of the fan; the method is described in detail as follows:
step 101, after obtaining a start instruction of the Vienna rectifying circuit, controlling the start of the fan, and recording the start time of the fan.
In this embodiment, the fan is a heat dissipation fan in the power supply, and is also used to provide a load for the vienna rectification circuit. Before the start of the Vienna rectifying circuit, the terminal equipment starts the fan by utilizing the current existing in the Vienna rectifying circuit, so that the Vienna rectifying circuit is started under the loaded state, and the occurrence of neutral point unbalance is avoided.
Step 102, obtaining a starting voltage slope of the fan and starting power of the Vienna rectifying circuit, wherein the starting power represents load power required by the Vienna rectifying circuit for realizing midpoint balance in a starting process.
In this embodiment, the starting voltage slope of the fan indicates the voltage increasing rate in the fan starting process, which can be directly set in this embodiment, or can be adjusted according to the parameters of the vienna rectification circuit. The start-up power of the vienna rectifying circuit is affected by the parameters of the vienna rectifying circuit itself, and can be determined by experiments.
And step 103, determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit.
In this embodiment, preferably, when the load power provided by the fan is the start-up power of the wiener rectifying circuit, the wiener rectifying circuit is started up. The terminal device first determines the start-up power of the vienna rectifier circuit and then determines the time difference between the start-up of the blower and the time at which the load power can be provided, which is the start-up delay of the vienna rectifier circuit.
Step 104, adding the start time to the start time delay of the wiener rectifying circuit to obtain a first time, and using the first time as the start time of the start of the wiener rectifying circuit to control the start of the wiener rectifying circuit.
In this embodiment, the load power provided by the fan is the starting power of the wiener rectifying circuit at the first moment, and the wiener rectifying circuit is started at the first moment, so that the midpoint balancing effect of the wiener rectifying circuit is best.
In one possible implementation, determining the start-up delay of the vienna rectification circuit based on the start-up voltage slope of the blower and the start-up power of the vienna rectification circuit includes:
determining the voltage corresponding to the starting moment of the fan in the Vienna rectifying circuit based on the starting power of the Vienna rectifying circuit;
by the formulaObtaining the starting time delay of the Vienna rectifying circuit;
wherein Deltat represents the start-up time delay of the Vienna rectifying circuit, V S The voltage corresponding to the start time of the Vienna rectifying circuit of the fan is shown, and a is the starting voltage slope of the fan.
In this embodiment, the terminal device may calculate that the fan voltage increases from the start time to V based on the voltage corresponding to the start time of the vienna rectification circuit and the start voltage slope of the fan S The time required is the start-up delay of the vienna rectification circuit.
In one possible implementation, obtaining the starting voltage slope of the blower includes:
acquiring rated voltage of a fan and starting time of a Vienna rectifying circuit;
by the formulaObtaining a starting voltage slope of the fan so that the fan and the Vienna rectifying circuit finish starting at the same time;
wherein a represents the starting voltage slope of the fan, V F Represents the rated voltage of the fan, V S The voltage corresponding to the starting time of the fan at the starting time of the Vienna rectifying circuit is represented, and T represents the starting time of the Vienna rectifying circuit.
In this embodiment, the larger the load power, the better the neutral point balancing effect in the start-up process of the vienna rectification circuit. The load provided by the fan for the Vienna rectification circuit in the starting process is higher than the load provided by the fan after the fan is started, and in order to maximize the load provided by the fan, the fan and the Vienna rectification circuit can be arranged to complete the starting simultaneously. From this, it is clear that the fan voltage is determined by the voltage V corresponding to the start time of the fan in the vienna rectifying circuit S Increased to rated voltage V F The required time is the time from starting to finishing of the vienna rectifying circuit, that is, the starting time T of the vienna rectifying circuit. Terminal equipment is based on voltage V corresponding to starting moment of fan in Vienna rectifying circuit S Rated voltage V of fan F And the starting time T of the Vienna rectifying circuit, so that the starting voltage slope of the fan to be set can be calculated. Rated voltage V of fan F The value range of (2) is usually 12-13.2V, and the starting time period T of the Vienna rectifier circuit is usually 0.1-5 s.
In one possible implementation manner, determining, based on the start-up power of the vienna rectification circuit, a voltage of the blower corresponding to a start-up start time of the vienna rectification circuit includes:
acquiring the minimum working voltage of the fan and a characteristic curve of the fan;
searching a voltage corresponding to the starting power in the characteristic curve;
and taking the larger value of the voltage corresponding to the starting power and the minimum working voltage as the voltage corresponding to the starting moment of the fan at the Vienna rectifying circuit.
In this embodiment, the characteristic curve of the fan includes the power of the fan under each voltage, and the voltage corresponding to the starting power can be directly found in the characteristic curve, and then the larger value of the voltage corresponding to the starting power and the minimum working voltage is taken, so as to ensure that the fan can normally operate at the starting time of the vienna rectifying circuit, and provide enough load for the vienna rectifying circuit. The minimum operating voltage of the fan is usually in the range of 5-7V.
In one possible implementation, obtaining the start-up power of the vienna rectification circuit includes:
obtaining rated power and starting time of the Vienna rectifying circuit;
by the formulaObtaining the starting power of the Vienna rectifying circuit;
wherein P is L Represents the starting power of the Vienna rectifier circuit, k represents the empirical coefficient, and P 0 The rated power of the vienna rectifying circuit is represented, and T represents the start-up period of the vienna rectifying circuit.
In this embodiment, the rated voltage of the vienna rectifier circuit is generally 600 to 840V. The empirical coefficients can be obtained by experiments on a vienna rectifier circuit.
The method provided by the embodiment of the application comprises the following steps: after a start instruction of the Vienna rectifying circuit is obtained, controlling the start of the fan, and recording the start time of the fan; acquiring a starting voltage slope of a fan and starting power of a Vienna rectifying circuit, wherein the starting power represents load power required by the Vienna rectifying circuit for realizing midpoint balance in a starting process; determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit; and adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and taking the first time as the starting time of the Vienna rectifying circuit to control the starting of the Vienna rectifying circuit. According to the method, the fan in the power supply is used as a load of the Vienna rectifying circuit, the fan is started before the Vienna rectifying circuit is started, the load is provided for the Vienna rectifying circuit in the starting process, and the problem that the effect of the midpoint balancing strategy is poor when the Vienna rectifying circuit is started in an idle state is avoided.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
The following are device embodiments of the application, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 2 shows a schematic structural diagram of a midpoint balance control device of a wiener rectifying circuit in a power supply according to an embodiment of the application, where the power supply includes the wiener rectifying circuit and a fan, and an output end of the wiener rectifying circuit is connected with an input end of the fan; for convenience of explanation, only the portions related to the embodiments of the present application are shown, and the details are as follows:
as shown in fig. 2, the neutral point balance control device 2 of the vienna rectifying circuit in the power supply includes: .
The first starting module 21 is configured to control the fan to start after acquiring a start instruction of the vienna rectifying circuit, and record a start time of the fan.
The obtaining module 22 is configured to obtain a starting voltage slope of the fan and a starting power of the wiener rectifying circuit, where the starting power represents a load power required by the wiener rectifying circuit to achieve midpoint balance in a starting process.
The delay determining module 23 is configured to determine a start delay of the wiener rectification circuit based on a start voltage slope of the fan and a start power of the wiener rectification circuit.
The second starting module 24 is configured to add a start time delay to the start time of the wiener rectifying circuit to obtain a first time, and control the start of the wiener rectifying circuit by using the first time as a start time of the start of the wiener rectifying circuit.
In one possible implementation, the delay determination module 23 includes:
the voltage determining unit is used for determining the voltage corresponding to the starting moment of the fan at the Vienna rectifying circuit based on the starting power of the Vienna rectifying circuit;
a time determining unit for passing the formulaObtaining the starting time delay of the Vienna rectifying circuit;
wherein Deltat represents the start-up time delay of the Vienna rectifying circuit, V S The voltage corresponding to the start time of the Vienna rectifying circuit of the fan is shown, and a is the starting voltage slope of the fan.
In one possible implementation, the obtaining module 22 is specifically configured to:
acquiring rated voltage of a fan and starting time of a Vienna rectifying circuit;
by the formulaObtaining a starting voltage slope of the fan so that the fan and the Vienna rectifying circuit finish starting at the same time;
wherein a represents the starting voltage slope of the fan, V F Represents the rated voltage of the fan, V S The voltage corresponding to the starting time of the fan at the starting time of the Vienna rectifying circuit is represented, and T represents the starting time of the Vienna rectifying circuit.
In one possible implementation, the voltage determining unit is specifically configured to:
acquiring the minimum working voltage of the fan and a characteristic curve of the fan;
searching a voltage corresponding to the starting power in the characteristic curve;
and taking the larger value of the voltage corresponding to the starting power and the minimum working voltage as the voltage corresponding to the starting moment of the fan at the Vienna rectifying circuit.
In one possible implementation, the obtaining module 22 is specifically configured to:
obtaining rated power and starting time of the Vienna rectifying circuit;
by the formulaObtaining the starting power of the Vienna rectifying circuit;
wherein P is L Represents the starting power of the Vienna rectifier circuit, k represents the empirical coefficient, and P 0 The rated power of the vienna rectifying circuit is represented, and T represents the start-up period of the vienna rectifying circuit.
The device provided by the embodiment of the application comprises: the first starting module 21 is configured to control the fan to start after acquiring a start instruction of the vienna rectifying circuit, and record a start time of the fan. The obtaining module 22 is configured to obtain a starting voltage slope of the fan and a starting power of the wiener rectifying circuit, where the starting power represents a load power required by the wiener rectifying circuit to achieve midpoint balance in a starting process. The delay determining module 23 is configured to determine a start delay of the wiener rectification circuit based on a start voltage slope of the fan and a start power of the wiener rectification circuit. The second starting module 24 is configured to add a start time delay to the start time of the wiener rectifying circuit to obtain a first time, and control the start of the wiener rectifying circuit by using the first time as a start time of the start of the wiener rectifying circuit. The device takes the fan in the power supply as the load of the Vienna rectifying circuit, and starts the fan before starting the Vienna rectifying circuit, so that the load is provided for the Vienna rectifying circuit in the starting process, and the problem that the effect of the midpoint balancing strategy is poor when the Vienna rectifying circuit is started in an idle state is avoided.
Fig. 3 is a schematic diagram of a terminal according to an embodiment of the present application. As shown in fig. 3, the terminal 3 of this embodiment includes: a processor 30, a memory 31 and a computer program 32 stored in said memory 31 and executable on said processor 30. The processor 30 executes the computer program 32 to implement the steps of the embodiment of the method for controlling the midpoint balance of the wiener rectifying circuit in each power supply, for example, steps 101 to 104 shown in fig. 1. Alternatively, the processor 30 may perform the functions of the modules/units of the apparatus embodiments described above, such as the functions of the modules/units 21 to 24 shown in fig. 2, when executing the computer program 32.
Illustratively, the computer program 32 may be partitioned into one or more modules/units that are stored in the memory 31 and executed by the processor 30 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program 32 in the terminal 3. For example, the computer program 32 may be split into the modules/units 21 to 24 shown in fig. 2.
The terminal 3 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The terminal 3 may include, but is not limited to, a processor 30, a memory 31. It will be appreciated by those skilled in the art that fig. 3 is merely an example of the terminal 3 and does not constitute a limitation of the terminal 3, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the terminal may further include an input-output device, a network access device, a bus, etc.
The processor 30 may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 31 may be an internal storage unit of the terminal 3, such as a hard disk or a memory of the terminal 3. The memory 31 may be an external storage device of the terminal 3, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal 3. Further, the memory 31 may also include both an internal storage unit and an external storage device of the terminal 3. The memory 31 is used for storing the computer program as well as other programs and data required by the terminal. The memory 31 may also be used for temporarily storing data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the apparatus/terminal embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by instructing related hardware by a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of the embodiment of the method for controlling midpoint balance of the vienna rectifying circuit in each power supply when the computer program is executed by the processor. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. The midpoint balance control method of the Vienna rectifying circuit in the power supply is characterized in that the power supply comprises the Vienna rectifying circuit and a fan, and the output end of the Vienna rectifying circuit is connected with the input end of the fan;
the method comprises the following steps:
after a starting instruction of the Vienna rectifying circuit is obtained, controlling the fan to start, and recording the starting time of the fan;
acquiring a starting voltage slope of the fan and starting power of the Vienna rectifying circuit, wherein the starting power represents load power required by the Vienna rectifying circuit for realizing midpoint balance in a starting process;
determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit;
and adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and taking the first time as the starting time of the Vienna rectifying circuit to control the starting of the Vienna rectifying circuit.
2. The method of controlling a midpoint balance of a wiener rectifying circuit in a power supply according to claim 1, wherein said determining a start-up delay of the wiener rectifying circuit based on a start-up voltage slope of the blower and a start-up power of the wiener rectifying circuit comprises:
determining the voltage corresponding to the fan at the starting moment of the Vienna rectifying circuit based on the starting power of the Vienna rectifying circuit;
by the formulaObtaining the starting time delay of the Vienna rectifying circuit;
wherein Deltat represents the start-up time delay of the Vienna rectifying circuit, V S The voltage corresponding to the fan at the starting moment of the Vienna rectifying circuit is represented, and a represents the starting voltage slope of the fan.
3. The method of controlling the midpoint balance of a vienna rectifier circuit in a power supply according to claim 2, wherein the obtaining the starting voltage slope of the blower includes:
acquiring rated voltage of the fan and starting time of the Vienna rectifying circuit;
by the formulaObtaining the start of the fanA voltage slope is measured so that the fan and the Vienna rectifying circuit can be started simultaneously;
wherein a represents the starting voltage slope of the fan, V F Represents the rated voltage of the fan, V S And the voltage corresponding to the starting time of the fan at the starting time of the Vienna rectifying circuit is represented, and T represents the starting time of the Vienna rectifying circuit.
4. The method of controlling the midpoint balance of a wiener rectifying circuit in a power supply according to claim 2, wherein the determining the voltage of the blower corresponding to the start-up start time of the wiener rectifying circuit based on the start-up power of the wiener rectifying circuit comprises:
acquiring the minimum working voltage of the fan and a characteristic curve of the fan;
searching a voltage corresponding to the starting power in the characteristic curve;
and taking the larger value of the voltage corresponding to the starting power and the minimum working voltage as the voltage corresponding to the fan at the starting moment of the Vienna rectifying circuit.
5. The method of controlling the midpoint balance of a vienna rectifier circuit in a power supply according to claim 2, wherein obtaining the starting power of the vienna rectifier circuit comprises:
obtaining rated power and starting time of the Vienna rectifying circuit;
by the formulaObtaining the starting power of the Vienna rectifying circuit;
wherein P is L Represents the starting power of the Vienna rectifier circuit, k represents the empirical coefficient, P 0 And T represents the starting time of the Vienna rectifying circuit.
6. The midpoint balance control device of the Vienna rectifying circuit in the power supply is characterized in that the power supply comprises the Vienna rectifying circuit and a fan, and the output end of the Vienna rectifying circuit is connected with the input end of the fan;
the device comprises:
the first starting module is used for controlling the fan to start after acquiring the starting instruction of the Vienna rectifying circuit and recording the starting moment of the fan;
the acquisition module is used for acquiring the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit, wherein the starting power represents the load power required by the Vienna rectifying circuit to realize midpoint balance in the starting process;
the time delay determining module is used for determining the starting time delay of the Vienna rectifying circuit based on the starting voltage slope of the fan and the starting power of the Vienna rectifying circuit;
the second starting module is used for adding the starting time to the starting time delay of the Vienna rectifying circuit to obtain a first time, and controlling the Vienna rectifying circuit to start by taking the first time as the starting time of the Vienna rectifying circuit.
7. The neutral point balance control device of a vienna rectifier circuit in a power supply of claim 6, wherein the delay determination module comprises:
a voltage determining unit, configured to determine a voltage corresponding to the fan at a start time of the wiener rectifying circuit based on the start power of the wiener rectifying circuit;
a time determining unit for passing the formulaObtaining the starting time delay of the Vienna rectifying circuit;
wherein Deltat represents the start-up time delay of the Vienna rectifying circuit, V S A represents a voltage corresponding to the fan at the starting time of the Vienna rectifying circuit, and a represents the voltageThe starting voltage slope of the fan.
8. A power supply comprising a processor, a wiener rectifying circuit and a fan, the output of the wiener rectifying circuit being connected to the input of the fan, characterized in that the processor implements the steps of the method according to any of the preceding claims 1 to 5 when executing a computer program.
9. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of the preceding claims 1 to 5 when the computer program is executed.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any of the preceding claims 1 to 5.
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