EP2580787A2 - Agencement d'un générateur photovoltaïque - Google Patents

Agencement d'un générateur photovoltaïque

Info

Publication number
EP2580787A2
EP2580787A2 EP11805749.6A EP11805749A EP2580787A2 EP 2580787 A2 EP2580787 A2 EP 2580787A2 EP 11805749 A EP11805749 A EP 11805749A EP 2580787 A2 EP2580787 A2 EP 2580787A2
Authority
EP
European Patent Office
Prior art keywords
profiles
arrangement according
support
insulated
modules
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11805749.6A
Other languages
German (de)
English (en)
Inventor
Hans Urban
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schletter GmbH
Original Assignee
Schletter GmbH
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 Schletter GmbH filed Critical Schletter GmbH
Publication of EP2580787A2 publication Critical patent/EP2580787A2/fr
Withdrawn legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/30—Arrangement of stationary mountings or supports for solar heat collector modules using elongate rigid mounting elements extending substantially along the supporting surface, e.g. for covering buildings with solar heat collectors
    • 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
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • 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
    • 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 an arrangement of a PV generator, in particular on an open space.
  • a typical PV generator has a plurality of electrically interconnected PV modules.
  • Series PV modules are referred to as strings.
  • a string usually consists of about 10 to 20 PV modules.
  • PV modules generate direct current.
  • higher-level power grids are usually based on alternating current. Therefore, to inject DC power from PV modules into a higher-level power grid, the DC power needs to be converted to AC, which requires inverters.
  • Each string of a PV array is connected to an inverter via a DC line, with multiple strings connected to a common inverter.
  • the transmission of direct current of a string to an inverter does not lead to negligible conduction losses. To minimize such line losses, it is common to provide large cable cross-sections of copper. In addition, to keep the length of the DC lines short, the inverters should be installed as close as possible to the strings.
  • the AC power lines following the inverters are usually laid in trenches or cable ducts for protection against weather and other influences.
  • PV modules are usually mounted on support profiles of support structures. Most of the PV modules of one or more strings are arranged together on such a support structure.
  • CONFIRMATION COPY WO 2009/101096 discloses a typical PV generator with a string and an inverter, which are connected to one another by means of a conventional electrical line.
  • WO 2004/017424 A2 discloses a fastening device for PV modules with profile strips in which busbars are integrated.
  • the object of the invention is to minimize the number of inverters or at least the cost of DC cabling for large-area PV generators with many strings.
  • the object of the invention is achieved with the arrangement of a PV generator specified in claim 1.
  • the arrangement accordingly has support structures arranged in a topological row, wherein each of the support structures has at least two support profiles arranged next to one another for supporting a plurality of PV modules. It is characteristic that in each of at least two successive of the support structures of at least one of the support profiles is a metal and insulated against a ground potential hollow profile or contains such a fixed. It is also envisaged that an insulated hollow profile of each of the at least two successive support structures is associated with a first group and the isolated hollow sections of the first group are connected in series and thereby together form a first main electrical conductor.
  • the insulated hollow sections can act as an electrical conductor on the one hand and exercise a supporting function on the other hand by these are the support profiles for the PV modules or are contained in these firmly and their carrying capacity can complement this advantageous.
  • the cross-section of the insulated hollow profile can be large compared to conventional pliable DC cables.
  • a low-loss electrical conductor is available, which does not have to be installed separately and can be advantageously used as a low-loss DC cabling to an inverter.
  • inverters can be remotely mounted and grouped together to provide a large area PV generator significantly fewer, more powerful inverters can be operated. With little central inverters, the costs for trenches and cable ducts are also reduced.
  • At least one string of PV modules connected in series with a first connection pole, in particular its positive pole, is connected to the first electrical main conductor.
  • the first main electrical conductor is used as intended to replace a DC cabling.
  • several strings of PV modules connected in series with first connection poles are connected in parallel to the first main electrical conductor.
  • the first main electrical conductor thereby acts advantageously as a DC bus.
  • At least one further of the support profiles is another metal hollow profile insulated from a ground potential, or contains such a fixed one. It is essential that such another insulated hollow profile from each of the at least two successive support structures of a second group is assigned, and the isolated hollow profiles of the second group are connected in series and dadruch together form a second main electrical conductor.
  • the second main electrical conductor can be advantageously used as a replacement for a second wire of a double-core DC cabling to an inverter.
  • the second main electrical conductor can be connected to a ground potential, in particular if it is composed of non-insulated support profiles as described above.
  • the at least one string is preferably connected to a second terminal pole, in particular its negative terminal connected to the second electrical main conductor. in the If there are more strings, these can be connected in parallel to the second electrical main conductor with second connecting poles, in particular their negative poles.
  • the at least one string or the plurality of strings with a second Renpo! to connect to the ground potential, in particular the ground potential.
  • the isolated hollow profile of the first group with respect to the row axis on the right and the insulated hollow profile of the second group in this regard can be arranged on the left and this orientation in the next support structure exactly reversed, and so on. In this way, an insensitive to lightning strikes twisted bifilar line is formed.
  • the insulated hollow profiles of a group are electrically connected to each other with cables and / or substantially in alignment with rigid connecting elements.
  • the cables can be laid particularly flexible, especially if the insulated hollow profiles are arranged exchanged successively.
  • Rigid fasteners can be a cost effective and easy to install alternative to this.
  • the cables and / or the rigid connecting elements are connected to the longitudinal ends of the insulated hollow profiles.
  • the insulated hollow profiles are preferably continuous between their longitudinal ends, that is to say essentially over the entire length, and all around, that is to say completely insulated in the circumferential direction against the ground potential. This may prevent other protective measures such as fences and high voltage warnings.
  • the insulated hollow sections may have a closed hollow cross-section.
  • the insulated hollow profiles by means of insulator center! taken in their associated support profiles and held there in all directions form-fitting transversely to the support profiles.
  • the material cross section of the inner hollow profiles can be made very large, which is both electrically as well as structurally beneficial.
  • these support profiles may each have an outer hollow profile, in which the insulated hollow profiles are respectively received by the insulating means and held there in a form-fitting manner in all directions transversely to the support profiles.
  • the carrying capacity of the outer and inner hollow profile can complement each other here.
  • the outer hollow profile can therefore be made less viable, as the other support profiles that do not contain an insulated hollow profile.
  • the PV modules can be connected individually or together in strings at any point along the support profile to an insulated hollow profile.
  • the Isolartorsch and / or the outer hollow profile can be penetrated transversely, for example by means of a bore or other local recess.
  • the PV modules are connected to the longitudinal ends of the insulated hollow sections or to the connections between the insulated hollow sections.
  • those support profiles which are insulated hollow profiles or contain those which are the most closely spaced in the support structures.
  • the connections can be kept short.
  • At least those supporting profiles which contain insulated hollow profiles, metal on the outside and be electrically connected to the ground potential, in particular the ground potential,
  • the strings are connected to the longitudinal ends of the insulated hollow sections and / or to connections between longitudinal ends of the insulated hollow sections. In this way, lateral bores or the like for producing electrical contacts can be avoided when contained in support profiles insulated hollow profiles. It is particularly preferred if one or more PV modules of the strings are supported by those support profiles which are or contain insulated hollow profiles. As a result, the number of conventional support profiles or those that do not contain insulated hollow profiles can be reduced.
  • the support profiles have holding means for the PV modules, in particular undercut fastening channels for a clamping attachment of the edges of the PV modules and / or receiving tables for inserting the edges of the PV modules.
  • Support profiles with such receiving tables are also known by the term Einlegprofile.
  • the first electrical main conductor can be connected to a first connection pole, in particular a positive pole of an inverter.
  • a second electrical main conductor is provided, it is preferably connected to a second terminal pole, in particular a negative pole of the inverter.
  • the second terminal pole of the inverter is additionally or alternatively connected to the ground potential, in particular the ground potential.
  • the inverter is arranged at one end of the topological row. As a result, an AC line leading from the outside to the inverter and possibly a cable trench for this purpose can be shortened.
  • a common and centrally arranged inverter is provided, to which the plurality of first electrical main conductors and optionally the plurality of second electrical main conductors are connected in common.
  • Fig. 1 is a diagram of an arrangement of a PV generator with three support structures in a topological series
  • FIG. 2 is a diagram of two main conductors of the arrangement according to FIG. 1
  • Fig. 3 is a side view of a conventional support profile of the support structures according to
  • FIG. 4 shows a side view of a carrier profile with an insulated hollow profile contained therein from the carrier structures according to FIG. 1
  • FIG. 5 is a side view of individual parts of the support profile of FIG .. 4
  • Fig. 6 is a diagram of an arrangement of a PV generator with several rows of
  • Support structures according to FIG. 1 topologically arranged in a star shape
  • Fig. 7 is a diagram of another arrangement of another PV generator with three
  • Fig. 1 shows a schematic of an arrangement of a PV generator.
  • the arrangement comprises three support structures 1, 2, 3 arranged in a topological row 1, 2, 3, wherein each of the support structures 1, 2, 3 has four metal support profiles 7, 4, 5, 6 arranged side by side for supporting a plurality of PV modules 1.3 , 2.3, 3.3.
  • an insulated hollow profile 1.1, 2.1, 3.1 from each of the support structures 1, 2, 3 is assigned to a first group and the insulated hollow sections 1.1,
  • the last supporting structure 1 only with conventional supporting profiles, so that only the two successive supporting structures 2 and 3 can be incorporated. It can also be seen that the insulated hollow sections 1.1, 2.1, 3.1 of the first group and the insulated hollow sections 1.2, 2.2, 3.2 of the second group are alternately interchanged in each support structure, as in a twisted pair cable to minimize interference by induction.
  • the insulated hollow sections 1.1, 2.1, 3.1 of the first group as well as the insulated hollow sections 1.2, 2.2, 3.2 of the second group are electrically connected to each other with cables 13 to form the first and second main electrical conductors L1 and L2.
  • the cables 13 are electrically connected to the longitudinal ends of the insulated hollow sections and intersect because of the aforementioned alternately exchanged arrangement of the insulated hollow sections 1.1, 2.1, 3.1, 1.2, 2.2, 3.2.
  • Fig. 3 shows the support profile 6 and 7, which has a conventional design without insulated hollow profile.
  • the hollow section 4 and 5, however, is constructed with three shells. It has a metal, outer hollow profile 22, in which the metal insulated hollow profile 1,1, 2.1, 3.1, 1.2, 2.2 and 3.2 taken by means of an insulating means 21 and held in all directions transversely to the support section 4 and 5 positively is.
  • the insulator means 21 as the outer hollow profile 22 and the insulated hollow profile 1.1, 2.1, 3.1, 1.2, 2.2 and 3.2 also formed as a hollow profile with a closed hollow cross-section. It is essential that the insulated hollow profile 1.1, 2.1, 3.1, 1.2, 2.2 or 3.2 is insulated between its longitudinal ends substantially over its entire length and all around against the ground potential 15.
  • FIGS. 3 and 4 It can also be seen in FIGS. 3 and 4 that the supporting profiles 7, 4, 5, 6 have undercut fastening channels 20 for an ordinary clamping fastening of the edges of the PV modules 1.3, 2.3, 3.3. Furthermore, it can be seen from FIGS. 3 and 4 that both the conventional support profiles 6, 7 and the support profiles 4, 5 or the outer hollow profiles are electrically connected to the ground potential 15.
  • each support structure is connected in series and accordingly form three strings 1.4, 2.4, 3.4.
  • strings need not necessarily be arranged on each one of the support structures. It is also conceivable, in particular, for the strings to be able to overlap over a plurality of support structures, or for a support structure to carry a plurality of strings. It is essential that the strings 1.4, 2.4, 3.4 with their plus terminal poles are connected in parallel to the first main electrical conductor L1 and with their negative terminal poles parallel to the second main electrical conductor L2.
  • the connection of the strings 1.4, 2.4, 3.4 is provided at the longitudinal ends of the insulated hollow profiles. Alternatively, the connection can be made to the cables 13. Also conceivable is a connection at arbitrary points along the support profiles at penetration points transversely through the outer hollow profiles and the insulator means directly through to the insulated hollow profile.
  • the PV modules 1.3, 2.3, 3.3 of the strings 1.4, 2.4, 3.4 are each supported on one side by the support profiles 4, 5 and on the other side by the conventional support profiles 6, 7.
  • strings 1.4, 2.4, 3.4 itself or its wiring can be laid differently than shown in order to avoid large-area conductor loops.
  • the first main electrical conductor L1 is connected to a positive connection pole 17 and the second main electrical conductor L2 is connected to the negative connection pole 18 of an inverter 14.
  • the inverter 14 is located at the right in the drawing end of the topological series 1, 2, 3.
  • FIG. 6 an arrangement can be seen, which consists of four topologically star-shaped arrangements of FIG. 1, wherein instead of four individual inverters, a common inverter 14 'is provided. At the common inverter 14 ', the four first main electric conductors L1' and the four second main electric conductors L2 'are commonly connected. It is understood that the topological series can continue to lead to the left and right drawing edges. An alternating current line 19 leads from the inverter 14 'to an overarching power network not shown.
  • Fig. 7 shows a further arrangement with three arranged in a topological series support structures 1 ', 2', 3 ', on which PV modules 1 .3, 2.3, 3.3 are arranged.
  • the PV modules 1.3, 2.3, 3.3 are connected in series to strings as before.
  • a first group of insulated hollow sections 1.1, 2.1, 3.1 which are associated with the supporting profiles 5 and which are connected in series forming a first main electrical conductor L1 "An essential difference from the arrangement according to FIG. a second electrical main conductor L2 "is formed by means of the conventional support profiles 6 connected in series.
  • the support profiles 6 are to metals and connected at their longitudinal ends with cable 13 'together.
  • the support profiles 6 are connected to the ground potential 15 for safety reasons.
  • the strings 1.4, 2.4, 3.4 are connected in parallel with their positive terminal poles to the main electrical conductor L1 "and with their negative terminal poles parallel to the second electrical main conductor L2".
  • the minus terminal pole 18 of the inverter 14 ' is connected to ground potential 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulated Conductors (AREA)
  • Elimination Of Static Electricity (AREA)
  • Insulators (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

L'invention concerne l'agencement d'un générateur photovoltaïque (PV), comprenant plusieurs structures de support (1, 2, 3) disposées en une rangée topologique (1, 2, 3). Chacune des structures de support (1, 2, 3) comporte au moins deux profilés de support (7, 4, 5, 6) disposés côte à côte, destinés à soutenir plusieurs modules PV (1.3, 2.3, 3.3). L'invention vise à réduire au minimum, pour des générateurs PV de grande surface présentant un grand nombre de chaînes, le nombre d'onduleurs ou du moins la complexité du câblage à courant continu. A cet effet, dans chacune d'au moins deux structures de support (1, 2, 3) consécutives, au moins un des profilés de support (4, 5) est un profilé creux (1.1, 2.1, 3.1) métallique, isolé vis-à-vis d'un potentiel de masse (15) ou contient un tel profilé. Un autre aspect important est qu'un profilé creux (1.1, 2.1, 3.1) isolé provenant de chacune des deux structures de support (1, 2, 3) consécutives ou plus est associé à un premier groupe (1.1, 2.1, 3.1), et que les profilés creux (1.1, 2.1, 3.1) isolés du premier groupe (1.1, 2.1, 3.1) sont montés en série et forment ensemble un premier conducteur électrique (L1) principal.
EP11805749.6A 2010-06-09 2011-06-09 Agencement d'un générateur photovoltaïque Withdrawn EP2580787A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010023217A DE102010023217A1 (de) 2010-06-09 2010-06-09 Anordnung eines PV-Generators
PCT/DE2011/001338 WO2012010132A2 (fr) 2010-06-09 2011-06-09 Agencement d'un générateur photovoltaïque

Publications (1)

Publication Number Publication Date
EP2580787A2 true EP2580787A2 (fr) 2013-04-17

Family

ID=45019813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11805749.6A Withdrawn EP2580787A2 (fr) 2010-06-09 2011-06-09 Agencement d'un générateur photovoltaïque

Country Status (3)

Country Link
EP (1) EP2580787A2 (fr)
DE (2) DE102010023217A1 (fr)
WO (1) WO2012010132A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8841564B1 (en) 2013-04-29 2014-09-23 R+L Carriers, Inc. Weigh scaled vehicle calibration systems and methods
KR20150020957A (ko) * 2013-08-19 2015-02-27 삼성에스디아이 주식회사 광전모듈
DE102015011644B3 (de) * 2015-09-11 2017-01-26 Hanwha Q Cells Gmbh PV-Modul
US10505492B2 (en) 2016-02-12 2019-12-10 Solarcity Corporation Building integrated photovoltaic roofing assemblies and associated systems and methods

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Publication number Priority date Publication date Assignee Title
BE898560A (fr) * 1983-12-27 1984-06-27 Acec Supports pour panneaux solaires.
AU2003285631A1 (en) 2002-07-26 2004-03-03 W.B.T.-S.A. World Business Technology Fixing device for photovoltaic modules
DE102006009412A1 (de) * 2006-02-23 2007-08-30 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Solarmodulsystem mit Tragstruktur
FR2903714A1 (fr) * 2006-07-12 2008-01-18 Uriel Moch Panneau feuillete, procede de fabrication d'un tel panneau et paroi comprenant ce panneau.
DE102008008503A1 (de) 2008-02-11 2009-08-20 Siemens Aktiengesellschaft PV-Teilgenerator-Anschlusskasten, PV-Generator-Anschlusskasten und PV-Wechselrichter für eine PV-Anlage sowie PV-Anlage
DE102008018422A1 (de) 2008-04-10 2009-10-15 Leichtmetallbau Schletter Gmbh Montagesystem für Ständer für Photovoltaik-Freiflächenanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012010132A2 *

Also Published As

Publication number Publication date
DE102010023217A1 (de) 2011-12-15
WO2012010132A2 (fr) 2012-01-26
WO2012010132A3 (fr) 2012-10-18
DE112011100028A5 (de) 2012-06-06

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