CN105207246A

CN105207246A - Solar energy power generation system

Info

Publication number: CN105207246A
Application number: CN201410271088.0A
Authority: CN
Inventors: 林法正; 吕光钦; 李轩宇
Original assignee: National Central University
Current assignee: National Central University
Priority date: 2014-06-17
Filing date: 2014-06-17
Publication date: 2015-12-30

Abstract

The present invention discloses a solar energy power generation system which is formed by a solar energy power generation module, a capacitor, a DC to AC voltage converter, a filter, a relay, a PWM pulse width modulation controller, an operational module, a control module and a grid, wherein the control module tracks the power maximum value of the solar energy power generation module and detects whether the grid is abnormal or not, finally the PWM pulse width modulation controller is used to control the DC to AC voltage converter, the output direct current of the solar energy power generation module is converted into alternating current, and the alternating current is outputted to the gird.

Description

Solar energy electricity generation system

Technical field

The invention relates to a kind of electricity generation system, relate to a kind of solar energy electricity generation system especially.

Background technology

For the trend in response to carbon reduction, green energy resource industry is actively promoted in the whole world, and because global warming subject under discussion has solution not yet, add that fossil energy accelerates shortage in recent years, the renewable energy resources develop into one of emphasis of current each side active research, wherein, the renewable energy resources are comparatively general with application with the correlative study of solar energy generating again.

Grid type solar energy electricity generation system classification is domestic type and commercial style, both differences are that required power is different, and the problem that electricity generation system more often occurs is for occurring that electric power disturbs, such as: thunderbolt, natural disaster or the foreign object of salt damage class touch, electricity generation system instability is caused to cause the voltage collapse of electrical network, thus electricity generation system overall failure is made, cause the inconvenience of client, if client is large-scale production line, its electricity generation system fault will affect stopping of production line, cause client heavy losses, in order to solve the impact that voltage collapse causes, the regulation that a low-voltage penetrates is stipulated in the grid codes of various countries, namely when there is voltage collapse, generating end can provide certain fictitious power until power system restoration is normal to electrical network, and do not cause the loss of greatest energy output because voltage collapse makes generating end and electrical network cut off.

The electricity generation system of general application is during generating electricity at present, electric power is delivered to electrical network by the mode through two benches voltage transitions, meaning is about to generating end and first carries out first stage boosting through the electric pressure converter of DC-DC, then, direct voltage after being boosted first stage again inputs to the electric pressure converter that direct current delivers stream and carries out second stage boosting, but, carry out two benches boosting and not only consume energy, increase volume and the cost of overall electricity generation system simultaneously because of the increase of electric pressure converter quantity.

In view of this, the present invention wishes to propose a kind of new solution.

Summary of the invention

In order to solve the problem described in prior art, main purpose of the present invention is to provide a kind of solar energy electricity generation system, comprising: a solar energy power generation module group, has an output, it receives a solar energy and solar energy is converted to a direct voltage, and produces a direct current, one electric capacity, the output of itself and solar energy power generation module group is connected in parallel, and exports after receiving direct voltage, one direct current is to AC adaptor, and have a first input end, one second input and an output, first input end is electrically connected in parallel in electric capacity, direct voltage is converted to an alternating voltage, and produces an alternating current, one filter, has an input and an output, and input is electrically connected at the output of direct current to AC adaptor, in order to the noise of filtering alternating voltage and alternating current, one relay, have an input and an output, input is electrically connected at the output of filter, one electrical network, have an input and an output, input is electrically connected at the output of relay, one controls module, and have a first input end, one second input and an output, first input end is electrically connected at the output of solar energy power generation module group, and the second input is electrically connected at the output of filter, one computing module, has a first input end, one second output and an output, and first input end is electrically connected at the output controlling module, and the second input is electrically connected at the output of filter, and a pwm pulse width modulation controller, have an input and an output, input is electrically connected at the output of computing module, and output is electrically connected at second input of direct current to AC adaptor, wherein, the first input end controlling module is received from direct voltage and the direct current of solar energy power generation module group output, control module follow the trail of a power maximum of solar energy power generation module group by direct voltage and direct current and calculate a maximum power point voltage, the alternating current that the output controlling the second input receiving filter of module exports and alternating voltage and direct current are to a rated current of AC adaptor, control the voltage phase angle that alternating voltage that module exports by filter and alternating current calculate one first real power that direct current exports AC adaptor and one first fictitious power and electrical network, and control alternating voltage that module exports by filter and direct current calculates one second real power and one second fictitious power of electrical network to the rated current of AC adaptor, wherein, when electrical network occurs abnormal, control module and export an output signal, and after comparing the first real power and the second real power, export one select signal, control module and export the first input end of a command current to computing module according to selection signal and output signal, the alternating current that the output that the first input end of computing module and the second input receive command current and filter respectively exports, an error between union alternating current and command current and compensating error, and export a command voltage to pwm pulse width modulation controller, pwm pulse width modulation controller exports a pwm pulse width modulated according to command voltage and controls signal, the direct voltage of pwm pulse width modulated control signal control inputs electric capacity reaches maximum power point voltage and control direct current reaches the electric current needed for electrical network to the alternating current that AC adaptor exports, and wherein, direct current is one to the number of AC adaptor.

Described solar energy electricity generation system, wherein controls module and comprises: a maximum power tracing unit, after it receives direct voltage and direct current, follow the trail of the power maximum of solar energy power generation module group and calculate maximum power point voltage; One first adder-subtracter, there is a first input end, one second input and an output, first input end receives the maximum power point voltage that maximum power tracing unit exports, second input receives the direct voltage that solar energy power generation module group exports, first adder-subtracter receives maximum power point voltage and direct voltage calculates one first error amount, and output exports the first error amount; One PLL device, the voltage of the output output of its receiving filter and electric current, calculate the voltage phase angle of the first real power, the first fictitious power and electrical network; One low-voltage penetrates control device, the voltage that it receives the first real power, filter exports and direct current are to the rated current of AC adaptor, calculate the second real power and second fictitious power of electrical network, and when electrical network occurs abnormal, export output signal, and after comparing the first real power and the second real power, export and select signal; One second adder-subtracter, there is a first input end, one second input and an output, first input end receives the second real power, second input receives the first real power, after second adder-subtracter receives the second real power and the first real power, calculate one second error amount, output exports the second error amount; One first switch, one termination receives the first error amount, and the other end receives the second error amount, and the first switch selects the first error amount and the second error amount according to selection signal, and one of them exports; One second switch, its one end is a zero energy, and the other end receives the second fictitious power that low-voltage penetrates control device output, and selects zero energy and the output wherein of the second fictitious power according to output signal; One the 3rd adder-subtracter, there is a first input end, one second input and an output, its first input end receives the first fictitious power that PLL device exports, its second input receive second switch export zero energy and the second fictitious power one of them, 3rd adder-subtracter receive the first fictitious power and zero energy and the second fictitious power one of them, and calculating one the 3rd error amount, output exports the 3rd error amount; One Intelligent controller, receive the first error amount that the 3rd error amount and the first switch export and the second error amount one of them, carry out one of them compensating movement of the 3rd error amount and the first error amount and the second error amount, and export a quadrature axis current and a direct-axis current; One current protective device, receives quadrature axis current and direct-axis current, and restriction quadrature axis current and direct-axis current size of current, prevent electric current excessive too small with electric current; One coordinate transformation unit; after receiving the voltage phase angle of the electrical network that the quadrature axis current that exports through current protective device and direct-axis current and PLL device export; carry out the Coordinate Conversion between quadrature axis current, direct-axis current and voltage phase angle, and be converted to command current and export computing module to.

Described solar energy electricity generation system, wherein Intelligent controller is a class neural network, and class neural network comprises: an input unit, in order to receive the first error amount that the 3rd error amount and the first switch export and the second error amount one of them; One processing unit, receive the first error amount that the 3rd error amount that exported by input unit and the first switch export and the second error amount after one of them, and the first error amount and the second error amount that immediately the 3rd error amount and the first switch are exported one of them be converted to functional form, and compensate the first error amount of the 3rd error amount and the output of the first switch and the second error amount one of them; And an output unit, receive by processing unit export through function change with compensate after the 3rd error amount and the first error amount of exporting of the first switch and the second error amount one of them, and the 3rd error amount of functional form is resolved to direct-axis current, and by functional form first switch export the first error amount and the second error amount one of them resolve to quadrature axis current.

Described solar energy electricity generation system, wherein Intelligent controller is a fuzzy class neural network, and fuzzy class neural network comprises: an input unit, in order to receive the first error amount that the 3rd error amount and the first switch export and the second error amount one of them; One processing unit, receive the first error amount that the 3rd error amount that exported by input unit and the first switch export and the second error amount after one of them, and the first error amount immediately the 3rd error amount and the first switch exported and the second error amount wherein one be converted to functional form, and compensate the first error amount of the 3rd error amount and the output of the first switch and the second error amount one of them; And an output unit, receive by processing unit export through function change with compensate after the 3rd error amount and the first error amount of exporting of the first switch and the second error amount one of them, and the 3rd error amount of functional form is resolved to direct-axis current, and by functional form first switch export the first error amount and the second error amount one of them resolve to quadrature axis current.

Described solar energy electricity generation system, wherein electrical network be a single-phase electrical network and a three phase network one of them.

Described solar energy electricity generation system, the electric current that its median filter exports be a monophase current and a three-phase current one of them.

Described solar energy electricity generation system, the voltage that its median filter exports be a single-phase voltage and a three-phase voltage one of them.

Through above-mentioned known by solar energy electricity generation system of the present invention, whether exception can be there is in order to detect electrical network, and the maximum power point voltage of solar energy power generation module group is met with the direct voltage of pwm pulse width modulated control signal control connection direct current to the electric capacity of AC adaptor, to maintain solar energy power generation module group and direct current to the power-balance between AC adaptor, with control direct current electric current needed for electrical network maintained to the alternating current that AC adaptor exports, to prevent the voltage collapse of electrical network, and cause greatest energy output loss.

Accompanying drawing explanation

Fig. 1 is solar energy electricity generation system schematic diagram of the present invention;

Fig. 2 is the schematic diagram of the solar energy electricity generation system of the present invention one first embodiment;

Fig. 3 is the schematic internal view of the Intelligent controller of the solar energy electricity generation system of the present invention one first embodiment;

Fig. 4 is the schematic diagram of the solar energy electricity generation system of the present invention one second embodiment;

Fig. 5 is the schematic internal view of the Intelligent controller of the solar energy electricity generation system of the present invention one second embodiment.

description of reference numerals

1,10,100 solar energy electricity generation systems

11,101,1001 solar energy power generation module group

12,102,1002 direct currents are to AC adaptor

13,1003 filters

103 pi type filters

14,104,1004 relays

15 electrical networks

105 single-phase electrical networks

1005 three phase networks

16,106,1006PWM Pwm controller

17,107,1007 computing modules

18,108,1008 module is controlled

1081,10081 maximum power tracing unit

1082,10082 coordinate transformation units

1083,10083 current protective devices

1084,10084 Intelligent controllers

1085,10085 PLL devices

1086,10086 low-voltages penetrate control device

10841,100841 input units

10842,100842 processing units

10843,100843 output units

A first adder-subtracter

B second adder-subtracter

C the 3rd adder-subtracter

SW1 first switch

SW2 second switch

P first real power

P* second real power

Q first fictitious power

Q* second fictitious power

Vpv direct voltage

Ipv direct current

V alternating voltage

V1 single-phase voltage

Va, Vb, Vc three-phase voltage

I alternating current

I1 monophase current

Ia, Ib, Ic three-phase current

I*, I1*, Ia*, Ib*, Ic* command current

Vcon, Vcon1, Vcona, Vconb, Vconc command voltage

Imax rated current

Cdc, C1, C2 electric capacity

L, L1, L2, La, Lb, Lc inductance

θ e voltage phase angle.

Specific embodiment

The present invention discloses a kind of solar energy electricity generation system, wherein utilized solar energy generation mode, usually knows that the knowledgeable can understand for correlative technology field has, therefore with explanation hereinafter, no longer does complete description.Meanwhile, with hereinafter contrasted accompanying drawing, be that the expression structure relevant with feature of the present invention and function are illustrated, also do not need according to the complete drafting of actual size, conjunction is first chatted bright.

First, referring to Fig. 1, is solar energy electricity generation system schematic diagram of the present invention.

As shown in Figure 1, solar energy electricity generation system 1 of the present invention comprises solar energy power generation module group 11, electric capacity Cdc, a direct current to AC adaptor 12, filter 13, relay 14, electrical network 15, pwm pulse width modulated (PulseWidthModulation, PWM) controller 16, computing module 17 and controls module 18, and relay 14 can be a kind of solid-state relay (SolidStateRelay, SSR), electrical network 15 is a single-phase electrical network or a three phase network, single-phase electrical network is usually used in domestic type electrical network, its power specification is such as: 220V/60Hz, power is about 3kW ~ 5kW, do not limit at this, and three phase network is usually used in commercial style or industrial electrical network, its power specification is such as: 220V/60Hz, power is about 10kW, do not limit at this, and direct current is that a kind of direct current of alternating voltage that turned by direct voltage is to AC adaptor to AC adaptor 12, when electrical network is single-phase electrical network, direct current is a full-bridge inverter (FullBridgeInverter) to AC adaptor 12, if when electrical network is three phase network, direct current is a three-phase inverter (ThreePhaseInverter) to AC adaptor 12.The solar energy power generation module group 11 that solar energy electricity generation system 1 of the present invention comprises, electric capacity Cdc, direct current are to AC adaptor 12, filter 13, relay 14, electrical network 15, pwm pulse width modulated (PulseWidthModulation; Pwm pulse width modulated) controller 16, computing module 17 and control the annexation of module 18 and be described below.

Then, please continue to refer to Fig. 1, at this, solar energy power generation module group 11 has an output, and it receives outside sunlight (not shown), and outside sunlight is converted to a direct voltage Vpv, and produces a direct current electric current I pv; Electric capacity Cdc and solar energy power generation module group 11 are connected in parallel, and in order to the direct voltage Vpv of stable solar energy power generation module group 11, export direct current to AC adaptor 12 after receiving direct voltage Vpv, direct current Ipv; Direct current has a first input end, one second input and an output to AC adaptor 12, first input end is electrically connected at electric capacity Cdc, after receiving the direct voltage Vpv of electric capacity Cdc output, direct voltage Vpv is converted to alternating voltage V, and exports after producing an alternating current I; Filter 13, there is an input and an output, input is electrically connected at the output of direct current to AC adaptor 12, after receiving the alternating voltage V and alternating current I that direct current exports AC adaptor 12, in order to the noise (noise) of filtering alternating voltage V and alternating current I, avoid because of the excessive interference voltage of noise and current signal, and then affect overall electricity generation system power generating quality; Relay 14 has an input and an output, and its input is electrically connected at the output of filter 13; Electrical network 15, have an input and an output, its input is electrically connected at the output of relay 14; Control module 18 and have a first input end, one second input and an output, first input end is electrically connected at the output of solar energy power generation module group 11, and the second input is electrically connected at the output of filter 13; Computing module 17 has a first input end, one second output and an output, and first input end is electrically connected at the output controlling module 18, and the second input is electrically connected at the output of filter 13; Pwm pulse width modulation controller 16 has an input and an output, and input is electrically connected at the output of computing module 17, and output is electrically connected at second input of direct current to AC adaptor 12.

Then, please continue to refer to Fig. 1, when the first input end controlling module 18 is received from direct voltage Vpv and the direct current Ipv of solar energy power generation module group 11 output, controls module 18 and utilize increment conductance method (IncrementalConductanceMethod by direct voltage Vpv and direct current Ipv; InCon) follow the trail of a power maximum of solar energy power generation module group 11 and calculate a maximum power point voltage, namely meaning follows the trail of the maximum power point voltage of solar energy power generation module group 11 when power maximum, use and improve solar energy generating efficiency, in addition, the alternating current I that the output controlling the second input receiving filter 13 of module 18 exports and alternating voltage V and direct current are to a rated current Imax of AC adaptor 12, rated current Imax anticipates the lowest high-current value that the direct current that namely uses can bear AC adaptor 12, control the voltage phase angle that alternating voltage V that module 18 exports by filter 13 and alternating current I calculates one first real power that direct current exports AC adaptor 12 and one first fictitious power and electrical network 15, and control alternating voltage V that module 18 exports by filter 13 and direct current to the rated current Imax of AC adaptor 12 calculate electrical network 15 actual one second real power that receives and one second fictitious power, detect electrical network 15 when control module 18 to occur namely to export an output signal extremely, and export one after comparing the first real power and the second real power and select signal, control module 18 and export the first input end of a command current I* to computing module 17 according to selection signal and output signal, the alternating current I that the output that the first input end of computing module 17 and the second input receive command current I* and filter 13 respectively exports, error between union command current I* and alternating current I and after compensating, export a command voltage Vcon to pwm pulse width modulation controller 16, pwm pulse width modulation controller 16 exports a pwm pulse width modulated and controls maximum power point voltage that signal reaches solar energy power generation module group 11 with the direct voltage Vpv of control inputs electric capacity Cdc and control direct current and maintain electric current needed for electrical network 15 to the alternating current I that AC adaptor 12 exports, in this embodiment, immediately detect electrical network by control module 18 and whether exception occurs, and the instant direct voltage Vpv controlling alternating current I that direct current exports AC adaptor 12 and electric capacity Cdc, can prevent from causing greatest energy output loss because electrical network 15 is abnormal.It should be noted that in the present invention and only use an electric pressure converter, be i.e. one-phase voltage transitions, but not general used two benches voltage transitions, therefore solar energy electricity generation system 1 can significantly reduce costs and volume, increases the facility of usability.

Please refer to Fig. 2, is the schematic diagram of the solar energy electricity generation system of the present invention one first embodiment.

First, a solar energy electricity generation system 10, comprises a solar energy power generation module group 101, has an output, after it receives outside sunlight, is converted to a direct voltage Vpv, and produces a direct current electric current I pv, electric capacity Cdc, itself and solar energy power generation module group 101 are connected in parallel, and export after receiving direct voltage Vpv, one direct current is to AC adaptor 102, there is a first input end, one second input and an output, first input end is electrically connected at electric capacity Cdc, direct voltage Vpv is converted to a single-phase AC voltage V1, direct current is to the output output single-phase alternating voltage V1 of an AC adaptor 102 and single-phase alternating current I1, pi type filter 103, there is an input and an output, input is electrically connected at the output of direct current to AC adaptor 102, export after noise in order to filtering single-phase AC voltage V1 and single-phase alternating current I1, avoid because of the excessive interference voltage of noise and current signal, pi type filter 103 utilizes electric capacity C1, electric capacity C2, inductance L 1 and inductance L 2 formed, one first end of electric capacity C1 and a first end of inductance L 1 are electrically connected, one second end of electric capacity C1 and a first end of inductance L 2 are electrically connected, one second end of inductance L 1 and a first end of electric capacity C2 are electrically connected, one second end of inductance L 2 and one second end of electric capacity C2 are electrically connected, relay 104, have an input and an output, input is electrically connected at the output of pi type filter 103, one single-phase electrical network 105, have an input and an output, input is electrically connected at the output of relay 104, control module 108, have a first input end, one second input and an output, first input end is electrically connected at the output of solar energy power generation module group 101, and the second input is electrically connected at the output of pi type filter 103, computing module 107, has a first input end, one second output and an output, and first input end is electrically connected at the output controlling module 108, and the second input is electrically connected at the output of pi type filter 103, and pwm pulse width modulation controller 106, have an input and an output, input is electrically connected at the output of computing module 107, and output is electrically connected at second input of direct current to AC adaptor 102.

Please continue to refer to Fig. 2, control module 108 and comprise a maximum power tracing unit 1081, after the direct voltage Vpv that its reception solar energy power generation module group 101 exports and direct current Ipv, follow the trail of the power maximum of solar energy power generation module group 101 and calculate a maximum power point voltage Vpv*, namely meaning follows the trail of the maximum power point voltage Vpv* of solar energy power generation module group 101 when power maximum, uses and improves solar energy generating efficiency; One first adder-subtracter A, there is a first input end, one second input and an output, its first input end receives the maximum power point voltage Vpv* that maximum power tracing unit 1081 exports, its second input receives the direct voltage Vpv that solar energy power generation module group 101 exports, first adder-subtracter A calculates one first error amount by maximum power point voltage Vpv* and direct voltage Vpv, and exports the first error amount by output; One PLL device 1085, after its single-phase AC voltage V1 receiving pi type filter 103 output and single-phase alternating current I1, calculate one first real power P, the one first fictitious power Q of direct current to an AC adaptor 102 and voltage phase angle θ e of single-phase electrical network 105; One low-voltage penetrates control device 1086, the single-phase AC voltage V1 that the first real power P that its reception PLL device 1085 calculates, pi type filter 103 export and direct current are to after the rated current Imax of AC adaptor 102, calculate one second real power P* and the one second fictitious power Q* of single-phase electrical network 105, and when low-voltage penetrate control device 1086 immediately judge to occur abnormal when single-phase electrical network 105 time, low-voltage penetrates control device 1086 and exports an output signal, and exports one after comparing the first real power P and the second real power P* and select signal; One second adder-subtracter B, there is a first input end, one second input and an output, its first input end receives the second real power P*, its second input receives the first real power P, second adder-subtracter B calculates one second error amount after receiving the second real power P* and the first real power P, and exports the second error amount by output; One first interrupteur SW 1, one termination receives the first error amount that the first adder-subtracter A exports, the other end receives the second error amount that the second adder-subtracter B exports, and the first interrupteur SW 1 penetrates according to low-voltage selection signal that control device 1086 exports and selects the first error amount and the second error amount one of them exports; One second switch SW2, its one end is a zero energy, the other end receives low-voltage and penetrates the second fictitious power Q* that control device 1086 exports, and penetrates according to low-voltage output signal that control device 1086 exports and select zero energy and the second fictitious power Q* one of them exports; One the 3rd adder-subtracter C, there is a first input end, one second input and an output, its first input end receives the first fictitious power Q that PLL device 1085 exports, its second input receive zero energy 0 that second switch SW2 exports and the second fictitious power Q* one of them, 3rd adder-subtracter C receives the first fictitious power Q and zero energy 0 and the second fictitious power Q* after one of them and calculates one the 3rd error amount, and by output output the 3rd error amount; One Intelligent controller 1084, receive the 3rd error amount that the 3rd adder-subtracter C exports and the first error amount that the first interrupteur SW 1 exports and the second error amount after one of them and carry out compensating movement, and exporting an a quadrature axis current Iq* and direct-axis current Id*, Intelligent controller 1084 is class neural network (NeuralNetwork; Or fuzzy class neural network (FuzzyNeuralNetwork NN); FNN) one of them; One current protective device 1083, receives after quadrature axis current Iq* and direct-axis current Id*, exports quadrature axis current Iq* and direct-axis current Id* after carrying out Limited Current action, prevents that electric current is excessive or electric current is too small, causes electricity generation system fault; One coordinate transformation unit 1082, after receiving the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 1083 and direct-axis current Id* and PLL device 1085 export, carry out the Coordinate Conversion between quadrature axis current Iq*, direct-axis current Id* and voltage phase angle θ e, and be converted to command current I1* and export computing module 107 to; Wherein computing module 107 receives and controls command current I1* that module 108 exports and the single-phase alternating current I1 that exports of pi type filter 103, error between algorithm electric current I 1* and single-phase alternating current I1 and compensate rear output one command voltage Vcon1 to pwm pulse width modulation controller 106, pwm pulse width modulation controller 106 exports a pwm pulse width modulated and controls signal reaches solar energy power generation module group 101 maximum power point voltage Vpv* with the direct voltage Vpv of stable input capacitance Cdc and control direct current and maintain electric current needed for single-phase electrical network 105 to the single-phase alternating current I1 that AC adaptor 102 exports after receiving command voltage Vcon1.

Please continue to refer to Fig. 2, when single-phase electrical network 105 does not break down, low-voltage penetrates control device 1086 and does not detect single-phase electrical network 105 exception occurs, therefore one end of second switch SW2 connects zero energy, and zero energy is exported to the 3rd adder-subtracter C, therefore the first input end of the 3rd adder-subtracter receives the first fictitious power Q that PLL device 1085 exports, second input receives zero energy 0, and the error amount calculated between the first fictitious power Q and zero energy 0, on the other hand, one end of first interrupteur SW 1 is connected to the error amount of the first adder-subtracter A output, then, Intelligent controller 1084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* and carry out Limited Current action to current protective device 1083, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 1082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 1083 and direct-axis current Id* and PLL device 1085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current I1* and export computing module 107 to, wherein computing module 107 receives the command current I1* and the single-phase alternating current I1 that exports of pi type filter 103 that coordinate transformation unit 1082 exports, error between algorithm electric current I 1* and single-phase alternating current I1 and compensate rear output command voltage Vcon1 to pwm pulse width modulation controller 106, pwm pulse width modulation controller 106 exports pwm pulse width modulated and controls signal to direct current to AC adaptor 102 after receiving command voltage Vcon1, the maximum power point voltage Vpv* of solar energy power generation module group 101 is met with the direct voltage Vpv of control connection direct current to the electric capacity Cdc of AC adaptor 102, to maintain solar energy power generation module group 101 and direct current to the power-balance between AC adaptor 102, with control direct current electric current needed for single-phase electrical network 105 maintained to the single-phase alternating current I1 that AC adaptor 102 exports.

Please continue to refer to Fig. 2, when single-phase electrical network 105 breaks down, low-voltage penetrates control device 1086 and detects single-phase electrical network 105 and exception occurs and exports an output signal to second switch SW2, therefore the switching connection of one end of second switch SW2 is the second fictitious power Q*, and export the second fictitious power Q* to the 3rd adder-subtracter C, therefore the first input end of the 3rd adder-subtracter receives the first fictitious power Q that PLL device 1085 exports, second input receives the second fictitious power Q*, and the error amount calculated between the first fictitious power Q and the second fictitious power Q*, on the other hand, low-voltage penetrates the first real power P that control device 1086 judges instantly when being greater than the second real power P*, the power output representing solar energy power generation module group 101 is greater than the power needed for single-phase electrical network 105, therefore low-voltage penetrates control device 1086 exports the error amount selecting signal to the first interrupteur SW 1 to switch its one end to connect the second adder-subtracter B, its error amount is the error amount between the first real power P and the second real power P*, then, Intelligent controller 1084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* export quadrature axis current Iq* and direct-axis current Id* to coordinate transformation unit 1082 after current protective device 1083 carries out Limited Current action, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 1082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 1083 and direct-axis current Id* and PLL device 1085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current I1* and export computing module 107 to, after wherein computing module 107 receives and controls command current I1* that module 108 exports and the single-phase alternating current I1 that exports of pi type filter 103, error between algorithm electric current I 1* and single-phase alternating current I1 and compensate rear output command voltage Vcon1 to pwm pulse width modulation controller 106, pwm pulse width modulation controller 106 exports pwm pulse width modulated and controls signal to direct current to AC adaptor 102 after receiving command voltage Vcon1, to maintain solar energy power generation module group 101 and direct current to the power-balance between AC adaptor 102, with control direct current electric current needed for single-phase electrical network 105 maintained to the single-phase alternating current I1 that AC adaptor 102 exports, to tackle the voltage collapse of single-phase electrical network 105, on the other hand, low-voltage penetrates the first real power P that control device 1086 judges instantly when being less than or equal to the second real power P*, the power output representing solar energy power generation module group 101 is less than or equal to the power needed for single-phase electrical network 105, still can use and follow the trail of maximum power point voltage Vpv* mode, therefore low-voltage penetrates control device 1086 exports and select signal to the first interrupteur SW 1 to switch its one end to connect the error amount that the first adder-subtracter A exports, its error amount is the error amount between direct voltage Vpv and maximum power point voltage Vpv*, then, Intelligent controller 1084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* export quadrature axis current Iq* and direct-axis current Id* to coordinate transformation unit 1082 after current protective device 1083 carries out Limited Current action, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 1082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 1083 and direct-axis current Id* and PLL device 1085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current I1* and export computing module 107 to, wherein computing module 107 receives and controls command current I1* that module 108 exports and the single-phase alternating current I1 that exports of pi type filter 103, error between algorithm electric current I 1* and single-phase alternating current I1 and compensate rear output command voltage Vcon1 to pwm pulse width modulation controller 106, pwm pulse width modulation controller 106 exports pwm pulse width modulated and controls signal to direct current to AC adaptor 102 after receiving command voltage Vcon1, the maximum power point voltage Vpv* of solar energy power generation module group 101 is met with the direct voltage Vpv of control connection direct current to the electric capacity Cdc of AC adaptor 102, to maintain solar energy power generation module group 101 and direct current to the power-balance between AC adaptor 102, with control direct current electric current needed for single-phase electrical network 105 maintained to the single-phase alternating current I1 that AC adaptor 102 exports, to tackle the voltage collapse of single-phase electrical network 105.

In this embodiment, low-voltage penetrates control device 1086 for set by various countries' grid codes, and such as IEEE-1547, E.ON and UL-1741 etc., thus have low-voltage and penetrate function (LowVoltageRideThrough; LVRT), in addition, penetrate the single-phase electrical network 105 of the instant detecting of control device 1086 by low-voltage and whether exception occurs, and the instant direct voltage Vpv controlling single-phase alternating current I1 that direct current exports AC adaptor 102 and electric capacity Cdc, can prevent because single-phase electrical network 105 exception causes greatest energy output loss.It should be noted that in this embodiment and only use an electric pressure converter, be i.e. one-phase voltage transitions, but not the two benches voltage transitions that general electricity generation system uses, therefore solar energy electricity generation system 10 can significantly reduce costs and volume, increases the facility of usability.

Please refer to Fig. 3, the Intelligent controller 1084 for Fig. 2 is with a class neural network (NeuralNetwork; Or a fuzzy class neural network (FuzzyNeuralNetwork NN); Schematic internal view when FNN) implementing.

With class neural network (NeuralNetwork, or fuzzy class neural network (FuzzyNeuralNetwork NN), FNN) time as Intelligent controller 1084, class neural network is inner or fuzzy class neural network inside comprises an input unit 10841, one processing unit 10842 and an output unit 10843, input unit 10841 is export processing unit 10842 to after the 3rd error amount that exports of the first error amount of exporting of reception first interrupteur SW 1 or the second error amount and the 3rd adder-subtracter C, processing unit 10842 receives the 3rd error amount that input unit 10841 exports and the first error amount that the first interrupteur SW 1 exports and the second error amount after one of them, instant the first error amount that 3rd error amount and the first interrupteur SW 1 are exported and the second error amount one of them be converted to functional form, and instant compensate the first error amount that the 3rd error amount and the first interrupteur SW 1 export and the second error amount one of them, export output unit 10843 afterwards to, output unit 10843 receive that processing unit 10842 exports through function conversion with compensate after the 3rd error amount and the first error amount of exporting of the first interrupteur SW 1 and the second error amount one of them, the first error amount afterwards the 3rd error amount of functional form and the first interrupteur SW 1 exported and the second error amount one of them, resolve to direct-axis current Id* and quadrature axis current Iq* respectively, should be noted, during using class neural network or fuzzy class neural network as Intelligent controller 1084, immediately error compensation can be carried out, and be automatically adjusted to Intelligent controller 1084 according to received error amount and can read the function with computing, therefore response speed can be promoted significantly, compared to existing pi controller (ProportionalIntegralController, PIController) operational parameter that manually adjustment is inner is needed just can to carry out error compensation, adopt the Intelligent controller 1084 of class neural network or fuzzy class neural network immediately to carry out function conversion according to received error amount and compensate, therefore there is the advantage of high response speed.

Please refer to Fig. 4, is the schematic diagram of the solar energy electricity generation system of the present invention one second embodiment.

First, a solar energy electricity generation system 100, comprises a solar energy power generation module group 1001, has an output, after it receives outside sunlight, is converted to direct voltage Vpv, and produces direct current Ipv; Electric capacity Cdc, itself and solar energy power generation module group 1001 are connected in parallel, and export after receiving direct voltage Vpv; One direct current is to AC adaptor 1002, there is a first input end, one second input and an output, its output has three end points a, b, c, first input end is electrically connected at electric capacity Cdc, direct voltage Vpv is converted to three-phase alternating voltage Vab, Vbc, Vca, and direct current exports three-phase alternating voltage Vab, Vbc, Vca and three-phase alternating current Ia, Ib, Ic to the output of AC adaptor 1002; Filter 1003, there is input and output, input is electrically connected at the output of direct current to AC adaptor 1002, in order to export after the noise of filtering three-phase alternating voltage Vab, Vbc, Vca and three-phase alternating current Ia, Ib, Ic, avoid because of the excessive interference voltage of noise and current signal, filter 1003 utilizes three inductance L a, Lb, Lc formation; Relay 1004, has input and output, and input is electrically connected at the output of filter 1003; One three phase network 1005, have an input and an output, input is electrically connected at the output of relay 1004; Control module 1008, have first input end, the second input and output, first input end is electrically connected at the output of solar energy power generation module group 1001, and the second input is electrically connected at the output of filter 1003; Computing module 1007, has first input end, the second output and output, and first input end is electrically connected at the output controlling module 1008, and the second input is electrically connected at the output of filter 1003; And pwm pulse width modulation controller 1006, have input and output, input is electrically connected at the output of computing module 1007, and output is electrically connected at second input of direct current to AC adaptor 1002.

Please continue to refer to Fig. 4, control module 1008 and comprise maximum power tracing unit 10081, after the direct voltage Vpv that its reception solar energy power generation module group 1001 exports and direct current Ipv, follow the trail of the power maximum of solar energy power generation module group 1001 and calculate a maximum power point voltage Vpv*, namely meaning follows the trail of the maximum power point voltage Vpv* of solar energy power generation module group 1001 when power maximum, uses and improves solar energy generating efficiency, one first adder-subtracter A, there is a first input end, one second input and an output, its first input end receives the maximum power point voltage Vpv* that maximum power tracing unit 10081 exports, its second input receives the direct voltage Vpv that solar energy power generation module group 1001 exports, first adder-subtracter A calculates the first error amount by maximum power point voltage Vpv* and direct voltage Vpv, and exports the first error amount by output, PLL device 10085, its receiving filter 1003 export three-phase alternating voltage Vab, Vbc, Vca and three-phase alternating current Ia, Ib, Ic after, calculate first real power P, the first fictitious power Q of direct current to the AC adaptor 1002 and voltage phase angle θ e of three phase network 1005, low-voltage penetrates control device 10086, three-phase alternating voltage Vab, Vbc, Vca that the first real power P that its reception PLL device 10085 calculates, filter 1003 export and direct current are to after the rated current Imax of AC adaptor 1002, after the second real power P* calculating three phase network 1005 and the second fictitious power Q*, and low-voltage penetrates control device 10086 immediately judges when three phase network 1005 occurs abnormal, export an output signal, and export after comparing the first real power P and the second real power P* and select signal, second adder-subtracter B, there is first input end, the second input and output, its first input end receives the second real power P*, its second input receives the first real power P, second adder-subtracter B calculates the second error amount after receiving the second real power P* and the first real power P, and exports the second error amount by output, first interrupteur SW 1, one termination receives the first error amount that the first adder-subtracter A exports, the other end receives the second error amount that the second adder-subtracter B exports, and the first interrupteur SW 1 penetrates according to low-voltage selection signal that control device 10086 exports and selects the first error amount and the second error amount one of them exports, one second switch SW2, its one end is a zero energy, the other end receives low-voltage and penetrates the second fictitious power Q* that control device 10086 exports, and penetrates according to low-voltage output signal that control device 10086 exports and select zero energy 0 and the second fictitious power Q* one of them exports, 3rd adder-subtracter C, there is first input end, the second input and output, its first input end receives the first fictitious power Q that PLL device 10085 exports, its second input receive zero energy 0 that second switch SW2 exports and the second fictitious power Q* one of them, 3rd adder-subtracter C receives the first fictitious power Q and zero energy 0 and the second fictitious power Q* after one of them and calculates the 3rd error amount, and by output output the 3rd error amount, Intelligent controller 10084, receive the 3rd error amount that the 3rd adder-subtracter C exports and the first error amount that the first interrupteur SW 1 exports and the second error amount after one of them and carry out compensating movement, and exporting quadrature axis current Iq* and direct-axis current Id*, Intelligent controller 10084 is class neural network (NeuralNetwork, or fuzzy class neural network (FuzzyNeuralNetwork NN), FNN) one of them, current protective device 10083, receives after quadrature axis current Iq* and direct-axis current Id*, exports quadrature axis current Iq* and direct-axis current Id* after carrying out Limited Current action, prevents that electric current is excessive or electric current is too small, causes electricity generation system fault, one coordinate transformation unit 10082, after receiving the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 10083 and direct-axis current Id* and PLL device 10085 export, carry out the Coordinate Conversion between quadrature axis current Iq*, direct-axis current Id* and voltage phase angle θ e, and be converted to command current Ia*, Ib*, Ic* and export computing module 1007 to, wherein computing module 1007 receives the command current Ia* that coordinate transformation unit 10082 exports, Ib*, the three-phase alternating current Ia that Ic* and filter 1003 export, Ib, Ic, algorithm electric current I a*, Ib*, Ic* and three-phase alternating current Ia, Ib, error between Ic and compensate rear output command voltage Vcona, Vconb, Vconc is to pwm pulse width modulation controller 1006, pwm pulse width modulation controller 1006 receives command voltage Vcona, Vconb, export pwm pulse width modulated after Vconc and control maximum power point voltage Vpv* that signal reaches solar energy power generation module group 1001 with the direct voltage Vpv of control inputs electric capacity Cdc and the three-phase alternating current Ia controlling direct current AC adaptor 1002 is exported, Ib, Ic maintains the electric current needed for three phase network 1005.

Please continue to refer to Fig. 4, when three phase network 1005 does not break down, low-voltage penetrates control device 10086 and does not detect three phase network 1005 exception occurs, therefore one end of second switch SW2 connects zero energy 0, and export zero energy 0 to the 3rd adder-subtracter C, therefore the first input end of the 3rd adder-subtracter C receives the first fictitious power Q that PLL device 10085 exports, second input receives zero energy 0, and the error amount calculated between the first fictitious power Q and zero energy 0, on the other hand, one end of first interrupteur SW 1 is connected to the error amount of the first adder-subtracter A output, the i.e. error amount of direct voltage Vpv and maximum power point voltage Vpv*, then, Intelligent controller 10084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* export coordinate transformation unit 10082 to after current protective device 10083 carries out Limited Current action, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 10082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 10083 and direct-axis current Id* and PLL device 10085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current Ia*, Ib*, Ic* exports computing module 1007 to, wherein computing module 1007 receives the command current Ia* that coordinate transformation unit 10082 exports, Ib*, the three-phase alternating current Ia that Ic* and filter 1003 export, Ib, Ic, algorithm electric current I a*, Ib*, Ic* and three-phase alternating current Ia, Ib, error between Ic and compensate rear output command voltage Vcona, Vconb, Vconc is to pwm pulse width modulation controller 1006, pwm pulse width modulation controller 1006 receives command voltage Vcona, Vconb, export pwm pulse width modulated after Vconc and control signal to direct current to AC adaptor 1002, the maximum power point voltage Vpv* of solar energy power generation module group 1001 is met with the direct voltage Vpv of control connection direct current to the electric capacity Cdc of AC adaptor 1002, to maintain solar energy power generation module group 1001 and direct current to the power-balance between AC adaptor 1002, three-phase alternating current Ia AC adaptor 1002 exported with control direct current, Ib, Ic maintains the electric current needed for three phase network 1005.

Please continue to refer to Fig. 4, when three phase network 1005 breaks down, low-voltage penetrates control device 10086 and detects three phase network 1005 and exception occurs and exports an output signal to second switch SW2, therefore the switching connection of one end of second switch SW2 is the second fictitious power Q*, and export the second fictitious power Q* to the 3rd adder-subtracter C, therefore the first input end of the 3rd adder-subtracter receives the first fictitious power Q that PLL device 10085 exports, second input receives the second fictitious power Q*, and the error amount calculated between the first fictitious power Q and the second fictitious power Q*, on the other hand, low-voltage penetrates the first real power P that control device 10086 judges instantly when being greater than the second real power P*, the power output representing solar energy power generation module group 1001 is greater than the power needed for three phase network 1005, therefore low-voltage penetrates control device 10086 exports the error amount selecting signal to the first interrupteur SW 1 to switch its one end to connect the second adder-subtracter B, its error amount is the error amount between the first real power P and the second real power P*, then, Intelligent controller 10084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* export coordinate transformation unit 10082 to after current protective device 10083 carries out Limited Current action, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 10082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 10083 and direct-axis current Id* and PLL device 10085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current Ia*, Ib*, Ic* exports computing module 1007 to, wherein computing module 1007 receives the command current Ia* that coordinate transformation unit 10082 exports, Ib*, the three-phase alternating current Ia that Ic* and filter 1003 export, Ib, Ic, algorithm electric current I a*, Ib*, Ic* and three-phase alternating current Ia, Ib, error between Ic and compensate rear output command voltage Vcona, Vconb, Vconc is to pwm pulse width modulation controller 1006, pwm pulse width modulation controller 1006 receives command voltage Vcona, Vconb, export pwm pulse width modulated after Vconc and control signal to direct current to AC adaptor 1002, to maintain solar energy power generation module group 1001 and direct current to the power-balance between AC adaptor 1002, three-phase alternating current Ia AC adaptor 1002 exported with control direct current, Ib, Ic maintains the electric current needed for three phase network 1005, to tackle the voltage collapse of three phase network 1005, on the other hand, low-voltage penetrates the first real power P that control device 10086 judges instantly when being less than or equal to the second real power P*, the power output representing solar energy power generation module group 1001 is less than or equal to the power needed for three phase network 1005, still can use and follow the trail of maximum power point voltage Vpv* mode, therefore low-voltage penetrates control device 10086 exports and select signal to the first interrupteur SW 1 to switch its one end to connect the error amount that the first adder-subtracter A exports, its error amount is the error amount between direct voltage Vpv and maximum power point voltage Vpv*, then, Intelligent controller 10084 carries out compensating movement after receiving error amount that the 3rd adder-subtracter C exports and the error amount that the first interrupteur SW 1 exports, and export quadrature axis current Iq* and direct-axis current Id* export coordinate transformation unit 10082 to after current protective device 10083 carries out Limited Current action, to prevent, electric current is excessive or electric current is too small, cause electricity generation system fault, after coordinate transformation unit 10082 receives the voltage phase angle θ e that the quadrature axis current Iq* that exports through current protective device 10083 and direct-axis current Id* and PLL device 1085 export, carry out quadrature axis current Iq*, Coordinate Conversion between direct-axis current Id* and voltage phase angle θ e, and be converted to command current Ia*, Ib*, Ic* exports computing module 1007 to, wherein computing module 1007 receives the command current Ia* that coordinate transformation unit 10082 exports, Ib*, the three-phase alternating current Ia that Ic* and filter 1003 export, Ib, Ic, algorithm electric current I a*, Ib*, Ic* and three-phase alternating current Ia, Ib, error between Ic and compensate rear output command voltage Vcona, Vconb, Vconc is to pwm pulse width modulation controller 1006, pwm pulse width modulation controller 1006 receives command voltage Vcona, Vconb, export pwm pulse width modulated after Vconc and control signal to direct current to AC adaptor 1002, the maximum power point voltage Vpv* of solar energy power generation module group 1001 is met with the direct voltage Vpv of control connection direct current to the electric capacity Cdc of AC adaptor 1002, to maintain solar energy power generation module group 1001 and direct current to the power-balance between AC adaptor 1002, three-phase alternating current Ia AC adaptor 1002 exported with control direct current, Ib, Ic maintains the electric current needed for three phase network 1005, to tackle the voltage collapse of three phase network 1005.

In this embodiment, low-voltage penetrates control device 10086 for set by various countries' grid codes, and such as IEEE-1547, E.ON and UL-1741 etc., thus have low-voltage and penetrate function (LowVoltageRideThrough; LVRT), in addition, penetrate control device 10086 instant detecting three phase network 1005 by low-voltage and whether exception occurs, and the instant direct voltage Vpv controlling three-phase alternating current Ia, Ib, Ic that direct current exports AC adaptor 1002 and electric capacity Cdc, can prevent three characteristics of the middle term electrical network 1005 exception from causing greatest energy output loss.It should be noted that, an electric pressure converter is only used, i.e. one-phase voltage transitions in this embodiment, but not the two benches voltage transitions that general electricity generation system uses, therefore solar energy electricity generation system 100 can significantly reduce costs and volume, increase the facility of usability.

Please refer to Fig. 5, the Intelligent controller 10084 for Fig. 4 is with a class neural network (NeuralNetwork; Or a fuzzy class neural network (FuzzyNeuralNetwork NN); Schematic internal view when FNN) implementing.

With class neural network (NeuralNetwork, or fuzzy class neural network (FuzzyNeuralNetwork NN), FNN) time as Intelligent controller 10084, class neural network is inner or fuzzy class neural network inside comprises an input unit 100841, one processing unit 100842 and an output unit 100843, input unit 100841 is export processing unit 100842 to after the 3rd error amount that exports of the first error amount of exporting of reception first interrupteur SW 1 or the second error amount and the 3rd adder-subtracter C, processing unit 100842 receives the 3rd error amount that input unit 100841 exports and the first error amount that the first interrupteur SW 1 exports and the second error amount after one of them, instant the first error amount that 3rd error amount and the first interrupteur SW 1 are exported and the second error amount one of them be converted to functional form, and instant compensate the first error amount that the 3rd error amount and the first interrupteur SW 1 export and the second error amount one of them, export output unit 100843 afterwards to, output unit 100843 receive that processing unit 100842 exports through function conversion with compensate after the 3rd error amount and the first error amount of exporting of the first interrupteur SW 1 and the second error amount one of them, the first error amount afterwards the 3rd error amount of functional form and the first interrupteur SW 1 exported and the second error amount one of them, resolve to direct-axis current Id* and quadrature axis current Iq* respectively, should be noted, during using class neural network or fuzzy class neural network as Intelligent controller 10084, immediately error compensation can be carried out, and be automatically adjusted to Intelligent controller 10084 according to received error amount and can read the function with computing, therefore response speed can be promoted significantly, compared to existing pi controller (ProportionalIntegralController, PIController) operational parameter that manually adjustment is inner is needed just can to carry out error compensation, adopt the Intelligent controller 10084 of class neural network or fuzzy class neural network immediately to carry out function conversion according to received error amount and compensate, therefore there is the advantage of high response speed.

The foregoing is only preferred embodiment of the present invention, and be not used to limit interest field of the present invention; Simultaneously above description, the special personage for correlative technology field should understand and implement, and therefore other equivalence completed under not departing from disclosed spirit changes or modifies, and all should be included in claim.

Claims

1. a solar energy electricity generation system, is characterized in that, comprising:

One solar energy power generation module group, has an output, and it receives a solar energy and this solar energy is converted to a direct voltage, and produces a direct current;

One electric capacity, this output of itself and this solar energy power generation module group is connected in parallel, and exports after receiving this direct voltage;

One direct current is to AC adaptor, and have a first input end, one second input and an output, this first input end is electrically connected in parallel in this electric capacity, and this direct voltage is converted to an alternating voltage, and produces an alternating current;

One filter, has an input and an output, and this input is electrically connected at this direct current this output to AC adaptor, in order to the noise of this alternating voltage of filtering and this alternating current;

One relay, has an input and an output, and this input is electrically connected at this output of this filter;

One electrical network, has an input and an output, and this input is electrically connected at this output of this relay;

One controls module, and have a first input end, one second input and an output, this first input end is electrically connected at this output of this solar energy power generation module group, and this second input is electrically connected at this output of this filter;

One computing module, have a first input end, one second output and an output, this first input end is electrically connected at this output of this control module, and this second input is electrically connected at this output of this filter; And

One pwm pulse width modulation controller, has an input and an output, and this input is electrically connected at this output of this computing module, and this output is electrically connected at this direct current this second input to AC adaptor;

Wherein, this first input end of this control module is received from this direct voltage and this direct current of the output of this solar energy power generation module group, this control module is followed the trail of a power maximum of this solar energy power generation module group by this direct voltage and this direct current and is calculated a maximum power point voltage, this alternating current that this output that this second input of this control module receives this filter exports and this alternating voltage and this direct current are to a rated current of AC adaptor, this alternating voltage that this control module exports by this filter and this alternating current calculate a voltage phase angle of one first real power that this direct current exports AC adaptor and one first fictitious power and this electrical network, and this alternating voltage that this control module exports by this filter and this direct current this rated current to AC adaptor calculate one second real power and one second fictitious power of this electrical network,

Wherein, when this electrical network occurs abnormal, this control module exports an output signal, and after comparing this first real power and this second real power, export one select signal, this control module exports a command current this first input end to this computing module according to this selection signal and this output signal, this alternating current that the output that this first input end of this computing module and this second input receive this command current and this filter respectively exports, error and compensate this error one of between this alternating current of union and this command current, and export a command voltage to this pwm pulse width modulation controller, this pwm pulse width modulation controller exports a pwm pulse width modulated according to this command voltage and controls signal, this direct voltage of this electric capacity of this pwm pulse width modulated control signal control inputs reaches this maximum power point voltage and this direct current of control reaches the electric current needed for this electrical network to this alternating current that AC adaptor exports, and

Wherein, this direct current is one to the number of AC adaptor.

2. solar energy electricity generation system as claimed in claim 1, it is characterized in that, this control module comprises:

One maximum power tracing unit, after it receives this direct voltage and this direct current, follows the trail of this power maximum of this solar energy power generation module group and calculates this maximum power point voltage;

One first adder-subtracter, there is a first input end, one second input and an output, this first input end receives this maximum power point voltage that this maximum power tracing unit exports, this second input receives this direct voltage that this solar energy power generation module group exports, this first adder-subtracter receives this maximum power point voltage and this direct voltage calculates one first error amount, and this output exports this first error amount;

One PLL device, the voltage that its this output receiving this filter exports and electric current, calculate this voltage phase angle of this first real power, this first fictitious power and this electrical network;

One low-voltage penetrates control device, the voltage that it receives this first real power, this filter exports and this direct current are to this rated current of AC adaptor, calculate this second real power and this second fictitious power of this electrical network, and when this electrical network occurs abnormal, export this output signal, and after comparing this first real power and this second real power, export this selection signal;

One second adder-subtracter, there is a first input end, one second input and an output, this first input end receives this second real power, this second input receives this first real power, after this second adder-subtracter receives this second real power and this first real power, calculate one second error amount, this output exports this second error amount;

One first switch, one termination receives this first error amount, and the other end receives this second error amount, and this first switch selects this first error amount and this second error amount according to this selection signal, and one of them exports;

One second switch, its one end is a zero energy, and the other end receives this low-voltage and penetrates this second fictitious power that control device exports, and one of them exports to select this zero energy and this second fictitious power according to this output signal;

One the 3rd adder-subtracter, there is a first input end, one second input and an output, its first input end receives this first fictitious power that this PLL device exports, its second input receive this second switch export this zero energy and this second fictitious power one of them, 3rd adder-subtracter receive this first fictitious power and this zero energy and this second fictitious power one of them, and calculating one the 3rd error amount, this output exports the 3rd error amount;

One Intelligent controller, receive this first error amount that the 3rd error amount and this first switch export and this second error amount one of them, carry out one of them compensating movement of the 3rd error amount and this first error amount and this second error amount, and export a quadrature axis current and a direct-axis current;

One current protective device, receives this quadrature axis current and this direct-axis current, limits this quadrature axis current and this direct-axis current size of current, prevents electric current excessive too small with electric current;

One coordinate transformation unit; after receiving this voltage phase angle of this electrical network that this quadrature axis current and this direct-axis current of exporting through this current protective device and this PLL device export; carry out the Coordinate Conversion between this quadrature axis current, this direct-axis current and this voltage phase angle, and be converted to this command current and export this computing module to.

3. solar energy electricity generation system as claimed in claim 2, it is characterized in that, this Intelligent controller is a class neural network, and such neural network comprises:

One input unit, in order to receive this first error amount that the 3rd error amount and this first switch export and this second error amount one of them;

One processing unit, receive this first error amount that the 3rd error amount that exported by this input unit and this first switch export and this second error amount after one of them, and this first error amount and this second error amount of immediately the 3rd error amount and this first switch being exported one of them be converted to functional form, and compensate this first error amount of the 3rd error amount and the output of this first switch and this second error amount one of them; And

One output unit, receive by this processing unit export through function change with compensate after the 3rd error amount and this first error amount of exporting of this first switch and this second error amount one of them, and the 3rd error amount of functional form is resolved to this direct-axis current, and this first error amount that this first switch of functional form is exported and this second error amount wherein one resolve to this quadrature axis current.

4. solar energy electricity generation system as claimed in claim 2, it is characterized in that, this Intelligent controller is a fuzzy class neural network, and this fuzzy class neural network comprises:

One output unit, receive by this processing unit export through function change with compensate after the 3rd error amount and this first error amount of exporting of this first switch and this second error amount one of them, and the 3rd error amount of functional form is resolved to this direct-axis current, and this first error amount that this first switch of functional form is exported and this second error amount one of them resolve to this quadrature axis current.

5. solar energy electricity generation system as claimed in claim 1, is characterized in that, this electrical network be a single-phase electrical network and a three phase network one of them.

6. solar energy electricity generation system as claimed in claim 1, is characterized in that, the electric current that this filter exports be a monophase current and a three-phase current one of them.

7. solar energy electricity generation system as claimed in claim 1, is characterized in that, the voltage that this filter exports be a single-phase voltage and a three-phase voltage one of them.