CN110224668A - A kind of tandem type MPPT energy management system - Google Patents
A kind of tandem type MPPT energy management system Download PDFInfo
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- CN110224668A CN110224668A CN201910393665.6A CN201910393665A CN110224668A CN 110224668 A CN110224668 A CN 110224668A CN 201910393665 A CN201910393665 A CN 201910393665A CN 110224668 A CN110224668 A CN 110224668A
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- 238000004891 communication Methods 0.000 abstract description 5
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/425—Power storage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/428—Power distribution and management
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/44—Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
- B64G1/443—Photovoltaic cell arrays
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Inverter Devices (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention provides a kind of tandem type MPPT energy management system, includes: N number of solar battery array；N number of identical power optimization device, the corresponding solar battery array of one power optimization device, the input terminal of power optimization device is electrically connected corresponding solar array and constitutes a distributed unit, the output end of N number of power optimization device is sequentially connected in series, and tracks corresponding solar array peak power by power optimization device；Power inverter, the input terminal of power inverter is electrically connected the output end of the first power optimization device and the output end of N power optimization device by intermediate bus bar, the output end of power inverter connects battery group, converts busbar voltage by power inverter as the input voltage of battery group.The present invention, without communication series system, solves the problems, such as that power device voltage stress is high in power optimization device, simplifies the connection line of distributed unit part, reduces the transmission loss in system by power optimization device.
Description
Technical field
The present invention relates to photovoltaic power generation DC transfer circuit control technology fields, in particular to one kind to be suitable for distributed light
Lie prostrate the tandem type MPPT energy management system of power generation.
Background technique
As the mankind explore movable increasingly frequent and space technology the fast development of space, high performance space flight
Device is in urgent need high power system.Currently, photovoltaic-storage battery power supply system is widely used in spacecraft, it is main to wrap
Solar battery array, energy management unit and battery composition are included, the energy balance of aircraft is realized, meets the long-term of aircraft
In-orbit requirement.In order to realize the high-power fan-out capability of power-supply system, need to solve the power regulation problem of large-scale photovoltaic.
Currently, power optimization device mostly uses greatly two-stage topology framework in civilian photovoltaic system, distributed photovoltaic system is realized
Power regulation, the functions such as grid-connected.Front stage circuits mainly realize photovoltaic MPPT (Maximum Power in this topological structure
Point Tracking MPPT maximum power point tracking) function, late-class circuit, which is realized, stablizes bus or the functions such as grid-connected.Two-stage circuit it
Between communicated by bus, realize the transmission of data, solve the problems, such as the voltage matches of front stage power circuit.But it is extensive
Since photovoltaic module output voltage is high in photovoltaic system, cause photovoltaic module mismatch problems serious, and power in front stage circuits
Device voltage stress is high, and parts selection difficulty is larger, suitable for application in spatial overlay.
In addition, front stage circuit needs to carry out data transmission by bus in above-mentioned two-stage topology framework.Work as two-stage circuit
Space length farther out when, since signal interference causes to communicate unstable, and route is more, and system weight is big, is not suitable for space
Aircraft light-weight design demand.
Summary of the invention
The purpose of the present invention is to propose to a kind of tandem type MPPT energy management systems, are suitable for large-scale distributed photovoltaic energy
The power regulation of system.The present invention includes the front and back stages circuit being electrically connected by intermediate bus bar.Prime is defeated using several
The power optimization device that outlet is connected in series, solves the problems, such as high pressure acid leaching component mismatch, and reduce power optimization
The voltage stress of power device in device.Rear class realizes the voltage matches of intermediate bus bar and battery group using Buck type circuit.Before
Level framework is mutually indepedent afterwards, does not need bus communication and realizes data transmission.
In order to achieve the above object, the present invention provides a kind of tandem type MPPT energy management system, includes: N number of sun electricity
Chi Zhen, identical N number of power optimization device, power inverter, battery group；
The solar battery array, conversion solar can be direct current energy；
N number of power optimization device, respectively the first power optimization device to N power optimization device；One power optimization device
A corresponding solar array；The input terminal of power optimization device is electrically connected corresponding solar array, constitutes one point
Cloth unit；The output end of N number of power optimization device is sequentially connected in series；By power optimization device, corresponding solar battery array is promoted
Output voltage, track corresponding solar array peak power, realize the maximum power output of corresponding solar array；
Power inverter, the input terminal of power inverter are electrically connected the output of the first power optimization device by intermediate bus bar
The output end at end and N power optimization device；Intermediate-bus voltage is converted by power inverter as the input voltage of battery group；
Battery group is electrically connected the output end of power inverter, the direct current energy of storage power converter output.
The power optimization device includes: Boost type circuit topology, the first signal sample circuit, MPPT strategy execution circuit
With the first driving circuit；
The Boost type circuit topology includes: boost inductance L1, power switch tube Q1, power switch tube Q2, solar cell
Battle array filter capacitor C1, intermediate bus bar filter capacitor C2；Wherein the first end of boost inductance L1 is connecting corresponding solar battery array just
Pole, solar battery array filter capacitor C1 first end；The drain electrode of the second end connection power switch tube Q1 of boost inductance L1, power
The drain electrode of switching tube Q2；The first end of the source electrode connection intermediate bus bar filter capacitor C2 of power switch tube Q2；Intermediate bus bar filtering
The second end of capacitor C2, the source electrode of power switch tube Q2, the corresponding sun of second end connection of solar battery array filter capacitor C1 are electric
The cathode of Chi Zhen；
The voltage signal U of the first signal sample circuit acquisition boost inductance L1 first endin1, current signal Iin1, with
And the voltage signal U of the source electrode of power switch tube Q2out1, current signal Iout1, and collected signal is converted into corresponding number
Word amount signal；
MPPT strategy execution circuit input terminal is electrically connected the output end of first sample circuit, according to the electricity of digital quantity
Press signal Uin1、Uout1With digital quantity current signal Iin1、Iout1Generate first control signal；
The input terminal of first driving circuit is electrically connected the output end of MPPT strategy execution circuit, the first driving circuit it is defeated
Outlet is electrically connected the gate pole of the gate pole of power switch tube Q1, power switch tube Q2；First driving circuit based on the received first
It controls signal and generates corresponding first driving signal, pass through the first driving signal on-off power switch tube Q1, power switch
Pipe Q2.
The power inverter includes: Buck type circuit topology, second signal sample circuit, pwm control circuit, driving electricity
Road；
The Buck type circuit topology includes: power switch tube Q3, buck inductor L2, battery filter capacitor C3, power
Diode D1；Wherein the anode of the drain electrode connection intermediate bus bar of power switch tube Q3, the source electrode of power switch tube Q3 connect decompression
The cathode of the first end of inductance L2, power diode D1, the of the second end connection battery filter capacitor C3 of buck inductor L2
One end, battery group anode；The anode of power diode D1, the second end of battery filter capacitor C3, battery group are just
The cathode of pole connection intermediate bus bar；
The voltage signal U of the drain electrode of the second signal sample circuit acquisition power switch tube Q3in2, current signal Iin2,
And the voltage signal U of buck inductor L2 second endout2, current signal Iout2, and collected signal is converted into corresponding number
Word amount signal；
The output end of the input terminal connection second signal sample circuit of the pwm control circuit, according to the voltage of digital quantity
Signal Uin2, current signal Iin2, voltage signal Uout2, current signal Iout2Generate corresponding pwm control signal；
The input terminal of second driving circuit connects pwm control circuit, and the output end of the second driving circuit connects power
The gate pole of switching tube Q3；Second driving circuit based on the received pwm control signal control power switch tube Q3 on-off.
The generation first control signal specifically refers to, MPPT strategy execution circuit digital quantity according to Uin1、Uout1、
Iin1、Iout1Judge Uout1It whether is more than preset maximum output voltage；Work as Uout1It is less than maximum output voltage, executes MPPT function
Can, generate first control signal；Work as Uout1More than maximum output voltage, MPPT strategy execution circuit waits a duty cycle
Afterwards, it repeats the above steps.
N number of power optimization device is respectively independent, does not need to communicate between each other.
It only needs to pass through between first power optimization device and power inverter, between N power optimization device and power inverter
Intermediate bus bar connection can be realized the concatenated voltage of the N number of power optimization device of transmission, current signal without data/address bus and become to power
Parallel operation.
Compared with prior art, tandem type MPPT energy management system advantage of the invention is:
(1) in the prime topology that the present invention uses, each solar battery array connects a power optimization device, and each power is excellent
Changing device only needs to track corresponding solar battery array peak power output, and corresponding solar battery array is made to work in maximum power point,
Solves the power regulation problem under distributed photovoltaic system is transmitted at a distance；
(2) by the series connection output of power optimization device in the prime topology that the present invention uses, the mistake of high pressure photovoltaic module is solved
With problem, while reducing the voltage stress of power device in power optimization device.Each power optimization device is mutually indepedent, does not need
Communication reduces the complexity of system line connection.
(3) only bus is needed to connect between front stage of the invention topology, does not need additionally to carry out data by bus communication
Transmission, realizes the light-weight design of energy resource system, has important engineering application value.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in description will be made simply below
It introduces, it should be apparent that, the accompanying drawings in the following description is one embodiment of the present of invention, and those of ordinary skill in the art are come
It says, without creative efforts, is also possible to obtain other drawings based on these drawings:
Fig. 1 is tandem type MPPT energy management system structural schematic diagram of the invention；
Fig. 2 is the power optimization device schematic diagram in energy management system of the invention；
Fig. 3 is the power inverter schematic diagram in energy management system of the invention；
In figure: 1, solar array；2, power optimization device；3, power inverter；4, battery group；5, distributed single
Member.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of tandem type MPPT energy management system, include: N number of solar battery array, phase
N number of power optimization device 2 together, power inverter 3, battery group 4.
The solar battery array, conversion solar can be direct current energy；
N number of power optimization device 2, respectively the first power optimization device to N power optimization device.In this application embodiment
In, the voltage rating of power optimization device 2 is 60V, peak power output 200W.N number of power optimization device 2 is respectively independent, mutually
Between do not need to communicate.The corresponding solar array 1 of one power optimization device 2, the input terminal of power optimization device electrically connect
Corresponding solar array 1 is connect, a distributed unit 5 is constituted, the output end of N number of power optimization device is sequentially connected in series.
By power optimization device 2, the output voltage of corresponding solar battery array is promoted, tracks corresponding solar array peak power, it is real
Now correspond to the maximum power output of solar array 1.
As shown in Fig. 2, the power optimization device 2 includes: Boost type circuit topology, the first signal sample circuit, MPPT plan
Slightly execution circuit and the first driving circuit.
The Boost type circuit topology includes: boost inductance L1, power switch tube Q1, power switch tube Q2, solar cell
Battle array filter capacitor C1, intermediate bus bar filter capacitor C2.Wherein the first end of boost inductance L1 is connecting corresponding solar battery array just
Pole, solar battery array filter capacitor C1 first end；The drain electrode of the second end connection power switch tube Q1 of boost inductance L1, power
The drain electrode of switching tube Q2；The first end of the source electrode connection intermediate bus bar filter capacitor C2 of power switch tube Q2；Intermediate bus bar filtering
The second end of capacitor C2, the source electrode of power switch tube Q2, the corresponding sun of second end connection of solar battery array filter capacitor C1 are electric
The cathode of Chi Zhen.
The voltage signal U of the first signal sample circuit acquisition boost inductance L1 first endin1, current signal Iin1, with
And the voltage signal U of the source electrode of power switch tube Q2out1, current signal Iout1, and collected signal is converted into corresponding number
Word amount signal.
MPPT strategy execution circuit input terminal is electrically connected the output end of the first sample circuit, MPPT strategy execution circuit number
Word amount according to Uin1、Uout1、Iin1、Iout1Judge Uout1It whether is more than preset maximum output voltage；Work as Uout1It is less than highest
Output voltage executes MPPT function, generates first control signal；Work as Uout1More than maximum output voltage, MPPT strategy executes electricity
After road waits a duty cycle, repeat the above steps.In this application embodiment, Uout1No more than power optimization device 2
Voltage rating 60V.
The input terminal of first driving circuit is electrically connected the output end of MPPT strategy execution circuit, the first driving circuit it is defeated
Outlet is electrically connected the gate pole of the gate pole of power switch tube Q1, power switch tube Q2；First driving circuit based on the received first
It controls signal and generates corresponding first driving signal, pass through the first driving signal on-off power switch tube Q1, power switch
Pipe Q2.
The input terminal of power inverter 3, power inverter is electrically connected the defeated of the first power optimization device by intermediate bus bar
The output end of outlet and N power optimization device, without data/address bus can be realized transmission the concatenated voltage of N number of power optimization device 2,
Current signal is to power inverter 3.Battery group 4 is electrically connected the output end of power inverter, passes through 3 turns of power inverter
Change the operating voltage that intermediate-bus voltage is battery group 4, the direct current energy for exporting 4 storage power converter 3 of battery group.
As shown in figure 3, the power inverter 3 includes: Buck type circuit topology, second signal sample circuit, PWM control
Circuit, driving circuit.
The Buck type circuit topology includes: power switch tube Q3, buck inductor L2, battery filter capacitor C3, power
Diode D1；Wherein the anode of the drain electrode connection intermediate bus bar of power switch tube Q3, the source electrode of power switch tube Q3 connect decompression
The cathode of the first end of inductance L2, power diode D1, the of the second end connection battery filter capacitor C3 of buck inductor L2
One end, battery group anode；The anode of power diode D1, the second end of battery filter capacitor C3, battery group are just
The cathode of pole connection intermediate bus bar.
The voltage signal U of the drain electrode of the second signal sample circuit acquisition power switch tube Q3in2, current signal Iin2,
And the voltage signal U of buck inductor L2 second endout2, current signal Iout2, and collected signal is converted into corresponding number
Word amount signal.
The output end of the input terminal connection second signal sample circuit of the pwm control circuit, according to the voltage of digital quantity
Signal Uin2, current signal Iin2, voltage signal Uout2, current signal Iout2Generate corresponding pwm control signal.
The input terminal of second driving circuit connects pwm control circuit, and the output end of the second driving circuit connects power
The gate pole of switching tube Q3；Second driving circuit based on the received pwm control signal control power switch tube Q3 on-off.
Compared with prior art, tandem type MPPT energy management system advantage of the invention is:
(1) in the prime topology that the present invention uses, each solar battery array connects a power optimization device 2, each power
Optimizer 2 only needs to track corresponding solar battery array peak power output, and corresponding solar battery array is made to work in maximum power
Point solves the power regulation problem under distributed photovoltaic system is transmitted at a distance；
(2) by the series connection output of power optimization device 2 in the prime topology that the present invention uses, the mistake of high pressure photovoltaic module is solved
With problem, while reducing the voltage stress of power device in power optimization device 2.Each power optimization device 2 is mutually indepedent, is not required to
It communicates, reduces the complexity of system line connection.
(3) only bus is needed to connect between front stage of the invention topology, does not need additionally to carry out data by bus communication
Transmission, realizes the light-weight design of energy resource system, has important engineering application value.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (6)
1. a kind of tandem type MPPT energy management system is, characterized by comprising: N number of solar battery array, identical N number of power
Optimizer, power inverter, battery group；
The solar battery array, conversion solar can be direct current energy；
N number of power optimization device, respectively the first power optimization device to N power optimization device；One power optimization device is corresponding
One solar array；The input terminal of power optimization device is electrically connected corresponding solar array, constitutes a distribution
Unit；The output end of N number of power optimization device is sequentially connected in series；By power optimization device, the defeated of corresponding solar battery array is promoted
Voltage out tracks corresponding solar array peak power, realizes the maximum power output of corresponding solar array；
Power inverter, the input terminal of power inverter by intermediate bus bar be electrically connected the first power optimization device output end and
The output end of N power optimization device；Intermediate-bus voltage is converted by power inverter as the input voltage of battery group；
Battery group is electrically connected the output end of power inverter, the direct current energy of storage power converter output.
2. tandem type MPPT energy management system as described in claim 1, which is characterized in that the power optimization device includes:
Boost type circuit topology, the first signal sample circuit, MPPT strategy execution circuit and the first driving circuit；
The Boost type circuit topology includes: boost inductance L1, power switch tube Q1, power switch tube Q2, solar battery array filter
Wave capacitor C1, intermediate bus bar filter capacitor C2；Wherein the first end of boost inductance L1 connects the anode, too of corresponding solar battery array
The first end of positive cell array filter capacitor C1；The drain electrode of the second end connection power switch tube Q1 of boost inductance L1, power switch
The drain electrode of pipe Q2；The first end of the source electrode connection intermediate bus bar filter capacitor C2 of power switch tube Q2；Intermediate bus bar filter capacitor
The second end connection of the second end of C2, the source electrode of power switch tube Q2, solar battery array filter capacitor C1 corresponds to solar battery array
Cathode；
The voltage signal U of the first signal sample circuit acquisition boost inductance L1 first endin1, current signal Iin1, Yi Jigong
The voltage signal U of the source electrode of rate switching tube Q2out1, current signal Iout1, and collected signal is converted into corresponding digital quantity
Signal；
MPPT strategy execution circuit input terminal is electrically connected the output end of first sample circuit, is believed according to the voltage of digital quantity
Number Uin1、Uout1With digital quantity current signal Iin1、Iout1Generate first control signal；
The input terminal of first driving circuit is electrically connected the output end of MPPT strategy execution circuit, the output end of the first driving circuit
It is electrically connected the gate pole of power switch tube Q1, the gate pole of power switch tube Q2；The first control based on the received of first driving circuit
Signal generates corresponding first driving signal, passes through the first driving signal on-off power switch tube Q1, power switch tube Q2.
3. tandem type MPPT energy management system as described in claim 1, which is characterized in that the power inverter includes:
Buck type circuit topology, second signal sample circuit, pwm control circuit, driving circuit；
The Buck type circuit topology includes: power switch tube Q3, buck inductor L2, battery filter capacitor C3, two pole of power
Pipe D1；Wherein the anode of the drain electrode connection intermediate bus bar of power switch tube Q3, the source electrode of power switch tube Q3 connect buck inductor
The cathode of the first end of L2, power diode D1, the first end of the second end connection battery filter capacitor C3 of buck inductor L2,
The anode of battery group；The anode connection of the anode of power diode D1, the second end of battery filter capacitor C3, battery group
The cathode of intermediate bus bar；
The voltage signal U of the drain electrode of the second signal sample circuit acquisition power switch tube Q3in2, current signal Iin2, and
The voltage signal U of buck inductor L2 second endout2, current signal Iout2, and collected signal is converted into corresponding digital quantity
Signal；
The output end of the input terminal connection second signal sample circuit of the pwm control circuit, according to the voltage signal of digital quantity
Uin2, current signal Iin2, voltage signal Uout2, current signal Iout2Generate corresponding pwm control signal；
The input terminal of second driving circuit connects pwm control circuit, and the output end of the second driving circuit connects power switch
The gate pole of pipe Q3；Second driving circuit based on the received pwm control signal control power switch tube Q3 on-off.
4. tandem type MPPT energy management system as claimed in claim 2, which is characterized in that the generation first control signal
Specifically refer to, MPPT strategy execution circuit digital quantity according to Uin1、Uout1、Iin1、Iout1Judge Uout1Whether be more than it is preset most
High output voltage；Work as Uout1It is less than maximum output voltage, executes MPPT function, generates first control signal；Work as Uout1More than most
High output voltage repeats the above steps after MPPT strategy execution circuit waits a duty cycle.
5. tandem type MPPT energy management system as described in claim 1, which is characterized in that N number of power optimization device is each
From independence, do not need to communicate between each other.
6. tandem type MPPT energy management system as described in claim 1, which is characterized in that the first power optimization device and power
It only needs to connect by intermediate bus bar between converter, between N power optimization device and power inverter, is not necessarily to data/address bus
It realizes and transmits the concatenated voltage of N number of power optimization device, current signal to power inverter.
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| CN110649693A (en) * | 2019-10-16 | 2020-01-03 | 上海空间电源研究所 | Space high reliability MPPT does not adjust generating line system |
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