CN110120679A - A kind of family coupled with photovoltaic DC-to-AC converter DC side photovoltaic energy storage converter - Google Patents
A kind of family coupled with photovoltaic DC-to-AC converter DC side photovoltaic energy storage converter Download PDFInfo
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- CN110120679A CN110120679A CN201910438618.9A CN201910438618A CN110120679A CN 110120679 A CN110120679 A CN 110120679A CN 201910438618 A CN201910438618 A CN 201910438618A CN 110120679 A CN110120679 A CN 110120679A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 21
- 238000013519 translation Methods 0.000 claims abstract description 41
- 238000004422 calculation algorithm Methods 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000009466 transformation Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000011217 control strategy Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H02J3/385—
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention discloses a kind of family photovoltaic energy storage converters of photovoltaic DC-to-AC converter DC side coupling, including cascade first DC/DC translation circuit and the 2nd DC/DC translation circuit；The input terminal of the first DC/DC translation circuit is connected with photovoltaic module array, and the output end of the 2nd DC/DC translation circuit is connected with photovoltaic DC-to-AC converter, and the common DC bus end of the first and second DC/DC translation circuits is connected with battery；The common DC bus parallel filtering capacitor and draw a road port it is in parallel with battery；The first DC/DC converter is for executing MPPT control algolithm, and the 2nd DC/DC converter is for executing PV simulation algorithm.Advantage: it is particularly suitable for increasing energy storage device in existing photovoltaic generating system, photovoltaic energy is stored in battery by it by dc-couple mode, and structure is simple, improves the conversion efficiency of system, and operation can be coupled with photovoltaic DC-to-AC converter existing in system, save investment.
Description
Technical field
The present invention relates to a kind of family coupled with photovoltaic DC-to-AC converter DC side photovoltaic energy storage converters, belong to power electronics
Application technology technical field.
Background technique
It there has been extensive use for the exchange side coupled tank current transformer that storage family is developed with photovoltaic market, due to being
Energy accumulation current converter and photovoltaic DC-to-AC converter in system mostly use Grid-connected Control Strategy, and thus bring significant drawback is in grid power blackout
Even if when photovoltaic side have energy that can not be stored in battery.A kind of improved strategy is the energy storage unsteady flow when grid power blackout
Device controls a switch and is detached from domestic electric network and utility grid, and voltage is established in domestic electric network after energy accumulation current converter starting,
Photovoltaic DC-to-AC converter subsequent start-up, since energy accumulation current converter carries out U/f control at this time, incite somebody to action oneself in photovoltaic energy feed-in domestic electric network
Row carries out charge and discharge to battery according to photovoltaic and bearing power situation and reaches power-balance.But this method passes through DC/DC, DC/
The transformation of AC, AC/DC three-level, increases the loss of system.And the energy storage scheme for exchanging side coupling requires energy accumulation current converter and electricity
The power in pond has to be larger than photovoltaic DC-to-AC converter power just and can guarantee that system is steadily run.In addition there is a kind of widely used mixing
Inverter, this inverter roll into one photovoltaic, battery, alternating current and the port of load, are controlled by single MCU chip all
The energy of port flows to, but this scheme is suitable for new installation user, will be original for the photovoltaic power generation user of storage
Photovoltaic DC-to-AC converter is substituted for mixing inverter and undoubtedly increases cost of investment, and causes the waste of equipment.It is logical that there are also one kind
Cross photovoltaic charger first by power storage in the battery, then pass through the scheme of an inverter output AC electricity, this scheme
In inverter must use dedicated battery inverter, general photovoltaic DC-to-AC converter lead to it due to its included MPPT function
It can not be directly connected to battery, equally will cause the discarded of original photovoltaic DC-to-AC converter for storage photovoltaic power generation user.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of and photovoltaic DC-to-AC converter direct current is provided
The family photovoltaic energy storage converter of side coupling.
In order to solve the above technical problems, the family that the present invention provides a kind of photovoltaic DC-to-AC converter DC side coupling is become with photovoltaic energy storage
Parallel operation, which is characterized in that including cascade first DC/DC translation circuit and the 2nd DC/DC translation circuit；
The input terminal of the first DC/DC translation circuit is connected with photovoltaic module array, the 2nd DC/DC translation circuit it is defeated
Outlet is connected with photovoltaic DC-to-AC converter, and the common DC bus end of the first and second DC/DC translation circuits is connected with battery；The public affairs
Common DC bus parallel filtering capacitor and draw a road port it is in parallel with battery；The first DC/DC converter is for executing
MPPT control algolithm, the 2nd DC/DC converter is for executing PV simulation algorithm.
Further, the first DC/DC translation circuit is BUCK circuit, and BUCK circuit detects the input of photovoltaic assembly array
Electric current and voltage, execute MPPT control algolithm, the MPPT control algolithm is used to track the maximum power of photovoltaic module array,
It monitors whether battery reaches maximum charging current simultaneously, current power is kept if reaching battery maximum charging current, it is no longer past
Increase powerful direction disturbance, otherwise always toward the powerful direction disturbance of increasing.
Further, the 2nd DC/DC translation circuit is BOOST circuit, and BOOST circuit acquires its output end current
I2, value of feedback as closed-loop current control.
Further, the PV simulation algorithm is used to carry out closed-loop control to output electric current, and the output electric current is closed
The given value of current value I of ring control2 *Are as follows:
In formula: UbFor cell voltage, U2For output voltage, UmFor virtual maximum power point voltage, the P of setting*It is defeated to give
Power out.
A kind of control method of the family photovoltaic energy storage converter of photovoltaic DC-to-AC converter DC side coupling, which is characterized in that packet
Include following steps:
1) judgement carries out whether grid-connected photovoltaic DC-to-AC converter has the function of off-grid operation with converter combined operating, if it is not,
Successively execute step 21) -23), if so, successively executing step 31) -33)；
21) electric current and voltage of the first DC/DC translation circuit acquisition photovoltaic module array input terminal executes MPPT control and calculates
Method guarantees the maximum power generation efficiency of photovoltaic module array, while the charging current of the first DC/DC converter monitoring battery, with most
The big upper limit for allowing charging current to calculate photovoltaic module array output power；
22) the 2nd DC/DC translation circuit acquires it and exports electric current, voltage and input side electric current, voltage, executes PV simulation and calculates
Method simulates the output characteristics of photovoltaic module normally to start photovoltaic DC-to-AC converter and control the output work of the 2nd DC/DC translation circuit
Rate, while the discharge current of the 2nd DC/DC converter monitoring battery, calculate the 2nd DC/DC transformation with maximum allowable discharge current
The upper limit of output power of circuit；
23) when grid cut-off, the 2nd DC/DC translation circuit stops working, and the first DC/DC translation circuit still executes MPPT control
Photovoltaic energy is stored in battery, while whether having reached maximum charging current to determine whether needs according to battery by algorithm processed
Limit the input power of photovoltaic module.
31) judge photovoltaic DC-to-AC converter whether off-grid operation, if it is not, converter is by step 21) -23) hold, if so, continue to
Lower progress；
32) the 2nd DC/DC translation circuit acquires output voltage values, and closed-loop control output voltage is steady state value, the first DC/DC
Translation circuit still executes MPPT control algolithm, while whether having reached maximum charging current to determine whether needing to limit according to battery
The input power of photovoltaic module processed.
Further, the MPPT control algolithm is used to track the maximum power of photovoltaic module array, while monitoring battery
Whether reach maximum charging current, current power is kept if reaching battery maximum charging current, no longer toward the powerful side of increasing
To disturbance, otherwise always toward the powerful direction disturbance of increasing.
Further, the PV simulation algorithm is used to control the given value of current value I that output electric current carries out closed loop control2 *, as follows
Formula:
In formula: UbFor cell voltage, U2For output voltage, UmFor virtual maximum power point voltage, the P of setting*It is defeated to give
Power out.
Advantageous effects of the invention:
The present invention provides the photovoltaic energy storage converter that a kind of family DC side couples, it is particularly suitable for sending out in existing photovoltaic
Increase energy storage device in electric system, photovoltaic energy is stored in battery by dc-couple mode, structure is simple, improves and is
The conversion efficiency of system, and investment can be saved with photovoltaic DC-to-AC converter combined operating existing in system.Due to the converter with
Photovoltaic DC-to-AC converter independent control still is able to for photovoltaic energy being filled in battery, improve without establishing communication in grid cut-off
The utilization rate of photovoltaic energy.And if it is used cooperatively with there is the photovoltaic DC-to-AC converter of off-network function, light can be stabilized well
The fluctuation for lying prostrate input power, improves the off-network load capacity and stability of original system.
Detailed description of the invention
Fig. 1 is the circuit topology figure of converter example of the present invention；
Fig. 2 is control block diagram when example shown in Fig. 1 is incorporated into the power networks；
Fig. 3 is the given method that P* when grid-connected power is zero is controlled in Fig. 2 control block diagram；
Fig. 4 is the given method that P* when battery current is steady state value is controlled in Fig. 2 control block diagram；
Fig. 5 is control logic when preferentially charging the battery；
Control block diagram when Fig. 6 is example off-grid operation shown in Fig. 1；
Fig. 7 is control block diagram when example shown in Fig. 1 only charges.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of family coupled with photovoltaic DC-to-AC converter DC side photovoltaic energy storage converter comprising: first
DC/DC translation circuit 101, is BUCK circuit, and the 2nd DC/DC translation circuit 102 is BOOST circuit.BUCK translation circuit
Input terminal " PV+ " and " PV- " connect photovoltaic module array, the input terminal of output end and BOOST translation circuit is direct-connected, BOOST
The output end INV+ and INV- of translation circuit is connected with the input terminal of photovoltaic DC-to-AC converter.BUCK translation circuit and BOOST transformation electricity
Common DC bus the leading-out terminal BAT+ and BAT- on road are connected with battery.Two DC/DC transformation electricity as shown in 101 and 102
Road has collectively constituted a kind of family coupled with photovoltaic DC-to-AC converter DC side photovoltaic energy storage converter 103 of the present invention.
As shown in Fig. 2, BUCK circuit detects the electric current and voltage of PV input when photovoltaic inverter grid-connected operation, execute
MPPT algorithm tracks maximum power, while also whether monitoring battery reaches maximum charging current, if reaching battery maximum charge electricity
Stream then keeps current power, no longer toward the powerful direction disturbance of increasing.BOOST circuit acquires output end current I2, execute electric current
Closed-loop control, wherein the given value I of electric current2 *It is obtained using PV simulation algorithm, as shown in formula (1):
Wherein: I2 *For the given value for exporting electric current；
UmIt should ensure that it in photovoltaic DC-to-AC converter PV by software set for the virtual corresponding voltage value of PV maximum power point
In the fully loaded MPPT following range of input terminal；
UbFor input voltage, obtained by measurement；
U2For output voltage, obtained by measurement；
P*To give output power, given according to specific use demand.
Fig. 3 is to control P when grid-connected power is zero*Calculation method, that is, acquire the current value of grid entry point, and calculate wattful power
Rate is used as P by exporting after pi regulator*, being so able to maintain grid entry point power is zero.
P when Fig. 4 is control battery constant current charging-discharging*Calculation method, i.e., acquisition battery current pass through closed-loop control, output
As P*, the charging and discharging currents for being so able to maintain battery are constant.Further, it is possible to pass through the value for changing given charging and discharging currents
It preferentially charges the battery or preferential powering load to distribute photovoltaic energy.If preferential powering load, as long as given battery
Charging current be 0, if preferentially charging the battery, control logic is as shown in Figure 5: it is electric whether battery reaches maximum charge
Stream, if then judging whether BOOST output power has reached maximum value, increases output power if not reaching, limits if reaching
Input side MPPT power processed；If electric current does not reach maximum charging current, judge whether BOOST output power is 0, if 0
Current duty cycle is then kept, if not 0 reduces output power.
By above control method, the energy difference of both BOOST and BUCK converters will cause the voltage of DC bus
Fluctuation, finally will reach power and energy balance by the charge and discharge of battery.Since the energy of two translation circuits is all unidirectional
It flows, BUCK circuit control input power, BOOST circuit control output power, BUCK circuit should monitor the charging electricity of battery
Stream limits input power when charging current is more than maximum permissible value, and BOOST circuit should monitor the discharge power of battery, put
Electric current limits output power when being more than maximum permissible value.
Control block diagram when Fig. 6 is off-grid operation.Photovoltaic DC-to-AC converter is required to have off-grid operation function under this method of operation,
Such as the inverter sold on Japanese market is just generally configured with the function.The side of photovoltaic DC-to-AC converter exchange at this time operates in U/f mode,
Constant voltage and frequency are exported, DC side MPPT function is closed.Photovoltaic energy storage converter of the present invention should correspondingly change
Become control strategy, BOOST translation circuit closes PV analog functuion, makes outlet side voltage constant by closed-loop control, such as right
400V DC is controllable in the inverter of single-phase output 220V AC.BUCK converter still executes MPPT control strategy.
Fig. 7 is that photovoltaic energy storage converter of the present invention connects the inverter for not having off-network function in grid cut-off
Used control strategy.BOOST converter duty ratio remains 0, BUCK converter and executes MPPT control strategy, until battery
It is full of.At city power recovery, preferentially the energy of battery can be released, improve the utilization rate of photovoltaic energy.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of family photovoltaic energy storage converter of photovoltaic DC-to-AC converter DC side coupling, which is characterized in that including cascade first
DC/DC translation circuit and the 2nd DC/DC translation circuit；
The input terminal of the first DC/DC translation circuit is connected with photovoltaic module array, the output end of the 2nd DC/DC translation circuit
It is connected with photovoltaic DC-to-AC converter, the common DC bus end of the first and second DC/DC translation circuits is connected with battery；It is described public straight
It flows bus parallel filtering capacitor and one road port of extraction is in parallel with battery；The first DC/DC converter is for executing MPPT control
Algorithm processed, the 2nd DC/DC converter is for executing PV simulation algorithm.
2. the family photovoltaic energy storage converter of photovoltaic DC-to-AC converter DC side coupling according to claim 1, which is characterized in that
The first DC/DC translation circuit is BUCK circuit, and BUCK circuit detects the electric current and voltage of photovoltaic assembly array input, is executed
MPPT control algolithm, the MPPT control algolithm are used to track the maximum power of photovoltaic module array, while whether monitoring battery
Reach maximum charging current, current power is kept if reaching battery maximum charging current, is no longer disturbed toward the powerful direction of increasing
It is dynamic, otherwise always toward the powerful direction disturbance of increasing.
3. the family photovoltaic energy storage converter of photovoltaic DC-to-AC converter DC side coupling according to claim 1, which is characterized in that
The 2nd DC/DC translation circuit is BOOST circuit, and BOOST circuit acquires its output end current I2, as closed-loop current control
Value of feedback.
4. the family photovoltaic energy storage converter of photovoltaic DC-to-AC converter DC side coupling according to claim 3, which is characterized in that
Export the given value of current value I of closed-loop current control2 *It is obtained using PV simulation algorithm, such as following formula:
In formula: UbFor cell voltage, U2For output voltage, UmFor virtual maximum power point voltage, the P of setting*To give output work
Rate.
5. a kind of controlling party of the family photovoltaic energy storage converter based on photovoltaic DC-to-AC converter DC side described in claim 1 coupling
Method, which comprises the steps of:
1) judgement carries out whether grid-connected photovoltaic DC-to-AC converter has the function of off-grid operation with converter combined operating, if it is not, successively
Execute step 21) -23), if so, successively executing step 31) -33)；
21) electric current and voltage of the first DC/DC translation circuit acquisition photovoltaic module array input terminal, executes MPPT control algolithm,
Guarantee the maximum power generation efficiency of photovoltaic module array, while the charging current of the first DC/DC converter monitoring battery, is permitted with maximum
Perhaps charging current calculates the upper limit of photovoltaic module array output power；
22) the 2nd DC/DC translation circuit acquires it and exports electric current, voltage and input side electric current, voltage, executes PV simulation algorithm,
Simulate photovoltaic module output characteristics with normally start photovoltaic DC-to-AC converter and control the 2nd DC/DC translation circuit output power,
The discharge current of the battery of 2nd DC/DC converter monitoring simultaneously, calculates the 2nd DC/DC translation circuit with maximum allowable discharge current
The upper limit of output power；
23) when grid cut-off, the 2nd DC/DC translation circuit stops working, and the first DC/DC translation circuit still executes MPPT control and calculates
Photovoltaic energy is stored in battery, while whether having reached maximum charging current to determine whether needing to limit according to battery by method
The input power of photovoltaic module；
31) judge photovoltaic DC-to-AC converter whether off-grid operation, if it is not, converter is by step 21) -23) hold, if so, continue downwards into
Row；
32) the 2nd DC/DC translation circuit acquires output voltage values, and closed-loop control output voltage is steady state value, the first DC/DC transformation
Circuit still executes MPPT control algolithm, while whether having reached maximum charging current to determine whether needing to limit light according to battery
Lie prostrate the input power of component.
6. control method according to claim 5, which is characterized in that the MPPT control algolithm is for tracking photovoltaic module
The maximum power of array, while monitoring whether battery reaches maximum charging current, it is kept if reaching battery maximum charging current
Current power, no longer toward powerful direction disturbance is increased, otherwise always toward the powerful direction disturbance of increasing.
7. control method according to claim 5, which is characterized in that the PV simulation algorithm is used to carry out output electric current
Closed-loop control, the output electric current carry out the given value of current value I of closed loop control2 *Are as follows:
In formula: UbFor cell voltage, U2For output voltage, UmFor virtual maximum power point voltage, the P of setting*To give output work
Rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910438618.9A CN110120679B (en) | 2019-05-24 | 2019-05-24 | Household photovoltaic energy storage converter coupled with direct current side of photovoltaic inverter |
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| CN201910438618.9A CN110120679B (en) | 2019-05-24 | 2019-05-24 | Household photovoltaic energy storage converter coupled with direct current side of photovoltaic inverter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293717A (en) * | 2020-02-24 | 2020-06-16 | 阳光电源股份有限公司 | Control method and system of optical storage direct current coupling system |
| CN111711360A (en) * | 2020-06-04 | 2020-09-25 | 上海交通大学 | Energy-sustaining feedback type high-power voltage reduction circuit and control method thereof |
| CN116247707A (en) * | 2023-02-17 | 2023-06-09 | 深圳先进储能材料国家工程研究中心有限公司 | Battery pack control method based on illumination intensity in mixed storage state |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204886384U (en) * | 2015-07-28 | 2015-12-16 | 北京京仪椿树整流器有限责任公司 | Integrative terminal of domestic photovoltaic power generation energy storage of miniwatt |
| CN105186672A (en) * | 2015-10-21 | 2015-12-23 | 上海正泰电源系统有限公司 | Hybrid circuit topology structure |
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2019
- 2019-05-24 CN CN201910438618.9A patent/CN110120679B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204886384U (en) * | 2015-07-28 | 2015-12-16 | 北京京仪椿树整流器有限责任公司 | Integrative terminal of domestic photovoltaic power generation energy storage of miniwatt |
| CN105186672A (en) * | 2015-10-21 | 2015-12-23 | 上海正泰电源系统有限公司 | Hybrid circuit topology structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293717A (en) * | 2020-02-24 | 2020-06-16 | 阳光电源股份有限公司 | Control method and system of optical storage direct current coupling system |
| CN111293717B (en) * | 2020-02-24 | 2021-11-02 | 阳光电源股份有限公司 | Control method and system of optical storage direct current coupling system |
| CN111711360A (en) * | 2020-06-04 | 2020-09-25 | 上海交通大学 | Energy-sustaining feedback type high-power voltage reduction circuit and control method thereof |
| CN116247707A (en) * | 2023-02-17 | 2023-06-09 | 深圳先进储能材料国家工程研究中心有限公司 | Battery pack control method based on illumination intensity in mixed storage state |
| CN116247707B (en) * | 2023-02-17 | 2024-02-06 | 深圳先进储能材料国家工程研究中心有限公司 | Battery pack control method based on illumination intensity in mixed storage state |
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| CN110120679B (en) | 2023-02-28 |
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