CN114070010A - Parallel operation control method and device and parallel operation system - Google Patents
Parallel operation control method and device and parallel operation system Download PDFInfo
- Publication number
- CN114070010A CN114070010A CN202111166038.2A CN202111166038A CN114070010A CN 114070010 A CN114070010 A CN 114070010A CN 202111166038 A CN202111166038 A CN 202111166038A CN 114070010 A CN114070010 A CN 114070010A
- Authority
- CN
- China
- Prior art keywords
- current
- power supply
- direct
- switching power
- supply circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 34
- 238000004590 computer program Methods 0.000 claims description 16
- 230000015654 memory Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a parallel operation control method, a parallel operation control device and a parallel operation system, wherein the method is applied to each switch power supply circuit in the parallel operation system, and the parallel operation system is composed of at least two switch power supply circuits connected in parallel; the method comprises the following steps: acquiring a voltage direct-current component of a local switching power supply circuit, and determining a voltage direct-current component error based on the voltage direct-current component and a preset voltage direct-current component reference value; acquiring the current direct-current component of each switching power supply circuit, and determining the current direct-current component regulating quantity of the local switching power supply circuit based on the current direct-current component of each switching power supply circuit; determining a reference phase voltage adjustment quantity of the local switching power supply circuit based on the voltage direct-current component error and the current direct-current component adjustment quantity; and adjusting the preset reference phase voltage of the local machine according to the reference phase voltage adjustment amount, and performing current sharing control on the local machine switching power supply circuit based on the adjusted reference phase voltage. The invention can effectively restrain direct current circulation and better realize current sharing control.
Description
Technical Field
The invention belongs to the technical field of parallel machine control, and particularly relates to a parallel machine control method and device and a parallel machine system.
Background
In the field of switching power supplies, parallel operation systems have higher reliability than single machines, and are easy to expand, so that the parallel operation systems are widely applied. The key of the parallel operation of the switching power supply circuits is the distribution of load current, if the load current is unevenly distributed, a circulating current is generated among the switching power supply circuits, and the efficiency and the reliability of the parallel system are reduced, so that the current sharing control of the parallel system is very important. When current sharing control of the parallel operation system is performed, attention needs to be paid to the direct current sharing characteristic in addition to the alternating current sharing characteristic. If the parallel operation direct current circulation is too large, the performance and the service life of magnetic devices such as inductors and the like can be reduced, the current sharing degree of the system can be deteriorated, and the current waveform can be distorted.
It is generally considered that the current dc can be guaranteed to be zero as long as the voltage dc component is controlled to be zero, but the premise is that the zero points of all parallel-operation switching power supply circuits are equipotential. In the prior art, zero equipotential is usually ensured by methods of consistent wiring, device characteristic matching and the like, however, the above methods cannot be realized in practical application, which causes that direct current circulation cannot be effectively inhibited in some scenes that zero equipotential cannot be ensured, thereby affecting the current sharing degree of the parallel operation system.
Disclosure of Invention
The invention aims to provide a parallel operation control method, a parallel operation control device and a parallel operation system, and aims to solve the problem that in the prior art, under some scenes that zero equipotential cannot be guaranteed, direct current circulation cannot be effectively inhibited, so that the current sharing degree of the parallel operation system is influenced.
In a first aspect of the embodiments of the present invention, a parallel operation control method is provided, where the parallel operation control method is applied to each switching power supply circuit in a parallel operation system, and the parallel operation system is composed of at least two switching power supply circuits connected in parallel; the parallel operation control method comprises the following steps:
acquiring a voltage direct-current component of a local switching power supply circuit, and determining a voltage direct-current component error based on the voltage direct-current component and a preset voltage direct-current component reference value;
acquiring the current direct-current component of each switching power supply circuit, and determining the current direct-current component regulating quantity of the local switching power supply circuit based on the current direct-current component of each switching power supply circuit;
determining a reference phase voltage adjustment quantity of a local switching power supply circuit based on the voltage direct-current component error and the current direct-current component adjustment quantity;
and adjusting the preset reference phase voltage of the local machine according to the reference phase voltage adjustment amount, and performing current sharing control on the local machine switching power supply circuit based on the adjusted reference phase voltage.
In one possible implementation manner, the determining, based on the current dc component of each switching power supply circuit, a current dc component adjustment amount of the local switching power supply circuit includes:
determining a reference value of the current direct-current component based on the current direct-current component of each switching power supply circuit;
and determining the direct current component adjustment quantity of the local switching power supply circuit based on the reference value of the direct current component and the direct current component of the local switching power supply circuit.
In one possible implementation manner, the determining a reference value of the dc component based on the dc component of the current of each switching power supply circuit includes:
and taking the average value of the current direct-current components of the switching power supply circuits as a reference value of the current direct-current components.
In one possible implementation, the determining, based on the reference value of the dc component of the current and the dc component of the current of the local switching power supply circuit, a dc component adjustment amount of the local switching power supply circuit includes:
determining a current direct-current component error of the local switching power supply circuit based on the reference value of the current direct-current component and the current direct-current component of the local switching power supply circuit;
and inputting the current direct-current component error into a first preset controller to obtain the direct-current component regulating quantity of the local switching power supply circuit.
In one possible implementation, the determining a reference phase voltage adjustment amount of a local switching power supply circuit based on the voltage dc component error and the current dc component adjustment amount includes:
adjusting the voltage direct-current component error based on the current direct-current component adjustment quantity to obtain an adjusted voltage direct-current component error;
inputting the adjusted voltage direct-current component error into a second preset controller to obtain an initial reference phase voltage adjustment quantity;
and adjusting the initial reference phase voltage adjustment quantity based on the current direct current component adjustment quantity to obtain the reference phase voltage adjustment quantity of the local switching power supply circuit.
In a possible implementation manner, the adjusting the voltage dc component error based on the current dc component adjustment amount to obtain an adjusted voltage dc component error includes:
and superposing the current direct-current component regulating quantity on the voltage direct-current component error to obtain the regulated voltage direct-current component error.
In one possible implementation manner, before the initial reference phase voltage adjustment amount is adjusted based on the current dc component adjustment amount, the parallel operation control method further includes:
the initial reference phase voltage adjustment is clipped.
In one possible implementation manner, the adjusting an initial reference phase voltage adjustment amount based on the current dc component adjustment amount to obtain a reference phase voltage adjustment amount of a local switching power supply circuit includes:
and superposing the current direct-current component regulating quantity on the initial reference phase voltage regulating quantity to obtain the reference phase voltage regulating quantity of the local switching power supply circuit.
In a second aspect of the embodiments of the present invention, there is provided a parallel computer control apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the parallel computer control method when executing the computer program.
In a third aspect of the embodiments of the present invention, there is provided a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the parallel control method when executing the computer program.
In a fourth aspect of the embodiments of the present invention, a parallel operation system is provided, including:
the parallel operation control device comprises at least two switch power supply circuits connected in parallel and at least two parallel operation control devices, wherein the parallel operation control devices are connected through a communication bus, and the parallel operation control devices are connected with the switch power supply circuits in a one-to-one correspondence mode.
The parallel operation control method, the parallel operation control device and the parallel operation system provided by the embodiment of the invention have the beneficial effects that:
different from the prior art, the method also acquires the current direct-current component of each switching power supply circuit, determines the current direct-current component regulating quantity of the local switching power supply circuit based on the current direct-current component of each switching power supply circuit, and achieves the effect of regulating the voltage direct current and the current direct current at the same time by introducing the current direct-current component regulating quantity into the calculation of the reference phase voltage regulating quantity. That is to say, the invention can effectively restrain direct current circulation and better realize the current sharing control of the parallel system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for 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 without creative efforts.
Fig. 1 is a schematic flow chart of a parallel operation control method according to an embodiment of the present invention;
fig. 2 is a block diagram of a parallel operation control device according to an embodiment of the present invention;
fig. 3 is a block diagram of a parallel operation system according to an embodiment of the present invention;
fig. 4 is a loop diagram corresponding to the calculation of the reference phase voltage adjustment according to an embodiment of the present 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, fig. 1 is a schematic flow chart of a parallel operation control method according to an embodiment of the present invention, where the parallel operation control method is applied to each switching power supply circuit in a parallel operation system (that is, each switching power supply circuit adopts the control method provided by the present invention), and the parallel operation system is composed of at least two switching power supply circuits connected in parallel.
The parallel operation control method comprises the following steps:
s101: and acquiring a voltage direct-current component of the local switching power supply circuit, and determining a voltage direct-current component error based on the voltage direct-current component and a preset voltage direct-current component reference value.
In a possible implementation manner of this embodiment, the preset reference value of the dc component of the voltage is 0.
In a possible implementation manner of this embodiment, a difference between a preset voltage dc component reference value and a voltage dc component of the local switching power supply circuit is used as a voltage dc component error of the local switching power supply circuit. The voltage direct-current component of the local switching power supply circuit refers to a voltage direct-current component sampled from the output end of the local switching power supply circuit.
S102: and acquiring the current direct-current component of each switching power supply circuit, and determining the current direct-current component regulating quantity of the local switching power supply circuit based on the current direct-current component of each switching power supply circuit.
In this embodiment, each switching power supply circuit includes a local switching power supply circuit and other switching power supply circuits in the parallel system except the local switching power supply circuit.
The dc component of a certain switching power supply circuit is a dc component sampled from the output side of the switching power supply circuit.
In one possible implementation manner, obtaining a direct current component of each switching power supply circuit includes:
and acquiring the current direct-current component corresponding to the local switching power supply circuit from the data acquisition equipment corresponding to the local switching power supply circuit, and acquiring the current direct-current components corresponding to other switching power supply circuits from the communication bus.
In this embodiment, each execution main body (that is, the parallel operation control device) is connected through the communication bus, so that, for a certain execution main body, it may obtain the positive and negative sequence component data of the local execution main body through the data acquisition device corresponding to the local execution main body, and may also obtain the positive and negative sequence component data corresponding to other switching power supply circuits uploaded by the data acquisition devices corresponding to other switching power supply circuits through the communication bus.
In this embodiment, the data acquisition device may be a data processing device including a current acquisition function.
Each execution main body (that is, the parallel operation control device) is connected through the communication bus, so that for a certain execution main body, the current direct-current component data of the local execution main body can be acquired through the data acquisition equipment corresponding to the local execution main body, and the current direct-current components of other switching power supply circuits uploaded by the data acquisition equipment corresponding to other switching power supply circuits can also be acquired through the communication bus.
In this embodiment, the data acquisition device may be a data processing device including a current acquisition function.
S103: and determining a reference phase voltage adjustment quantity of the local switching power supply circuit based on the voltage direct-current component error and the current direct-current component adjustment quantity.
In this embodiment, the reference phase voltage adjustment amount may be calculated based on the voltage dc component error, and the voltage dc component is applied to the calculation process of the reference phase voltage adjustment amount, so as to adjust the voltage dc and the current dc at the same time.
S104: and adjusting the preset reference phase voltage of the local machine according to the reference phase voltage adjustment amount, and performing current sharing control on the local machine switching power supply circuit based on the adjusted reference phase voltage.
In this embodiment, the reference phase voltage adjustment amount may be superimposed on a preset reference phase voltage of the local machine to obtain an adjusted reference phase voltage, and current sharing control may be performed on the local machine switching power supply circuit based on the adjusted reference phase voltage. The current sharing control of the local switching power supply circuit based on the reference phase voltage belongs to the prior art, and the embodiment of the invention is not described again.
From the above, it can be seen that, unlike the prior art, the embodiment of the present invention further obtains the current dc component of each switching power supply circuit, determines the current dc component adjustment amount of the local switching power supply circuit based on the current dc component of each switching power supply circuit, and achieves the effect of adjusting the current dc while adjusting the voltage dc by introducing the current dc component adjustment amount into the calculation of the reference phase voltage adjustment amount. In other words, the embodiment of the invention can effectively inhibit direct current circulation and better realize the current sharing control of the parallel operation system.
In one possible implementation manner, determining a current dc component adjustment amount of a local switching power supply circuit based on a current dc component of each switching power supply circuit includes:
the reference value of the direct current component is determined based on the direct current component of each switching power supply circuit.
And determining the direct current component adjustment quantity of the local switching power supply circuit based on the reference value of the direct current component and the direct current component of the local switching power supply circuit.
In one possible implementation, determining a reference value of the dc component of the current based on the dc component of the current of each switching power supply circuit includes:
and taking the average value of the current direct-current components of the switching power supply circuits as a reference value of the current direct-current components.
Considering that some loads in the parallel operation system may have a dc component (e.g., a half-wave load), that is, the dc component is not 0, the embodiment of the present invention uses an average value of the dc components of the respective switching power supply circuits as a reference value of the dc component to improve the control accuracy.
In one possible implementation, determining a dc current component adjustment amount of a local switching power supply circuit based on a reference value of a dc current component and the dc current component of the local switching power supply circuit includes:
and determining the current direct-current component error of the local switching power supply circuit based on the reference value of the current direct-current component and the current direct-current component of the local switching power supply circuit.
And inputting the current direct-current component error into a first preset controller to obtain the direct-current component regulating quantity of the local switching power supply circuit.
In this embodiment, the first preset controller may be a proportional controller.
Referring to FIG. 4, the reference value I of the DC component of the current can be obtainedDC_ref(i.e. the average value I of the DC components of the currents of the individual switching power supply circuitsDC_ave) With the direct current component I of the local switching power supply circuitDC_fdbAnd the difference is used as the current direct-current component error of the local switching power supply circuit, and the current direct-current component error is input into the proportional controller to obtain the direct-current component regulating quantity of the local switching power supply circuit.
In one possible implementation, determining a reference phase voltage adjustment amount of a local switching power supply circuit based on a voltage dc component error and a current dc component adjustment amount includes:
and adjusting the voltage direct-current component error based on the current direct-current component adjustment quantity to obtain the adjusted voltage direct-current component error.
And inputting the adjusted voltage direct-current component error into a second preset controller to obtain an initial reference phase voltage adjustment quantity.
And adjusting the initial reference phase voltage adjustment quantity based on the current direct current component adjustment quantity to obtain the reference phase voltage adjustment quantity of the local switching power supply circuit.
In a possible implementation manner, adjusting a voltage dc component error based on a current dc component adjustment amount to obtain an adjusted voltage dc component error includes:
and superposing the current direct-current component regulating quantity on the voltage direct-current component error to obtain the regulated voltage direct-current component error.
In one possible implementation manner, adjusting an initial reference phase voltage adjustment amount based on a current dc component adjustment amount to obtain a reference phase voltage adjustment amount of a local switching power supply circuit includes:
and superposing the current direct-current component regulating quantity on the initial reference phase voltage regulating quantity to obtain the reference phase voltage regulating quantity of the local switching power supply circuit.
Referring to fig. 4, a predetermined reference value U of the dc component of the voltage can be obtainedDC_refVoltage DC component U of local switch power supply circuitDC_fdbThe difference is used as the voltage direct-current component error of the local switching power supply circuit, then the current direct-current component regulating quantity is respectively superposed on the voltage direct-current component error and the initial reference phase voltage regulating quantity so as to realize the regulation of the reference phase voltage regulating quantity, and the current direct-current regulating quantity is introduced into the voltage direct-current regulation so as to better inhibit the circulation current. The current direct-current component regulating quantity is superposed on the initial reference phase voltage regulating quantity (namely, the current direct-current component regulating quantity directly acts on the loop output), so that the response speed of the parallel operation system control can be effectively improved.
In one possible implementation, before the initial reference phase voltage adjustment amount is adjusted based on the current dc component adjustment amount, the parallel operation control method further includes:
the initial reference phase voltage adjustment is clipped.
In this embodiment, before the initial reference phase voltage adjustment amount is adjusted, the initial reference phase voltage adjustment amount may be limited. For example, the initial reference phase voltage adjustment (i.e., the loop output) may be limited to 0.1V to avoid over-control, which may cause the circuit to oscillate. In practical application, the operation can be directly integrated into the controller for realization.
In this embodiment, the second preset controller may be a proportional integral controller.
In a second aspect of the embodiment of the present invention, a parallel operation control device is provided, referring to fig. 2, and fig. 2 is a schematic block diagram of the parallel operation control device according to an embodiment of the present invention. The parallel operation control device 200 in the present embodiment as shown in fig. 2 may include: one or more processors 201, one or more input devices 202, one or more output devices 203, and one or more memories 204. The processor 201, the input device 202, the output device 203 and the memory 204 are communicated with each other through a communication bus 205. The memory 204 is used to store a computer program comprising program instructions. The processor 201 is operable to execute program instructions stored by the memory 204. The processor 201 is configured to call a program instruction to execute the above steps, such as the functions of step S101 to step S104 shown in fig. 1.
It should be understood that, in the embodiment of the present invention, the Processor 201 may be a Central Processing Unit (CPU), and the Processor may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The input device 202 may include a touch pad, a fingerprint sensor (for collecting fingerprint information of a user and direction information of the fingerprint), a microphone, etc., and the output device 203 may include a display (LCD, etc.), a speaker, etc.
The memory 204 may include both read-only memory and random access memory and provides instructions and data to the processor 201. A portion of memory 204 may also include non-volatile random access memory. For example, memory 204 may also store device type information.
In a specific implementation, the processor 201, the input device 202, and the output device 203 described in this embodiment of the present invention may execute the implementation manners described in the first embodiment and the second embodiment of the parallel machine control method provided in this embodiment of the present invention, and may also execute the implementation manner of the parallel machine control apparatus described in this embodiment of the present invention, which is not described herein again.
In another embodiment of the present invention, a computer-readable storage medium is provided, in which a computer program is stored, where the computer program includes program instructions, and the program instructions, when executed by a processor, implement all or part of the processes in the method of the above embodiments, and may also be implemented by a computer program instructing associated hardware, and the computer program may be stored in a computer-readable storage medium, and the computer program, when executed by a processor, may implement the steps of the above methods embodiments. 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 computer program code, recording medium, U.S. 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 media, and the like. It should be noted that the computer readable medium may include any suitable increase or decrease as required by legislation and patent practice in the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The computer readable storage medium may be an internal storage unit of the parallel operation control device of any of the foregoing embodiments, for example, a hard disk or a memory of the parallel operation control device. The computer readable storage medium may also be an external storage device of the parallel machine control apparatus, such as a plug-in hard disk provided on the parallel machine control apparatus, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the computer-readable storage medium may also include both an internal storage unit of the parallel operation control apparatus and an external storage device. The computer-readable storage medium is used for storing computer programs and other programs and data required for the parallel operation control device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. 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.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the parallel machine control device described above may refer to the corresponding process in the foregoing method embodiment, and is not described herein again. In the several embodiments provided in the present application, it should be understood that the disclosed parallel machine control apparatus and method may be implemented in other manners.
In a third aspect of the embodiments of the present invention, a parallel operation system 30 is provided, including:
at least two parallel-connected switching power supply circuits 31, at least two parallel-operation control devices 200, wherein the parallel-operation control devices 200 are connected through a communication bus, and the parallel-operation control devices 200 are correspondingly connected with the switching power supply circuits 31.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A parallel operation control method is characterized in that the parallel operation control method is applied to each switch power supply circuit in a parallel operation system, and the parallel operation system is composed of at least two switch power supply circuits connected in parallel; the parallel operation control method comprises the following steps:
acquiring a voltage direct-current component of a local switching power supply circuit, and determining a voltage direct-current component error based on the voltage direct-current component and a preset voltage direct-current component reference value;
acquiring the current direct-current component of each switching power supply circuit, and determining the current direct-current component regulating quantity of the local switching power supply circuit based on the current direct-current component of each switching power supply circuit;
determining a reference phase voltage adjustment quantity of a local switching power supply circuit based on the voltage direct-current component error and the current direct-current component adjustment quantity;
and adjusting the preset reference phase voltage of the local machine according to the reference phase voltage adjustment amount, and performing current sharing control on the local machine switching power supply circuit based on the adjusted reference phase voltage.
2. The parallel operation control method according to claim 1, wherein the determining the current dc component adjustment amount of the local switching power supply circuit based on the current dc component of each switching power supply circuit includes:
determining a reference value of the current direct-current component based on the current direct-current component of each switching power supply circuit;
and determining the direct current component adjustment quantity of the local switching power supply circuit based on the reference value of the direct current component and the direct current component of the local switching power supply circuit.
3. The parallel operation control method according to claim 2, wherein the determining a reference value of the current dc component based on the current dc component of each switching power supply circuit includes:
and taking the average value of the current direct-current components of the switching power supply circuits as a reference value of the current direct-current components.
4. The parallel operation control method according to claim 2, wherein the determining the dc current component adjustment amount of the local switching power supply circuit based on the reference value of the dc current component and the dc current component of the local switching power supply circuit comprises:
determining a current direct-current component error of the local switching power supply circuit based on the reference value of the current direct-current component and the current direct-current component of the local switching power supply circuit;
and inputting the current direct-current component error into a first preset controller to obtain the direct-current component regulating quantity of the local switching power supply circuit.
5. The parallel operation control method according to claim 1, wherein the determining a reference phase voltage adjustment amount of a local switching power supply circuit based on the voltage direct current component error and the current direct current component adjustment amount comprises:
adjusting the voltage direct-current component error based on the current direct-current component adjustment quantity to obtain an adjusted voltage direct-current component error;
inputting the adjusted voltage direct-current component error into a second preset controller to obtain an initial reference phase voltage adjustment quantity;
and adjusting the initial reference phase voltage adjustment quantity based on the current direct current component adjustment quantity to obtain the reference phase voltage adjustment quantity of the local switching power supply circuit.
6. The parallel operation control method according to claim 5, wherein the adjusting the voltage dc component error based on the current dc component adjustment amount to obtain an adjusted voltage dc component error comprises:
and superposing the current direct-current component regulating quantity on the voltage direct-current component error to obtain the regulated voltage direct-current component error.
7. The parallel operation control method according to claim 5, wherein before the initial reference phase voltage adjustment amount is adjusted based on the current dc component adjustment amount, the parallel operation control method further comprises:
the initial reference phase voltage adjustment is clipped.
8. The parallel operation control method according to claim 5, wherein the adjusting an initial reference phase voltage adjustment amount based on the current dc component adjustment amount to obtain a reference phase voltage adjustment amount of a local switching power supply circuit comprises:
and superposing the current direct-current component regulating quantity on the initial reference phase voltage regulating quantity to obtain the reference phase voltage regulating quantity of the local switching power supply circuit.
9. Parallel operation control device 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 claims 1 to 8 when executing the computer program.
10. A parallel operation system, comprising:
at least two parallel-connected switching power supply circuits, at least two parallel-connected control devices according to claim 9, each parallel-connected control device being connected via a communication bus, the parallel-connected control devices being connected in one-to-one correspondence with the switching power supply circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166038.2A CN114070010A (en) | 2021-09-30 | 2021-09-30 | Parallel operation control method and device and parallel operation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166038.2A CN114070010A (en) | 2021-09-30 | 2021-09-30 | Parallel operation control method and device and parallel operation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114070010A true CN114070010A (en) | 2022-02-18 |
Family
ID=80234143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111166038.2A Pending CN114070010A (en) | 2021-09-30 | 2021-09-30 | Parallel operation control method and device and parallel operation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114070010A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582591A (en) * | 2009-06-17 | 2009-11-18 | 杭州华三通信技术有限公司 | Chassis power distribution method and device |
| CN104242712A (en) * | 2013-06-06 | 2014-12-24 | 阳光电源（上海）有限公司 | Inverter parallel system and control method thereof |
| US20160357202A1 (en) * | 2015-01-13 | 2016-12-08 | Itech Electronic Co.,Ltd | Parallel current-sharing device and control method without current-sharing bus |
| TWI578687B (en) * | 2015-10-13 | 2017-04-11 | 國立清華大學 | Three-phase inverting apparatus and control method and paralleled power conversion system thereof |
| CN112165244A (en) * | 2020-10-26 | 2021-01-01 | 合肥同智机电控制技术有限公司 | Output current-sharing control method for master-slave parallel inverter |
-
2021
- 2021-09-30 CN CN202111166038.2A patent/CN114070010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582591A (en) * | 2009-06-17 | 2009-11-18 | 杭州华三通信技术有限公司 | Chassis power distribution method and device |
| CN104242712A (en) * | 2013-06-06 | 2014-12-24 | 阳光电源（上海）有限公司 | Inverter parallel system and control method thereof |
| US20160357202A1 (en) * | 2015-01-13 | 2016-12-08 | Itech Electronic Co.,Ltd | Parallel current-sharing device and control method without current-sharing bus |
| TWI578687B (en) * | 2015-10-13 | 2017-04-11 | 國立清華大學 | Three-phase inverting apparatus and control method and paralleled power conversion system thereof |
| CN112165244A (en) * | 2020-10-26 | 2021-01-01 | 合肥同智机电控制技术有限公司 | Output current-sharing control method for master-slave parallel inverter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112751400A (en) | Current-sharing control method for power supply parallel operation system and terminal equipment | |
| CN111697556A (en) | Operation control method of electrical equipment and terminal equipment | |
| CN111984047B (en) | Multi-module system current sharing control method and device and terminal equipment | |
| CN112653330B (en) | Control method for improving LLC resonant circuit load dynamic response and terminal equipment | |
| CN114069821A (en) | Switching power supply circuit control method and device and power supply system | |
| US11817776B2 (en) | Power factor correction control method, apparatus, and device, and storage medium | |
| CN114070010A (en) | Parallel operation control method and device and parallel operation system | |
| CN106851484B (en) | Controller for audio system | |
| CN116488263A (en) | Anti-reflux control method, control equipment, system and medium for optical storage system | |
| CN114070011A (en) | Parallel operation control method and device and parallel operation system | |
| CN115473412A (en) | Control method, device, terminal and storage medium of DC-DC converter | |
| CN116185164A (en) | Voltage regulating method and related device | |
| CN112838657B (en) | Control method and device of charging system and terminal equipment | |
| CN113422506B (en) | Power supply slow start control method and power supply | |
| CN114640258A (en) | Compensation type alternating current voltage stabilizer control method, control device and control terminal | |
| CN115296532A (en) | Control method and device of booster circuit and electronic equipment | |
| CN114567034A (en) | Control method and device of battery charge-discharge module, terminal and storage medium | |
| CN113922329B (en) | Power supply circuit adjusting method and device and power supply system | |
| CN117477971A (en) | Control method and device of rectifying circuit, controller and storage medium | |
| CN115118143A (en) | DC converter control method, control terminal and storage medium | |
| CN111614100B (en) | Alternating voltage control method and device and terminal equipment | |
| CN114301158A (en) | UPS bus capacitor ripple optimization control method and control terminal | |
| CN117674255A (en) | Control method, controller and photovoltaic system | |
| KR20230004426A (en) | Non-contact systems and methods for reducing electromagnetic interference in non-contact systems | |
| CN113708479A (en) | PFC control method and terminal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |