CN202231640U - Novel dual freedom mechanical tracking solar power generation system - Google Patents

Novel dual freedom mechanical tracking solar power generation system Download PDF

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Publication number
CN202231640U
CN202231640U CN2011202879509U CN201120287950U CN202231640U CN 202231640 U CN202231640 U CN 202231640U CN 2011202879509 U CN2011202879509 U CN 2011202879509U CN 201120287950 U CN201120287950 U CN 201120287950U CN 202231640 U CN202231640 U CN 202231640U
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CN
China
Prior art keywords
sun
photovoltaic
shaft
axle
hinged
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Expired - Fee Related
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CN2011202879509U
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Chinese (zh)
Inventor
王跃进
刘利国
钱瑜
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Jiangnan University
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Jiangnan University
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Priority to CN2011202879509U priority Critical patent/CN202231640U/en
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Publication of CN202231640U publication Critical patent/CN202231640U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

A novel two-degree-of-freedom mechanical tracking solar power generation system can be used for an independent photovoltaic system, a grid connected photovoltaic system and a mixed photovoltaic system. A photovoltaic plate is fastened with a daily shaft and rotates along with the daily shaft. A worm gear is bonded with the shaft end of the daily shaft. A worm for driving the worm gear to rotate is driven by a separate direct current motor controlled by a PLC. Therefore, the photovoltaic plate is driven to rotate from east to west and the rotation angle speed is synchronous with apparent motion of the sun, thereby tracking east and west components of the apparent motion of the sun. A bearing support on the two ends of the daily shaft is disposed on a main beam. Two hinged bearers are disposed under the main beam. The front hinged bearer is hinged on a front base bearer via a season shaft. A spiral push rod is connected between the rear hinged bearer and a rear base bearer. The rotary movement of the motor is converted by the spiral push rod to the axial movement of a screw. Therefore, the length of the whole push rod is changed and the entire photovoltaic plate is pushed to rotate around the season shaft, thereby tracking north and south components of the apparent motion of the sun. Two degrees of freedom are well combined, such that the photovoltaic plate is perpendicular to incident sunlight the whole year and the purpose of sun tracking is realized.

Description

New type double degree of freedom mechanically tracking solar power system
Affiliated technical field
The described double freedom mechanically tracking of the utility model solar power system is because of the development and utilization field of regenerative resource.
Solar energy is a kind of regenerative resource, and is almost inexhaustible, utilizes the photovoltaic power generation technology environmental protection of solar power generation, has a extensive future.The ratio escheat of the installed capacity of current photovoltaic generating system and energy output is lower, and the development space of photovoltaic power generation technology is huge.The energy output of world energy sources tissue (IEA) prediction the year two thousand twenty photovoltaic generation accounts for 1% of gross generation, and the year two thousand forty rises to about 20%; According to National Development and Reform Committee " the medium-term and long-term development plan of regenerative resource ", China proposes 2010, and the photovoltaic generation total capacity reaches 300MW, reaches 1800MW to the year two thousand twenty.The development of domestic photovoltaic generation is quickened just comprehensively, relevant expert prediction, from 2010 to the year two thousand twenty, the photovoltaic generation capacity of China is expected to reach respectively 2GW and 10GW.The development and utilization of regenerative resource has become the main contents of energy development of future generation, and photovoltaic generation has incomparable advantage, is the desirable energy that satisfies the Future Society demand.
Background technology
Solar power plant, vertical if its photovoltaic panel can remain with sunlight, just can in limited usable floor area, collect more solar energy.Theory analysis shows, the tracking of the sun and non-tracking, and the acceptance rate of energy differs 37.7%.At present, have a lot of photovoltaic battery panels to adopt fixed installation, solar energy utilization rate is not high.This double freedom mechanically tracking solar power system designs in order to improve this situation just.This system is driven by the twin shaft that individual motor is housed, and is called " day axle " and " season axle " respectively, and day axle begins work at sunrise to be every day work period, and sunset and ceasing, the rotation of day axle drive photovoltaic panel and aims at the sun and rise to the overall process that the west falls from east; Season, axle then was the work period with the season, in order to accomplish the sun travelled to and fro between the tracking of moving between the tropic of north and south.
Summary of the invention
In order to overcome most of device of solar generating because of fixed installation, receive the not high problem of solar radiation energy, the design's emphasis is conceived to photovoltaic panel day is followed the tracks of.
As everyone knows; Because the existence of ecliptic obliquity; Just make the earth in the revolution process, move as the anniversary between the tropic of north and south the position of subsolar point, thereby produced the variation of height of the sun at noon, the natural phenomena such as variation and four seasons replacement of length round the clock.Observe the apparent motion that sun's motion is called the sun on the ground, it had both contained the thing component, contained the north and south component again.Therefore, follow the tracks of the device of the sun, must have two degrees of freedom, respectively the thing component and the north and south component of apparent motion of the sun are followed the tracks of.The apparent motion track according to specific time and site of the sun and different, among the design, the rotation of day axle is conceived to change round the clock, tracking be the thing component of apparent motion of the sun; Season axle, then be conceived to seasonal variations, follow the tracks of the north and south component of apparent motion of the sun;
Photovoltaic panel is fastening and rotate with axle with day axle; Worm gear links with a day axle axle head key; Drive of the direct current machine driving of the worm screw of worm gear rotation by independent PLC control; Thereby drive photovoltaic panel from the east orientation west to rotation, rotational angular velocity and apparent motion of the sun are synchronous, realize the thing component of tracking apparent motion of the sun;
North and south component for apparent motion of the sun; Show as the location sun altitude with changing season, the geographic latitude of it and this area, factors such as the latitude of subsolar point are relevant; The direction of altitude of the sun more approaching vertical (90 °), the radiant energy that obtains in the unit are is also many more.In order to realize this tracking, the technical scheme that the design adopts is, the support of bearing at axle two ends is installed on the girder with day, and the girder north-south tilts, and two pivoting supports are arranged below, and preceding pivoting support is before axle is hinged on through season on the base support; Between back pivoting support and the back base support; Connect a spiral handspike, spiral handspike changes into moving axially of screw rod with rotatablely moving of motor, thereby changes the length of whole push rod; Promote photovoltaic panel around season axle rotation, thereby followed the tracks of the north and south component of apparent motion of the sun.At dusk, photovoltaic battery panel goes to extreme position westwards, no longer follows the tracks of the sun, and control system is reset to the original position in morning with it simultaneously, restarts a new cycle until second day.Concrete structure see Figure of description (Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6).
The beneficial effect of the utility model is with the mechanical structure of double freedom, both to have realized the east-west direction of apparent motion of the sun is followed the tracks of; Realized the North and South direction tracking again; Simple in structure, compare with the fixed type photovoltaic cell panel, obviously improved the acceptance rate of solar energy.
Description of drawings
Fig. 1 worm gear front view
Fig. 2 worm gear left view
Fig. 3 worm screw
Fig. 4 girder
The front view of Fig. 5 new type double degree of freedom mechanically tracking solar power system installation diagram.
Base supports before 1. among the figure, 2. season axle, 3. girder, 4. worm screw, 5. worm gear, 6. day axle; 7. front-end bearing pedestal, 8. photovoltaic panel, 9. rear bearing block, 10. pivoting support, 11. worm-and-wheel gears; 12. belt, 13. nuts, 14. spiral handspike motors, 15. screw rods, 16. back base supports
The left view of Fig. 6 new type double degree of freedom mechanically tracking solar power system installation diagram.
Embodiment
Embodiment is as shown in Figure 5.
Step 1: whole new type double degree of freedom mechanically tracking solar power system is installed on the firm reinforced concrete foundation; Earlier with the photovoltaic panel frame fixation on day axle 6; With day the axle two ends put antero posterior axis bearing 7 and 9, and the diaxon bearing is fixed on the girder 3.Day the axle 6 front ends install worm gear 5, with worm gear 5 engaged worm 4 and motor drivers; With girder down in face of pivoting support and preceding base support 1 to pass through season axle 2 hinged; 11,12,13,14, the 15 spiral handspike two ends formed are hinged on respectively below the girder on the back pivoting support 10 and back base support 16, accomplish and install.
Step 2: in the time of The sun came up, photovoltaic panel is in original position, towards sunlight, and about 75 ° of plate face and ground level angle; The electric motor starting of PLC control, through worm screw 4--worm gear 5,6 beginnings of drive day axle are slowly followed the sun and are rotated, and rotational angular is adjusted to apparent motion of the sun synchronous.When the sun set, photovoltaic battery panel went to extreme position westwards, the plate face oppositely with 75 ° of ground level angles; Control system makes photovoltaic panel stop the tracking of the sun; Motor is reversed fast, photovoltaic panel is gone back to the original position in morning, and stop to second day.Carry out when the adjustment of North and South direction needs at noon, crawl spiral handspike motor 14 is through belt 12-worm-and-wheel gear 11; Drive screw rod 15 and rotate, owing to nut 13 and overcoat are fixed, so; The rotation of screw rod will make it move axially along nut; Whole spiral handspike will extend (reverse time shorten), promote whole photovoltaic panel around season axle 2 rotate, vertical until it with sunray.When changing according to the season, need adjustment once more.

Claims (1)

1. new type double degree of freedom mechanically tracking solar power system, photovoltaic panel is fastening with day axle, drives its rotation by worm-and-wheel gear; Day the axle two ends the support of bearing be installed on the girder; Two pivoting supports are arranged under the girder, and preceding pivoting support is before axle is hinged on through season on the base support, back pivoting support and afterwards between the base support; Connect a spiral handspike; It is characterized in that: the direct current machine by PLC control drives a day axle through worm-and-wheel gear, and photovoltaic panel is rotated from the east orientation west, follows the tracks of the thing component of apparent motion of the sun; Spiral handspike then changes into rotatablely moving of another motor and moves axially, and has changed the length of push rod, makes photovoltaic panel around season axle rotation, thereby has followed the tracks of the north and south component of apparent motion of the sun.
CN2011202879509U 2011-08-05 2011-08-05 Novel dual freedom mechanical tracking solar power generation system Expired - Fee Related CN202231640U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202879509U CN202231640U (en) 2011-08-05 2011-08-05 Novel dual freedom mechanical tracking solar power generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202879509U CN202231640U (en) 2011-08-05 2011-08-05 Novel dual freedom mechanical tracking solar power generation system

Publications (1)

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CN202231640U true CN202231640U (en) 2012-05-23

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CN2011202879509U Expired - Fee Related CN202231640U (en) 2011-08-05 2011-08-05 Novel dual freedom mechanical tracking solar power generation system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853669A (en) * 2020-07-13 2020-10-30 江苏弘德科技发展有限公司 Solar street lamp photovoltaic board turns to device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853669A (en) * 2020-07-13 2020-10-30 江苏弘德科技发展有限公司 Solar street lamp photovoltaic board turns to device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120523

Termination date: 20130805

C17 Cessation of patent right