CN202617033U - Synchronous control circuit for parallel inverter system - Google Patents
Synchronous control circuit for parallel inverter system Download PDFInfo
- Publication number
- CN202617033U CN202617033U CN 201220209627 CN201220209627U CN202617033U CN 202617033 U CN202617033 U CN 202617033U CN 201220209627 CN201220209627 CN 201220209627 CN 201220209627 U CN201220209627 U CN 201220209627U CN 202617033 U CN202617033 U CN 202617033U
- Authority
- CN
- China
- Prior art keywords
- control unit
- inverter
- parallel
- control circuit
- slave
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses a synchronous control circuit for parallel inverter system, comprising a master control unit and at least one slave control unit, wherein the master control unit is orderly connected with the slave control units and is used for connection with a DCDC booster module and a DCAC conversion module in a master inverter, and the slave control units are respectively used for connection with DCDC booster modules and DCAC conversion modules in corresponding slave inverters; the synchronous control circuit has the advantages of implementing mutual communication between the master inverter and each of the slave inverters, and ensuring that signals output by the DC/AC conversion modules in the slave inverters are kept synchronous with a signal output by the DC/AC conversion module in the master inverter, thus avoiding the generation of loop current and improving the stability and reliability of parallel inverter system.
Description
Technical field
The utility model relates to a kind of parallel-type converter system, especially relates to a kind of synchronization control circuit that is used for the parallel-type converter system.
Background technology
Existing parallel-type converter system generally comprise main inverter being connected in parallel with at least one from inverter; Main inverter is with identical from inverter structure; Generally comprise DC/DC boost module and DC/AC modular converter; The output of DC/DC boost module is connected with the input of DC/AC modular converter, and the input of DC/DC boost module is used to connect storage battery.Because main inverter and each is from liking between the inverter that you are independent and not carrying out communication each other in the parallel-type converter system; So that main inverter is difficult to synchronously with each control signal of DC/DC boost module and DC/AC modular converter from inverter; Main inverter is asynchronous with the signal of each DC/AC modular converter output from inverter; Thereby occur voltage difference at main inverter and each from inverter output end, produce circulation, inverter is impacted; Even damage, influence the stability and the reliability of parallel-type converter system.
Summary of the invention
The utility model technical problem to be solved provides a kind of circulation of can avoiding producing, and realizes the synchronous synchronization control circuit that is used for the parallel-type converter system of each inverter output.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of synchronization control circuit that is used for the parallel-type converter system; Comprise that a main control unit and at least one are from control unit; Described main control unit describedly is connected from control unit with each; Described main control unit is used for connecting the DCDC boost module and the DCAC modular converter of main inverter, and each described being respectively applied for from control unit connects corresponding DCDC boost module and DCAC modular converter from inverter.
Described main control unit and described be that singlechip chip and the peripheral circuit of PIC18F1320 formed from control unit by splicing ear, model.
Compared with prior art; The advantage of the utility model is through main control unit is connected from control unit with each successively; Realize main inverter and each from communication each other between the inverter, main control unit is transferred to each respectively from inverter with synchronizing signal (cyclic pulse signal), and each is as the criterion with this cyclic pulse signal from inverter; Accurately proofread and correct the timer of oneself; Proofread and correct the phase place of sinusoidal output phase and PWM, the phase difference that guarantees PWM is less than the PWM Dead Time that is provided with, and promptly the signal of DC/AC modular converter output keeps synchronously in the signal of each DC/AC modular converter output from inverter and the main inverter; Avoid producing circulation, improve the stability and the reliability of parallel-type converter system.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model;
Fig. 3 is the structured flowchart of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1; A kind of synchronization control circuit that is used for the parallel-type converter system; Comprise that a main control unit 1 and at least one are from control unit 2; Main control unit 1 is connected from control unit 2 with each successively, and main control unit 1 is used for connecting the DCDC boost module and the DCAC modular converter of main inverter, and each is respectively applied for from control unit 2 and connects corresponding DCDC boost module and DCAC modular converter from inverter.
As shown in Figure 2, main control unit 1 is identical with each circuit structure from control unit 2, all can be made up of the splicing ear of 3PIN, singlechip chip and the peripheral circuit that model is PIC18F1320.
Embodiment: as shown in Figure 3; When the utility model is used for the parallel-type converter system; The signal output part of the DCDC boost module in the signal input part of main control unit 1 and the main inverter 3 is connected; The signal input part of the DCAC modular converter in the signal output part of main control unit 1 and the main inverter 3 is connected; Each connects with the signal output part of corresponding each DCDC boost module from inverter 4 from the signal input part of control unit 2; Each connects with the signal input part of corresponding each DCDC boost module from inverter 4 from the signal output part of control unit 2, and the synchronizing signal control end of main control unit 1 is connected with each synchronizing signal control end from control unit 2.
Claims (2)
1. synchronization control circuit that is used for the parallel-type converter system; It is characterized in that comprising that a main control unit and at least one are from control unit; Described main control unit describedly is connected from control unit with each successively; Described main control unit is used for connecting the DCDC boost module and the DCAC modular converter of main inverter, and each described being respectively applied for from control unit connects corresponding DCDC boost module and DCAC modular converter from inverter.
2. a kind of synchronization control circuit that is used for the parallel-type converter system according to claim 1, it is characterized in that described main control unit and described be that singlechip chip and the peripheral circuit of PIC18F1320 formed from control unit by splicing ear, model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209627 CN202617033U (en) | 2012-05-10 | 2012-05-10 | Synchronous control circuit for parallel inverter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209627 CN202617033U (en) | 2012-05-10 | 2012-05-10 | Synchronous control circuit for parallel inverter system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617033U true CN202617033U (en) | 2012-12-19 |
Family
ID=47350702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220209627 Expired - Fee Related CN202617033U (en) | 2012-05-10 | 2012-05-10 | Synchronous control circuit for parallel inverter system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202617033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426752A (en) * | 2013-08-28 | 2015-03-18 | Ls产电株式会社 | Data sharing system between master inverter and slave inverter |
| CN110190768A (en) * | 2018-02-22 | 2019-08-30 | 固纬电子实业股份有限公司 | DC communication current converter and its current sharing control method |
-
2012
- 2012-05-10 CN CN 201220209627 patent/CN202617033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426752A (en) * | 2013-08-28 | 2015-03-18 | Ls产电株式会社 | Data sharing system between master inverter and slave inverter |
| CN104426752B (en) * | 2013-08-28 | 2018-05-15 | Ls产电株式会社 | Main inverter and from the data-sharing systems between inverter |
| CN110190768A (en) * | 2018-02-22 | 2019-08-30 | 固纬电子实业股份有限公司 | DC communication current converter and its current sharing control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130234641A1 (en) | Converter system | |
| CN202535290U (en) | Photovoltaic inverter circuit | |
| CN101604923A (en) | The pulse width modulation (PWM) control method that is used for single-phase grid-connected inverter | |
| GB2514036A (en) | Techniques for grid coupling photovoltaic cells using ratiometric voltage conversion | |
| EP2403121A3 (en) | Solar power generation system and method | |
| CN103312184A (en) | Power circuit, current transformer structure and wind generator system comprising both | |
| CN102983765A (en) | Efficient no-transformer single phase photovoltaic grid-connected inverter | |
| CN102868311A (en) | Inverter input-stage circuit with wide voltage input range and inverter | |
| JP2015050933A (en) | Solar inverter | |
| CN202617033U (en) | Synchronous control circuit for parallel inverter system | |
| CN202435113U (en) | Inverter auxiliary power supply electricity-getting circuit | |
| CN103560523A (en) | Photovoltaic generator set low-voltage ride-through supporting system based on DVR | |
| CN105305493A (en) | Independent light-storage micro-grid topology for interconnected operation | |
| CN202889244U (en) | Off-grid direct-current-to-alternating-current system | |
| CN103312206A (en) | Efficient inverter | |
| CN103337873A (en) | Photovoltaic power generation system | |
| CN204012739U (en) | A kind of hybrid energy-storing power conversion system | |
| CN204333973U (en) | A kind of schedulable formula bimodulus inverter | |
| CN203313084U (en) | High-efficiency inverter | |
| WO2012034256A1 (en) | Cellular photovoltaic power station | |
| CN203457068U (en) | Novel dual-mode bidirectional converter | |
| CN203135743U (en) | Hybrid DCAC current transformer | |
| CN202617027U (en) | Automatic current balancing circuit for parallel inverter system | |
| CN102882414A (en) | Off-grid direct-current-to-alternating-current system | |
| CN201867482U (en) | Aging device for current converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20180510 |