CN111697682A - String type high-power MPPT solar charging controller - Google Patents

String type high-power MPPT solar charging controller Download PDF

Info

Publication number
CN111697682A
CN111697682A CN202010666505.7A CN202010666505A CN111697682A CN 111697682 A CN111697682 A CN 111697682A CN 202010666505 A CN202010666505 A CN 202010666505A CN 111697682 A CN111697682 A CN 111697682A
Authority
CN
China
Prior art keywords
direct current
input
mppt
emi filter
string
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.)
Pending
Application number
CN202010666505.7A
Other languages
Chinese (zh)
Inventor
唐万光
陈华丰
邹仙生
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.)
Guangdong Xindun Power Technology Co ltd
Original Assignee
Guangdong Xindun Power Technology Co ltd
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 Guangdong Xindun Power Technology Co ltd filed Critical Guangdong Xindun Power Technology Co ltd
Priority to CN202010666505.7A priority Critical patent/CN111697682A/en
Publication of CN111697682A publication Critical patent/CN111697682A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • H02M3/1586—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a string type high-power MPPT solar charging controller in the photovoltaic technical field, which comprises: the solar cell panel array string input connecting terminal, the MPPT maximum power point tracking circuit, the input direct current switch, the output direct current switch, the input direct current EMI filter, the output direct current EMI filter, the display/external communication module and the DSP module; the MPPT conversion circuit adopts a four-phase interleaved parallel BUCK circuit design, can effectively reduce output ripples, thereby reducing parameters of a filter capacitor and a follow current inductor, further improving power density, reducing volume and improving power grade; the direct input of 12 groups of serial solar cell panel arrays is supported, the integrated combiner box function is achieved, an additional photovoltaic combiner box is not needed in system application, and the on-site wiring has the advantages of convenience, safety and the like.

Description

String type high-power MPPT solar charging controller
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a string type high-power MPPT solar charging controller.
Background
In the field of high-power solar photovoltaic off-grid power generation, a system of the high-power solar photovoltaic off-grid power generation system generally comprises a solar photovoltaic module, a photovoltaic combiner box, a photovoltaic charge controller, an off-grid inverter, a storage battery pack and the like. However, the conventional high-power photovoltaic charge controller has the following problems:
the traditional high-power photovoltaic charging controller generally adopts a PWM control mode, the control mode is a current mode control mode, the maximum power point of a solar array can change along with the change of illumination intensity and ambient temperature, and therefore the maximum power point of the solar array cannot be tracked, and therefore the control mode is low in power generation efficiency and cannot fully utilize solar energy resources.
Later, technicians propose that a MPPT maximum power point tracking control mode is adopted for a high-power photovoltaic charging controller, the problem of low power generation efficiency can be basically solved by the MPPT maximum power point tracking control mode, but the high-power charging controller needs to be matched with a photovoltaic junction box for use in system application, the method is complex in field wiring, and more cables are needed. Based on the above, the invention designs a string type high-power MPPT solar charging controller to solve the above problems.
Disclosure of Invention
The invention aims to provide a string type high-power MPPT solar charging controller to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a string type high-power MPPT solar charging controller comprises: the solar cell panel array string input connecting terminal, the MPPT maximum power point tracking circuit, the input direct current switch, the output direct current switch, the input direct current EMI filter, the output direct current EMI filter, the display/external communication module and the DSP module; the series-input wiring terminal of the solar cell panel array is connected with an input direct current EMI filter through an input direct current switch, the direct current EMI filter is connected with an MPPT maximum power point tracking circuit through an anti-reverse diode, the MPPT maximum power point tracking circuit is connected with an output direct current EMI filter, and the output direct current EMI filter is connected with a storage battery pack through the output end of an output direct current switch.
Preferably, the controller further includes an integrated junction box for lightning-proof junction of the electrical equipment.
Preferably, the solar panel array string input connection terminal comprises 12 sets of connection terminals PV + and PV-, wherein the support string 3 is input by 1.
Preferably, the solar panel array connecting terminal PV + is connected to the photovoltaic fuse and then connected to the input direct current switch, and the solar panel array connecting terminal PV-is connected to the input direct current switch.
Preferably, the solar panel array connection terminals PV + and PV-are connected with the dc lightning protection device through the input dc switch and are connected to the input dc EMI filter.
Preferably, the MPPT maximum power point tracking circuit adopts a four-phase interleaved BUCK circuit topology design, and each phase includes an IGBT chopper module, two filter capacitors, and a freewheeling inductor.
Compared with the prior art, the invention has the beneficial effects that: the MPPT conversion circuit adopts a four-phase interleaved parallel BUCK circuit design, can effectively reduce output ripples, thereby reducing parameters of a filter capacitor and a follow current inductor, further improving power density, reducing volume and improving power grade; the direct input of 12 groups of serial solar cell panel arrays is supported, the integrated combiner box function is achieved, an additional photovoltaic combiner box is not needed in system application, and the on-site wiring has the advantages of convenience, safety and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a circuit module according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a photovoltaic fuse 1, a direct current switch 2, a direct current lightning protector 3, a direct current EMI filter 4, an anti-reverse diode 5, a filter capacitor 6, an IGBT chopping module 7, a follow current inductor 8, a filter capacitor 9, a direct current EMI filter 10 and a direct current switch 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a string type high-power MPPT solar charging controller comprises 12 groups of solar cell panel array wiring terminals PV + and wiring terminals PV-, wherein a support string 3 is input in a gathering 1 mode; the solar array wiring terminal PV + is firstly connected to the photovoltaic fuse and then connected to the input direct current switch, the solar array wiring terminal PV-is connected to the input direct current switch, and PV + and PV-are connected with the direct current lightning arrester and connected to the input direct current EMI filter after passing through the input direct current switch and then connected to the MPPT maximum power point tracking circuit (wherein the positive electrode of the MPPT maximum power point tracking circuit firstly passes through the anti-reflection diode); the output end of the MPPT maximum power point tracking circuit is connected with an output direct current EMI filter, and the output end of the output direct current EMI filter is connected with an output direct current switch.
The MPPT maximum power point tracking circuit adopts a four-phase staggered parallel BUCK circuit topology design, and each phase comprises an IGBT chopping module, two filter capacitors and a follow current inductor.
The solar panel array wiring terminal comprises 12 groups of wiring terminals PV + and wiring terminals PV-, wherein the support group string 3 is input in a gathering 1 mode; each path of PV + input is connected with a photovoltaic fuse 1, 12 groups of solar panel array wiring terminals PV + and PV-are connected to an input direct current switch 2, the output end of the input direct current switch is connected with a direct current lightning protector 3 and connected to an input direct current EMI filter 4, the anode of the output end of the input direct current EMI filter is connected to the anode of an anti-reverse diode 5, and the cathodes of the 4 groups of anti-reverse diodes are respectively connected with an MPPT maximum power point tracking circuit.
The cathode of the anti-reverse diode 5 is connected with the anode of an input filter capacitor 6 and the collector of an IGBT chopper module 7 in the MPPT maximum power point tracking circuit respectively, the midpoint of the IGBT chopper module 7 is connected with one end of a follow current inductor 8, and the other end of the follow current inductor 8 is connected with the anode of an output filter capacitor 9 and the input end of an output direct current EMI filter 10 respectively. The output end of the output direct current EMI filter 10 is connected with the input end of the output direct current switch 11, and the output end of the output direct current switch 11 is connected with the storage battery pack.
The MPPT maximum power point tracking circuit for each phase comprises an input filter capacitor 6, an IGBT chopper module 7, a follow current inductor 8 and an output filter capacitor 9. The four-phase staggered parallel BUCK circuit topology means that four BUCK circuits work in a staggered mode and output is connected in parallel.
The MPPT conversion circuit adopts a four-phase interleaved parallel BUCK circuit design, and can effectively reduce output ripples, thereby reducing parameters of a filter capacitor and a follow current inductor, further improving power density, reducing volume and improving power grade; the direct input of 12 groups of serial solar cell panel arrays is supported, the integrated combiner box function is achieved, an additional photovoltaic combiner box is not needed in system application, and the on-site wiring has the advantages of convenience, safety and the like.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a big power MPPT solar charging controller of cluster formula which characterized in that: the method comprises the following steps: the solar cell panel array string input connecting terminal, the MPPT maximum power point tracking circuit, the input direct current switch, the output direct current switch, the input direct current EMI filter, the output direct current EMI filter, the display/external communication module and the DSP module; the series-input wiring terminal of the solar cell panel array is connected with an input direct current EMI filter through an input direct current switch, the direct current EMI filter is connected with an MPPT maximum power point tracking circuit through an anti-reverse diode, the MPPT maximum power point tracking circuit is connected with an output direct current EMI filter, and the output direct current EMI filter is connected with a storage battery pack through the output end of an output direct current switch.
The DSP digital processor module is used for overall control, and the MPPT maximum power point tracking circuit is used for controlling input of photovoltaic energy and maximum power point tracking.
2. The string-type high-power MPPT solar charging controller according to claim 1, characterized in that: the controller is also provided with an integrated combiner box for lightning protection and combination of the electrical equipment.
3. The string-type high-power MPPT solar charging controller according to claim 1, characterized in that: the solar panel array wiring terminal comprises 12 groups of wiring terminals PV + and wiring terminals PV-, wherein the support group string 3 is input in a gathering 1 mode.
4. The string-type high-power MPPT solar charging controller according to claim 3, characterized in that: the solar cell panel array connecting terminal PV + is connected to the photovoltaic fuse and then connected to the input direct current switch, and the solar cell panel array connecting terminal PV-is connected to the input direct current switch.
5. The string-type high-power MPPT solar charging controller according to claim 4, characterized in that: and the solar panel array wiring terminals PV + and PV-are connected with the direct current lightning protector after passing through the input direct current switch and are connected to the input direct current EMI filter.
6. The string-type high-power MPPT solar charging controller according to claim 1, characterized in that: the MPPT maximum power point tracking circuit adopts a four-phase staggered parallel BUCK circuit topology design, and each phase comprises an IGBT chopping module, two filter capacitors and a follow current inductor.
CN202010666505.7A 2020-07-10 2020-07-10 String type high-power MPPT solar charging controller Pending CN111697682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010666505.7A CN111697682A (en) 2020-07-10 2020-07-10 String type high-power MPPT solar charging controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010666505.7A CN111697682A (en) 2020-07-10 2020-07-10 String type high-power MPPT solar charging controller

Publications (1)

Publication Number Publication Date
CN111697682A true CN111697682A (en) 2020-09-22

Family

ID=72485385

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010666505.7A Pending CN111697682A (en) 2020-07-10 2020-07-10 String type high-power MPPT solar charging controller

Country Status (1)

Country Link
CN (1) CN111697682A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114900041A (en) * 2022-04-14 2022-08-12 北京智源新能电气科技有限公司 Voltage-lifting direct-current converter staggered parallel system and control algorithm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114900041A (en) * 2022-04-14 2022-08-12 北京智源新能电气科技有限公司 Voltage-lifting direct-current converter staggered parallel system and control algorithm
CN114900041B (en) * 2022-04-14 2024-10-29 北京智源新能电气科技有限公司 Control method for alternating parallel system of buck-boost direct current converter

Similar Documents

Publication Publication Date Title
CN201550052U (en) Solar power supply system
CN101710716A (en) Grid-connected inverter capable of reducing electrolytic capacitance
CN101938136A (en) Photovoltaic component DC grid-connection controller
CN102780398A (en) Intelligent component optimizer for solar photovoltaic cell panel and control method thereof
Liang et al. Simulation analysis of grid-connected AC/DC hybrid microgrid
CN108233713B (en) A kind of non-isolated three-port DC switch converters and its control method
CN110086340B (en) Coupling inductance bidirectional large-transformation-ratio DC-DC converter
CN108173280A (en) Light stores up integral system
CN204243781U (en) A kind of single-stage photovoltaic grid-connected inverter
CN111697682A (en) String type high-power MPPT solar charging controller
CN117650555A (en) Parallel-off-grid photovoltaic energy storage integrated converter
CN203434932U (en) Combiner box
CN102237824A (en) Photovoltaic (PV) inverter
CN212676941U (en) String type high-power MPPT solar charging controller
CN211859618U (en) Novel VSG light-storage grid-connected power generation system
CN214798894U (en) Intelligent energy-using photovoltaic grid-connected system
CN212367152U (en) Unipolar boost inverter of integrated switched capacitor circuit
CN212210848U (en) Boost conversion circuit based on control chip
CN204794129U (en) High -power photovoltaic power generation tracks control system
CN110690723B (en) Control method of energy storage type modular multilevel converter in offshore wind power system
CN209994346U (en) Photovoltaic module
CN114759109A (en) Laminated solar module
CN202840596U (en) Solar photovoltaic energy storage power station
CN202085088U (en) Power converting device of permanently-magnetic synchronous direct-drive current power generator unit
CN220156277U (en) Boost-buck MPPT photovoltaic charging circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination