CN204243783U - Photovoltaic network inverter - Google Patents
Photovoltaic network inverter Download PDFInfo
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- CN204243783U CN204243783U CN201420664107.1U CN201420664107U CN204243783U CN 204243783 U CN204243783 U CN 204243783U CN 201420664107 U CN201420664107 U CN 201420664107U CN 204243783 U CN204243783 U CN 204243783U
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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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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a kind of photovoltaic network inverter, PV Grid Connected Generation and photovoltaic power supply function effectively combine by the utility model, its controller adopts Infineon XE164CM single-chip microcomputer to be acp chip, and to control, the detection of line voltage synchronizing signal zero crossing of the PWM duty ratio of maximum power point tracking (MPPT) method of DC/DC converter unit, solar energy converts the control of electrical network same frequency synchronous sine-wave current feed-in electrical network to, the SPWM charging etc. of charger controls.The utility model have employed two kinds of different control strategies to PV Grid Connected Generation and function of supplying power, and the planning of its hardware configuration reaches the highest shared effect, to reducing costs very large meaning.
Description
Technical field:
The utility model relates to a kind of photovoltaic network inverter.
Background technology:
The energy is the power resources of human economy and cultural activity.At present owing to using fossil energy in a large number, the whole world produces a large amount of greenhouse gases every day, and oneself is through causing very serious air pollution.If do not add control, 1/4th of human living space will be subject to great threat thus.For above situation, exploitation regenerative resource and various green energy resource are the measures that the mankind must take to realize the energy resource structure of sustainable development.Consider from the factors of energy supply, solar energy meets the desirable green energy resource of sustainable development beyond doubt.
Grid-connected photovoltaic system and photovoltaic power supply system are the important applied field in photovoltaic system technology.If PV Grid Connected Generation and photovoltaic power supply function effectively combined, its application scenario can be widened further.PV Grid Connected Generation and photovoltaic power supply function effectively combine by the utility model photovoltaic network inverter, its controller adopts Infineon XE164CM single-chip microcomputer to be acp chip, and to control, the detection of line voltage synchronizing signal zero crossing of the PWM duty ratio of maximum power point tracking (MPPT) method of DC/DC converter unit, solar energy converts the control of electrical network same frequency synchronous sine-wave current feed-in electrical network to, the SPWM discharge and recharge etc. of charger controls.Have employed two kinds of different control strategies to PV Grid Connected Generation and function of supplying power, the planning of its hardware configuration reaches the highest shared effect, and this is to reducing costs very large meaning.
Summary of the invention:
The device that the purpose of this utility model is to provide that a kind of structure is simple, low cost, parallel network power generation and photovoltaic power supply function combine.The utility model is achieved through the following technical solutions: the control unit being core by three pieces of RE180S type photovoltaic battery panels, DC/DC converter unit, H bridge inverter unit, isolating transformer unit, T-shaped filter unit, charger, ferric phosphate lithium cell group, high frequency filter and XE164CM type Infineon single-chip microcomputer forms, three pieces of RE180S type photovoltaic battery panel (1) models are identical, and the power of every block RE180S type photovoltaic battery panel is 180W, three pieces of RE180S type photovoltaic battery panel (1) outputs are connected with the input of DC/DC converter unit (2)., the output of DC/DC converter unit (2) is connected with H bridge inverter unit (3) input, single-phase grid-connected voltage alternating current 220V is inputed to T-shaped filter unit (4) input by H bridge inverter unit (3) output, alternating voltage 220V is inputed to isolating transformer unit (5) input by T-shaped filter unit (4) output, alternating voltage 220V is inputed to single-phase electrical network (6) one end through isolating switch by isolating transformer unit (5) output, when there being sunshine, the energy of photovoltaic cell is sent to the input of charger (7) by the output of isolating transformer unit (5), and the energy of photovoltaic cell is sent to the input of ferric phosphate lithium cell group (8) by the output of charger (7), when there being electrical network, power grid energy is passed to the input of charger (7) by single-phase electrical network (6) one end, and power grid energy is sent to the input of ferric phosphate lithium cell group (8) by the output of charger (7).
Ferric phosphate lithium cell group (8) is made up of the HKE-IFP-480-10 ferric phosphate lithium cell group of three groups of identical models, and energy storage is in ferric phosphate lithium cell group (8); The charge and discharge control of charger (7), electric power detection signal are sent by the system controller (9) being core with Infineon single-chip microcomputer XE164CM, system controller (9) is the core of this device, and the control of the PWM duty ratio of maximum power point tracking (MPPT) method of DC/DC converter unit (2), the detection of line voltage synchronizing signal zero crossing, solar energy convert all controls such as the control of electrical network same frequency synchronous sine-wave current feed-in electrical network to and all realized by system controller (9); And when without sunshine and, taken out by the energy of battery by discharger when need throw light on without electrical network, then the function making electric ballast via H bridge inverter unit (3) goes gas discharge lamp through high frequency filter (10).Reach the highest shared effect by the hardware of this structural planning, structure is simple, and only need change a little on control program, and this also has very large meaning to reducing costs.
The utility model ferric phosphate lithium cell group, compared with traditional lead-acid batteries, has the advantage of self.Energy density is about 4 times of lead-acid battery, and volume is little, lightweight; Lithium iron phosphate positive material has good chemical property, and charge and discharge platform is very steady, Stability Analysis of Structures in charge and discharge process, and battery does not burn, do not explode, fail safe is good; Normal battery operation during external temperature 55 DEG C; Charge and discharge is 15 times of standard electric discharge; Monomer capacity after 2000 circulations is still greater than 80%; Whole production process cleans nontoxic, and all raw materials are all nontoxic.Thus this device have be have that energy density is high, volume is little, lightweight, long service life, safety, environmental protection feature.Control software design of the present utility model adopts pandemic computer advanced language C language in the world, and this software has modularization, portable feature.The utility model achievement further promotes the development of PV Grid Connected Generation and photovoltaic independently-powered function combined device, by the acp chip of Infineon single-chip microcomputer XE164CM as controller, widen the acp chip of photovoltaic controller, and ferric phosphate lithium cell group is included in device, the life-span that improve device discharge and recharge, the weight alleviating device and saved space.
Accompanying drawing illustrates:
Fig. 1 is the utility model photovoltaic network inverter structural representation
Fig. 2 is the utility model principle assumption diagram
Embodiment:
A kind of photovoltaic network inverter as shown in Figure 1, power output 500W, the control unit being core by three pieces of photovoltaic battery panel RE180S, DC/DC converter units, H bridge inverter unit, isolating transformer unit, T-shaped filter unit, charger, ferric phosphate lithium cell group, high frequency filter and Infineon single-chip microcomputer XE164CM forms.Three pieces of photovoltaic battery panel RE180S1, model is identical, and the power of every block photovoltaic battery panel RE180S is 180W; Three pieces of photovoltaic battery panel RE180S1, export variable DC voltage signal export to DC/DC converter unit 2, input, DC/DC converter unit 2, by the DC voltage pumping-up of three pieces of photovoltaic battery panel RE180S1 outputs to 400V, grid-connected 220V alternating voltage after inversion is provided; The 400V d. c. voltage signal of output is inputed to H bridge inverter unit 3 input by the output of DC/DC converter unit 2, and the 400V direct voltage that DC/DC converter unit 2 exports by H bridge inverter unit 3 is reverse into single-phase grid-connected voltage alternating current 220V; Single-phase grid-connected voltage alternating current 220V is inputed to T-shaped filter unit 4 input by H bridge inverter unit 3 output, and the AC signal that T-shaped filter unit 4 pairs of H bridge inverter unit 3 export carries out shaping filter; Alternating voltage 220V is inputed to isolating transformer unit 5 input by T-shaped filter unit 4 output, the introducing of isolating transformer unit 5 makes primary side and the electric of secondary side insulate completely, in addition, utilize the feature that the high-frequency loss of its iron core is large, high frequency spurs is suppressed to import control loop into, and isolating transformer unit can also make secondary suspend over the ground, isolation dangerous voltage protection personal safety; Alternating voltage 220V is inputed to single-phase electrical network 6 one end through isolating switch by isolating transformer unit 5 output; When there being sunshine, the energy of photovoltaic cell is sent to the input of charger 7 by the output of isolating transformer unit 5, and the energy of photovoltaic cell is sent to the input of ferric phosphate lithium cell group 8 by the output of charger 7; When there being electrical network, power grid energy is passed to the input of charger 7 by single-phase electrical network 6 one end, and power grid energy is sent to the input of ferric phosphate lithium cell group 8 by the output of charger 7; Ferric phosphate lithium cell group 8 is made up of the HKE-IFP-480-10 ferric phosphate lithium cell group of three groups of identical models, and energy storage is in ferric phosphate lithium cell group 8; The charge and discharge control of charger 7, electric power detection signal are sent by the system controller 9 being core with Infineon single-chip microcomputer XE164CM, system controller 9 is cores of this device, and the control of the PWM duty ratio of the maximum power point tracking MPPT method of DC/DC converter unit 2, the detection of line voltage synchronizing signal zero crossing, solar energy convert all controls such as the control of electrical network same frequency synchronous sine-wave current feed-in electrical network to and all realized by system controller 9; And when without sunshine and, taken out by the energy of battery by discharger when need throw light on without electrical network, then the function making electric ballast via H bridge inverter unit 3 goes gas discharge lamp through high frequency filter 10.Reach the highest shared effect by the hardware of this structural planning, and only need change a little on control program, this is to reducing costs very large meaning.
As shown in Figure 2, described photovoltaic network inverter, photovoltaic battery panel RE180S model: RE180S, the drive circuit chip model of DC/DC converter unit: MIC4425BM, switch mosfet cast number: IPW60R045CP, H bridge inverter unit driving chip model: 6ED003L06-F, IGBT switching tube model: Ikw30n60t, two inductance model: 2mH in T-shaped filter unit, electric capacity model: 5 μ F, isolating transformer unit model: GBD1:1, electrical network model: single phase alternating current (A.C.) 220V, ferric phosphate lithium cell group model: HKE-IFP-480-10, system controller acp chip Infineon single-chip microcomputer XE164CM model: XE164CM.
Claims (3)
1. a photovoltaic network inverter, it is characterized in that: power output is 500W, the control unit being core by three pieces of RE180S type photovoltaic battery panels, DC/DC converter unit, H bridge inverter unit, isolating transformer unit, T-shaped filter unit, charger, ferric phosphate lithium cell group, high frequency filter and XE164CM type Infineon single-chip microcomputer forms, three pieces of RE180S type photovoltaic battery panel (1) models are identical, and the power of every block RE180S type photovoltaic battery panel is 180W, three pieces of RE180S type photovoltaic battery panel (1) outputs are connected with the input of DC/DC converter unit (2)., the output of DC/DC converter unit (2) is connected with H bridge inverter unit (3) input, single-phase grid-connected voltage alternating current 220V is inputed to T-shaped filter unit (4) input by H bridge inverter unit (3) output, alternating voltage 220V is inputed to isolating transformer unit (5) input by T-shaped filter unit (4) output, alternating voltage 220V is inputed to single-phase electrical network (6) one end through isolating switch by isolating transformer unit (5) output, when there being sunshine, the energy of photovoltaic cell is sent to the input of charger (7) by the output of isolating transformer unit (5), and the energy of photovoltaic cell is sent to the input of ferric phosphate lithium cell group (8) by the output of charger (7), when there being electrical network, power grid energy is passed to the input of charger (7) by single-phase electrical network (6) one end, and power grid energy is sent to the input of ferric phosphate lithium cell group (8) by the output of charger (7).
2. a kind of photovoltaic network inverter according to claim 1, it is characterized in that: photovoltaic battery panel RE180S model: RE180S, the drive circuit chip model of DC/DC converter unit: MIC4425BM, switch mosfet cast number: IPW60R045CP, H bridge inverter unit driving chip model: 6ED003L06-F, IGBT switching tube model: Ikw30n60t, two inductance model: 2mH in T-shaped filter unit, electric capacity model: 5 μ F, isolating transformer unit model: GBD1:1, electrical network model: single phase alternating current (A.C.) 220V, ferric phosphate lithium cell group model: HKE-IFP-480-10, system controller acp chip Infineon single-chip microcomputer XE164CM model: XE164CM.
3. a kind of photovoltaic network inverter according to claim 1, is characterized in that: ferric phosphate lithium cell group (8) is made up of three groups of identical HKE-IFP-480-10 type ferric phosphate lithium cell groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664107.1U CN204243783U (en) | 2014-11-10 | 2014-11-10 | Photovoltaic network inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420664107.1U CN204243783U (en) | 2014-11-10 | 2014-11-10 | Photovoltaic network inverter |
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| CN204243783U true CN204243783U (en) | 2015-04-01 |
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| CN201420664107.1U Expired - Fee Related CN204243783U (en) | 2014-11-10 | 2014-11-10 | Photovoltaic network inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006836A (en) * | 2015-07-21 | 2015-10-28 | 安徽灿邦电气有限公司 | Inverter grid-connected control system based on unified constant-frequency integration |
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2014
- 2014-11-10 CN CN201420664107.1U patent/CN204243783U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006836A (en) * | 2015-07-21 | 2015-10-28 | 安徽灿邦电气有限公司 | Inverter grid-connected control system based on unified constant-frequency integration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20201110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |