CN108695886A - A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation - Google Patents
A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation Download PDFInfo
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- CN108695886A CN108695886A CN201810502373.7A CN201810502373A CN108695886A CN 108695886 A CN108695886 A CN 108695886A CN 201810502373 A CN201810502373 A CN 201810502373A CN 108695886 A CN108695886 A CN 108695886A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses the grid-connected inverting system of a kind of fuel cell and solar cell mixed power generation, including fuel cell, solar cell, input switch, grid-connected inverting system major loop, load, utility grid, parallel network reverse control system and simultaneously machine communication interface;The fuel cell, solar cell is connect with input switch respectively, the input switch is connect with grid-connected inverting system major loop, the grid-connected inverting system major loop is connect with load and utility grid respectively, the parallel network reverse control system respectively with input switch, grid-connected inverting system major loop is connected with simultaneously machine communication interface, the present invention can overcome solar power generation intermittent, the problem of randomness, there is this system solar cell maximal power tracing to control MPPT, fuel cell maximal efficiency is run, no industrial frequency transformer, prevent island effect, reversals have higher efficiency and safety, and reasonable design, it is simple in structure, generating efficiency is high, total harmonic distortion factor is low, application prospect is wider.
Description
Technical field
The present invention relates to the grid-connected inverting systems of a kind of fuel cell and solar energy mixed power generation, belong to new energy fuel electricity
Pond generates electricity and solar energy generation technology field.
Background technology
Solar energy is a kind of ideal clean energy resource, in recent years since people are to the growing interest of environmental problem, too
It is positive can application with it is universal, be increasingly valued by people, application field is also more and more extensive.According to statistics, China have 2/3 with
The sunshine-duration of upper national territorial area, solar energy annual radiant all quality was in 5,020,000 kJ/m at 2200 hours or more2More than, it is solar energy
Utilization provide abundant resource and advantage.According to the characteristics of solar energy and actual needs, solar power generation point at present
For photo-thermal power generation and photovoltaic generation, the solar power generation usually said refers to solar energy power generating, is the light using semiconductor
Luminous energy is directly translated into a kind of generation technology of electric energy by raw volta effect.Although solar energy and wind energy are as current new energy point
The main power generation source of cloth still meets grid-connected conditions since solar power generation needs enough intensities of illumination that could generate
Voltage, wind-power electricity generation, which also needs certain wind speed, can drive the blade of wind-driven generator to rotate, to produce electricl energy.Cause
This, solar energy and wind-power electricity generation all have the shortcomings that intermittent and randomness, and larger impact is often caused to power grid.
However, Hydrogen Energy causes global note that being with hydrogen mainly as a kind of reproducible cleaning secondary energy sources
Main fuel cell is the chemical devices that a kind of chemical energy by fuel is converted into electric energy, is thermal power generation, waterpower hair
5th generation generation technology of electricity, nuclear energy power generation and solar wind-energy power generation.
Therefore, fuel cell and solar cell hybrid power system can not only solve solar power generation it is intermittent and with
The defect of machine, moreover, high with storage density, service life is long, the features such as pollution, special is answered especially suitable for some
The electricity consumption lived with field and the outlying areas without electricity people's livelihood.
Invention content
The purpose of the present invention is to provide the grid-connected inverting system of a kind of fuel cell and solar cell mixed power generation, it
Suitable for new energy source fuel cell power generation and solar cell hybrid power system.For existing solar power generation grid-connecting contravariant system
Solar cell has intermittent and stochastic problems, the fuel cell and solar cell mixed power generation of proposition grid-connected inverse in system
Change system can overcome the intermittence and randomness defect of solar cell power generation, in the situation that night or intensity of illumination are relatively low
Under, solar cell stopping sends out electric energy or to send out electric energy relatively low, and it is that power grid supplies that fuel cell, which continual can send out electricity,
Electricity reduces grid-connected inverting system and contributes and lower suddenly, reduces power grid burden.Moreover, the system has solar cell maximum work
Rate tracing control MPPT, the operation of fuel cell maximal efficiency, no industrial frequency transformer, island effect, reversals is prevented to have more
High efficiency and safety, and meet standard GB/T/T 33593-2017"The requirement of distributed generation resource interconnection technology", have simultaneously
Have the advantages that reasonable design, simple in structure, generating efficiency is high, total harmonic distortion factor is low, high safety and reliability.
Technical scheme is as follows:A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation,
Including fuel cell, solar cell, input switch, grid-connected inverting system major loop, load, utility grid, parallel network reverse control
System processed and and machine communication interface;
The fuel cell, solar cell are connect with input switch respectively, the input switch and grid-connected inverting system
Major loop connects, and the grid-connected inverting system major loop is connect with load and utility grid respectively, parallel network reverse control system
System respectively with input switch, grid-connected inverting system major loop and simultaneously machine communication interface is connect.
The input switch includes inputting protection switch I and input protection switch II, and switch I and input are protected in the input
The input terminal of protection switch II is connect with the output end of the output end of fuel cell, solar cell respectively, the input protection
It is connect again with grid-connected inverting system major loop after the output end connection of switch I and input protection switch II;
The grid-connected inverting system major loop includes DC voltage booster circuit, half-bridge inversion circuit, grid-connected switch, load switch
I, load switch II;
It is inputted in the input switch and protects the output end of switch I and input protection switch II electric with DC boosting after connecting
The input terminal on road connects, and the output end of the DC voltage booster circuit is separately connected the input terminal and semi-bridge inversion electricity of load switch I
The input terminal on road, the output end of the half-bridge inversion circuit are separately connected the input of the input terminal and grid-connected switch of load switch II
End;
The load includes local DC load and local AC load;
The output end of the input terminal connection load switch I of the local DC load, the input of the local AC load
The output end of end connection load switch II;
The input terminal of the utility grid connects the output end of grid-connected switch;
The parallel network reverse control system includes controller, driving circuit, sample circuit, fuel, solar array voltage
Detection circuit, fuel, solar cell current detection circuit, fuel, solar cell temperature sensing circuit, DC voltage booster circuit
Voltage detecting circuit, inversion, load and utility grid voltage detecting circuit, inversion, load and utility grid current detection circuit,
Inversion, load and utility grid phase detecting circuit, inversion, load and utility grid frequency detection circuit;The sample circuit
Input/output terminal connection controller input/output terminal, the input terminal of the driving circuit connects controller output end, described
The output end of driving circuit is separately connected input switch, grid-connected inverting system major loop, the fuel, solar array voltage inspection
Slowdown monitoring circuit, fuel, solar cell current detection circuit, fuel, solar cell temperature sensing circuit, DC voltage booster circuit electricity
Detection circuit is pressed, it is inversion, load and utility grid voltage detecting circuit, inversion, load and utility grid current detection circuit, inverse
Become, load and utility grid phase detecting circuit, inversion, load and utility grid frequency detection circuit output end respectively with adopt
The input terminal of sample circuit connects.
The input/output terminal of described and machine communication interface input/output terminal connection controller.
The fuel cell and solar cell are connected to by input protection switch and input protection switch grid-connected inverse respectively
Become main loop.The grid-connected inverting system major loop is made of two-stage type inverter structure, and prime is DC/DC DC boosting electricity
Road, rear class are DC/AC half-bridge inversion circuits.The local DC load and local AC load are connected to DC/DC direct currents
The output end of booster circuit and DC/AC half-bridge inversion circuits provides required electric energy for local DC load and local AC load.
The controller includes advanced digital processing DSP (TMS320LF24x) chip, and the driving circuit includes that can compile
Journey logic CPLD chips, an input/output terminal of the controller by and machine communication interface be connected to host computer PC or other
The grid-connected inverting system of parallel running realizes that multimachine coordinates control, voltage, the Current calculation of the controller fuel cell
The output power of fuel cell, and data are uploaded to host computer PC by simultaneously machine communication interface, adjust fuel for staff
The fuel of battery is supplied, and is made fuel cell operation in pressure point of maximum efficiency, is saved fuel;The controller is according to solar cell
The maximum output power point of voltage, Current calculation solar cell, and the drive signal duty of DC voltage booster circuit is adjusted accordingly
Than implementing maximal power tracing control (MPPT);The controller is implemented grid-connected and two kinds of operational mode controls of isolated network and its is put down
Sliding cutting changes, and according to the positive and negative direct current voltage of DC voltage booster circuit, half-bridge inversion circuit, utility grid and the electricity locally loaded
The parameters such as stream, voltage, frequency, phase, power, the high frequency sinusoidal pulse width for determining output to half-bridge inversion circuit are modulated
(SPWM) signal is controlled.
The method of operation that there are mainly two types of fuel cell and solar cell hybrid power systems of the present invention, first,
When sunshine abundance, solar cell is generated electricity with maximum power point, and since power load on daytime is lighter, it is logical that solar energy sends out electric energy
It crosses grid-connected inverting system and flows to power grid;Second, when night or cloudy day without sunshine, using fuel cell operation in maximum
Efficient point electricity generation grid-connecting.
Beneficial effects of the present invention are as follows:
(1) present invention provides electricity by the grid-connected inverting system of fuel cell and solar cell mixed power generation for power grid
Can, solar cell, which can be worked normally, when illumination abundance powers in maximum power point for power grid.Night, intensity of illumination
When relatively low, solar cell cannot normally send out electric energy, and fuel cell can then start to devote oneself to work, lasting for power grid
Power supply.
(2) present invention can reduce because solar cell contribute reduce due to causes network voltage to reduce, realize solar energy and
The mixing of fuel electric energy utilizes, and improves the efficiency of system, and enhance the stability of power grid.
(3) present invention compares existing solar cell grid-connected system, using two-stage type inversion system, effective isolation electricity
Net and fuel cell and solar cell, and effectively make up that solar cell is intermittent, defect of randomness, make the power generation be
System efficiency further increases, and stability further enhances.
Description of the drawings
Fig. 1 is the structure chart of fuel cell of the present invention and solar cell mixed power generation grid-connected inverting system;
Fig. 2 is the connection relation of fuel cell of the present invention and solar cell mixed power generation grid-connected inverting system major loop
Figure;
In figure respectively marked as:1- fuel cells, 2- solar cells, 3- input switches, 31- protections switch I, 32- inputs
The grid-connected switch of protection switch II, 4- grid-connected inverting systems major loop, 41- DC voltage booster circuits, 42- half-bridge inversion circuits, 43-,
44- load switches I, 45- load switches II, 5- loads, the locals 51- DC load, the locals 52- AC load, 6- utility grids,
7- parallel network reverses control system, 701- controllers, 702- driving circuits, 703- sample circuits, 704- fuel, solar cell electricity
Press detection circuit, 705- fuel, solar cell current detection circuit, 706- fuel, solar cell temperature sensing circuit,
707- DC voltage booster circuits voltage detecting circuit, 708- inversions, load and utility grid voltage detecting circuit, are born 709- inversions
Carry and utility grid current detection circuit, 710- inversions, load and utility grid phase detecting circuit, 711- inversions, load and
Utility grid frequency detection circuit, 8- and machine communication interface,
Specific implementation mode
Below in conjunction with attached drawing, the invention will be further described.
Embodiment 1:As shown in Figure 1:A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation, including
Fuel cell 1, solar cell 2, input switch 3, grid-connected inverting system major loop 4, load 5, utility grid 6, parallel network reverse
Control system 7 and and machine communication interface 8;
The fuel cell 1, solar cell 2 are connect with input switch 3 respectively, the input switch 3 and parallel network reverse
Main loop 4 connects, and the grid-connected inverting system major loop 4 is connect with load 5 and utility grid 6 respectively, described grid-connected inverse
Become control system 7 respectively with input switch 3, grid-connected inverting system major loop 4 and simultaneously machine communication interface 8 is connect.
The input switch 3 includes input protection switch I 31 and input protection switch II 32, and switch I is protected in the input
31 and input protection switch II 32 input terminal connect respectively with the output end of the output end of fuel cell 1, solar cell 2,
Connect again with grid-connected inverting system major loop 4 after the output end connection of the input protection switch I 31 and input protection switch II 32
It connects;
The grid-connected inverting system major loop 4 include DC voltage booster circuit 41, half-bridge inversion circuit 42, grid-connected switch 43,
Load switch I 44, load switch II 45;
In the input switch 3 input protection switch I 31 and input protect switch II 32 output end connect after with direct current
The input terminal of booster circuit 41 connects, and the output end of the DC voltage booster circuit 41 is separately connected the input terminal of load switch I 44
With the input terminal of half-bridge inversion circuit 42, the output end of the half-bridge inversion circuit 42 is separately connected the input of load switch II 45
The input terminal at end and grid-connected switch 43;
The load 5 includes local DC load 51 and local AC load 52;
The output end of the input terminal connection load switch I 44 of the local DC load 51, the local AC load 52
Input terminal connection load switch II 45 output end;
The input terminal of the utility grid 6 connects the output end of grid-connected switch 43;
The parallel network reverse control system 7 includes controller 701, driving circuit 702, sample circuit 703, fuel, the sun
It can battery voltage detection circuit 704, fuel, solar cell current detection circuit 705, fuel, solar cell temperature detection
Circuit 706, DC voltage booster circuit voltage detecting circuit 707, inversion, load and utility grid voltage detecting circuit 708, inversion,
Load and utility grid current detection circuit 709, inversion, load and utility grid phase detecting circuit 710, inversion, load and
Utility grid frequency detection circuit 711;The input/output terminal of the input/output terminal connection controller 701 of the sample circuit 703,
The input terminal of the driving circuit 702 connects 701 output end of controller, and the output end of the driving circuit 702 is separately connected defeated
Enter switch 3, grid-connected inverting system major loop 4;The fuel, solar array voltage detection circuit 704, fuel, solar-electricity
Pond current detection circuit 705, fuel, solar cell temperature sensing circuit 706, DC voltage booster circuit voltage detecting circuit 707,
Inversion, load and utility grid voltage detecting circuit 708, inversion, load and utility grid current detection circuit 709, are born inversion
Carry and utility grid phase detecting circuit 710, inversion, load and utility grid frequency detection circuit 711 output end respectively with
The input terminal of sample circuit 703 connects.
The input/output terminal of described and machine communication interface 8 input/output terminal connection controller 701.
The fuel cell 1 and solar cell 2 are connected by input protection switch I 31 and input protection switch II 32 respectively
To grid-connected inverting system major loop 4.The grid-connected inverting system major loop 4 is made of two-stage type inverter structure, prime DC/DC
DC voltage booster circuit 41, rear class are DC/AC half-bridge inversion circuits 42.The local DC load 51 and local AC load 52 are divided
It is not connected to the output end of DC/DC DC voltage booster circuits 41 and DC/AC half-bridge inversion circuits 42, for local DC load 51 and this
Ground AC load 52 provides required electric energy.
The controller 701 includes advanced digital processing DSP (TMS320LF24x) chip, and the driving circuit 702 wraps
Programmable logic CPLD chips are included, an input/output terminal of the controller 701 is connected to host computer by simultaneously machine communication interface 8
PC or the grid-connected inverting system of other parallel runnings realize that multimachine coordinates control, 701 fuel cell 1 of the controller
Voltage, Current calculation fuel cell 1 output power, and by data by and machine communication interface 8 be uploaded to host computer PC, supply
Staff adjusts the fuel supply of fuel cell 1, so that fuel cell 1 is operated in pressure point of maximum efficiency, saves fuel;The control
Device 701 adjusts direct current accordingly according to the voltage of solar cell 2, the maximum output power point of Current calculation solar cell 2
The drive signal duty cycle of booster circuit implements maximal power tracing control (MPPT);The controller 701 is implemented grid-connected and lonely
Two kinds of operational modes of net are controlled and its are taken over seamlessly, and according to the positive and negative direct current voltage of DC voltage booster circuit 41, semi-bridge inversion electricity
The parameters such as electric current, voltage, frequency, phase, the power on road 42, utility grid 6 and local load 5 determine output to semi-bridge inversion
The high frequency sinusoidal pulse width modulation (SPWM) of circuit 42 controls signal.
As shown in Fig. 2, the present invention is carried by fuel cell and solar cell mixed power generation grid-connected inverting system for power grid
For electric energy, solar cell 2, which can be worked normally, when illumination abundance powers in maximum power point for power grid.Night, light
When relatively low according to intensity, solar cell 2 cannot normally send out electric energy, and fuel cell 1 can then start to devote oneself to work, and continue
It is power grid power supply.For power grid, it is possible to reduce cause network voltage to reduce due to solar cell is contributed and reduced, realize the sun
It can be utilized with the mixing of fuel electric energy, improve the efficiency of system, and enhance the stability of power grid.Simultaneously compared to existing solar cell
Net system, it is effective that power grid and fuel cell and solar cell is isolated using two-stage type inversion system, and effectively make up
Solar cell intermittence, the defect of randomness, make electricity generation system efficiency further increase, stability further enhances.
MPPT maximum power point tracking control in the fuel cell of the present invention and the grid-connected inverting system of solar cell mixed power generation
Using can adapt to the fast-changing admittance Incremental control of intensity of illumination, program is easy in parallel network reverse control system algorithm processed
It is realized in 7, and incremental conductance method, without the concern for the characteristic and parameter of solar cell module, voltage fluctuation is smaller, has
Higher control accuracy.Incremental conductance method operation principle is:By solar cell power vs. voltage curve P-V curves it is found that too
It is positive to have at battery maximum power pointAnd when solar cell working point has on the left side of maximum power point
When solar cell working point has on the right of maximum power pointThus judge solar cell output power and output
Derivative relation realizes maximum power point tracking between voltage.Have for solar cell output power:P=I*V, both sides are simultaneously
To V derivations as, and I is regarded to the function of V, then hadWhen output voltage is maximum power point voltage,
V=Vm,When output voltage is more than maximum power point voltage, V > Vm,When output voltage is less than maximum work
When rate point voltage, V < Vm,It can then release:When output voltage is maximum power point voltage, V=Vm,When output voltage is more than maximum power point voltage, V > Vm,When output voltage is less than maximum power
When point voltage, V < Vm,
By the derivative of 2 output power of solar cell and output voltage, whether the condition for being zero changes the output of battery
Voltage, specific adjusting method are:The first step, sample circuit 703 detect electricity by fuel cell, solar array voltage in real time
Road 704 and fuel, solar cell current detection circuit 705 acquire the output voltage V (K) and output current I of solar cell 2
(K), controller 701 and the output voltage V (K-1) and output current I (K-1) of last time acquisition solar cell 2 are compared, and are asked
Go out output voltage difference dV=V (K)-V (K-1) and output current difference dI=I (K)-I (K-1);Second step, controller 701 are sentenced
It is disconnectedWithRelationship, if equal to relationship, then Uref=V (K), if less than relationship, then Uref=V (K)-Ustep, if big
In relationship, then Uref=V (K)+Ustep.Third walks, and obtains UrefAfterwards, adjustment solar cell working point voltage can reach most
The purpose of high-power point tracking MTTP.
Controller 701 passes through fuel, solar array voltage detection circuit 704, fuel, the sun according to sample circuit 703
Energy battery current detection circuit 705, fuel, solar cell temperature sensing circuit 706 collect fuel cell 1 and solar-electricity
The output voltage in pond 2, output current operating temperature, by judging whether parameters normally may determine that solar cell 2 is
No normal work, controller 701 export control signal and drive input protection switch 32 to driving circuit 702, allow solar cell 2
In access grid-connected inversion system major loop 4, and connect grid-connected switch 43, electricity generation grid-connecting.When judging that solar cell 2 is illuminated by the light by force
When degree influences to be unable to normal output, controller 701 exports control signal and disconnects input protection switch 32 to driving circuit 702, and
Input protection switch I 31 is connected, allows 1 access grid-connected inversion system major loop 4 of fuel cell, and connect grid-connected switch 43, power generation
It is grid-connected.Controller 701 collects the watt level of local DC load 51 and local AC load 52 by sample circuit 703,
Judge whether local DC load 51 and local AC load 52 are meeting in condition of power supply, if satisfied, the output control of controller 701
Signal processed connects load switch I 44, load switch II 45 to driving circuit 702;If being unsatisfactory for supply condition, disconnect corresponding
Load switch.
Controller 701 according to sample circuit 703 by inversion, load and utility grid voltage detecting circuit 708, inversion,
Load and utility grid current detection circuit 709, inversion, load and utility grid phase detecting circuit 710, inversion, load and
The sampled data of utility grid frequency detection circuit 711, judge utility grid 6 voltage, electric current, phase and frequency parameter whether
In normal range (NR), if in normal range (NR), exports control signal and connects grid-connected switch 43 through switch driving circuit 702,
And half-bridge inversion circuit 42 is made to work in PQ control models;If not in normal range (NR), exports control signal and driven through switch
Dynamic circuit 702 disconnects grid-connected switch 43, and half-bridge inversion circuit 42 is made to work in V/f control models, half-bridge inversion circuit 43 with
Isolated power grid pattern is that local AC load 52 provides electric energy.
Specific embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned realities
Example is applied, it within the knowledge of a person skilled in the art, can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (3)
1. the grid-connected inverting system of a kind of fuel cell and solar cell mixed power generation, which is characterized in that including fuel cell
(1), solar cell (2), input switch (3), grid-connected inverting system major loop (4), load (5), utility grid (6), grid-connected
Inverse control system (7) and and machine communication interface (8);
The fuel cell (1), solar cell (2) are connect with input switch (3) respectively, the input switch (3) with it is grid-connected
Inversion system major loop (4) connects, and the grid-connected inverting system major loop (4) connects with load (5) and utility grid (6) respectively
Connect, the parallel network reverse control system (7) respectively with input switch (3), grid-connected inverting system major loop (4) and and machine communicate and connect
Mouth (8) connection.
2. the grid-connected inverting system of fuel cell according to claim 1 and solar cell mixed power generation, feature exist
In:The input switch (3) includes input protection switch I (31) and input protection switch II (32), and switch I is protected in the input
(31) and input protection switch II (32) the input terminal output with the output end of fuel cell (1), solar cell (2) respectively
End connection, it is described input protection switch I (31) and input protect switch II (32) output end connect after again with grid-connected inverting
Major loop (4) of uniting connects;
The grid-connected inverting system major loop (4) includes DC voltage booster circuit (41), half-bridge inversion circuit (42), grid-connected switch
(43), load switch I (44), load switch II (45);
It is inputted in the input switch (3) after the output end connection of protection switch I (31) and input protection switch II (32) and straight
The input terminal connection of booster circuit (41) is flowed, the output end of the DC voltage booster circuit (41) is separately connected load switch I (44)
Input terminal and half-bridge inversion circuit (42) input terminal, the output end of the half-bridge inversion circuit (42) is separately connected load and opens
Close the input terminal of the input terminal and grid-connected switch (43) of II (45);
The load (5) includes local DC load (51) and local AC load (52);
The output end of the input terminal connection load switch I (44) of the local DC load (51), the local AC load
(52) output end of input terminal connection load switch II (45);
The output end of the grid-connected switch (43) of input terminal connection of the utility grid (6);
The parallel network reverse control system (7) include controller (701), driving circuit (702), sample circuit (703), fuel,
Solar array voltage detection circuit (704), fuel, solar cell current detection circuit (705), fuel, solar cell
Temperature sensing circuit (706), DC voltage booster circuit voltage detecting circuit (707), inversion, load and utility grid voltage detecting electricity
Road (708), inversion, load and utility grid current detection circuit (709), inversion, load and utility grid phase detecting circuit
(710), inversion, load and utility grid frequency detection circuit (711);The input/output terminal of the sample circuit (703) connects
The input terminal of the input/output terminal of controller (701), the driving circuit (702) connects controller (701) output end, the drive
The output end of dynamic circuit (702) is separately connected input switch (3), grid-connected inverting system major loop (4), the fuel, solar energy
Battery voltage detection circuit (704), fuel, solar cell current detection circuit (705), fuel, the inspection of solar cell temperature
Slowdown monitoring circuit (706), DC voltage booster circuit voltage detecting circuit (707), inversion, load and utility grid voltage detecting circuit
(708), inversion, load and utility grid current detection circuit (709), inversion, load and utility grid phase detecting circuit
(710), the output end of inversion, load and utility grid frequency detection circuit (711) input terminal with sample circuit (703) respectively
Connection.
The input/output terminal of described and machine communication interface (8) input/output terminal connection controller (701).
3. the grid-connected inverting system of fuel cell according to claim 1 and solar cell mixed power generation, feature exist
In:The controller (701) includes digital processing dsp chip, and the driving circuit (702) includes programmable logic CPLD cores
Piece.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474010A (en) * | 2018-11-15 | 2019-03-15 | 中广核研究院有限公司 | A kind of grid type micro-grid system recycled with Hydrogen Energy and its control method |
| CN109599935A (en) * | 2018-12-28 | 2019-04-09 | 佛山索弗克氢能源有限公司 | Light hydrogen energy-storage power supplying apparatus and its method of supplying power to |
| CN113098060A (en) * | 2021-04-08 | 2021-07-09 | 河北工业大学 | Intelligent controllable power switch for new energy grid connection |
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