CN208820478U - A kind of photovoltaic combining inverter with double-core control system - Google Patents
A kind of photovoltaic combining inverter with double-core control system Download PDFInfo
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- CN208820478U CN208820478U CN201821621209.XU CN201821621209U CN208820478U CN 208820478 U CN208820478 U CN 208820478U CN 201821621209 U CN201821621209 U CN 201821621209U CN 208820478 U CN208820478 U CN 208820478U
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Abstract
The utility model relates to photovoltaic DC-to-AC converter technical fields; refer in particular to a kind of photovoltaic combining inverter with double-core control system comprising the first DSP module, the second DSP module, GPIO module, display module, communication module, MPPT control module, dead beat cutting-in control module, signal sampling module and protective module；First DSP module is connect by GPIO module with the second DSP module; display module, communication module and MPPT control module are electrically connected with the first DSP module respectively; second DSP module is electrically connected with dead beat cutting-in control module; first DSP module and second DSP module are electrically connected with signal sampling module, and first DSP module and second DSP module are electrically connected with protective module.The utility model improves the stability and reliability of work, improves transformation efficiency and track with zero error, reduces common mode current, promotes grid-connected security reliability.
Description
Technical field
The utility model relates to photovoltaic DC-to-AC converter technical field, a kind of photovoltaic with double-core control system is referred in particular to simultaneously
Net inverter.
Background technique
Photovoltaic combining inverter is the core component of solar power generation, is by solar cell panel voltages through DC/DC direct current
To DC boosting, and the tracking of maximum power point MPPT is carried out, to DC/AC direct current to ac converter, exported and the same voltage of power grid
The alternating current of same frequency same-phase needs largely the various signals such as processing voltage, electric current, frequency, power in real time in the process,
And the monitoring of island effect is carried out simultaneously.DSP can complete it is above work, and complete various defencive functions with software.So only
Using only the defencive function that existing single dsp software system is completed, speed is slower when protection, and single DSP control, work
Efficiency is lower, and installation is poor.
Utility model content
The utility model provides a kind of photovoltaic combining inverter with double-core control system for problem of the prior art,
The processing capacity of photovoltaic combining inverter, and the first DSP module and the mutually coordinated work of the second DSP module are improved, is mutually supervised
Cooperating is controlled, the stability and reliability of work are improved, and by the tracking of control MPPT, improves transformation efficiency and nothing
Beat control reduces common mode current, promotes grid-connected security reliability, and under the action of protective module, protect grid-connected
System, the first DSP module and the second DSP module.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of photovoltaic combining inverter with double-core control system provided by the utility model, including the first DSP module,
Second DSP module, GPIO module, display module, communication module, MPPT control module, dead beat cutting-in control module, signal are adopted
Egf block and protective module；First DSP module is connect by GPIO module with the second DSP module, and the display module leads to
Letter module and MPPT control module are electrically connected with the first DSP module respectively, second DSP module and dead beat cutting-in control mould
Block electrical connection, first DSP module and second DSP module are electrically connected with signal sampling module, the first DSP mould
Block and second DSP module are electrically connected with protective module.
Wherein, the signal sampling module includes that network voltage sampling module, power network current sampling module, mains frequency are adopted
Egf block, grid-connected output voltage sampling module, grid-connected output current sampling module and power grid temperature sampling module, network voltage are adopted
Egf block, power network current sampling module, mains frequency sampling module, grid-connected output voltage sampling module, grid-connected output electric current are adopted
Egf block and power grid temperature sampling module are electrically connected with the first DSP module respectively, network voltage sampling module, power network current sampling
Module, mains frequency sampling module, grid-connected output voltage sampling module, grid-connected output current sampling module and power grid temperature sampling
Module is electrically connected with the second DSP module respectively.
Wherein, the protective module includes current foldback circuit, thermal-shutdown circuit and over-and under-voltage protection circuit, overcurrent
Protection circuit, thermal-shutdown circuit and over-and under-voltage protection circuit are electrically connected with the first DSP module respectively, current foldback circuit,
Thermal-shutdown circuit and over-and under-voltage protection circuit are electrically connected with the second DSP module respectively.
Wherein, first DSP module includes that the first DSP controls chip, the model of the first DSP control chip
TMS320F28035。
Wherein, second DSP module includes that the 2nd DSP controls chip, the model of the 2nd DSP control chip
TMS320F28035。
Wherein, the communication module is WIFI232 module.
Wherein, the WIFI232 module uses TCP transmission agreement.
The utility model has the beneficial effects that
The utility model structure is simple, design rationally, by signal acquisition module can to network voltage, power network current,
Mains frequency, grid-connected output voltage, grid-connected output electric current and power grid temperature carry out signal acquisition, the first DSP module and second
DSP module is attached by existing GPIO module interface, and the first DSP module and the second DSP module pass through existing skill
Drive module in art is connected with photovoltaic combining inverter；First DSP module and the second DSP module can be according to signal acquisitions
Network voltage, power network current, mains frequency, grid-connected output voltage, grid-connected output electric current and power grid temperature carry out operation, lead to
Cross MPPT control module complete photovoltaic cell maximum power MPPT tracking, the first DSP module can to MPPT control module into
Row control carries out tracing control to the maximum power point of photovoltaic cell, and can be by collected data from display module
It is shown, host computer can also be sent data to using wireless transmission by communication module, number is shown by host computer
According to data collection is convenient, using flexible, convenient for monitoring；The display module can be LCD display；Further, described
Two DSP modules can control dead beat cutting-in control module, the first DSP module and second according to collected data
DSP module, the two DSP modules can network voltages to entire photovoltaic system, power network current, mains frequency, grid-connected defeated
Voltage, grid-connected output electric current and power grid temperature carry out signal acquisition out, and using protective module to photovoltaic combining inverter
It carries out overcurrent protection, overheat protector and over-and under-voltage protection, the utility model and passes through the first DSP module and the second DSP module
Control, improve the processing capacity of photovoltaic combining inverter, and the first DSP module and the mutually coordinated work of the second DSP module,
Mutually monitoring cooperating improves the stability and reliability of work, and by the tracking of control MPPT, improves transformation efficiency
And track with zero error, common mode current is reduced, promotes grid-connected security reliability, and under the action of protective module, is protected
Good grid-connected system, the first DSP module and the second DSP module.
Detailed description of the invention
Fig. 1 is a kind of functional block diagram of photovoltaic combining inverter with double-core control system of the utility model.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.The utility model is carried out below in conjunction with attached drawing
Detailed description.
A kind of photovoltaic combining inverter with double-core control system, including the first DSP module, the second DSP module, GPIO
Module, display module, communication module, MPPT control module, dead beat cutting-in control module, signal sampling module and protection mould
Block；
First DSP module is connect by GPIO module with the second DSP module, the display module, communication module and
MPPT control module is electrically connected with the first DSP module respectively, and second DSP module is electrically connected with dead beat cutting-in control module
It connects, first DSP module and second DSP module are electrically connected with signal sampling module, first DSP module and institute
The second DSP module is stated to be electrically connected with protective module.
Specifically, the utility model structure is simple, and design rationally, can be to network voltage, electricity by signal acquisition module
Net electric current, mains frequency, grid-connected output voltage, grid-connected output electric current and power grid temperature carry out signal acquisition, the first DSP module
It is attached with the second DSP module by existing GPIO module interface, and the first DSP module and the second DSP module pass through
Drive module in the prior art is connected with photovoltaic combining inverter；First DSP module and the second DSP module can be according to letters
Number acquisition network voltage, power network current, mains frequency, grid-connected output voltage, grid-connected output electric current and power grid temperature progress
Operation is tracked by the maximum power MPPT that MPPT control module completes photovoltaic cell, and the first DSP module can control MPPT
Module is controlled, and carries out tracing control to the maximum power point of photovoltaic cell, and can be by collected data from display
It is shown in module, host computer can also be sent data to using wireless transmission by communication module, it is aobvious by host computer
Registration evidence, data collection is convenient, using flexible, convenient for monitoring；The display module can be LCD display；Further, institute
Dead beat cutting-in control module can be controlled according to collected data by stating the second DSP module, the first DSP module and
Second DSP module, the two DSP modules can network voltage to entire photovoltaic system, power network current, mains frequencies, simultaneously
Net output voltage, grid-connected output electric current and power grid temperature carry out signal acquisition, and using protective module to grid-connected inverse
Become device progress overcurrent protection, overheat protector and over-and under-voltage protection, the utility model and passes through the first DSP module and the 2nd DSP
The control of module improves the processing capacity of photovoltaic combining inverter, and the first DSP module and the second DSP module are mutually coordinated
Work, mutually monitoring cooperating improve the stability and reliability of work, and by the tracking of control MPPT, improve and turn
Change efficiency and track with zero error, reduces common mode current, promote grid-connected security reliability, and in the effect of protective module
Under, protect grid-connected system, the first DSP module and the second DSP module.
A kind of photovoltaic combining inverter with double-core control system described in the present embodiment, the signal sampling module packet
Include network voltage sampling module, power network current sampling module, mains frequency sampling module, grid-connected output voltage sampling module, simultaneously
Net output current sampling module and power grid temperature sampling module, network voltage sampling module, power network current sampling module, power grid frequency
Rate sampling module, grid-connected output voltage sampling module, grid-connected output current sampling module and power grid temperature sampling module respectively with
The electrical connection of first DSP module, network voltage sampling module, power network current sampling module, mains frequency sampling module, grid-connected output
Voltage sample module, grid-connected output current sampling module and power grid temperature sampling module are electrically connected with the second DSP module respectively.Tool
Body, it is sampled by network voltage sampling module, power network current sampling module, mains frequency sampling module, grid-connected output voltage
Module, grid-connected output current sampling module and power grid temperature sampling module can be respectively to network voltage, power network current, power grid frequencies
Rate, grid-connected output voltage, grid-connected output electric current and power grid temperature are sampled, and send data to the first DSP mould respectively
Block and the second DSP module, by the first DSP module and the second DSP module is acquired respectively to data and operation, then unites
It raises, completes the control to photovoltaic synchronization inverter system.
A kind of photovoltaic combining inverter with double-core control system, the protective module described in the present embodiment included
Stream protection circuit, thermal-shutdown circuit and over-and under-voltage protect circuit, current foldback circuit, thermal-shutdown circuit and over-and under-voltage
Protection circuit is electrically connected with the first DSP module respectively, current foldback circuit, thermal-shutdown circuit and over-and under-voltage protection circuit point
It is not electrically connected with the second DSP module.Specifically, circuit is protected by current foldback circuit, thermal-shutdown circuit and over-and under-voltage
First DSP module and the second DSP module can be protected, complete protection to photovoltaic synchronization inverter system, using can
It leans on, safety is good.
A kind of photovoltaic combining inverter with double-core control system described in the present embodiment, the first DSP module packet
Include the first DSP control chip, the model TMS320F28035 of the first DSP control chip.
A kind of photovoltaic combining inverter with double-core control system described in the present embodiment, the second DSP module packet
Include the 2nd DSP control chip, the model TMS320F28035 of the 2nd DSP control chip.
A kind of photovoltaic combining inverter with double-core control system, the communication module described in the present embodiment are
WIFI232 module.Specifically, the WIFI232 module selects AP+Staition operating mode, AP+Staition operating mode
AP can be accessed as Station, also can serve as the WIFI232 mould of ap mode for other accessing terminal to network, this operating mode
Block is linked into router, and the WIFI232 module of Station mode is added in the network of current WIFI232 module creation, composition one
A network that can access internet, it is easy to use.
A kind of photovoltaic combining inverter with double-core control system described in the present embodiment, the WIFI232 module are adopted
With TCP transmission agreement.Specifically, TCP transmission agreement is sent to towards connecting and guarantee data security, and is passed through towards connection
A channel is established between two ends, passway caches to store the data received or sent, TCP transmission association there are Socket
View takes a series of measure to ensure that the safety of data reaches, and specifically has data re-transmission, destination to give what data received
Feedback etc. has ensured that data finally can all be received by the end for wanting to send；Only it is responsible for hair relative to traditional UDP transport protocol
It send, and not face connects, and does not ensure eventually to arrive at the destination, can guarantee that data can finally all using TCP transmission agreement
It can be received by the end for wanting to send.
The above is only the utility model preferred embodiment, is not made in any form to the utility model
Limitation, although the utility model is disclosed as above with preferred embodiment, is not intended to limit the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, makes when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, but it is all without departing from the content of the technical scheme of the utility model, foundation
The utility model technology refers to any simple modification, equivalent change and modification to the above embodiments, belongs to practical
In the range of new technique scheme.
Claims (7)
1. a kind of photovoltaic combining inverter with double-core control system, it is characterised in that: including the first DSP module, the 2nd DSP
Module, GPIO module, display module, communication module, MPPT control module, dead beat cutting-in control module, signal sampling module
And protective module；
First DSP module is connect by GPIO module with the second DSP module, the display module, communication module and MPPT
Control module is electrically connected with the first DSP module respectively, and second DSP module is electrically connected with dead beat cutting-in control module, institute
It states the first DSP module and second DSP module is electrically connected with signal sampling module, first DSP module and described
Two DSP modules are electrically connected with protective module.
2. a kind of photovoltaic combining inverter with double-core control system according to claim 1, it is characterised in that: described
Signal sampling module includes network voltage sampling module, power network current sampling module, mains frequency sampling module, grid-connected output electricity
Pressure sampling module, grid-connected output current sampling module and power grid temperature sampling module, network voltage sampling module, power network current are adopted
Egf block, mains frequency sampling module, grid-connected output voltage sampling module, grid-connected output current sampling module and power grid temperature are adopted
Egf block is electrically connected with the first DSP module respectively, network voltage sampling module, power network current sampling module, mains frequency sampling
Module, grid-connected output voltage sampling module, grid-connected output current sampling module and power grid temperature sampling module respectively with the 2nd DSP
Module electrical connection.
3. a kind of photovoltaic combining inverter with double-core control system according to claim 1, it is characterised in that: described
Protective module includes current foldback circuit, thermal-shutdown circuit and over-and under-voltage protection circuit, current foldback circuit, overheat protector
Circuit and over-and under-voltage protection circuit are electrically connected with the first DSP module respectively, current foldback circuit, thermal-shutdown circuit and over-voltage
Under-voltage protecting circuit is electrically connected with the second DSP module respectively.
4. a kind of photovoltaic combining inverter with double-core control system according to claim 1, it is characterised in that: described
First DSP module includes that the first DSP controls chip, the model TMS320F28035 of the first DSP control chip.
5. a kind of photovoltaic combining inverter with double-core control system according to claim 1, it is characterised in that: described
Second DSP module includes that the 2nd DSP controls chip, the model TMS320F28035 of the 2nd DSP control chip.
6. a kind of photovoltaic combining inverter with double-core control system according to claim 1, it is characterised in that: described
Communication module is WIFI232 module.
7. a kind of photovoltaic combining inverter with double-core control system according to claim 6, it is characterised in that: described
WIFI232 module uses TCP transmission agreement.
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| CN201821621209.XU CN208820478U (en) | 2018-09-30 | 2018-09-30 | A kind of photovoltaic combining inverter with double-core control system |
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| CN201821621209.XU CN208820478U (en) | 2018-09-30 | 2018-09-30 | A kind of photovoltaic combining inverter with double-core control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088437A (en) * | 2018-09-30 | 2018-12-25 | 东莞市钜大电子有限公司 | A kind of photovoltaic combining inverter with double-core control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088437A (en) * | 2018-09-30 | 2018-12-25 | 东莞市钜大电子有限公司 | A kind of photovoltaic combining inverter with double-core control system |
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