CN102025291A - Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module - Google Patents
Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module Download PDFInfo
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- CN102025291A CN102025291A CN2010105962743A CN201010596274A CN102025291A CN 102025291 A CN102025291 A CN 102025291A CN 2010105962743 A CN2010105962743 A CN 2010105962743A CN 201010596274 A CN201010596274 A CN 201010596274A CN 102025291 A CN102025291 A CN 102025291A
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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
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a photovoltaic assembly with an MPPT (Maximum Power Point Tracking) module, which comprises a photovoltaic battery pack and an MPPT controller, wherein the MPPT controller comprises an A/D conversion module, an A/D control module, an MPPT module, a PWM (Pulse-Width Modulation) module, a bridge driving module and a DC (Direct Current)/DC module; the input end of the A/D conversion module is used for inputting the voltage and the current data of the photovoltaic battery pack, and the output end of the A/D conversion module is connected with the input end of the A/D control module; the input end of the MPPT module is connected with the output end of the A/D control module, and the output end of the MPPT module is connected with the input end of the PWM module; the input end of the bridge driving module is connected with the output end of the PWM module; and the output end of the bridge driving module is connected with the DC/DC module outputting voltage signals. In the invention, the MPPT module is internally arranged, which ensures that the output of each photovoltaic assembly is maintained at a maximum power point, thereby the efficiency of a photovoltaic system is effectively improved.
Description
Technical field
The present invention relates to a kind of photovoltaic module, belong to the solar photovoltaic grid-connection apparatus field.
Background technology
The conventional photovoltaic system adopts ten to hundreds of photovoltaic module connection in series-parallel to set up.Usually connect earlier by a plurality of battery components and form the photovoltaic module string, will gang up the photovoltaic array that forms in parallel again, be connected on the inverter.This inverter is realized maximal power tracing to whole array, collects electric energy and direct current is converted to interchange to be connected on the electrical network.
The conventional photovoltaic system effectiveness is lower.When several photovoltaic modulies were connected, each all had a slightly different maximum power electric current, and this series system just can not make each assembly export optimal power electric current, thereby causes the loss that do not match.When occurring the partial occlusion problem on the panel, battery performance reduces, and also can cause above-mentioned mismatch problem.Because the requirement of coupling makes also to have certain limitation in system design and roof utilization, has increased the difficulty of the system reform and enlarging simultaneously.In addition,, make this system to monitor to total power output because data can only obtain from inverter, can not be specific to the individual cell in the array, this has brought very big difficulty for system maintenance and trouble hunting.
Summary of the invention
Goal of the invention: at the problem and shortage of above-mentioned existing existence, the invention provides the photovoltaic module of a kind of MPPT of carrying (MPPT maximum power point tracking) controller, can improve the efficient of photovoltaic parallel in system, make each photovoltaic module can both realize maximum power output.
Technical scheme: for achieving the above object, the technical solution used in the present invention is: a kind of photovoltaic module that carries the MPPT controller, it is characterized in that: comprise photovoltaic cell group and MPPT controller, described MPPT controller comprises A/D modular converter, A/D control module, MPPT module, PWM module, bridge-drive module and DC/DC module; Described A/D modular converter input input photovoltaic cell group voltage and current data, the output of A/D modular converter connects the input of the described A/D modular converter of control to the A/D control module of the sampling of voltage and current data; The input of described MPPT module connects the output of A/D control module, and the output of MPPT module connects the input of PWM module; The input of described bridge-drive module connects the output of PWM module, and the output of bridge-drive module connects the DC/DC module of output voltage signal.Described A/D control module, MPPT module and PWM module can realize by the FPGA module.
Described A/D modular converter can be selected one 8 ADC (analog/digital converter) chip for use, realizes the collection to solar cell panel voltages and current data.
Described DC/DC module can be made of 4 MOSFET tube bridges, by controlling the ON time of each MOSFET pipe, realizes the automatic adjusting of the ratio of boosting.
In order accurately to understand the electric current and voltage state of each assembly, also comprise communication module and SPI interface; The input of described communication module connects the output of described A/D control module; The output of described communication module connects the SPI interface.This communication module is delivered to extraneous monitoring station with the voltage and current signal of described A/D control module output by the SPI interface.
Beneficial effect: the present invention carries built-in MPPT module in the photovoltaic module of MPPT module, can make each photovoltaic module output all remain on maximum power point, has effectively improved the efficient of photovoltaic system; And all added the output signal of communication module monitoring A/D control module at each photovoltaic module, monitoring has been refine to component-level, got rid of for system maintenance and fault and brought convenience.
Description of drawings
Fig. 1 is the structural representation of photovoltaic module of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the present invention carries the photovoltaic module of MPPT module, comprises 8 ADC chips, A/D control module, MPPT module, PWM module, bridge-drive module, DC/DC module; The input of described 8 ADC chips is gathered the voltage and current value of photovoltaic cell group; Described A/D control module is controlled the sampling of 8 ADC chips to described voltage and current data, and the voltage and current value that sampling obtains is input in the MPPT module; Described MPPT module is calculated the voltage and current value of input, tracks the voltage and current value of power maximum point, and then PWM output waveform duty ratio in the control PWM module; Described PWM module is passed through the ON time of 4 MOSFET pipes in the bridge-drive module controls DC/DC module, thereby adjusts the step-up ratio of DC/DC automatically; The communication module that links to each other with A/D control module output collects the signal of A/D control module output, delivers to extraneous monitoring station by the SPI interface, realizes the monitoring function to photovoltaic module output voltage electric current.
Claims (3)
1. photovoltaic module that carries the MPPT controller, it is characterized in that: comprise photovoltaic cell group and MPPT controller, described MPPT controller comprises A/D modular converter, A/D control module, MPPT module, PWM module, bridge-drive module and DC/DC module; Described A/D modular converter input input photovoltaic cell group voltage and current data, the output of A/D modular converter connects the input of the described A/D modular converter of control to the A/D control module of the sampling of voltage and current data; The input of described MPPT module connects the output of A/D control module, and the output of MPPT module connects the input of PWM module; The input of described bridge-drive module connects the output of PWM module, and the output of bridge-drive module connects the DC/DC module of output voltage signal.2, according to the described photovoltaic module that carries the MPPT module of claim 1, it is characterized in that: described A/D modular converter is 8 ADC chips.
2. according to the described photovoltaic module that carries the MPPT module of claim 1, it is characterized in that: described DC/DC module is made of 4 MOSFET tube bridges.
3. according to the described photovoltaic module that carries the MPPT module of claim 1, it is characterized in that: also comprise communication module and SPI interface; The input of described communication module connects the output of described A/D control module; The output of described communication module connects the SPI interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105962743A CN102025291A (en) | 2010-12-20 | 2010-12-20 | Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module |
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| CN2010105962743A CN102025291A (en) | 2010-12-20 | 2010-12-20 | Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module |
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| CN102025291A true CN102025291A (en) | 2011-04-20 |
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| CN2010105962743A Pending CN102025291A (en) | 2010-12-20 | 2010-12-20 | Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592992A (en) * | 2013-11-18 | 2014-02-19 | 国家电网公司 | System and method for rapid optimizing of maximum power point of photovoltaic array under shadow condition |
| CN104917455A (en) * | 2014-02-26 | 2015-09-16 | 全汉企业股份有限公司 | Inverting apparatus and photovoltaic power system using the same |
| CN105375517A (en) * | 2015-11-12 | 2016-03-02 | 上海交通大学 | Photovoltaic grid-connected generation system for achieving maximum power point tracking of photovoltaic assemblies in any lighting condition |
| CN107612037A (en) * | 2017-10-30 | 2018-01-19 | 云南电网有限责任公司西双版纳供电局 | A kind of substation photovoltaic grid-connecting apparatus |
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| CN1512286A (en) * | 2002-12-30 | 2004-07-14 | 北京通力环电气股份有限公司 | Solar energy power device and its maximum power point tracing and control method |
| CN1797892A (en) * | 2004-12-30 | 2006-07-05 | 中国科学院电工研究所 | Tracker for maximum power of light-volt electric-power production by solar energy, and control method |
| US20080203994A1 (en) * | 2006-05-09 | 2008-08-28 | Min Won Park | Control Apparatus and Method of Senseless MPPT Control For Photovoltaic Power Generation System |
| CN201569902U (en) * | 2009-09-15 | 2010-09-01 | 安徽天宇太阳能电力电源有限公司 | Photovoltaic data collector |
| CN201966833U (en) * | 2010-12-20 | 2011-09-07 | 东南大学 | Photovoltaic module with self-provided MPPT (maximum power point tracking) controller |
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2010
- 2010-12-20 CN CN2010105962743A patent/CN102025291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1512286A (en) * | 2002-12-30 | 2004-07-14 | 北京通力环电气股份有限公司 | Solar energy power device and its maximum power point tracing and control method |
| CN1797892A (en) * | 2004-12-30 | 2006-07-05 | 中国科学院电工研究所 | Tracker for maximum power of light-volt electric-power production by solar energy, and control method |
| US20080203994A1 (en) * | 2006-05-09 | 2008-08-28 | Min Won Park | Control Apparatus and Method of Senseless MPPT Control For Photovoltaic Power Generation System |
| CN201569902U (en) * | 2009-09-15 | 2010-09-01 | 安徽天宇太阳能电力电源有限公司 | Photovoltaic data collector |
| CN201966833U (en) * | 2010-12-20 | 2011-09-07 | 东南大学 | Photovoltaic module with self-provided MPPT (maximum power point tracking) controller |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592992A (en) * | 2013-11-18 | 2014-02-19 | 国家电网公司 | System and method for rapid optimizing of maximum power point of photovoltaic array under shadow condition |
| CN103592992B (en) * | 2013-11-18 | 2016-02-10 | 国家电网公司 | The quick optimization system of maximum power point of photovoltaic array and method under a kind of shadowed condition |
| CN104917455A (en) * | 2014-02-26 | 2015-09-16 | 全汉企业股份有限公司 | Inverting apparatus and photovoltaic power system using the same |
| CN104917455B (en) * | 2014-02-26 | 2017-05-17 | 全汉企业股份有限公司 | Inverting apparatus and photovoltaic power system using the same |
| CN105375517A (en) * | 2015-11-12 | 2016-03-02 | 上海交通大学 | Photovoltaic grid-connected generation system for achieving maximum power point tracking of photovoltaic assemblies in any lighting condition |
| CN107612037A (en) * | 2017-10-30 | 2018-01-19 | 云南电网有限责任公司西双版纳供电局 | A kind of substation photovoltaic grid-connecting apparatus |
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Application publication date: 20110420 |