CN111181249A - Multi-power-supply parallel synchronization method, control power supply, electric control device and purifier - Google Patents
Multi-power-supply parallel synchronization method, control power supply, electric control device and purifier Download PDFInfo
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- CN111181249A CN111181249A CN202010095662.7A CN202010095662A CN111181249A CN 111181249 A CN111181249 A CN 111181249A CN 202010095662 A CN202010095662 A CN 202010095662A CN 111181249 A CN111181249 A CN 111181249A
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- power supply
- control power
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- power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- 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
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
Abstract
The invention discloses a multi-power-supply parallel synchronization method, a control power supply, an electric control device and a purifier, wherein after a plurality of control power supplies are started simultaneously, the working state of each control power supply is adjusted to a first running state and is kept unchanged until all the control power supplies are in the first running state, and then the first running state is adjusted to a second running state synchronously to realize the synchronous starting work of each control power supply; by the method, the multiple power supplies are synchronously started under the condition that the multiple power supplies are connected in parallel by utilizing the synchronous control of the signals, the starting time difference of each power supply is eliminated, and the misoperation of power supply protection is avoided.
Description
Technical Field
The invention relates to the field of power supply control, in particular to a multi-power-supply parallel synchronization method, a control power supply, an electric control device and a purifier.
Background
In the application of the power supply of the device, a plurality of power supplies are often required to be connected in parallel so as to control the on or off of the plurality of power supplies simultaneously and realize the on-off control of the plurality of power supplies or the device. When a plurality of power supplies are operated in parallel, starting time difference exists among the power supplies during starting, and the later-started power supply has voltage of the first-started power supply, so that current cannot be output during starting, and misoperation of power supply protection is caused.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a multi-power-supply parallel synchronization method, a control power supply, an electric control device and a purifier, which aim to realize the synchronous start of a plurality of control power supplies, avoid the false operation of trigger protection of the control power supplies and solve the problem of the synchronous start of a plurality of electric fields of the purifier.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-power parallel synchronization method comprises the following steps when a control power supply is started: the control power supply inputs a high level signal to the bus, the bus is set to be a high level along with the first control power supply which outputs the high level signal, and the bus outputs a feedback signal to each control power supply; when the control power supply receives the feedback signal, the control power supply keeps unchanged after running to a preset first running state, and a high level signal output to the bus is converted into a low level signal; when the control power supplies all operate to the first operation state, the bus is set to be at a low level along with the last control power supply which outputs a low level signal, and the bus outputs a feedback signal to each control power supply; when the control power supply receives the feedback signal, the control power supply is converted from the first operation state to a preset second operation state and is kept unchanged.
In the multi-power-supply parallel synchronization method, when any control power supply in the second running state detects spark flashover, the control power supply converts a low level signal output to a bus into a high level signal, the bus is set to be high level along with the control power supply, and the bus outputs a feedback signal to each control power supply; and the control power supply in the second running state executes the arc extinguishing processing program, and is restarted after the control power supply in the second running state completes the arc extinguishing processing program.
The multi-power-supply parallel synchronization method comprises the steps that when a new control power supply is started under the condition that a control power supply is in a second running state, the new control power supply inputs a high-level signal to a bus, the bus is set to be high level along with the new control power supply, and the bus outputs a feedback signal to each control power supply; and the control power supply in the second running state executes the arc extinguishing processing program, and is restarted after the control power supply in the second running state completes the arc extinguishing processing program.
The method for synchronizing the parallel connection of the multiple power supplies is characterized in that the second operation state is set as an operation state for outputting working current; the first operating state is set to a low current output state lower than the operating current.
The multi-power-supply parallel synchronization method is characterized in that the level of the feedback signal is subjected to inversion processing and is opposite to the level of a bus.
The multi-power-supply parallel synchronization method is characterized in that the level of the feedback signal is the same as that of the bus.
An electric control device is characterized by comprising a plurality of control power supplies and a bus, wherein the level input end and the level output end of each control power supply are in communication connection with the bus through synchronous terminals, and the control power supplies are connected in parallel; the electronic control device executes the multi-power parallel synchronization method as described above.
In the electric control device, a level input end and a level output end of the control power supply are connected with the synchronous terminal through an isolation circuit; the isolation circuit is provided with a photoelectric coupler or a repeater or a magnetic isolation chip.
A control power supply comprising a control unit that performs the method of synchronization of multiple power supply parallels as described above.
A purifier is characterized by comprising an electric field component and a plurality of control power supplies, wherein the electric field component is respectively in control connection with the control power supplies; the purifier performs the multi-power parallel synchronization method described above.
Has the advantages that:
the invention provides a multi-power-supply parallel synchronization method, a control power supply, an electric control device and a purifier, compared with the prior art, a plurality of control power supplies are connected in parallel communication through a bus, after the control power supplies are started, the control power supplies are all in a first running state, and then the control power supplies are run to a second running state synchronously to work normally; by utilizing the signal synchronization principle, the synchronous starting of a plurality of control power supplies is realized under the condition that a plurality of power supplies are connected in parallel, the starting time difference of each control power supply is eliminated, and the misoperation of power supply protection is avoided.
Drawings
Fig. 1 is a first level logic diagram of a synchronization method for multiple parallel power supplies according to the present invention.
Fig. 2 is a second level logic diagram of the multi-power parallel synchronization method according to the present invention.
Fig. 3 is a third schematic diagram of level logic of a synchronization method for multiple parallel power supplies according to the present invention.
Fig. 4 is a schematic block diagram of an electric control device according to the present invention.
Fig. 5 is a schematic circuit diagram of an embodiment of an electrical control device according to the present invention.
Fig. 6 is a connection block diagram of a purifier according to the present invention.
Description of the main element symbols: 100-bus, 110-synchronous terminal, 200-control power supply, 210-level input terminal, 220-level output terminal, 300-isolation circuit and 400-electric field component.
Detailed Description
The invention provides a multi-power-supply parallel synchronization method, a control power supply, an electric control device and a purifier, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a method for synchronizing multiple parallel power supplies, which comprises the following steps when a control power supply 200 is started: the control power supply 200 inputs a high level signal to the bus 100, the bus 100 is set to a high level along with the first control power supply 200 outputting the high level signal, and the bus 100 outputs a feedback signal to each control power supply 200; when the control power supply 200 receives the feedback signal, the control power supply 200 is kept unchanged after running to a preset first running state, and a high level signal output to the bus 100 is converted into a low level signal; when the control power supplies 200 all operate to the first operation state, the bus 100 is set to a low level following the last control power supply 200 outputting a low level signal, and the bus 100 outputs a feedback signal to each control power supply 200; when the control power supply 200 receives the feedback signal, the control power supply 200 is switched from the first operation state to the preset second operation state and remains unchanged. Additionally, when the control power supply 200 is all down, the bus 100 is in a low state.
Preferably, the second operation state is set as an operation state of outputting an operation current; the first operating state is set to a low current output state lower than the operating current.
By the synchronization method, after the control power supplies 200 are started, the current output of each control power supply 200 is adjusted to the first running state and the state is maintained unchanged, at the moment, the control power supply 200 is not in the state of outputting working current, the current is low, and the false action of power supply protection cannot be caused; until all the control power supplies 200 are in the first running state, synchronously regulating the first running state to the second running state, outputting working current and maintaining the normal working state; therefore, the time difference existing when each control power supply 200 is started is eliminated, synchronous starting of a plurality of control power supplies 200 is realized, and misoperation of power supply protection is effectively avoided.
Referring to fig. 2, in practical applications, the control power supply 200 is usually provided with an arc extinguishing processing program for arc extinguishing, but when multiple power supplies are operated in parallel, if a spark flashover occurs, only a part of the power supplies may detect the spark flashover, and the power supplies that do not detect the spark flashover continue to operate normally, which may cause arc extinguishing failure and easily cause safety accidents.
Further, in some embodiments, when any of the control power supplies 200 in the second operation state detects a spark flashover, the control power supply 200 converts the low level signal output to the bus 100 into a high level signal, the bus 100 is set to a high level along with the control power supply 200, and the bus 100 outputs a feedback signal to each of the control power supplies 200; the control power supply 200 in the second operation state executes the arc extinguishing processing program, and restarts after the control power supply 200 in the second operation state completes the arc extinguishing processing program, and returns to the multi-power supply starting step of the synchronization method. By the method, the power supply which does not detect spark flashover is forced to enter the arc extinguishing processing program by further utilizing the control of the synchronous signal, so that arc extinguishing failure caused by asynchronous arc extinguishing processing of the power supply 200 is prevented, and the reliability and rapidness of arc extinguishing are ensured.
Referring to fig. 3, in practical applications, when a new power supply needs to be started under the condition that power supplies are in parallel operation, the newly started power supply may not be started normally due to the already high external voltage.
Further, in some embodiments, when a new control power supply is activated when a control power supply 200 is in the second operating state, the new control power supply inputs a high level signal to the bus 100, the bus 100 is set to a high level following the new control power supply, and the bus 100 outputs a feedback signal to each control power supply 200; the control power supply 200 in the second operation state executes the arc extinguishing process, and is restarted after the control power supply 200 in the second operation state completes the arc extinguishing process. By the method, the power supplies in the parallel running state are restarted by utilizing the synchronous signal control and the arc extinguishing processing program built in the power supplies, so that the synchronous starting of the power supplies and the newly started power supply is realized, and the normal starting of the new power supply is ensured.
Specifically, referring to fig. 1-3, in the present embodiment, the level of the feedback signal is inverted and opposite to the level of the bus 100.
Further, in another embodiment, the level of the feedback signal may be set to be the same as the level of the bus 100. Therefore, the level of the feedback signal is set to be high level or low level, which does not affect the logic execution of the synchronization method, and can be set according to actual needs.
Preferably, the bus 100 is a SYN bus 100.
Referring to fig. 4-5, the present invention further provides an electric control device, which includes a plurality of control power supplies 200 and a bus 100, wherein a level input end 210 and a level output end 220 of each of the control power supplies 200 are communicatively connected to the bus 100 through a synchronization terminal 110, and the control power supplies 200 are connected in parallel; the electric control device executes the multi-power parallel synchronization method; it should be noted that the control power supplies 200 are connected to the ground.
Further, in some embodiments, the level input 210 and the level output 220 of the control power supply 200 are connected to the synchronization terminal 110 through the isolation circuit 300; the isolation circuit 300 is provided with a photoelectric coupler or a relay or a magnetic isolation chip; wherein, the magnetic isolation chip is preferably ADI brand magnetic isolation chip. Through the arrangement, the control power supply 200 is isolated, so that electromagnetic interference can be effectively reduced, and meanwhile, the circuit is protected.
Specifically, in the present embodiment, referring to fig. 4, the isolation circuit 300 is in a photoelectric isolation form and includes a photocoupler U1 and a photocoupler U2, the level input end 210 is connected to one end of a light emitter of the photocoupler U1 through a resistor R1, and the other end of the photocoupler U1 is grounded; one end of the photo detector of the photo coupler U1 is connected to the current voltage 12V through a resistor R2, and the other end of the photo detector of the photo coupler U1 is connected to the bus 100 through a synchronization terminal 110. One end of the light emitter of the photocoupler U2 is connected with the synchronous terminal 110 through a resistor R4, and the other end of the light emitter of the photocoupler U2 is grounded through a resistor R5; one end of the light receiver of the photocoupler U2 is connected to the level output terminal 220, and the other end of the light receiver of the photocoupler U2 is grounded. Through the above arrangement, the photoelectric isolation between the respective control power supplies 200 is realized.
Preferably, the level output terminal 220 is further connected to the dc voltage of 3.3V through a pull-up resistor R6, so as to pull up the level of the level output terminal 220, thereby performing an inverse processing on the feedback signal.
The present invention also provides a control power supply 200 including a control unit that performs the multi-power parallel synchronization method as described above; since the above detailed description is made on the synchronization method for multiple parallel power supplies, the detailed description is omitted here.
Referring to fig. 6, the present invention further provides a purifier, which includes an electric field assembly 400 and a plurality of control power supplies 200, wherein the electric field assembly 400 is respectively connected to the plurality of control power supplies 200 in a control manner, the plurality of control power supplies 200 are connected in parallel via a bus 100, and the purifier performs the above-mentioned synchronization method with multiple parallel power supplies; the synchronous starting control problem of a plurality of electric field units in the electric field assembly 400 is solved by utilizing the synchronous method, the reliability of the purifier is improved, and the product quality is improved; since the above detailed description is made on the synchronization method for multiple parallel power supplies, the detailed description is omitted here.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (10)
1. A multi-power-supply parallel synchronization method is characterized by comprising the following steps when a control power supply is started: the control power supply inputs a high level signal to the bus, the bus is set to be a high level along with the first control power supply which outputs the high level signal, and the bus outputs a feedback signal to each control power supply; when the control power supply receives the feedback signal, the control power supply keeps unchanged after running to a preset first running state, and a high level signal output to the bus is converted into a low level signal; when the control power supplies all operate to the first operation state, the bus is set to be at a low level along with the last control power supply which outputs a low level signal, and the bus outputs a feedback signal to each control power supply; when the control power supply receives the feedback signal, the control power supply is converted from the first operation state to a preset second operation state and is kept unchanged.
2. The method of claim 1, wherein when any one of the control power supplies in the second operation state detects a spark flashover, the control power supply converts a low level signal output to the bus into a high level signal, the bus is set to a high level following the control power supply, and the bus outputs a feedback signal to each control power supply; and the control power supply in the second running state executes the arc extinguishing processing program, and is restarted after the control power supply in the second running state completes the arc extinguishing processing program.
3. A method for synchronizing a plurality of parallel power supplies according to claim 2, wherein when a new control power supply is activated in a case where the control power supply is in the second operation state, the new control power supply inputs a high level signal to the bus, the bus is set to a high level following the new control power supply, and the bus outputs a feedback signal to each control power supply; and the control power supply in the second running state executes the arc extinguishing processing program, and is restarted after the control power supply in the second running state completes the arc extinguishing processing program.
4. The method for synchronizing a plurality of power supplies connected in parallel according to claim 3, wherein the second operating state is set as an operating state that outputs an operating current; the first operating state is set to a low current output state lower than the operating current.
5. The method for synchronizing a plurality of power supplies connected in parallel according to claim 4, wherein the level of the feedback signal is inverted and opposite to the level of the bus.
6. The method of claim 4, wherein the level of the feedback signal is the same as the level of the bus.
7. An electric control device is characterized by comprising a plurality of control power supplies and a bus, wherein the level input end and the level output end of each control power supply are in communication connection with the bus through synchronous terminals, and the control power supplies are connected in parallel; the electronic control device executes the method for synchronizing the parallel connection of multiple power supplies according to any one of the claims 1 to 6.
8. The electric control device according to claim 7, wherein the level input end and the level output end of the control power supply are connected with the synchronous terminal through an isolation circuit; the isolation circuit is provided with a photoelectric coupler or a repeater or a magnetic isolation chip.
9. A control power supply comprising a control unit that performs the method of synchronization of multiple parallel power supplies of any of claims 1-6 above.
10. A purifier is characterized by comprising an electric field component and a plurality of control power supplies, wherein the electric field component is respectively in control connection with the control power supplies; the purifier performs the method of synchronization of multiple parallel power supplies of any of claims 1-6 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010095662.7A CN111181249A (en) | 2020-02-17 | 2020-02-17 | Multi-power-supply parallel synchronization method, control power supply, electric control device and purifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010095662.7A CN111181249A (en) | 2020-02-17 | 2020-02-17 | Multi-power-supply parallel synchronization method, control power supply, electric control device and purifier |
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| CN111181249A true CN111181249A (en) | 2020-05-19 |
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| CN202010095662.7A Pending CN111181249A (en) | 2020-02-17 | 2020-02-17 | Multi-power-supply parallel synchronization method, control power supply, electric control device and purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300585A (en) * | 2021-05-26 | 2021-08-24 | 上海军陶科技股份有限公司 | Power supply system |
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2020
- 2020-02-17 CN CN202010095662.7A patent/CN111181249A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300585A (en) * | 2021-05-26 | 2021-08-24 | 上海军陶科技股份有限公司 | Power supply system |
| CN113300585B (en) * | 2021-05-26 | 2022-03-29 | 上海军陶科技股份有限公司 | Power supply system |
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