A kind of solar power system
Technical field
The utility model is related to technical field of solar, and in particular to a kind of solar power system.
Background technology
Energy shortage problem is one of the problem of being concerned 21 century, in order to solve the problems, such as this, with wind energy and the sun
Regenerative resource based on energy worldwide has been more and more widely used.Wherein, the currently a popular distributed sun
Energy grid-connected system mainly includes the electricity generation system based on the micro- inverter of solar energy and uses solar panel ceiling capacity
Optimize the system of device, both of which can optimize the working condition of every piece of solar panel, improve energy output.
But during the electricity generation system use based on the micro- inverter of solar energy, be blocked due to the part of solar panel or
Percentage of batteries breaks down on person's solar panel, and the curve of output of entire solar panel will become complicated in such cases, usually
It has multiple peak values to occur, a solar panel ceiling capacity optimization device can only track a peak value, if only tracked
First peak value can not then ensure that the peak value tracked out is actual peak-peak, and final if to have tracked all peak values
It is nearby maximum power point (mpp) to determine maximum peak value, due to having lost a large amount of power during tracking, equally can not
Realize the maximum power output of entire solar panel.
Utility model content
Therefore, the technical problems to be solved in the utility model be to overcome an energy optimizing device of the prior art without
Method realizes the problem of energy maximization output.
For this purpose, the utility model provides a kind of solar power system, including:
N block solar panels, for receiving sunlight, and convert thereof into electric energy;
N number of power optimization module, with the N blocks solar panel correspond, input terminal with it is corresponding it is described too
The output terminal of positive energy solar panel is electrically connected, for optimizing the output power of the solar panel, and N number of power optimization mould
The output terminal of block connects to form a total output terminal;
DC converter, input terminal and total output terminal of N number of power optimization module are electrically connected;
Inverter, the output terminal of input terminal and the DC converter are electrically connected;
Load and city's power supply network are electrically connected respectively with the output terminal of the inverter, while the load and the city
Power supply network is electrically connected;
First control switch, is arranged between the inverter and the load;
Second control switch, is arranged between city's power supply network and the load;
Control unit is electrically connected respectively with the described first control switch and the second control switch, for controlling
State the open or close of the first control switch and the described second control switch.
Optionally, the power optimization module includes:
MPPT maximum power point tracking controller, the output terminal of input terminal and the solar panel are electrically connected, are used for
The output voltage and/or current signal of the solar panel are gathered, and then the maximum for obtaining the solar panel is defeated
Go out power to be used as with reference to signal output;
Power inverter, the output terminal of input terminal and the MPPT maximum power point tracking controller is electrically connected, for connecing
It receives the reference signal and obtains the output transform of the solar panel into the MPPT maximum power point tracking controller
Peak power output value is exported.
Optionally, further include:
3rd control switch, is arranged between the inverter and city's power supply network, and electrical with described control unit
Connection controls it to switch or be closed by described control unit.
Optionally, further include:
Energy-storage module is electrically connected respectively with the output terminal of the inverter and the load;
4th control switch, is arranged between the energy-storage module and the inverter, and electrical with described control unit
Connection controls it to switch or be closed by described control unit;
5th control switch, is arranged between the energy-storage module and the load, and electrically connects with described control unit
It connects, by described control unit it is controlled to switch or be closed.
Optionally, further include:
Monitor terminal is electrically connected with the DC converter, for monitoring the generated energy of the DC converter in real time.
Optionally, it is two-way communication between the monitor terminal and the DC converter.
Optionally, the two-way communication between the monitor terminal and the DC converter is wireless communication or wired
Communication.
Optionally, the N blocks solar panel is in square array or circle array distribution.
Solar power system provided by the utility model has the following advantages compared with the prior art:
Solar power system provided by the utility model, each solar panel correspond to a power optimization mould
Block, the voltage or current curve of power optimization module output when solar panel partial occlusion either electric partial destruction
Relatively easy, peak value is for one or a limited number of a, can facilitate the maximization for realizing a solar panel output energy,
And then realize the maximization of entire solar power system output energy.In addition, load is electric with inverter and city's power supply network simultaneously
Property connection, and between inverter and load set first control switch, city's power supply network and load between set second control
System switch, control unit can control the open or close of the first control switch and the described second control switch, therefore, use simultaneously
Family can select the energy source of load, and when the first control of closure switchs, i.e. selection is by solar powered, the second control of closure
During switch, i.e. selection is powered by city's power supply network.In this way, it avoids the uncertainty of solar energy resources and causes load can not be just
What is often used happens.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram of solar power system provided by the utility model;
Fig. 2 is the structure diagram of power optimization module in solar power system provided by the utility model;
Fig. 3 is the control schematic diagram of the control unit in solar power system provided by the utility model;
Reference sign:
1- solar panels;
2- power optimization modules;201- MPPT maximum power point tracking controllers;202- power inverters;
3- DC converters;4- inverters;5- is loaded;6- cities power supply network;7- energy-storage modules;The control switches of 8- first;9-
Second control switch;The control switches of 10- the 3rd;The control switches of 11- the 4th;The control switches of 12- the 5th;13- control units;14-
Monitor terminal.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected scope.
, it is necessary to which explanation, term " first ", " second ", " the 3rd " etc. are only used for retouching in the description of the utility model
Purpose is stated, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection;Can be mechanical connection or electrical connection;It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not forming conflict can be combined with each other.
Embodiment
A kind of solar power system is present embodiments provided, including N blocks solar panel 1, N number of power optimization module
2nd, DC converter 3, inverter 4, load 5, the control of city's power supply network 6 and first the 8, second control of switch switch 9, control unit
13。
N blocks solar panel 1 converts thereof into electric energy for receiving sunlight;
N number of power optimization module 2 and N blocks solar panel 1 corresponds, input terminal and corresponding solar cell
The output terminal of plate 1 is electrically connected, for optimizing the output power of solar panel 1, and the output of N number of power optimization module 2
End series connection forms a total output terminal;
The input terminal of DC converter 3 and total output terminal of N number of power optimization module 2 are electrically connected;
The input terminal of inverter 4 is electrically connected with the output terminal of DC converter 3;
Load 5 and city's power supply network 6 are electrically connected respectively with the output terminal of inverter 4, while load 5 and 6 electricity of city's power supply network
Property connection;
First control switch 8 is arranged between inverter 4 and load 5;
Second control switch 9 is arranged between city's power supply network 6 and load 5;
Control unit 13 is electrically connected respectively with the first control switch 8 and the second control switch 9, for controlling the first control
The open or close of 8 and second control switch 9 of switch.
Solar power system provided by the utility model, each solar panel 1 correspond to a power optimization mould
Block 2, when 1 partial occlusion of solar panel either electric partial destruction, the voltage of 2 output of power optimization module or electric current are bent
Line is relatively easy, and peak value is for one or a limited number of a, can facilitate the maximum for realizing that a solar panel 1 exports energy
Change, and then realize the maximization of entire solar power system output energy.
In addition, load 5 is electrically connected simultaneously with inverter 4 and city's power supply network 6, and set between inverter 4 and load 5
The first control switch 8 is put, the second control switch 9 is set between city's power supply network 6 and load 5, and control unit 13 being capable of same time control
The open or close of the first control of system switch 8 and the second control switch 9, therefore, user can select the energy source of load 5,
When being closed the first control switch 8, i.e., selection is by solar powered, and when being closed the second control switch 9, i.e. selection is powered by city
Net 6 is powered.In this way, avoid the uncertainty of solar energy resources and cause load 5 can not normal use happen.
As a kind of embodiment of the utility model, in the present embodiment, power optimization module 2 include maximum power point with
Track controller 201 and power inverter 202;
The input terminal of MPPT maximum power point tracking controller 201 is electrically connected with the output terminal of solar panel 1, for adopting
Collect the output voltage and/or current signal of solar panel 1, and then the peak power output for obtaining solar panel 1 is made
It is exported for reference signal;
The input terminal of power inverter 202 is electrically connected with the output terminal of MPPT maximum power point tracking controller 201, for connecing
Receive reference signal and the maximum output for obtaining the output transform of solar panel 1 into MPPT maximum power point tracking controller 201
Performance number is exported.
As a kind of embodiment of the utility model, in the present embodiment, solar power system further includes the 3rd control
Switch 10;
3rd control switch 10 is arranged between inverter 4 and city's power supply network 6, and is electrically connected with control unit 13, by
Control unit 13 controls its switch or is closed, and when the 3rd control switch 10 is closed, the electric energy that solar panel 1 generates is city
Power supply network 6 is powered.
As a kind of embodiment of the utility model, in the present embodiment, solar power system further includes energy-storage module
7th, the 4th control switch 11 and the 5th control switch 12;
Energy-storage module 7 is electrically connected respectively with the output terminal of inverter 4 and load 5, and usually, energy-storage module 7 is electric power storage
Pond;
4th control switch 11 is arranged between energy-storage module 7 and inverter 4, and is electrically connected with control unit 13, by
Control unit 13 controls it to switch or be closed, when the 4th control switch 11 is closed, the power storage of the generation of solar panel 1
Into energy-storage module 7;
5th control switch 12 is arranged between energy-storage module 7 and load 5, and is electrically connected with control unit 13, by controlling
Unit 13 processed controls its switch or is closed, and when the 5th control, which switchs 12, to be closed, energy-storage module 7 is 5 power supply of load, the generally same day
When gas badly causes solar energy deficiency or city's power supply network 6 when something goes wrong, be closed the 5th control switch 12.
It should be noted that the open or close of 8 to the 5th control switch 12 of the first control switch is by control unit 13
Coordinate control.
As a kind of embodiment of the utility model, in the present embodiment, solar power system further includes monitor terminal
14;
Monitor terminal 14 is electrically connected with DC converter 3, for monitoring the generated energy of DC converter 3 in real time.
As a kind of embodiment of the utility model, in the present embodiment, it is between monitor terminal 14 and DC converter 3
Two-way communication.
As a kind of embodiment of the utility model, in the present embodiment, between monitor terminal 14 and DC converter 3
Two-way communication is wireless communication or wire communication.
As a kind of embodiment of the utility model, in the present embodiment, N blocks solar panel 1 be in square array or
Circle array distribution.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among the protection domain that variation is created still in the utility model.