WO2013143190A1 - Système de poursuite solaire pour un service automatique de production d'énergie photovoltaïque - Google Patents

Système de poursuite solaire pour un service automatique de production d'énergie photovoltaïque Download PDF

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Publication number
WO2013143190A1
WO2013143190A1 PCT/CN2012/074189 CN2012074189W WO2013143190A1 WO 2013143190 A1 WO2013143190 A1 WO 2013143190A1 CN 2012074189 W CN2012074189 W CN 2012074189W WO 2013143190 A1 WO2013143190 A1 WO 2013143190A1
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WIPO (PCT)
Prior art keywords
output
terminal
power
self
tracking
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PCT/CN2012/074189
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English (en)
Chinese (zh)
Inventor
茅建生
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江苏振发新能源科技发展有限公司
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Priority to JP2014506740A priority Critical patent/JP5688186B2/ja
Publication of WO2013143190A1 publication Critical patent/WO2013143190A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/428—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis with inclined axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/11—Driving means
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the invention relates to the technical field of photovoltaic power generation, in particular to a novel self-service tracking system for photovoltaic power generation.
  • the existing photovoltaic power generation single-axis solar day tracking device most of the foreign countries use the tracker installation position as the way to select the latitude and longitude for the day tracking, most of the domestic use of complex multi-channel cloudy, night, horizontal orientation sensor identification
  • the solar cell module is synchronized with the incident angle of the solar light, thereby affecting the power generation efficiency of the photovoltaic power generation component, and at the same time, it is necessary to configure the battery and its charge and discharge controller outside the tracker, and the system equipment cost is high.
  • Patent number is ZL200710020572.6
  • the Chinese patent discloses an adaptive sun-tracking device for photovoltaic power generation, which is composed of two photovoltaic modules that are respectively installed along the rotating shaft as a photovoltaic driver, and the output terminals of the two sets of photovoltaic modules are connected in series and then the geared motor Connected, the two sets of photovoltaic modules act as both a solar photoelectric sensor and a drive controller and power supply for the geared motor, so that it does not need to be equipped with a battery and a charge and discharge controller, and there is no need to configure electronic control components, thereby reducing Many intermediate links of control and driving have the advantages of simple system structure, few components and low cost.
  • the tracking drive motor running in the online comparison often works at excitations above several Hz, even close to tens of hertz.
  • the drive motor and the mechanical structure not only cause erroneous mechanical vibration in the excitation oscillation operation of such current, but also generate a vibration type with a serious shaft angle due to the large oscillation of the motor current (excitation current).
  • the deflection causes the inertial wear of the mechanical structure to be generated, and the meshing gap is gradually increased, even exceeding the meshing gap of the original design, so that the deviation of the tracking mechanical precision is increased.
  • the present invention provides a novel self-service tracking system for photovoltaic power generation, which can effectively solve the problem that the existing adaptive day tracking device system is unstable in operation, short in service life, high in system cost and high operating cost. .
  • the technical solution is such that it comprises a solar panel assembly and a driving motor, and the power output end of the solar panel assembly is connected to the inverter power generation system, characterized in that it further comprises a seat type reducer, the solar battery
  • the plate assembly is mounted on the bracket, the bracket is mounted on the rotating shaft through the bracket connecting plate, and the rotating shaft is connected to the output shaft of the seat reducer through an axial flange, and the seat reducer passes through the reducer
  • the seat is mounted on the bracket, and the driving motor is connected to the worm gear and is driven to drive the seat reducer.
  • the vertical surface of the solar panel assembly is mounted with an angle light intensity sensor.
  • the power output end of the solar panel assembly is further connected with a self-service power generator, and the power output end of the self-service power generator is respectively connected with a tracking tracking processor and a 1 ° motor driver, the self-service power generator respectively providing working power for the tracking tracking processor, the 1 ° motor driver, and the driving motor, the driving motor and the driving motor °
  • the motor driver is electrically connected, and the angle light intensity sensor and the 1° motor driver are electrically connected to the tracking tracking processor.
  • the rotating shaft includes a main shaft and a secondary shaft
  • the axial flange includes a main shaft flange and a secondary shaft flange
  • the main shaft flange and the second shaft flange are respectively mounted on the main shaft output end of the seat type reducer and the second a shaft output end
  • one end of the main shaft is sleeved on the outer circumference of the main shaft flange
  • the other end is mounted on the column of the bracket through a bearing seat
  • the sub-shaft is cantilever mounted on the secondary shaft output of the seat reducer
  • the end shaft and the second shaft sleeve are sleeved on the outer circumference of the secondary shaft flange of the secondary shaft output end of the seat type reducer, and the seat type speed reducer and the speed reducer base are integrated, and the seat type reducer base is installed at the On the triangular bracket of the bracket;
  • the main shaft and the secondary shaft are both square tube shafts, and the inner circumferences of the main shaft and the secondary
  • the input end of the series buck module and the power input end of the driving power controller, the power output end of the LM78 series buck module respectively goes to the tracking tracking processor, the 1 °
  • the logic processing circuit of the motor driver provides the working power supply Vcc1, and the power output terminal Vcc2 of the driving power controller is connected to the driving power terminal of the 1 ° motor driver (Vcc2)
  • the control input end of the driving power controller is electrically connected to the power control output terminal (DYKZ) of the tracking control processor;
  • the tracking tracking processor includes a light intensity screening processing module and a logic control unit, and the logic control unit includes an I/O port, a logic master control processing module, a 1° feature triggering module, and a pulse generator module, wherein the angle light intensity sensor is connected to the light intensity discrimination processing module electronic control signal, and the light intensity discrimination processing module passes the light intensity sensing characteristic value formed by the screening process through the I/O
  • the port is transmitted to the master control processing module, and the master control processing module performs
  • the master control processing module controls the 1 ° pulse generator every 4 Minutes to output an electrical pulse that deflects the seat reducer by an electrical pulse width of 1 °;
  • the tracking tracking processor is composed of an analog, digital circuit and an MCU microchip;
  • the angle light intensity sensor is perpendicular to the plane of the solar panel assembly;
  • the angle light intensity sensor is a micro strip solar cell sheet, and the micro strip solar cell sheet is mounted on a plane of the solar panel assembly a vertical plane on both sides;
  • the angle light intensity sensor is electrically and electronically connected to the logic control unit by the light intensity discrimination processing module;
  • the 1 ° motor driver includes a driving module IC2 and protection diodes D1, D2, D3, D4, and Vcc2 of the driving module The input end is connected to a motor driving power source Vcc2 of the self-service power generator, and the 1° motor driver logic circuit operates a power supply voltage Vcc1 and the self-service power generator output Vcc1 Connected, motor drive operation input logic A, B
  • the output ground (reference ground) GND of the self-service power generator is connected to the GND of the driving module, and is also connected to the b terminal of the protection diodes D2 and D4 to protect the diode D1.
  • the a terminal of D3 is connected to Vcc2 of the driver module after interconnection, and is connected to the output of the self-service power generator Vcc2, and the output terminal OUT1 of the driving module and the protection diode D2
  • the terminal is connected to the b terminal of D1 and used as the drive output QD1 outer lead.
  • the output terminal OUT2 of the driver module is connected to the a terminal of the protection diode D4 and the b terminal of the D3 as a drive output.
  • QD2 outer lead, 1 ° motor driver output QD1, QD2 are connected to the terminals MD1, MD2 in the junction box, respectively.
  • the pre-start PWM generator is a voltage generated by the solar cell module for DC/DC Buck PWM converter power supply PWM pulse, through the tuning of the adjustable PWM, the Buck The buck converter can generate the logic control unit provided to the tracking tracking processor and the power supply voltage required for the operation of the driving motor, and the composition thereof includes the regulated reference step-down resistor R An adjustable resistor RW, a Zener diode DW, a filter capacitor C, and an adjustable PWM pulse generator composed of a standard IC chip; the BUCK The buck converter is a single-tube non-isolated DC converter whose output voltage is lower than the input voltage, the output current is continuous current, and the input current is pulsating, and includes a power switch tube Q, a freewheeling power diode D, and an inductor L.
  • the storage filter capacitor Cf; the regulated reference step-down resistor R and the adjustable resistor RW for selecting the self-service power supply starting voltage are connected in series with a terminal terminal PA+ and serve as the output terminal and the Buck.
  • the b of the buck converter's power switch Q is connected, the regulated reference buck resistor R is connected to the adjustable resistor RW for easy selection of the self-service power supply voltage, and the b terminal is connected to the Zener diode DW.
  • the filter capacitor C a is connected to the Vcc of the adjustable PWM IC standard chip, and the input PA- is connected to the b terminal of the Zener diode DW, and simultaneously with the filter capacitor C b
  • the terminal is connected to the GND of the adjustable PWM IC standard chip and then connected to the GND as an output; the pre-start pulse MF and Buck generated by the pre-start PWM generator
  • the input of the power switch Q of the buck converter is connected to drive the Buck buck converter to generate the output Vcc2 ° while also providing the LM78 that produces the output Vcc1.
  • the pre-processing voltage required at the input of the series step-down circuit; the step-down circuit that generates Vcc1 is composed of the step-down IC of the LM78 series; the driving power controller is driven by the power supply switch KG , constant current source LM317, constant current limited sampling resistor R1, optocoupler GO, optocoupler input current limiting resistor RD, output pull-up resistor R0 and output pull-down resistor RKG;
  • the output of the Buck buck converter Vcc2 ° is connected to the drive power switch KG at the same end of the KG.
  • the output of the driving power switch KG is connected to the input end of the constant current source circuit, and is connected to the i terminal of the filter capacitor CL1 at the same end, the constant current circuit output terminal u terminal and the constant current limited sampling resistor
  • the OU terminal connected in series R1 is connected to the adjustment terminal j of the constant current circuit while being connected to the output terminal of the constant current circuit, and is connected to the a terminal of the energy storage filter capacitor CL2, and the constant current source circuit includes the constant current source.
  • the photocoupler GO output pull-up resistor R0 b end is connected to the photocoupler GO output terminal 4, optocoupler GO
  • the other pin 3 is directly connected to the input D terminal of the drive power switch KG and then connected to the a terminal of the pull-down bias resistor RKG; the drive power control signal of the logic control unit
  • the DYKZ output is connected to pin 1 of the optocoupler GO input, optocoupler GO input photodiode current limiting resistor RD a terminal and optocoupler GO Input photodiode's negative terminal is connected to pin 2, optocoupler GO input current limiting resistor RD b and drive power switch KG pull-down bias resistor RKG b
  • the terminals are connected to the filter capacitor CL1, the b terminal of the storage filter capacitor CL2, and the reference CK terminal of the LM78 series circuit, and are output as the reference ground GND of Vcc2.
  • the present invention has the beneficial effects that it is provided with an angular light intensity sensor that is logically electrically connected to the logic control unit and ° Motor driver, wherein the angle light intensity sensor is provided with two vertical faces respectively mounted on the east and west sides of the plane of the solar panel assembly, and the output intensity of the two sensors is outputted for screening and controlled by a logic control unit Driving the motor and the rotating shaft to perform positioning of the solar battery module when the system is started in the morning and when the system is stopped in the evening; After the 1 ° motor driver is used for system startup and initial positioning of the solar cell module, the tracking tracking action of the system and the sun's deflection time from east to west is 15 ° / h according to the earth's polar axis.
  • the speed of the rotation from west to east is standard, and a 1 ° pulse generator module is set in the logic control unit, which sends out a drive motor to drive the shaft 1 every 4 minutes.
  • ° Deflect the electric pulse of the electric pulse width of the tracking, so as to achieve the all-weather single-axis tracking, so that the solar array on the main plane of the tracking device can realize vertical synchronous deflection with sunlight in the tracking from east to west. .
  • the department sets every three drive pulses during the self-tracking process of the solar cell module.
  • the solar cell panel assembly is again subjected to the initialization operation of the correction position of the tracking position by the angle light intensity sensor, thereby further ensuring that the solar cell module plane is always perpendicular to the sunlight during the self-service tracking process.
  • the two angle light intensity sensors are only used in the morning system start return operation, the evening system stop and the solar cell module self-service tracking process every three drive pulses (about each Short-time online comparison for initializing at 12 minutes), other times for the seat reducer driven by the 1 ° pulse generator for only 4 minutes 1 °The deflection of the shaft is driven, so the system no longer needs to do long-term continuous online comparison motor frequent drive control, which effectively improves the service life and reliability of the system's tracking device and reducer; in addition, the system is equipped with A self-service power generator, which is a logic control unit after stepping down the solar power generated by the self-contained solar cell module of the tracking device, 1 °The motor driver provides the working power supply, so it does not need to be separately configured with the
  • FIG. 1 is a schematic structural view of a self-service tracking system for photovoltaic power generation according to the present invention
  • FIG. 2 is a schematic view showing the installation of a rotating shaft, a reducer and a driving motor in the photovoltaic self-service tracking system of the present invention
  • Figure 3 is a schematic enlarged view of the structure A in Figure 1;
  • FIG. 4 is a schematic diagram of a control structure of a photovoltaic power generation self-service tracking system according to the present invention.
  • FIG. 5 is a schematic diagram showing the orientation of the tracking start positioning (morning) and the tracking stop positioning (evening) perpendicular to the sunlight according to the present invention
  • FIG. 6 is a connection diagram of a light intensity screening and a tracking tracking processor according to the present invention.
  • Figure 7 is a block diagram of the self-service power generator of the present invention.
  • Figure 8 is a schematic diagram of the self-service power generator circuit of the present invention.
  • Figure 9 is a schematic diagram of the driving power controller circuit of Figure 7.
  • Figure 10 is a schematic structural view of a 1 ° motor driver in the present invention.
  • Figure 11 is a working truth table of the 1 ° motor driver in the present invention.
  • FIG. 12 is a schematic diagram of system workflow control of a photovoltaic self-service self-tracking tracking system according to the present invention.
  • Figure 13 shows the solar panel reverse bias characteristic curve.
  • the invention comprises a solar panel assembly 1, a seat reducer 5 and a drive motor 15 , solar panel assembly 1 mounted on the bracket 4 , the bracket 4 through the bracket connecting plate 16 mounted on the shaft 2 , the shaft 2 through the axial flange and the seat reducer 5
  • the output shaft is connected, the seat reducer 5 is mounted on the bracket through the reducer base 12, and the seat reducer is connected to the shaft 2, and the drive motor 15 is driven by the worm gear.
  • the power output of the solar panel assembly 1 is connected to the inverter power generation system, and the solar panel assembly 1 is equipped with an angle light intensity sensor on the vertical sides of the east and west sides of the plane.
  • the power output end of the solar panel assembly 1 is also connected to the input end of the self-service power generator, and the power output end of the self-service power generator is respectively connected to the tracking tracking processor and 1 °
  • the motor driver which supplies the working frequency to the tracking tracking processor, the 1° motor driver and the driving motor 15, drives the windings of the motor to the terminals MD1, MD2 and 1 in the junction box 14 °
  • Motor driver output QD1, QD2 electronically controlled connection, angle light intensity sensor 6, 1 ° motor driver and tracking tracking processor logic electronically connected.
  • the axial flange includes a spindle flange 11 and a secondary shaft flange 13 , and the spindle flange 11 and the secondary shaft flange 13 are respectively mounted on the spindle output end and the secondary shaft output end of the seat reducer 5 , and the spindle 9
  • One end is sleeved on the outer circumference of the main shaft flange 11 and the other end is mounted on the column 18 of the bracket 7 through the bearing housing 17, and the secondary shaft 10 is cantilever mounted on the secondary shaft output end of the seat reducer 5, and the secondary shaft 10 Sleeve on the outer circumference of the secondary shaft flange 13 , the seat reducer 5 and the reducer base 12 are integrated, the reducer base 12 is mounted on the triangular bracket 19 of the bracket 7; the main shaft 9 and the secondary shaft 10 All of them are square tube shafts, and the inner circumferences of the main shaft 9 and the secondary shaft 10 are respectively matched with the outer circumferences of the main shaft
  • the bearing housing 17 is provided with an axial outer lead shaft 20, and the column 18 of the bracket 7 is mounted with a lug seat 21, the lug seat 21
  • Two ears 3 are symmetrically mounted, and the two ears 3 are connected by an anchor bolt 23, and the outer lead shaft 20 is provided with a radial through hole 24 through which the lug bolt 23 passes.
  • the upper radial through hole 24 is locked by the lock nut 22; in Fig. 2, 14 is the junction box.
  • the self-service power generator includes a pre-start PWM generator, a BUCK buck converter, and an LM78 series buck module; the input of the pre-start PWM generator is connected to the output PA+, PA- of the solar module.
  • the output of the pre-start PWM generator is connected to the input of the BUCK buck converter, and the output of the Buck buck converter Vcc2 ° is respectively connected to the input of the LM78 series buck module and the power input of the drive power controller, LM78 series
  • the power output end of the buck module provides a working power supply Vcc1 to the tracking processing processor and the logic processing circuit of the 1 ° motor driver, and the power output terminal Vcc2 of the driving power controller is connected to the driving power terminal (Vcc2) of the 1 ° motor driver.
  • the control input of the drive power controller is electrically connected to the power control output (DYKZ) of the tracking control processor;
  • the pre-start PWM generator is a power tube for DC/DC buck conversion of the voltage generated by the solar module.
  • the PWM pulse through the tuning of the adjustable PWM, can cause the Buck buck converter to generate the Buck transform voltage for tracking
  • the logic control unit of the processor and the driving motor need to provide power, and the output voltage can be selected and adjusted by tuning the duty ratio of the PWM, and the composition thereof includes a voltage-stabilized reference step-down resistor R, which is convenient for selecting the self-power supply starting voltage.
  • Adjustable resistor RW, Zener diode DW, filter capacitor C and adjustable PWM pulse generator with standard IC chip; BUCK buck converter is an output voltage lower than the input voltage, the output current is continuous current, input
  • the current is a pulsating single-tube non-isolated DC converter, which includes a power switch tube Q, a freewheeling power diode D, an inductor L, a storage filter capacitor Cf, a regulated reference step-down resistor R, and a convenient self-power supply starting voltage.
  • the regulating resistor RW is connected in series with a terminal PA+ and is also connected as an output terminal to the power switch Q of the lower-level Buck.
  • the regulated reference step-down resistor R is connected in series with the adjustable resistor RW for selecting the self-power supply starting voltage.
  • the b terminal of the tube DW is connected, and is connected to the b terminal of the energy storage filter capacitor Cf and the GND of the adjustable PWM IC standard chip, and is connected as an output terminal to the GND of the buck converter and the buck converter; the pre-start PWM generator
  • the generated pre-start pulse MF is connected to the input of Buck's power switch Q to drive the Buck to generate the output Vcc2 °, and also to drive the power controller R0 of the terminal and the drive power switch KG a and drive The inputs of the power controller are connected.
  • Vcc2 output is also used as the input terminal of the LM78 series buck module of the pre-processing voltage supply Vcc1; see Figure 9, the drive power controller is driven by the power supply switch KG, constant current source LM317, constant current limited sampling resistor R1, optocoupler GO, optocoupler input current limiting resistor RD, output pull-up resistor R0 and output pull-down resistor RKG; Vcc2 ° of the buck output is connected to the a terminal of the power supply power switch KG and is also connected to the optocoupler GO Output a terminal of the pull-up resistor R0, the output b terminal of the driving power switch KG is connected to the input terminal i of the constant current source circuit, and is connected to the a terminal of the filter capacitor CL1, the output terminal u of the constant current circuit, and the constant current limiting sampling resistor R1.
  • the OU terminal connected in series is connected to the adjustment terminal j of the constant current circuit while being connected to the output terminal of the constant current circuit, and is connected to the a terminal of the energy storage filter capacitor CL2.
  • the constant current source circuit includes the constant current source LM317 and the constant current limited sampling.
  • the driving power control signal DYKZ controlled from the logic unit is connected to pin 1 of the input terminal of the photocoupler GO, and the a terminal of the photocoupler GO input current limiting resistor RD is connected to the other input terminal 2 of the photocoupler GO, and the photoelectric coupling
  • the b of the GO input current limiting resistor RD is connected to the b terminal of the pull-down bias resistor RKG of the driving power supply power switch KG, and is connected to the b-side of the filter capacitor CL1, the storage filter capacitor CL2, and the reference CK terminal of the LM78 series circuit.
  • the specific working process is: when the power control (DYKZ) level of the GO input terminal of the optocoupler is '1' (high level), the 4 pin of the optocoupler GO output With the low-resistance state of pin 3, the drive power switch KG input turns on the drive power switch KG due to the pull-up bias resistor R0, so that Vcc2 has the drive voltage output (the drive power is turned on) to make the LM317 constant current.
  • the source enters the working state of the constant current output, and has a constant current Vcc2 output; when the power supply control (DYKZ) level of the GO input terminal of the optocoupler is '0' (low level) ), the 4-pin and 3-pin of the photocoupler GO output are in a high-resistance state, and the pull-down resistor RKG of the drive power switch KG is connected to GND, so that the a and b terminals of the drive power switch KG have a high resistance value.
  • the driving power switch KG is turned off, so that the Vcc2 has no driving voltage output (the driving power supply is turned off), so that the LM317 constant current source is in the Vcc2 output state without constant current.
  • the self-power supply power switch tubes Q and KG include but are not limited to MOSFETs, IGBTs, and the like.
  • the tracking tracking processor includes a light intensity screening processing module and a logic control unit, as shown in FIG. 6.
  • the logic control unit includes a logic total control processing module ZK. , 1 ° feature trigger module 1 ° TZ and 1 ° pulse generator module, angle light intensity sensor 6 (CG) and light intensity discrimination module A/D IC1 Electronic control signal connection, light intensity discrimination processing module A/D IC1 transmits the light intensity sensing characteristic value formed after the screening process to the master control processing module through the I/O port.
  • the total control processing module is given as the output of the control signal DYKZ of the power driver controller according to the light intensity sensing feature and the workflow of the system (logical control unit), and is also determined 1 °The characteristic working mode of the trigger module, 1 ° characteristic trigger module drives according to the working state of the 1 ° pulse generator to output an electric pulse width signal that deflects the geared motor 5 by 1 ° 1 ° pulse width ( 1 ° MK ), and 2-bit logic decision signal A , B ; 1 ° feature trigger module logic working state includes '1 ' state and set '0' state, set '1 'In the state, the total control processing module ZK controls the 1 ° pulse generator continuous output to make the geared motor deflect the electrical pulse width of 1 ° electric pulse, set to '0' state, the total control processing module control 1 °
  • the pulse generator outputs an electric pulse that deflects the geared motor by 1 ° every 4 minutes;
  • the tracking tracking processor is composed of analog, digital circuits and MCU microchips
  • the 1 ° motor driver includes the driver module IC2 and protection diodes D1, D2, D3, D4. See Figure 10 and Figure 11.
  • the pins A and B of the driver module IC2 are the input terminals of the 2-bit logic judgment bit respectively.
  • the 1 ° MK is the pulse for the 1 ° shaft deflection of the geared motor.
  • ° Generator pulse width input Vcc2 is the drive power input; Vcc1 is 1 ° motor driver logic circuit power supply; GND is the common ground (zero potential reference); OUT1, OUT2 is the output that drives the motor.
  • the a terminal of D1 and D3 is connected to the drive module Vcc2 after interconnection, and the self-service power generator Vcc2
  • the output terminals are connected, and the output terminals OUT1 of the motor driver module IC2 are connected to the a terminal of D2 and the b terminal of D1 as the drive output QD1 outer lead, motor driver module IC2
  • the output terminal OUT2 is connected to the a terminal of D4 and the b terminal of D3 as the drive output QD2 outer lead, 1 ° motor driver output QD1, QD2 They are connected to the external leads of the drive winding of the motor to the terminals MD1 and MD2 in the terminal box.
  • the diffusing effect causes the output voltage of the solar panel assembly on the uniaxial plane to rise as the sun rises, causing the self-service power generator output to generate a self-service voltage to the logic control unit of the tracking processor.
  • the 1 ° motor driver and the drive motor provide working power, that is, the motor is driven to correct the operation of the solar panel on the plane of the rotating shaft in an initial position of the chasing position perpendicular to the incident angle of the sunlight.
  • the main control processing module ZK sends out the power control signal DYKZ turns the drive power controller on and simultaneously sets the 1 ° characteristic trigger '1 'Initial operation for positioning the position of the axis.
  • the sun rising from the east makes the angle light intensity sensor on the east side stronger than the light intensity of the west side angle light intensity sensor, and the logic control unit controls 1 °
  • the pulse generator module continuously sends a 1 ° pulse signal to the 1 ° motor driver, and the 1 ° motor driver continuously drives the seat reducer to drive the shaft from west to east.
  • the continuous deflection mode of the interval is to return to the east sunrise direction until the west side angle light intensity sensor is stronger than the east side angle light intensity sensor, and the solar array plane vertical sun incident angle is slightly eastward.
  • the logic control unit sets the 1 ° characteristic trigger module to the '0' state, that is, the correction of the position of the rotary axis of the tracking of the system initialization is completed, after which the total control processing module ZK of the logic control unit has been set to 0.
  • '1 ° characteristic trigger control 1 ° pulse generator module enters every 4 minutes to send a 1 ° pulse to drive the motor to drive the shaft for 1 ° deflection tracking, considering every 4 minutes 1 ° Chasing operation drives the dynamic reliability and error reference of 1 °. Each time a 1 ° drive pulse is sent, it will automatically query whether it is less than three times (3 °). If it is not full, it can continue to do every 4 minutes.
  • the output of the drive if it is three times full, is once again initialized to track the positioning of the tracking position to ensure the tracking effect of the incident angle of the sun and the solar panel on the plane of the tracking device.
  • this method can also adapt to and cover the situation that the sun is covered and the sky is dark due to thunderstorms and sandstorms, and the device keeps track of the day. Once the sun has a certain intensity, the system will automatically recover the power.
  • the calibration is reset to the position of the rotation axis position tracking of the tracking tracking from the initialization, and then enters the normal working state, and the tracking system is repeated every other time.
  • the 4 minute interval mode sends a 1 ° chase operation drive pulse, and at every 3 After the drive pulse is used to perform an initial correction of the position of the tracking position, the drive is always stepped 1 ° every 4 minutes in the direction of the sun's intensity (from east to west along the rising sun). Tracking, Until the sun is nearly falling, causing the west side angle light intensity sensor output to be equal to or less than the east side angle light intensity sensor (this means that the west side of the sun is falling or dark) the total control processing module of the system logic control unit ZK The drive power controller will be disconnected, and the seat reducer will be prohibited from continuing to drive in the west direction.
  • the plane of the solar panel assembly is in the lateral westward position in the direction of the sun setting, and the system enters the nighttime sleep state until the After the sun rises in the early morning, the self-service voltage output and the initialization operation of the tracking device rotation position tracking position are generated again, and the return drive of the motor from the west to the east is completed, and the operation state of continuing the tracking of the sun is entered.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

La présente invention concerne un système de poursuite solaire pour un service automatique de production d'énergie photovoltaïque. Un ensemble panneau de cellules solaires (1) est installé sur un arbre rotatif (2) par le biais d'un support (4) et d'une plaque de connexion de support (16), l'arbre rotatif (2) est connecté à un arbre de sortie d'un réducteur de vitesse (5) du type à assise par le biais d'une bride axiale, le réducteur de vitesse (5) du type à assise est installé sur un support (7) par le biais d'une base (12) du réducteur de vitesse, un moteur d'entraînement (15) est raccordé au réducteur de vitesse (5) du type à assise par le biais d'un convertisseur d'entraînement (8) à vis sans fin et amène celui-ci à fonctionner, l'extrémité de sortie de l'énergie électrique de l'ensemble panneau de cellules solaires (1) est connectée à un système de production d'énergie inverseur et à un générateur de source d'énergie automatique, les plans perpendiculaires des côtés est et ouest d'un plan de l'ensemble panneau de cellules solaires (1) sont respectivement dotés d'un capteur (6) de l'intensité de lumière angulaire, l'extrémité de sortie de l'énergie électrique du générateur de source d'énergie automatique est respectivement connectée à un processeur de poursuite solaire et à un pilote de moteur à 1°, le moteur d'entraînement (15) est connecté au pilote de moteur à 1° par une commande électrique, et les capteurs (6) de l'intensité de lumière angulaire et le pilote de moteur à 1° sont connectés au processeur de poursuite solaire par une commande électrique logique. Le système peut résoudre efficacement les problèmes tels que l'instabilité de fonctionnement, la durée d'utilisation réduite, le coût élevé du système et le coût de fonctionnement élevé des dispositifs de poursuite solaire à adaptation automatique existants.
PCT/CN2012/074189 2012-03-27 2012-04-17 Système de poursuite solaire pour un service automatique de production d'énergie photovoltaïque WO2013143190A1 (fr)

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CN109274333B (zh) * 2018-10-31 2024-03-22 南京康尼电气技术有限公司 一种日光模拟装置
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NL2024854B1 (en) * 2019-11-26 2021-08-30 Solstice Holding B V Solar photovoltaic tracking system and use thereof
WO2021105162A3 (fr) * 2019-11-26 2021-07-08 Solstice Holding B.V. Système de poursuite photovoltaïque solaire et son utilisation
CN112448668A (zh) * 2020-12-01 2021-03-05 河南农业大学 一种可随太阳光照射方向自动改变角度的太阳能电池板
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