WO2011155877A1 - Panneau solaire - Google Patents

Panneau solaire Download PDF

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Publication number
WO2011155877A1
WO2011155877A1 PCT/SE2010/000155 SE2010000155W WO2011155877A1 WO 2011155877 A1 WO2011155877 A1 WO 2011155877A1 SE 2010000155 W SE2010000155 W SE 2010000155W WO 2011155877 A1 WO2011155877 A1 WO 2011155877A1
Authority
WO
WIPO (PCT)
Prior art keywords
cells
solar panel
solar
edge
situated
Prior art date
Application number
PCT/SE2010/000155
Other languages
English (en)
Inventor
Andreas Johansson
Original Assignee
Global Sun Engineering Sweden Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Sun Engineering Sweden Ab filed Critical Global Sun Engineering Sweden Ab
Priority to PCT/SE2010/000155 priority Critical patent/WO2011155877A1/fr
Publication of WO2011155877A1 publication Critical patent/WO2011155877A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • 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

  • This invention relates to a solar panel comprising a number of solar cells.
  • the invention also relates to a solar concentrator comprising at least one solar panel according to this invention.
  • Solar concentrators comprise reflective surfaces that concentrate the incident sunlight on to solar panels
  • the reflective surfaces generate an area of concentrated sunlight greater than the area of the solar panel, i.e. the reflective surfaces are "oversized" in relation to the area of the solar panel.
  • Solar cells can be connected in parallel or in series. Series connection is preferred as an arrangement of this kind results in lower system currents and higher voltage. Low currents lead to fewer transmission losses and high voltage facilitates the conversion from direct current to alternating current .
  • a first aim of this invention is to provide a solar panel of the type defined hereinabove, in which the solar cells incorporated into the solar panel are connected together in such a manner that a lower light intensity in the edge regions of the solar panel as a result of defects in the sun tracker function does not have an adverse effect on the efficiency of the solar panel.
  • the area of concentrated sunlight generated by the reflective surface therefore does not have to be "oversized" in relation to the area of the solar panel.
  • Fig. A shows a known solar panel with solar cells connected in series, the box indicated by the solid line symbolising the region of full light intensity incident upon the solar panel;
  • Fig. B shows the solar panel according to Fig. A, but with the region of full light intensity offset in relation to the position according to Fig. A;
  • Fig. 1 shows a first embodiment of a solar panel according to this invention
  • Fig. 2 shows a circuit diagram for solar cells provided on the solar panel according to Fig. 1;
  • Fig. 3 shows another embodiment of a solar panel according to this invention
  • Fig. 4 shows a circuit diagram for solar cells provided on the solar panel according to Fig. 3;
  • Fig. 5 shows a solar panel according to this invention in
  • Fig. 6 shows a solar panel according to this invention in
  • Figures A and B show a solar panel comprising solar cells C connected in series, wherein these solar cells C are symbolised by squares with shading extending diagonally upwards to the right (see the relevant symbol) .
  • the box R indicated by the solid line symbolises the area where the incident light has full intensity.
  • the box R indicated by the solid line is offset in relation to the solar cells C of the solar panel.
  • Fig. A shows an offset in the vertical direction
  • Fig. B shows an offset in the lateral direction.
  • the uppermost row of solar cells is not situated entirely within the box R and the box R passes right through this uppermost row of solar cells.
  • the solar cells situated furthest to the left are not situated entirely within the box R and the box R passes right through the row of solar cells situated furthest to the left.
  • Fig. 1 is a diagrammatic plan view of a solar panel according to this invention, wherein the solar panel is provided both with first solar cells 1 connected in series and with second solar cells 3 connected in parallel.
  • the solar cells 1 connected in series are designated by squares having shading extending diagonally upwards to the right.
  • the second solar cells 3 connected in parallel are symbolised by squares having shading extending diagonally upwards to the left.
  • the first and second solar cells 1 and 3 respectively have an identical area, i.e. the squares are the same size.
  • the second solar cells 3 situated around the edge portions of the solar panel are connected in parallel, while the first solar cells 1 situated to the inside of these second solar cells 3 are connected in series.
  • the solar cells 1 connected in series will be referred to
  • edge cells connected in parallel.
  • Fig. 1 shows the parallel connection between two edge cells 3, wherein one of these edge cells 3 is situated in an upper row of the solar panel, while the other of these edge cells 3 is situated in a lower row of the solar panel.
  • the edge cells 3 connected in parallel are situated in opposing rows of edge cells 3, the rows being parallel. This applies both to the edge cells 3 situated along the horizontal edges of the solar panel and to the edge cells 3 situated along the vertical edges of the solar panel. The reason for this will be
  • the edge strip containing the edge cells 3 has the width Bl and the relationship between the width Bl of the edge strip and the width B or height H of the solar panel is as follows: 0 ⁇ Bl ⁇ 0,1B/H.
  • Fig. 2 shows the circuit arrangement for the central cells 1 and the edge cells 3 of the solar panel according to Fig. 1.
  • the edge cells 3 connected in parallel in pairs e.g. one edge cell 3 from the uppermost row of the solar panel and one edge cell from the lowermost row of the solar panel, are connected together in series, i.e. a first pair of edge cells 3 connected in parallel is connected in series with a second pair of edge cells 3 connected in parallel, wherein the second pair of edge cells 3 connected in parallel is connected in series with a third pair of edge cells 3 connected in
  • Fig. 3 shows the parallel connection between two groups of edge cells 103, wherein one group of edge cells 103 is
  • the groups of second solar cells 103 connected in parallel are situated in opposing rows of solar cells 103 situated at the edge, the rows being parallel. This applies both to the edge cells 103 situated along the horizontal edges of the solar panel and to the edge cells 103 situated along the vertical edges of the solar panel. The reason for this will be explained hereinbelow. With respect to the width Bl of the edge strip in relation to the dimensions of the solar panel, reference should be made to the statements made
  • Fig. 4 shows the circuit arrangement for the central cells 101 and the edge cells 103 of the solar panel according to Fig. 3.
  • the edge cells 103 situated at the top are connected in series and the edge cells 103 situated at the bottom are also connected in series.
  • These two groups of edge cells 103 are connected in parallel, wherein each group of edge cells 103 connected in series can be regarded as a solar cell.
  • the two rows of edge cells 103 in the vertical direction H of the solar cell are
  • each group of edge cells can be regarded as a solar cell.
  • Fig. 4 shows how the groups of edge cells 103 connected in series are connected in parallel and how one of these groups connected in parallel is connected in series with a first central cell 101, which is in turn connected in series with the next central cell 101, etc..
  • FIGS 5 and 6 show how the special parallel connection of the edge cells 3 described hereinabove operates when the area of full light intensity does not cover all of the solar cells on the solar panel.
  • the area of full light intensity is thus symbolised by the box R indicated by the solid line.
  • Fig. 5 shows two edge cells 3 connected in parallel, wherein half of the area of these two edge cells 3 is situated inside the box R indicated by the solid line.
  • these two edge cells 3 can be regarded as a solar cell with an area that is the sum of the two half areas, i.e. a solar cell/edge cell with an area corresponding to the area of a central cell 1.
  • Fig. 6 shows how the box R is offset in relation to the position of the box R according to Fig. 5. Only approximately 20% of the left-hand edge cell 103 is thus situated inside the box R, while approximately 80% of the upper edge cell 3 is situated inside the box R. As a result of the fact that the edge cells 3 are connected in parallel, the sum of the areas of the edge cells 3 situated inside the box R can be regarded as a solar cell/edge cell with an area corresponding to that of a central cell 1.
  • edge cells 3 connected in parallel have a total area corresponding to the area of the central cells 1
  • both the edge cells 3 and the central cells 1 produce their full effect in both instances of
  • edge cells are interconnected in series (see Fig. 3 and circuit diagram according to Fig. 4), the edge cells 103 connected in series in Fig. 3, i.e. four at the top and four at the bottom, generate the same amount of energy as four central cells 101 connected in series.
  • the total illuminated area of these eight edge cells 103 then corresponds to the illuminated area of four central cells 101 connected in series 101.
  • edge cells 103 situated at the side can also be connected in series in a corresponding manner in order to form groups of edge cells 103 connected in series, the groups then being connected in parallel.
  • edge cells 3 the rows of solar cells situated furthest to the outside are referred to as edge cells 3; 103.
  • the cells referred to as edge cells may be formed by more than one row of solar cells around the circumference of the solar panel. It should be noted in this connection that the number of solar cells provided on the solar panel according to the embodiments shown in diagrammatic form is specified only by way of example.
  • any desired shape is in principle possible for the shape of the solar panel according to this invention in plan view, wherein rectangular, circular or oval can be mentioned by way of non-limiting examples.
  • a parameter relation corresponding to that specified hereinabove applies to the width of the edge portions provided with edge cells, although the width B and the height H are replaced by the relevant dimensions of the shape in question.
  • the parameter relation 0 ⁇ Bl ⁇ 0,1D thus applies in the case of a circular shape, where D is the diameter of the circle.
  • these solar cells 1, 3; 101, 103 have a square shape in the embodiments described
  • the solar cells may also be conceivable for the solar cells to have a shape other than square, wherein rectangular, hexagonal and triangular can be mentioned by way of non-limiting examples. It should be mentioned in this connection that it is also possible for solar cells on the same solar panel to have different shapes.
  • the edge cells may have an area that is greater than the area of the central cells. It should be noted in this connection that the area of an edge cell should also be understood to be the sum of parts of edge cells as shown according to Figures 5 and 6.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un panneau solaire comprenant un nombre de cellules solaires (1, 3 ; 101, 103), toutes les cellules solaires (1, 3 ; 101, 103) ayant de préférence une aire identique. Elle concerne aussi un concentrateur solaire comprenant au moins un panneau solaire selon l'invention. Le panneau solaire selon la présente invention est caractérisé en ce que des cellules de bordure (3 ; 103) situées autour de la circonférence du panneau solaire sont connectées en parallèle et que des cellules centrales (1 ; 101) situées à l'intérieur des cellules de bordure (3 ; 103) sont connectées en série.
PCT/SE2010/000155 2010-06-08 2010-06-08 Panneau solaire WO2011155877A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2010/000155 WO2011155877A1 (fr) 2010-06-08 2010-06-08 Panneau solaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2010/000155 WO2011155877A1 (fr) 2010-06-08 2010-06-08 Panneau solaire

Publications (1)

Publication Number Publication Date
WO2011155877A1 true WO2011155877A1 (fr) 2011-12-15

Family

ID=45098291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2010/000155 WO2011155877A1 (fr) 2010-06-08 2010-06-08 Panneau solaire

Country Status (1)

Country Link
WO (1) WO2011155877A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015012116A (ja) * 2013-06-28 2015-01-19 株式会社明電舎 太陽光発電モジュールの直並列組合わせ決定方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513167A (en) * 1982-04-27 1985-04-23 The Australian National University Arrays of polarized energy-generating elements
JP2005244046A (ja) * 2004-02-27 2005-09-08 Fuji Electric Holdings Co Ltd 太陽電池モジュール及び太陽電池モジュールの製造方法
EP2053661A1 (fr) * 2006-07-31 2009-04-29 Sanyo Electric Co., Ltd. Module de cellules solaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513167A (en) * 1982-04-27 1985-04-23 The Australian National University Arrays of polarized energy-generating elements
JP2005244046A (ja) * 2004-02-27 2005-09-08 Fuji Electric Holdings Co Ltd 太陽電池モジュール及び太陽電池モジュールの製造方法
EP2053661A1 (fr) * 2006-07-31 2009-04-29 Sanyo Electric Co., Ltd. Module de cellules solaires

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GAUTAM, N.K. ET AL.: "Reliability evaluation of solar photovoltaic arrays", SOLAR ENERGY, vol. 72, no. 2, February 2002 (2002-02-01), pages 129 - 141 *
NGUYEN D. ET AL.: "A reconfigurable solar photovoltaic array under shadow conditions", APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, 24 February 2008 (2008-02-24) - 28 February 2008 (2008-02-28), AUSTIN, TEXAS, USA, pages 980 - 986 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015012116A (ja) * 2013-06-28 2015-01-19 株式会社明電舎 太陽光発電モジュールの直並列組合わせ決定方法

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