EP2587587A1 - Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas - Google Patents

Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas Download PDF

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Publication number
EP2587587A1
EP2587587A1 EP11425265.3A EP11425265A EP2587587A1 EP 2587587 A1 EP2587587 A1 EP 2587587A1 EP 11425265 A EP11425265 A EP 11425265A EP 2587587 A1 EP2587587 A1 EP 2587587A1
Authority
EP
European Patent Office
Prior art keywords
solar
rectennas
receiver
concentration system
energy
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Withdrawn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
EP11425265.3A
Other languages
English (en)
French (fr)
Inventor
Marco MILANESE
Arturo De Risi
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.)
Universita del Salento
Original Assignee
Universita del Salento
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 Universita del Salento filed Critical Universita del Salento
Priority to EP11425265.3A priority Critical patent/EP2587587A1/de
Priority to PCT/IB2012/055920 priority patent/WO2013061299A2/en
Publication of EP2587587A1 publication Critical patent/EP2587587A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/248—Supports; Mounting means by structural association with other equipment or articles with receiving set provided with an AC/DC converting device, e.g. rectennas

Definitions

  • the present invention relates to a new nanorectenna based device for high efficiency conversion of sunlight in electric energy to be used for example in solar concentrators.
  • the direct conversion of solar energy in electricity usually occurs by using photovoltaic cells.
  • photovoltaic cells At the state of the art the photovoltaic effect is quite known and depends essentially on photons interaction, the energy being equal or greater than the energy of the photovoltaic material range.
  • rectennas for solar energy conversion is based on the fact that the solar radiation is actually an electromagnetic wave. In other words, it can be described as a series of electric and magnetic waves propagating from Sun to Earth.
  • Using rectennas for transmitting and receiving power and signals in the microwave range is a mature technology today.
  • the idea of using a rectenna for converting solar energy was first proposed in 1973 by Dr. R. Bayley, but only recently it has been re-examined for the remarkable progress in the nanotechnologies, which make possible the design of structures with dimensions in the order of nanometers. Said idea was formulated also by Gustafson and Billman in 1974. After, in 1984 Brown presented a critical study on the state of the art of rectennas in the microwave spectral range. Most of the first works was carried out using microwaves at frequency 2,45 GHz.
  • the traditional photovoltaic cell has still many disadvantages, among which the low efficiency in conversion from solar to electric energy, at the state of the art, is between 20% for single cell and 30% for multi-junction cells. Therefore, rectennas can represent the best alternative with respect to classic photovoltaic cells to convert solar radiation energy.
  • aim of the present invention is a solar concentration system comprising an optical body for receiving the solar radiation and a receiving element characterized in that said receiver is provided with at least an absorber element associated to a rectenna matrix for direct conversion of solar energy in electric energy.
  • Fig. 1 shows a base scheme of a rectenna with its main characteristic elements.
  • a rectenna is a device for converting the electromagnetic energy propagating in the free space in direct current and it is usually made up of many elements, as for example: an antenna 1, a diode 2 as rectifier element, two filters 3 and 4, respectively arranged upstream and downstream of the diode 2.
  • the input filter 3 between antenna and rectifier has to:
  • the output filter 4 is needed for smoothing and rectifying the current produced.
  • the just described scheme in fig. 1 has many problems of realization in the hypothesis of converting an electromagnetic radiation with visible wave length in electric energy. Therefore in order to solve the technologic problems connected to what just described, the present invention proposes to introduce a frequency adapter from the visible to the infrared range.
  • Fig. 2 shows a possible, absolutely not limiting, preferred embodiment of the object of the present invention, in which a solar concentrator 6 allows to concentrate the solar radiation on the surface of a receiver 7 which, in this particular case, is arranged on the focal axis of the parabolic mirror 6.
  • Fig. 3 instead, shows the detail of the receiver 7 which, at its ends, is constituted by a glass cover 8 and by a rectenna matrix 9; between said ends being arranged an absorber element 10 mounted on supports of thermally insulating material 11.
  • the solar concentrator 6 allows to concentrate, by means of parabolic mirrors, the solar radiation so that the power density arriving on the surface of the receiver 7, increases. Therefore, the solar radiation crosses the glass cover 8 and arrives to the absorber 10 where the conversion of the solar radiation in infrared radiation occurs (energy down-converter). Still in the receiver 7, after the transformation in the absorber 10, the infrared radiation is converted directly in electric energy by a rectenna matrix 9 through an outer load.
  • the rectennas can surely be considered as one of the best alternatives with respect to the traditional photovoltaic cells to convert solar radiation energy, since they are an excellent transducer of the radiations propagating in the free space.

Landscapes

  • Photovoltaic Devices (AREA)
EP11425265.3A 2011-10-28 2011-10-28 Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas Withdrawn EP2587587A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11425265.3A EP2587587A1 (de) 2011-10-28 2011-10-28 Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas
PCT/IB2012/055920 WO2013061299A2 (en) 2011-10-28 2012-10-26 Device for direct conversion of solar energy by rectennas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11425265.3A EP2587587A1 (de) 2011-10-28 2011-10-28 Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas

Publications (1)

Publication Number Publication Date
EP2587587A1 true EP2587587A1 (de) 2013-05-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11425265.3A Withdrawn EP2587587A1 (de) 2011-10-28 2011-10-28 Vorrichtung zur direkten Umwandlung von Solarenergie durch Rectennas

Country Status (2)

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EP (1) EP2587587A1 (de)
WO (1) WO2013061299A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9413063B1 (en) 2014-06-17 2016-08-09 R.A. Miller Industries, Inc. Antenna-coupled metal-insulator-metal rectifier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445050A (en) * 1981-12-15 1984-04-24 Marks Alvin M Device for conversion of light power to electric power
US20110247679A1 (en) * 2010-04-13 2011-10-13 Ben Shelef Solar receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445050A (en) * 1981-12-15 1984-04-24 Marks Alvin M Device for conversion of light power to electric power
US20110247679A1 (en) * 2010-04-13 2011-10-13 Ben Shelef Solar receiver

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "PROGRAMMA DI RICERCA 2007", 1 January 2007 (2007-01-01), XP002676400, Retrieved from the Internet <URL:http://www.ricercaitaliana.it/prin/dettaglio_prin-2007B47XSN.htm#abstract> [retrieved on 20120510] *
ANONYMOUS: "Sviluppo e prototipazione di nano-dispositivi basati su strutture MIM e MOM per la conversione diretta dell'energia solare", PROGRAMMA DI RICERCA, 1 January 2007 (2007-01-01), XP002675798, Retrieved from the Internet <URL:http://www.ricercaitaliana.it/prin/dettaglio_completo_prin-2007B47XSN.htm#abstract> [retrieved on 20120510] *
CORKISH R ET AL: "Solar energy collection by antennas", SOLAR ENERGY, vol. 73, no. 6, 1 December 2002 (2002-12-01), PERGAMON PRESS. OXFORD, GB, pages 395 - 401, XP004421963, ISSN: 0038-092X, DOI: 10.1016/S0038-092X(03)00033-1 *
GOSWAMI D Y ET AL: "New and emerging developments in solar energy", SOLAR ENERGY, vol. 76, no. 1-3, 1 January 2004 (2004-01-01), PERGAMON PRESS. OXFORD, GB, pages 33 - 43, XP004481436, ISSN: 0038-092X, DOI: 10.1016/S0038-092X(03)00103-8 *
NUNZI J M: "Requirements for a rectifying antenna solar cell technology", SPIE,, 1 January 2010 (2010-01-01), BELLINGHAM WA USA, XP040523613 *
SACHIT GROVER ET AL: "Applicability of Metal/Insulator/Metal (MIM) Diodes to Solar Rectennas", IEEE JOURNAL OF PHOTOVOLTAIC, vol. 1, no. 1, 1 July 2011 (2011-07-01), I E E E, US, pages 78 - 83, XP011387334, ISSN: 2156-3381, DOI: 10.1109/JPHOTOV.2011.2160489 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9413063B1 (en) 2014-06-17 2016-08-09 R.A. Miller Industries, Inc. Antenna-coupled metal-insulator-metal rectifier

Also Published As

Publication number Publication date
WO2013061299A3 (en) 2013-12-27
WO2013061299A2 (en) 2013-05-02

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