CN110912228B - Charge and discharge control method, charge and discharge control device and UPS - Google Patents
Charge and discharge control method, charge and discharge control device and UPS Download PDFInfo
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- CN110912228B CN110912228B CN201911214307.0A CN201911214307A CN110912228B CN 110912228 B CN110912228 B CN 110912228B CN 201911214307 A CN201911214307 A CN 201911214307A CN 110912228 B CN110912228 B CN 110912228B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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Abstract
The invention is suitable for the technical field of uninterruptible power supplies, and provides a charge and discharge control method, a charge and discharge control device and a UPS. The charging and discharging control method is applied to each UPS of at least two UPSs sharing the same battery pack in a parallel operation system, and comprises the following steps: acquiring a carrier synchronization signal, and synchronously adjusting an initial carrier signal of the self-inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the self-inversion module; synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charge-discharge module; and carrying out charge-discharge control on the self charge-discharge module based on the synchronous carrier signal of the self charge-discharge module. The invention can realize the charge-discharge synchronous control of the UPS of the common battery pack in the parallel operation system, and is beneficial to ensuring the stable operation of the parallel operation system.
Description
Technical Field
The invention belongs to the technical field of uninterruptible power supplies, and particularly relates to a charge and discharge control method, a charge and discharge control device, a UPS and a computer readable storage medium.
Background
In some application scenarios of Uninterruptible Power Supplies (UPSs), in order to maximize the efficiency of a battery pack and increase the utilization rate of the battery pack, a scheme that two or more UPSs share the same battery pack is often adopted.
However, in this application scenario, since two or more UPSs sharing the same battery pack need to perform charge and discharge control on the shared battery pack, and high frequency components are generated during the charge and discharge control operation, in this way, when two or more UPSs perform charge and discharge control operations respectively, the high frequency components generated by the two or more UPSs may overlap with each other, which not only affects the normal operation of the battery pack, but also causes interference and influence on the stable operation of the entire UPS system composed of the two or more UPSs.
Disclosure of Invention
In view of the above, the present invention provides a charge and discharge control method, a charge and discharge control apparatus, a UPS and a computer readable storage medium, so as to solve the problem in the prior art that two or more UPSs sharing a battery pack generate high frequency components when performing charge and discharge control operations on the battery pack, thereby affecting the normal operation of the battery pack and the stable operation of the system.
A first aspect of an embodiment of the present invention provides a charge and discharge control method applied to each of at least two UPSs sharing a same battery pack in a parallel operation system, where the charge and discharge control method includes:
acquiring a carrier synchronization signal, and synchronously adjusting an initial carrier signal of the self-inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the self-inversion module;
synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charge-discharge module;
and carrying out charge-discharge control on the self charge-discharge module based on the synchronous carrier signal of the self charge-discharge module.
Based on the first aspect, in a first possible implementation manner, before the obtaining the carrier synchronization signal, and performing synchronization adjustment on the initial carrier signal of the own inversion module based on the carrier synchronization signal, to obtain the synchronization carrier signal of the own inversion module, the method further includes:
judging whether the current UPS is a host or a slave in the parallel operation system;
correspondingly, the acquiring of the carrier synchronization signal and the synchronous adjustment of the initial carrier signal of the self-inversion module based on the carrier synchronization signal include:
if the current UPS is a host in the parallel operation system, generating the carrier synchronization signal based on an initial carrier signal of the self inversion module, and sending the carrier synchronization signal;
and if the current UPS is a slave in the parallel operation system, receiving the carrier synchronization signal sent by the host in the parallel operation system, and synchronously adjusting the initial carrier signal of the self inversion module based on the carrier synchronization signal to obtain the synchronous carrier signal of the self inversion module.
Based on the first possible implementation manner of the first aspect, in a second possible implementation manner, the performing synchronous adjustment on the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inverter module to obtain the synchronous carrier signal of the self charge-discharge module includes:
synchronously adjusting the initial carrier signal of the self-rectification module based on the synchronous carrier signal of the self-inversion module to obtain the synchronous carrier signal of the self-rectification module;
and synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifying module to obtain the synchronous carrier signal of the self charge-discharge module.
Based on the first aspect, in a third possible implementation manner, each UPS is configured with a first DSP controller and a second DSP controller, where the first DSP controller is configured to control the own inverter module, and the second DSP controller is configured to control the own rectifier module and the own charge-discharge module.
Based on the first aspect and any one of the foregoing possible implementation manners of the first aspect, before performing charge-discharge control on the self-charge-discharge module based on the synchronous carrier signal of the self-charge-discharge module, the method further includes:
acquiring the state of the battery pack, and generating a charge and discharge control signal based on the state of the battery pack;
transmitting the charge and discharge control signal to other UPSs sharing the battery pack;
correspondingly, the charge and discharge control of the self-charge and discharge module is performed by the synchronous carrier signal based on the self-charge and discharge module, and the control method comprises the following steps: and performing charge and discharge control on the self charge and discharge module based on the charge and discharge control signal and the synchronous carrier signal of the self charge and discharge module.
A second aspect of an embodiment of the present invention provides a charge and discharge control device applied to each of at least two UPSs sharing a same battery pack in a parallel operation system, where the charge and discharge control device includes:
the inversion synchronization regulating unit is used for acquiring a carrier synchronization signal and synchronously regulating an initial carrier signal of the inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the inversion module;
the charging and discharging synchronous regulation unit is used for synchronously regulating the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charging and discharging module;
and the charge and discharge control unit is used for carrying out charge and discharge control on the self charge and discharge module based on the synchronous carrier signal of the self charge and discharge module.
In a first possible implementation manner based on the second aspect, the charge and discharge control device further includes:
the master-slave judging unit is used for judging whether the current UPS is a master machine or a slave machine in the parallel operation system before the inversion synchronization regulating unit acquires the carrier synchronization signal, synchronously regulates the initial carrier signal of the self inversion module based on the carrier synchronization signal and obtains the synchronous carrier signal of the self inversion module;
correspondingly, the inversion synchronous regulation unit is specifically configured to:
if the current UPS is a host in the parallel operation system, generating the carrier synchronization signal based on an initial carrier signal of the self inversion module, and sending the carrier synchronization signal;
and if the current UPS is a slave in the parallel operation system, receiving the carrier synchronization signal sent by the host in the parallel operation system, and synchronously adjusting the initial carrier signal of the self inversion module based on the carrier synchronization signal to obtain the synchronous carrier signal of the self inversion module.
Based on the first possible implementation manner of the second aspect, the charge and discharge control device further includes:
the rectification synchronous regulation unit is used for synchronously regulating the initial carrier signal of the self rectification module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self rectification module;
correspondingly, the charge-discharge control unit is used for synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifier module to obtain the synchronous carrier signal of the self charge-discharge module.
A third aspect of an embodiment of the present invention provides a UPS 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 any one of the charge and discharge control methods when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the charge and discharge control method according to any one of the above.
Compared with the prior art, the invention has the following beneficial effects: for each UPS of at least two UPSs of a common battery pack in a parallel system, the synchronization signal can be obtained, the initial carrier signal of the inversion module of the UPS is synchronously adjusted based on the carrier synchronization signal, the synchronous carrier signal of the inversion module of the UPS is obtained, and the carrier synchronization between the inversion modules of the UPSs is realized; then, each UPS synchronously adjusts the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the inversion module to obtain the synchronous carrier signal of the charging and discharging module, so that the carrier synchronization between the charging and discharging modules of each UPS can be realized; due to the fact that the carriers among the charging and discharging modules of the UPS are synchronous, high-frequency components generated by the charging and discharging modules of the UPS when the charging and discharging modules of the UPS control the charging and discharging of the battery pack cannot be overlapped, the influence of the overlapped high-frequency components on the battery pack and the UPS system is avoided, and the stability of the UPS power supply system is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating an implementation of a charging and discharging control method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an implementation of a charging and discharging control method according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a charge and discharge control device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a UPS provided by an embodiment of the invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention 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 invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, it shows an implementation flowchart of the charging and discharging control method provided by the embodiment of the present invention, and details are as follows:
the parallel operation system refers to a system for connecting a plurality of UPSs together in parallel to provide an uninterruptible power supply service, and the embodiment of the invention can be applied to each of at least two UPSs sharing the same battery pack in the parallel operation system, namely, each of at least two UPSs sharing the same battery pack in the parallel operation system needs to execute the charge and discharge control method provided by the embodiment of the invention, and on the basis, synchronous charge and discharge control of the same shared battery pack by the UPSs is realized.
In an application scenario, two UPSs in the parallel operation system may share the same battery pack, or three UPSs may share the same battery pack; the UPSs in the parallel operation system CAN be connected through a Controller Area Network (CAN) to realize communication between the UPSs in the parallel operation system.
In step 101, a carrier synchronization signal is obtained, and an initial carrier signal of a self-inversion module is synchronously adjusted based on the carrier synchronization signal to obtain a synchronization carrier signal of the self-inversion module;
in the embodiment of the present invention, the carrier synchronization signal refers to a synchronized reference signal, for example, in an application scenario, the current UPS may adjust the period and the phase of the initial carrier signal of its own inverting module to be consistent with (synchronous with) the carrier synchronization signal based on the period and the phase of the carrier synchronization signal.
For each UPS sharing the battery pack, because the carrier synchronization signals acquired by each UPS are consistent, the synchronization carrier signals acquired by each UPS are also synchronous after the initial carrier signals of the own inverter module are synchronously adjusted.
In the embodiments of the present invention, the above and the following specific ways of performing the synchronization adjustment may refer to the prior patent document with application number 201610418497.8 previously applied by the applicant of the present invention, or may refer to the prior patent document with application number 201711145227.5, and are not described herein again.
In step 102, synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inverter module to obtain the synchronous carrier signal of the self charge-discharge module;
in the step 101, carrier synchronization between the inverter modules of the UPSs sharing the battery pack is achieved, and further, in the embodiment of the present invention, the UPSs may perform synchronous adjustment on the initial carrier signal of their own charge-discharge module based on the synchronous carrier signal of their own inverter modules to obtain the synchronous carrier signal of their own charge-discharge module.
For example, each UPS may synchronize the initial carrier signal of its own charging and discharging module to be consistent with the synchronous carrier signal of its own inverting module, for example, with a consistent period, a consistent phase, and/or a consistent amplitude. Because the synchronous carrier signals of the self-inversion modules of the UPSs are synchronous, the synchronous carrier signals of the self-charging and discharging modules of the UPSs are also synchronous after the synchronous regulation.
In step 103, the self-charging-and-discharging module is subjected to charging and discharging control based on the synchronous carrier signal of the self-charging-and-discharging module.
In the embodiment of the invention, after synchronous carrier signals of the charge-discharge modules of the UPSs of the common battery pack in the parallel system are consistent (synchronous), the carrier synchronization can be realized when the charge-discharge control is performed on the common battery pack by using the synchronous carrier signals, so that the high-frequency component superposition generated when the charge-discharge control is performed on the common battery pack by using the UPS of the common battery pack when the carriers are not synchronous can be avoided.
Optionally, the step 103 may include:
synchronously adjusting the initial carrier signal of the self-rectification module based on the synchronous carrier signal of the self-inversion module to obtain the synchronous carrier signal of the self-rectification module;
and synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifying module to obtain the synchronous carrier signal of the self charge-discharge module.
In the embodiment of the invention, each UPS can firstly realize the synchronization of the initial carrier signal of the rectification module based on the synchronous carrier signal of the inversion module to obtain the synchronous carrier signal of the rectification module; then, the synchronization of the initial carrier signal of the self-charging and discharging module and the synchronous carrier signal of the self-rectifying module is realized based on the synchronous carrier signal of the self-rectifying module, and the synchronous carrier signal of the self-charging and discharging module is obtained.
In one embodiment, each UPS may employ a dual-DSP control scheme, i.e., each UPS is configured with a first DSP controller and a second DSP controller, wherein the first DSP controller of each UPS is configured to control its own inverter module, and the second DSP controller of each UPS is configured to control its own rectifier module and its own charging and discharging module. Because the rectifier module and the charge-discharge module of the UPS are controlled based on the same DSP controller, the synchronization of the initial carrier signal of the charge-discharge module based on the synchronous carrier signal of the rectifier module belongs to the synchronization of the inner part of the same chip, and is easier to realize.
Optionally, before the step 103, the method may further include:
acquiring the state of a battery pack, and generating a charge and discharge control signal based on the state of the battery pack;
transmitting the charge and discharge control signal to other UPSs sharing the battery pack;
correspondingly, the charge and discharge control of the self-charge and discharge module is performed by the synchronous carrier signal based on the self-charge and discharge module, and the control method comprises the following steps: and performing charge and discharge control on the self charge and discharge module based on the charge and discharge control signal and the synchronous carrier signal of the self charge and discharge module.
In an embodiment of the present invention, a UPS sharing a battery pack may detect a state of the battery pack and generate a charge and discharge control signal based on the state of the battery pack. For example, the voltage of the battery pack is detected, and a charging control signal is generated when the voltage of the battery pack is detected to be lower than a first preset value so as to control the charging and discharging module to perform charging operation on the battery pack; and generating a discharge control signal when the mains supply is powered off and the voltage of the battery pack is higher than a second preset value so as to control the charge-discharge module to execute the charging operation of the battery pack, namely, the battery pack is discharged to supply power to the load.
After the current UPS generates the charge and discharge control signal, it is necessary to transmit its charge and discharge control signal to other UPSs sharing the battery pack so that the other UPSs perform a synchronous charge and discharge operation with the current UPS. Then, each UPS may perform charging and discharging operations on the common battery pack based on the synchronization carrier signal of its own charging and discharging module and the charging and discharging control signal synchronized with the other UPS.
As can be seen from the above, for each UPS in at least two UPSs of the common battery pack in the parallel operation system, the synchronization carrier signal of the own inversion module is obtained by obtaining the synchronization signal and synchronously adjusting the initial carrier signal of the own inversion module based on the carrier synchronization signal, so as to implement carrier synchronization between the inversion modules of the UPSs; then, each UPS synchronously adjusts the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the inversion module to obtain the synchronous carrier signal of the charging and discharging module, so that the carrier synchronization between the charging and discharging modules of each UPS can be realized; due to the fact that the carriers among the charging and discharging modules of the UPS are synchronous, high-frequency components generated by the charging and discharging modules of the UPS when the charging and discharging modules of the UPS control the charging and discharging of the battery pack cannot be overlapped, the influence of the overlapped high-frequency components on the battery pack and the UPS system is avoided, and the stability of the UPS power supply system is guaranteed.
Fig. 2 shows a flowchart of an implementation of a charging and discharging control method according to another embodiment of the present invention, which is detailed as follows:
in step 201, judging whether the current UPS is a master or a slave in the parallel operation system;
after the parallel operation system operates, each UPS needs to perform master-slave competition to determine that one UPS is used as a master of the parallel operation system, and the other UPSs are used as slaves of the parallel operation system to operate. The UPS as a master in the parallel system may be configured to transmit a carrier synchronization signal, and the UPS as a slave may receive the carrier synchronization signal transmitted by the master and adjust its own carrier signal to be synchronized with the received carrier synchronization signal.
In the embodiment of the present invention, each UPS may determine whether itself is a master or a slave in the parallel operation system based on its own master/slave flag bit, which is not described herein.
In step 202, if the current UPS is the host in the parallel operation system, generating a carrier synchronization signal based on an initial carrier signal of the own inverter module, and sending the carrier synchronization signal;
in the embodiment of the present invention, the host may generate a carrier synchronization signal based on the initial carrier signal of its own inversion module and send the carrier synchronization signal, and for the host, the initial carrier signal of its own inversion module is the synchronization carrier signal of its own inversion module.
In step 203, if the current UPS is a slave in the parallel operation system, receiving a carrier synchronization signal sent by a host in the parallel operation system, and synchronously adjusting an initial carrier signal of the own inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the own inversion module;
in the embodiment of the invention, the slave receives the carrier synchronization signal sent by the host, and adjusts the initial carrier signal of the self inversion module to be consistent (synchronous) with the received carrier synchronization signal.
In step 204, synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inverter module to obtain the synchronous carrier signal of the self charge-discharge module;
in step 205, the self-charging-and-discharging module is controlled to charge and discharge based on the synchronous carrier signal of the self-charging-and-discharging module.
The above steps 203 to 205 can specifically refer to steps 102 to 103 and optional embodiments thereof in the embodiment shown in fig. 1, and are not described herein again.
As can be seen from the above, for each UPS in at least two UPSs of the common battery pack in the parallel operation system, the synchronization carrier signal of the own inversion module is obtained by obtaining the synchronization signal and synchronously adjusting the initial carrier signal of the own inversion module based on the carrier synchronization signal, so as to implement carrier synchronization between the inversion modules of the UPSs; then, each UPS synchronously adjusts the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the inversion module to obtain the synchronous carrier signal of the charging and discharging module, so that the carrier synchronization between the charging and discharging modules of each UPS can be realized; due to the fact that the carriers among the charging and discharging modules of the UPS are synchronous, high-frequency components generated by the charging and discharging modules of the UPS when the charging and discharging modules of the UPS control the charging and discharging of the battery pack cannot be overlapped, the influence of the overlapped high-frequency components on the battery pack and the UPS system is avoided, and the stability of the UPS power supply system is guaranteed.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 3 is a schematic structural diagram of a charge and discharge control device according to an embodiment of the present invention, and for convenience of description, only the portions related to the embodiment of the present invention are shown, and detailed descriptions are as follows:
as shown in fig. 3, the charge/discharge control device 3 includes: an inversion synchronization adjusting unit 31, a charge and discharge synchronization adjusting unit 32, and a charge and discharge control unit 33.
The inversion synchronization adjusting unit 31 is configured to acquire a carrier synchronization signal, and perform synchronization adjustment on an initial carrier signal of the own inversion module based on the carrier synchronization signal to obtain a synchronization carrier signal of the own inversion module;
the charge-discharge synchronous adjusting unit 32 is configured to synchronously adjust the initial carrier signal of the charge-discharge module based on the synchronous carrier signal of the self inverter module to obtain a synchronous carrier signal of the self charge-discharge module;
and a charge-discharge control unit 33 for performing charge-discharge control on the self charge-discharge module based on the synchronous carrier signal of the self charge-discharge module.
Optionally, the charge and discharge control device 3 may further include:
the master-slave judging unit is used for judging whether the current UPS is a master machine or a slave machine in the parallel operation system before the inversion synchronization regulating unit acquires the carrier synchronization signal, synchronously regulates the initial carrier signal of the self inversion module based on the carrier synchronization signal and obtains the synchronous carrier signal of the self inversion module;
correspondingly, the inverting synchronization adjusting unit 31 is specifically configured to:
if the current UPS is a host in the parallel operation system, generating the carrier synchronization signal based on an initial carrier signal of the self inversion module, and sending the carrier synchronization signal;
and if the current UPS is a slave in the parallel operation system, receiving the carrier synchronization signal sent by the host in the parallel operation system, and synchronously adjusting the initial carrier signal of the self inversion module based on the carrier synchronization signal to obtain the synchronous carrier signal of the self inversion module.
Optionally, the charge and discharge control device 3 may further include:
the rectification synchronous regulation unit is used for synchronously regulating the initial carrier signal of the self rectification module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self rectification module;
correspondingly, the charge-discharge control unit 33 is configured to perform synchronous adjustment on the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifier module, so as to obtain the synchronous carrier signal of the self charge-discharge module.
Optionally, each UPS may be configured with a first DSP controller and a second DSP controller, where the first DSP controller is configured to control the self-inverter module, and the second DSP controller is configured to control the self-rectifier module and the self-charging/discharging module.
Optionally, the charge and discharge control device 33 may further include:
the battery pack state acquisition unit is used for acquiring the state of the battery pack and generating a charging and discharging control signal based on the state of the battery pack;
a charge and discharge control signal transmitting unit for transmitting the charge and discharge control signal to other UPSs sharing the battery pack;
correspondingly, the charge-discharge control unit 33 is specifically configured to perform charge-discharge control on the self charge-discharge module based on the charge-discharge control signal and the synchronous carrier signal of the self charge-discharge module.
As can be seen from the above, for each UPS in at least two UPSs of the common battery pack in the parallel operation system, the synchronization carrier signal of the own inversion module is obtained by obtaining the synchronization signal and synchronously adjusting the initial carrier signal of the own inversion module based on the carrier synchronization signal, so as to implement carrier synchronization between the inversion modules of the UPSs; then, each UPS synchronously adjusts the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the inversion module to obtain the synchronous carrier signal of the charging and discharging module, so that the carrier synchronization between the charging and discharging modules of each UPS can be realized; due to the fact that the carriers among the charging and discharging modules of the UPS are synchronous, high-frequency components generated by the charging and discharging modules of the UPS when the charging and discharging modules of the UPS control the charging and discharging of the battery pack cannot be overlapped, the influence of the overlapped high-frequency components on the battery pack and the UPS system is avoided, and the stability of the UPS power supply system is guaranteed.
Fig. 4 is a schematic diagram of a UPS according to an embodiment of the present invention. As shown in fig. 4, the UPS4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in said memory 41 and executable on said processor 40. The processor 40 implements the steps in the above-described embodiments of the charge and discharge control method, such as the steps 101 to 103 shown in fig. 1, when executing the computer program 42. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 31 to 33 shown in fig. 3.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions that describe the execution of the computer program 42 in the UPS 4. For example, the computer program 42 may be divided into an inverter synchronization adjusting unit, a charge-discharge synchronization adjusting unit and a charge-discharge control unit, and each unit has the following specific functions:
the inversion synchronization regulating unit is used for acquiring a carrier synchronization signal and synchronously regulating an initial carrier signal of the inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the inversion module;
the charging and discharging synchronous regulation unit is used for synchronously regulating the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charging and discharging module;
and the charge and discharge control unit is used for carrying out charge and discharge control on the self charge and discharge module based on the synchronous carrier signal of the self charge and discharge module.
The UPS may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of a UPS and is not intended to be limiting, and that a UPS may include more or fewer components than shown, or some components may be combined, or different components, e.g., the UPS may also include input output devices, network access devices, buses, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the UPS4, such as a hard disk or memory of the UPS 4. The memory 41 may also be an external storage device of the UPS4, such as a plug-in hard disk provided on the UPS4, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 41 may also include both internal storage units of the UPS4 and external storage devices. The memory 41 is used to store the computer programs and other programs and data required by the UPS. The memory 41 may also be used to temporarily store 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-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
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 implementation. 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 invention.
In the embodiments provided herein, it should be understood that the disclosed apparatus/UPS and method may be implemented in other ways. For example, the above-described apparatus/UPS embodiments are merely illustrative, and for example, the division of the modules or units is merely a logical division, and other divisions may be implemented in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A charge and discharge control method is applied to each UPS of at least two UPSs sharing the same battery pack in a parallel system, and is characterized by comprising the following steps:
judging whether the current UPS is a host or a slave in the parallel operation system;
acquiring a carrier synchronization signal, and synchronously adjusting an initial carrier signal of the self-inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the self-inversion module; specifically, if the current UPS is the host in the parallel operation system, the carrier synchronization signal is generated based on an initial carrier signal of the own inverter module, and the carrier synchronization signal is sent; if the current UPS is a slave in the parallel operation system, receiving the carrier synchronization signal sent by a host in the parallel operation system, and synchronously adjusting the initial carrier signal of the self inversion module based on the carrier synchronization signal to obtain the synchronous carrier signal of the self inversion module;
synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charge-discharge module;
and carrying out charge-discharge control on the self charge-discharge module based on the synchronous carrier signal of the self charge-discharge module.
2. The charge-discharge control method according to claim 1, wherein the synchronously adjusting the initial carrier signal of the self-charge-discharge module based on the synchronous carrier signal of the self-inverter module to obtain the synchronous carrier signal of the self-charge-discharge module comprises:
synchronously adjusting the initial carrier signal of the self-rectification module based on the synchronous carrier signal of the self-inversion module to obtain the synchronous carrier signal of the self-rectification module;
and synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifying module to obtain the synchronous carrier signal of the self charge-discharge module.
3. The charge and discharge control method according to claim 2, wherein each UPS is configured with a first DSP controller for controlling the self-inverter module and a second DSP controller for controlling the self-rectifier module and the self-charge and discharge module.
4. The charge and discharge control method according to any one of claims 1 to 3, further comprising, before the charge and discharge control of the self-charge and discharge module based on the synchronous carrier signal of the self-charge and discharge module:
acquiring the state of the battery pack, and generating a charge and discharge control signal based on the state of the battery pack;
transmitting the charge and discharge control signal to other UPSs sharing the battery pack;
correspondingly, the charge and discharge control of the self-charge and discharge module is performed by the synchronous carrier signal based on the self-charge and discharge module, and the control method comprises the following steps: and performing charge and discharge control on the self charge and discharge module based on the charge and discharge control signal and the synchronous carrier signal of the self charge and discharge module.
5. A charge and discharge control device applied to each of at least two UPSs sharing a same battery pack in a parallel operation system, the charge and discharge control device comprising:
the master-slave judging unit is used for judging whether the current UPS is a master machine or a slave machine in the parallel machine system;
the inversion synchronization regulating unit is used for acquiring a carrier synchronization signal and synchronously regulating an initial carrier signal of the inversion module based on the carrier synchronization signal to obtain a synchronous carrier signal of the inversion module; the method is specifically used for: if the current UPS is a host in the parallel operation system, generating the carrier synchronization signal based on an initial carrier signal of the self inversion module, and sending the carrier synchronization signal; if the current UPS is a slave in the parallel operation system, receiving the carrier synchronization signal sent by a host in the parallel operation system, and synchronously adjusting the initial carrier signal of the self inversion module based on the carrier synchronization signal to obtain the synchronous carrier signal of the self inversion module;
the charging and discharging synchronous regulation unit is used for synchronously regulating the initial carrier signal of the charging and discharging module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self charging and discharging module;
and the charge and discharge control unit is used for carrying out charge and discharge control on the self charge and discharge module based on the synchronous carrier signal of the self charge and discharge module.
6. The charge and discharge control device according to claim 5, further comprising:
the rectification synchronous regulation unit is used for synchronously regulating the initial carrier signal of the self rectification module based on the synchronous carrier signal of the self inversion module to obtain the synchronous carrier signal of the self rectification module;
correspondingly, the charge-discharge control unit is used for synchronously adjusting the initial carrier signal of the self charge-discharge module based on the synchronous carrier signal of the self rectifier module to obtain the synchronous carrier signal of the self charge-discharge module.
7. A UPS comprising 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 charge and discharge control method according to any one of claims 1 to 4 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the charge and discharge control method according to any one of claims 1 to 4 above.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202513656U (en) * | 2012-03-31 | 2012-10-31 | 河北实华科技有限公司 | Modularized UPS system connected in parallel |
| CN102916921A (en) * | 2012-09-19 | 2013-02-06 | 华为技术有限公司 | Method, device and system for carrier synchronization |
| CN106374550A (en) * | 2015-07-24 | 2017-02-01 | 比亚迪股份有限公司 | Electric vehicle charging system and charging control method thereof |
| CN107017762A (en) * | 2017-02-21 | 2017-08-04 | 三峡大学 | A kind of direct current capacitors method for inhibiting harmonic current |
| CN109378897A (en) * | 2018-09-29 | 2019-02-22 | 深圳市英威腾电源有限公司 | A kind of ups system and its control method of CB common battery group |
-
2019
- 2019-12-02 CN CN201911214307.0A patent/CN110912228B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202513656U (en) * | 2012-03-31 | 2012-10-31 | 河北实华科技有限公司 | Modularized UPS system connected in parallel |
| CN102916921A (en) * | 2012-09-19 | 2013-02-06 | 华为技术有限公司 | Method, device and system for carrier synchronization |
| CN106374550A (en) * | 2015-07-24 | 2017-02-01 | 比亚迪股份有限公司 | Electric vehicle charging system and charging control method thereof |
| CN107017762A (en) * | 2017-02-21 | 2017-08-04 | 三峡大学 | A kind of direct current capacitors method for inhibiting harmonic current |
| CN109378897A (en) * | 2018-09-29 | 2019-02-22 | 深圳市英威腾电源有限公司 | A kind of ups system and its control method of CB common battery group |
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Inventor after: Zhou Chaowei Inventor after: Yang Shengjia Inventor after: Shi Shaopeng Inventor after: Lian Fu Rong Inventor after: Chen Wenjia Inventor before: Zhou Chaowei Inventor before: Shi Shaopeng Inventor before: Lian Fu Rong Inventor before: Chen Wenjia |
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Address after: 361101 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Fujian Province Patentee after: Kehua Data Co.,Ltd. Patentee after: ZHANGZHOU KEHUA TECHNOLOGY LIMITED BY SHARE Ltd. Address before: 361101 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Fujian Province Patentee before: XIAMEN KEHUAHENGSHENG LIMITED BY SHARE Ltd. Patentee before: ZHANGZHOU KEHUA TECHNOLOGY LIMITED BY SHARE Ltd. |