CN102148509A - Grid-connected inverter for optimizing minimum unit of solar cell - Google Patents

Grid-connected inverter for optimizing minimum unit of solar cell Download PDF

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Publication number
CN102148509A
CN102148509A CN2011101234807A CN201110123480A CN102148509A CN 102148509 A CN102148509 A CN 102148509A CN 2011101234807 A CN2011101234807 A CN 2011101234807A CN 201110123480 A CN201110123480 A CN 201110123480A CN 102148509 A CN102148509 A CN 102148509A
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China
Prior art keywords
grid
inverter
solar cell
cell
converters
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Pending
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CN2011101234807A
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Chinese (zh)
Inventor
王红卫
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WANG WANG HONGWEI
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WANG WANG HONGWEI
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Priority to CN2011101234807A priority Critical patent/CN102148509A/en
Publication of CN102148509A publication Critical patent/CN102148509A/en
Pending legal-status Critical Current

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    • 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
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Photovoltaic Devices (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a grid-connected inverter for optimizing a minimum unit of a solar cell, which relates to the technical field of solar power grid connection. The grid-connected inverter comprises DC/DC converters in a number the same as that of cells. The cells are correspondingly connected with the DC/DC converters one to one, groups of batteries and DC/DC converters are connected in series, and then a formed module or array is connected in series with grid-connected alternating current by the DC/AC inverter. The grid-connected inverter is mainly applied to an inversion structure for the novel gallium arsenide solar cell. Due to the adoption of light focusing equipment, the efficiency of the gallium arsenide solar cell can be dozens of times that of a silicon solar cell, so a using body is provided for the cell inverter, namely, each cell unit can be configured with the DC/DC converter, and all the DC/DC converters are connected in series to form the array or module with required power. Therefore, the energy of each cell is maximally utilized, and the service life of the cell is greatly prolonged.

Description

The combining inverter that a kind of solar cell minimum unit is optimized
Technical field
The present invention relates to solar electric power interconnection technology field.
Background technology
Existing inverter mainly is divided into two kinds: a kind of is single array class inverter, promptly makees a total inverter at whole silicon solar cell array (having many single battery connection in series-parallel to form).Be characterized in simple in structure; Shortcoming is that whole array had just lost efficacy if there is a battery to break down in the array.Another kind is a module level inverter, be that each module in the array has oneself the transducer and the control of corresponding maximal power tracing of DC-to-DC (DC/DC), these transducers are cascaded, and join a direct current again to the inverter that exchanges (DC/AC).In this inverter, any in theory one group or a few Battery pack module damage does not influence the work of whole array, thus the life-span of having improved whole device; Certainly be limited to the inefficient characteristics of silion cell, this technology can't be fallen the scale of module too low, otherwise total is too complicated, and cost also can improve greatly.
Summary of the invention
The object of the invention is to design the combining inverter that the solar cell minimum unit of a kind of low cost, good operation stability is optimized.
The present invention includes the DC/DC transducer identical with number of batteries, earlier with battery with connect after the DC/DC transducer connects one to one, connect with the alternating current that is incorporated into the power networks by the DC/AC inverter again.
The present invention is cascaded the battery and the corresponding D C/DC of requirement, forms the module or the array of certain output voltage; Above-mentioned direct voltage is converted to the alternating current that can be incorporated into the power networks with the DC/AC inverter again.Adopt DC/DC that each GaAs materials for solar cells unit is carried out power transfer and maximal power tracing.The present invention is independently DC/DC conversion and MPPT control of each cell arrangement, and maximum has been utilized the energy of battery, and independently DC/DC transducer and control circuit are all simple relatively for each, is convenient to realize and integrated.
The present invention mainly is applicable in the inverter structure of new p type gallium arensidep (GaAs) materials for solar cells.By means of the light focus set, the efficient of GaAs material solar cell can be bigger tens times than silicon materials solar cell, and this provides the utilization main body for the cell level inverter.Just each battery unit all can dispose a DC/DC transducer, then they is together in series, and forms the array or the module of power demand.Utilize the energy of each battery like this, also further improved the life-span of battery greatly.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Embodiment
As shown in Figure 1, need ten groups of GaAs materials for solar cells 1, then need be equipped with ten groups of DC/DC transducers 2 as the present invention.
Earlier one group of GaAs materials for solar cells 1 and one group of DC/DC transducer 2 are connected one to one, form ten groups of module or arrays with certain output voltage.
With module or array series connection, connect with the alternating current that is incorporated into the power networks by DC/AC inverter 3 at last again.

Claims (1)

1. the combining inverter optimized of a solar cell minimum unit, it is characterized in that comprising the DC/DC transducer identical with number of batteries, earlier with battery with connect after the DC/DC transducer connects one to one, connect with the alternating current that is incorporated into the power networks by the DC/AC inverter again.
CN2011101234807A 2011-05-13 2011-05-13 Grid-connected inverter for optimizing minimum unit of solar cell Pending CN102148509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101234807A CN102148509A (en) 2011-05-13 2011-05-13 Grid-connected inverter for optimizing minimum unit of solar cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101234807A CN102148509A (en) 2011-05-13 2011-05-13 Grid-connected inverter for optimizing minimum unit of solar cell

Publications (1)

Publication Number Publication Date
CN102148509A true CN102148509A (en) 2011-08-10

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Family Applications (1)

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CN2011101234807A Pending CN102148509A (en) 2011-05-13 2011-05-13 Grid-connected inverter for optimizing minimum unit of solar cell

Country Status (1)

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CN (1) CN102148509A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013082857A1 (en) * 2011-12-09 2013-06-13 上海康威特吉能源技术有限公司 Centralized-distributed hybrid new energy power generation system and maximum power point tracking control method
CN104160577A (en) * 2012-01-17 2014-11-19 英飞凌科技奥地利有限公司 Power converter circuit, power supply system and method
US9401663B2 (en) 2012-12-21 2016-07-26 Infineon Technologies Austria Ag Power converter circuit with AC output
US9425622B2 (en) 2013-01-08 2016-08-23 Infineon Technologies Austria Ag Power converter circuit with AC output and at least one transformer
US9461474B2 (en) 2012-01-17 2016-10-04 Infineon Technologies Austria Ag Power converter circuit with AC output
US9478989B2 (en) 2012-01-17 2016-10-25 Infineon Technologies Austria Ag Power converter circuit with AC output
US9484746B2 (en) 2012-01-17 2016-11-01 Infineon Technologies Austria Ag Power converter circuit with AC output

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201194333Y (en) * 2008-03-17 2009-02-11 北京能高自动化技术有限公司 Solar photovoltaic parallel-in system
CN101710716A (en) * 2009-11-13 2010-05-19 南京航空航天大学 Grid-connected inverter capable of reducing electrolytic capacitance
CN101904015A (en) * 2007-10-15 2010-12-01 Ampt有限公司 Remote controlled efficiently solar energy system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101904015A (en) * 2007-10-15 2010-12-01 Ampt有限公司 Remote controlled efficiently solar energy system
CN201194333Y (en) * 2008-03-17 2009-02-11 北京能高自动化技术有限公司 Solar photovoltaic parallel-in system
CN101710716A (en) * 2009-11-13 2010-05-19 南京航空航天大学 Grid-connected inverter capable of reducing electrolytic capacitance

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013082857A1 (en) * 2011-12-09 2013-06-13 上海康威特吉能源技术有限公司 Centralized-distributed hybrid new energy power generation system and maximum power point tracking control method
CN103166239A (en) * 2011-12-09 2013-06-19 上海康威特吉能源技术有限公司 Centralized-distributed mixed novel energy power generation system and maximum power point tracking control method
CN103166239B (en) * 2011-12-09 2015-07-08 上海康威特吉能源技术有限公司 Centralized-distributed mixed novel energy power generation system and maximum power point tracking control method
CN104160577A (en) * 2012-01-17 2014-11-19 英飞凌科技奥地利有限公司 Power converter circuit, power supply system and method
US9461474B2 (en) 2012-01-17 2016-10-04 Infineon Technologies Austria Ag Power converter circuit with AC output
US9478989B2 (en) 2012-01-17 2016-10-25 Infineon Technologies Austria Ag Power converter circuit with AC output
US9484746B2 (en) 2012-01-17 2016-11-01 Infineon Technologies Austria Ag Power converter circuit with AC output
CN104160577B (en) * 2012-01-17 2017-11-07 英飞凌科技奥地利有限公司 Power converter circuit, power-supply system and method
US10084317B2 (en) 2012-01-17 2018-09-25 Infineon Technologies Austria Ag Power converter circuit with AC output
US9401663B2 (en) 2012-12-21 2016-07-26 Infineon Technologies Austria Ag Power converter circuit with AC output
US9425622B2 (en) 2013-01-08 2016-08-23 Infineon Technologies Austria Ag Power converter circuit with AC output and at least one transformer

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Application publication date: 20110810