CN102638053A - Solar grid-connected inverter with maximum power point tracking (MPPT) system - Google Patents
Solar grid-connected inverter with maximum power point tracking (MPPT) system Download PDFInfo
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- CN102638053A CN102638053A CN201110037964XA CN201110037964A CN102638053A CN 102638053 A CN102638053 A CN 102638053A CN 201110037964X A CN201110037964X A CN 201110037964XA CN 201110037964 A CN201110037964 A CN 201110037964A CN 102638053 A CN102638053 A CN 102638053A
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Abstract
The invention discloses a solar grid-connected inverter with a maximum power point tracking (MPPT) system. The solar grid-connected inverter comprises a cabinet-type container box body (22) of a metal structure, a door lock (18) and a door (19). Working state indicating lights (17) and an LCD (Liquid Crystal Display) screen (21) are arranged on the surface of the door (19), and a cooling fan (20) is arranged on the lateral face of the box body. The solar grid-connected inverter is characterized in that all unit circuits are arranged in the cabinet container box body of the metal structure, a photovoltaic grid-connected system which takes a DSP (Digital Signal Processing) microprocessor (12) as a main control chip has rapid operational capability and rich peripheral resources so as to provide a favorable platform for the entire control system, and an MPPT control algorithm which has the tacking object of making a load acquire maximum power is adopted to realize the tracking of a maximum power point.
Description
Technical field
The present invention relates to a kind of solar grid-connected inverter with maximal power tracing system, be specifically related to a kind of mainly with the solar energy photovoltaic cell capable of generating power and can significantly improve generating efficiency, the device that the electric energy that is produced is connected to the grid.
Background technology
Tradition solar photovoltaic power generation grid-connecting system comprises a solar inverter, and it is from the low DC output voltage of PV array received and produce the AC line voltage distribution.Do not adopt the inverter of MPPT algorithm simply photovoltaic module and battery directly to be coupled together, force photovoltaic module to be operated in cell voltage.Almost without exception be that photovoltaic cell voltage is not the ideal value of gathering maximum available solar energy.
Summary of the invention
The objective of the invention is shortcoming to present solar photovoltaic power generation grid-connecting inverter; And a kind of solar grid-connected inverter with maximal power tracing system is provided, can be widely used in large-scale concentrated photovoltaic generating system and independently low profile photovoltaic electricity generation system, family's photovoltaic generation mini-system etc.And have that volume is little, in light weight, convenient in carrying, advantages such as simple and freedom from repairs are installed.
The present invention realizes through following technical proposals:
A kind of solar grid-connected inverter with maximal power tracing system comprises the cabinet type container case of a metal structure.Said a kind of solar grid-connected inverter with maximal power tracing system is made up of cabinet type container case casing (22), door lock (18), the door (19) of metal structure.And the side that door (19) surface is provided with working station indicator (17), LCD display (21), casing also is provided with radiator fan (20).It is characterized in that its each element circuit all is installed in the cabinet type container case of this metal structure.
Said solar-energy photo-voltaic cell array element (1) is connected with AC load (5) with DC-AC inverter circuit (3), AC output filter circuit (4) through DC-DC change-over circuit (2); Solar-energy photo-voltaic cell array element (1) is connected with DSP microprocessor (12) through maximal power tracing system (11).It is characterized in that said is the photovoltaic parallel in system of major control chip with DSP microprocessor (12), and operational capability, abundant peripheral hardware resource can provide a good platform for The whole control system fast for they; It is the MPPT control algolithm of tracking target that employing makes load obtain maximum power, realizes the tracking of maximum power point better.
Said DSP microprocessor (12) is connected with utility network (7) through electrical network testing circuit (8); It is characterized in that being connected through electrical network testing circuit (8),, realized that the grid-connected current of system's output and line voltage keep with the frequency homophase the seizure of electric network voltage phase and the sampling of inductive current through DSP microprocessor (12).Keep profile consistent constantly with utility network (7) and grid-connected current waveform and grid voltage waveform, thereby the guaranteed output factor is realized being incorporated into the power networks smoothly with the 220V/50Hz sinusoidal ac near 1.It is characterized in that said DSP microprocessor (12) is connected with fault detect warning circuit (13).It is characterized in that said DSP microprocessor (12) is connected with RS485 communication interface circuit (14).It is characterized in that said DSP microprocessor (12) is connected with LCD display circuit (15).It is characterized in that said DSP microprocessor (12) is connected with Zi gBee wireless interface circuit (16).
Beneficial effect of the present invention:
1. an important approach is exactly to adjust the working point of solar-energy photo-voltaic cell in real time, carries out MPPT maximum power point tracking (MPPT), makes it to always work near the maximum power point.
2. experimental result shows; Adopt the MPPT system of TMS320F2812DSP chip controls; Realized tracing maximum power of photovoltaic cell; Circuit structure is simple, good reliability, efficient are high, and can also be to accumulator super-charge, cross put, the kinds of protect effect of abnormal conditions such as inversion output overcurrent, thereby have certain practical value.
3. abundant communications peripheral is for realizing that intelligent grid provides best solution.
Description of drawings:
Fig. 1 is a structure chart of the present invention;
Fig. 2 is an outside drawing in kind;
Embodiment:
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Visible by Fig. 2: a kind of solar grid-connected inverter that the present invention relates to maximal power tracing system, form by cabinet type container case casing (22), door lock (18), the door (19) of metal structure.And the side that door (19) surface is provided with working station indicator (17), LCD display (21), casing also is provided with radiator fan (20).
It is characterized in that its each element circuit all is installed in the cabinet type container case of this metal structure.Be connected with AC load (5) with DC-AC inverter circuit (3), AC output filter circuit (4) through DC-DC change-over circuit (2) referring to the said solar-energy photo-voltaic cell array element of Fig. 1 (1); Solar-energy photo-voltaic cell array element (1) is connected with DSP microprocessor (12) through maximal power tracing system (11).
It is characterized in that said is the photovoltaic parallel in system of major control chip with DSP microprocessor (12), and operational capability, abundant peripheral hardware resource can provide a good platform for The whole control system fast for they; It is the variable step MPPT control algolithm of tracking target that employing makes load obtain maximum power, can realize the tracking of maximum power point better.
(7 are connected said DSP microprocessor (12) with utility network with DC-AC inverter circuit (3), AC output filter circuit (4) and electrical network isolating switch circuit (6) through isolated drive circuit (9).
Said DSP microprocessor (12) is connected with utility network (7) through electrical network testing circuit (8); It is characterized in that being connected through electrical network testing circuit (8),, realized that the grid-connected current of system's output and line voltage keep with the frequency homophase the seizure of electric network voltage phase and the sampling of inductive current through DSP microprocessor (12).Keep profile consistent constantly with utility network (7) and grid-connected current waveform and grid voltage waveform, thereby the guaranteed output factor is realized being incorporated into the power networks smoothly with the 220V/50Hz sinusoidal ac near 1.
It is characterized in that said DSP microprocessor (12) is connected with ZigBee wireless interface circuit (16), for the intelligent grid of photovoltaic generating system provides best solution.
Obviously, those skilled in the art is to a kind of solar grid-connected inverter with maximal power tracing system of the present invention, carries out various changes and modification and do not break away from spirit of the present invention and range of application.Like this, belong within the scope of claim of the present invention and equivalent technology thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
The present invention is owing to adopt the TMS320F2812DSP chip; Realized tracing maximum power of photovoltaic cell; Experimental result shows; Its circuit structure is simple, good reliability, efficient are high, and have to accumulator super-charge, cross put, the kinds of protect effect of abnormal conditions such as inversion output overcurrent, thereby have certain practical value.
Claims (5)
1. solar grid-connected inverter with maximal power tracing system comprises the cabinet type container case of a metal structure, and it is made up of cabinet type container case casing (22), door lock (18), the door (19) of metal structure; And door (19) surface is provided with radiator fan (20) composition of the side setting of working station indicator (17), LCD display (21), casing: it is characterized in that its each element circuit all is installed in the cabinet type container case of this metal structure; Said solar-energy photo-voltaic cell array element (1) is connected with AC load (5) with DC-AC inverter circuit (3), AC output filter circuit (4) through DC-DC change-over circuit (2); Solar-energy photo-voltaic cell array element (1) is connected with DSP microprocessor (12) through maximal power tracing system (11); Said DSP microprocessor (12) is connected with utility network (7) through electrical network testing circuit (8); It is characterized in that being connected through electrical network testing circuit (8) through DSP microprocessor (12).
2. according to the said a kind of solar grid-connected inverter of claim 1, it is characterized in that said DSP microprocessor (12) is connected with fault detect warning circuit (13) with maximal power tracing system.
3. according to the said a kind of solar grid-connected inverter of claim 1, it is characterized in that said DSP microprocessor (12) is connected with RS485 communication interface circuit (14) with maximal power tracing system.
4. according to the said a kind of solar grid-connected inverter of claim 1, it is characterized in that said DSP microprocessor (12) is connected with LCD display circuit (15) with maximal power tracing system.
5. according to the said a kind of solar grid-connected inverter of claim 1, it is characterized in that said DSP microprocessor (12) is connected with ZigBee wireless interface circuit (16) with maximal power tracing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110037964XA CN102638053A (en) | 2011-02-11 | 2011-02-11 | Solar grid-connected inverter with maximum power point tracking (MPPT) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110037964XA CN102638053A (en) | 2011-02-11 | 2011-02-11 | Solar grid-connected inverter with maximum power point tracking (MPPT) system |
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| CN102638053A true CN102638053A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110037964XA Pending CN102638053A (en) | 2011-02-11 | 2011-02-11 | Solar grid-connected inverter with maximum power point tracking (MPPT) system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975955A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Gravity induction packing container with filter circuit |
| CN102975968A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Self-cooling packing container with filter circuit |
| CN102975969A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Self-cooling packing container with amplification circuit |
| CN106505874A (en) * | 2016-09-26 | 2017-03-15 | 国网江苏省电力公司盐城供电公司 | A kind of domestic photovoltaic inversion case |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932800Y (en) * | 2006-06-07 | 2007-08-08 | 徐君荣 | Portable solar power supply |
| US20080011288A1 (en) * | 2006-07-14 | 2008-01-17 | Olsson Mark S | Solar Collection Apparatus and Methods Using Accelerometers and Magnetic Sensors |
| CN101867291A (en) * | 2009-04-17 | 2010-10-20 | 吕斌 | Household solar photovoltaic inverter |
-
2011
- 2011-02-11 CN CN201110037964XA patent/CN102638053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932800Y (en) * | 2006-06-07 | 2007-08-08 | 徐君荣 | Portable solar power supply |
| US20080011288A1 (en) * | 2006-07-14 | 2008-01-17 | Olsson Mark S | Solar Collection Apparatus and Methods Using Accelerometers and Magnetic Sensors |
| CN101867291A (en) * | 2009-04-17 | 2010-10-20 | 吕斌 | Household solar photovoltaic inverter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975955A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Gravity induction packing container with filter circuit |
| CN102975968A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Self-cooling packing container with filter circuit |
| CN102975969A (en) * | 2012-11-06 | 2013-03-20 | 无锡市羊尖兴达包装箱厂 | Self-cooling packing container with amplification circuit |
| CN102975969B (en) * | 2012-11-06 | 2015-10-07 | 无锡市羊尖兴达包装箱厂 | There is the packing chest of certainly lowering the temperature of amplifying circuit |
| CN102975968B (en) * | 2012-11-06 | 2015-10-07 | 无锡市羊尖兴达包装箱厂 | There is the packing chest of certainly lowering the temperature of filter circuit |
| CN102975955B (en) * | 2012-11-06 | 2015-10-07 | 无锡市羊尖兴达包装箱厂 | There is the gravity sensing packing chest of filter circuit |
| CN106505874A (en) * | 2016-09-26 | 2017-03-15 | 国网江苏省电力公司盐城供电公司 | A kind of domestic photovoltaic inversion case |
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Application publication date: 20120815 |