CN107872093A - The equipment that hybrid power is provided using multiphase alternating method by solar energy - Google Patents
The equipment that hybrid power is provided using multiphase alternating method by solar energy Download PDFInfo
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- CN107872093A CN107872093A CN201610851486.9A CN201610851486A CN107872093A CN 107872093 A CN107872093 A CN 107872093A CN 201610851486 A CN201610851486 A CN 201610851486A CN 107872093 A CN107872093 A CN 107872093A
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- Prior art keywords
- power
- battery unit
- current
- load side
- solar
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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
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
Abstract
The invention discloses it is a kind of using multiphase alternating method by solar energy provide hybrid power equipment, comprising：Solar power generation portion, makes solar power generation；Battery unit, store and electric current is provided；Power circuit, electrically connect solar power generation portion and battery unit；And the load side comprising consumption electric power, and the power end to be generated electricity for routine use；Power supply control, control power supply, loop and provide electric current from solar power generation portion to battery unit/load side/power end, either from power end to battery unit or load side；Wherein, the design of power circuit part is in order to carry out charge/discharge to battery unit by multiphase alternating method, so as to reduce or improve voltage.The present invention is by the chiastic application of multiphase, the demand of reduction peak power during battery unit charge/discharge.
Description
Technical field
It is more particularly to a kind of to lead to using multiphase alternating method the present invention relates to the equipment that a kind of power supply field provides hybrid power
Cross the equipment that solar energy provides hybrid power.
Background technology
The raising of economic growth recently, industrial expansion and social activities all potentially improves the consumption of the energy.
There is various substantial challenges for the expansion plan of generating equipment.The amplification challenge of generating equipment, such as build power plant, factory
What is taken up an area is intrinsic, and pollution problem etc. is both needed to put into substantial contribution.Moreover, the use to existing fossil fuel also can be progressively
The problem of more is produced, such as pollution problem and the shortage problem of fossil fuel.Therefore, people start progressively to consider alternative energy source
Development.
So far, the application of diversity system with topological structure and is further associated systematic difference and had fast
The development of speed.The demand of electric power and supply turn into a problem of maximum with social industrial expansion.But the demand of electric power
Concern of the people to emerging alternative energy source battery unit energy-storage system is caused more than supply and the shortage of the energy.To direct current
More efficiently use and need battery unit energy-storage system.The energy-storage system can be stored the energy caused by direct current,
And use when needed.And this needs to be set come assembled battery energy-storage system and generating associated therewith with direct current electric converter
It is standby.
One conventional DC current transformer is improved or dropped by the manual component of a sensor and a capacitor
The DC voltage of low input.These manual components are closely related as a part and frequency for whole system.It is because large-scale manual
Component is used when DC converter operates under low switching frequency.So, this will cause a series of problem, such as whole body
It is the increase of volume and volume, and the reduction of DC transformer efficiency.
Moreover, the structure design applied to the bi-directional DC-DC converter of charge-discharge battery unit be according to cell voltage with
And direct-current chain terminal.When battery voltage is close to DC link terminal voltage or its half, two power are partly led
Body can be used to form a bi-directional DC-DC converter, so as to the running that is depressured and boosted.
But high tension battery portion price, and bi-directional DC-DC converter is to be operated in a continuous mode.Largely
Handoff loss can cause radiator body increase and efficiency reduction.
In order to reduce system cost, battery voltage is the smaller the better.But, it is also desirable to more complicated circuit arrangement.One
As in the case of, this system includes a booster and eight power semiconductor devices, makes system extremely complex, while can also lead
Bigger loss and bigger specification of equipment are caused, while can also improve the price of bi-directional DC-DC converter.
Also, current transformer during the charge/discharge of battery unit is operated with non-continuous mode, the increase of capacity
Also peak value can be improved, battery life can be reduced during lasting charge/discharge.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or implying the information structure in any form.
With reference to technological document
Patent document
(patent document 1) South Korea bulletin distribution registration number 10-2010-0098870 (on September 10th, 2010)
The content of the invention
Technical problem
In summary, present invention aim to address above mentioned problem, there is provided is carried using multiphase alternating method using solar energy
For the equipment of hybrid power.The reliability of raising system is set by a very simple circuit, manufacturing cost is dropped to most
It is low, the demand of peak power is reduced, increases the capacity of battery unit so as to prevent the reduction in battery unit life-span.
Another object of the present invention provides electric power in the peak period by battery unit and solar panels, so as to reduce
The electricity charge, also reduce load, the i.e. load of power generator.
Another purpose is to provide uninterrupted power source, because it can utilize solar energy when power-off/failure occurs
With the joint of battery unit power supply, or single solar energy, single battery unit power supply provides bearing power.
Another purpose is by the way that the pulsating current that the battery unit of battery life is influenceed in charge/discharge current is down to most
It is low, so as to extend the life-span of battery unit.
Another purpose is to use the soft power switch of two-way DC-DC current transformer (Soft Switching Power
Supply), so that the efficient system is almost without any switch cost.
The technical purpose of the present invention is not restricted to above-mentioned purpose.By following description, can be best understood from
It differs markedly from the reason for ordinary skill, and understands other technical purposes for not making to be particularly described.
The solution of problem
The invention provides it is a kind of using multiphase alternating method by solar energy provide hybrid power equipment, comprising：The sun
Energy Power Generation Section, makes solar power generation；Battery unit, store and electric current is provided；Power circuit, electrically connect solar power generation portion and storage
Battery unit；And the load side comprising consumption electric power, and the power end to be generated electricity for routine use；Power supply control, control power supply,
Loop simultaneously provides electric current from solar power generation portion to battery unit, load side, power end, or from power end to battery unit or
Person's load side；Wherein, the design of power circuit part be in order to by multiphase alternating method come to battery unit carry out charge/discharge,
So as to reduce or improve voltage.
The equipment provided by the invention for providing hybrid power by solar energy using multiphase alternating method, power circuit part is also
Including：Unidirectional boost converter, when being connected to solar power generation portion, by handover operation, control electric current output changes
Maximum power point, at the same also keep caused by Current Voltage it is constant；Direct-current chain terminal, it is being connected to unidirectional boost converter
When, damper changes the voltage of battery unit and load side；Frequency converter, when being connected to direct-current chain terminal, by direct current
Alternating current is converted into, and is provided to load side and either power end or converts alternating current to direct current, and by it from electricity
Source provides and arrives battery unit end, while harmonic carcellation ripple；Interface reactor, it is being placed between frequency converter and power end
When, it will interface is provided and controls supply of the supply harmonic to load side；And bi-directional DC-DC converter, it is straight being connected to
When flowing between end of link and battery unit, low-tension current will be provided to battery unit, so that battery unit can be applied to
Low pressure program；Also, provide high-tension current from battery unit part to direct-current chain terminal.
The equipment provided by the invention that hybrid power is provided using multiphase alternating method by solar energy, bi-directional DC-DC conversion
The composition of device includes：The 1st switching mode being at least made up of two unidirectional boost converters, wherein each unidirectional boost converter is simultaneously
It is linked togather, towards battery unit part, when carrying out zero-current switching in non-contiguous mode, comes progressively as buck converter
Reduce voltage；And the unidirectional switching mode of boost converter quantity identical the 2nd with the 1st switching mode, and by two lists
It is connected in parallel to boost converter, towards battery unit part, when carrying out zero-current switching in non-contiguous mode, as liter
Buckling parallel operation steps up voltage.
The equipment provided by the invention that hybrid power is provided using multiphase alternating method by solar energy, bi-directional DC-DC conversion
Device also includes：A set of capacitor, second set of exchanger is connected in parallel in, and zero-pressure conversion can be carried out.
The equipment provided by the invention that hybrid power is provided using multiphase alternating method by solar energy, bi-directional DC-DC conversion
Device also walk including：A set of smooth group of L-C, is positioned between the 1st switching mode and the 2nd switching mode, battery unit is placed on separately
Side, after zero current and Zero voltage transition operation, in battery unit charge/discharge, the pulsating current of battery unit is reduced,
Smooth out electric current and switch to constant current.
The equipment provided by the invention for providing hybrid power by solar energy using multiphase alternating method, power supply control are carried out such as
Lower control running：The conversion for the charge mode for ensureing to pass through battery at night is powered, from power end to battery unit end and
Load side, after battery is fully charged, the offer of electricity is from power end to load side；On daytime, if solar power generation
Electric current caused by portion is less than load side, and load side will be provided to from electric energy caused by solar power generation portion and power end；If
Electric current caused by solar power generation portion is higher than load side, and electric energy will be provided to load side and power supply from solar power generation portion
End；Occur if any power failure phenomenon, on daytime, if the generated energy in solar power generation portion is less than load side, by solar power generation portion
And electricity caused by battery unit will be provided to load side；If the generated energy in solar power generation portion is higher than load side, too
Electric energy caused by positive energy Power Generation Section will be provided to load side and battery unit；If on daytime, solar power generation portion generates electricity
Go wrong, then go to supply power to load side from battery unit or power end.
The equipment for providing hybrid power by solar energy using multiphase alternating method, power circuit include：It is connected to power end
Breaker, enable power supply control part have a power failure when open breaker；Also, power end and inverter output terminal are synchronous
Operating, in service restoration, breaker is automatically reconnected.The power circuit of the present invention is also connected to including one
Beneficial effect
Solution of the invention according to problem, there is provided this provides setting for hybrid power using multiphase alternating method using solar energy
It is standby.The reliability of raising system is set by a very simple circuit, manufacturing cost is preferably minimized, reduces peak power
Demand.Although the capacity of battery unit can increase, the reduction in battery unit life-span can be prevented.
The equipment of the present invention provides electric power in the peak period by battery unit and solar panels, so as to reduce the electricity charge,
Load, the i.e. load of power generator are also reduced simultaneously.
The equipment can provide uninterrupted power source.Because it can utilize solar energy and battery when power-off/failure occurs
The joint of portion's power supply, either single solar energy or individually battery unit power supply offer bearing power.
The equipment can minimize the pulsating current for the battery unit that battery life is influenceed in charge/discharge current, so as to
Extend the battery unit life-span.
In addition, the equipment can make the generation of efficient system almost without any switch cost, because two-way DC-DC unsteady flow
Device is soft power switch.
Brief description of the drawings
Fig. 1 is the block diagram of the present invention, it is shown that an application multiphase alternating method provides hybrid power using solar energy
Equipment.
Fig. 2 is the circuit diagram of the present invention, it is shown that the power circuit part of the equipment.
Fig. 3 is the oscillogram of the present invention, it is shown that the conversion of the two-way DC-DC converter of the power circuit of the equipment
Feature.(a) direct-cut operation oscillogram is represented；(b) no-voltage circuit conversion oscillogram is represented.
Fig. 4 is the oscillogram of the present invention, it is shown that the different operational characteristics of the device power supply (DPS) circuit.
Fig. 5 is the flow chart of the present invention, it is shown that the different operational characteristics of the equipment power supply control.
Embodiment
Optimum implementation and accompanying drawing will be described in detail below, including goal of the invention, Resolving probiems
Technical scheme, and benefit efficiency.According to the specific descriptions and accompanying drawing, can definitely other additional purposes of the invention,
Advantage and feature.
Preferred embodiment of the invention and accompanying drawing are as follows：
Fig. 1 to Fig. 5 specifically show the construction and design of equipment, and Fig. 1 is the block diagram of the present invention, it is shown that an application
The equipment that multiphase alternating method provides hybrid power using solar energy；Fig. 2 is the circuit diagram of the present invention, it is shown that the electricity of the equipment
Source circuit part；Fig. 3 is the oscillogram of the present invention, it is shown that the two-way DC-DC conversion of the power circuit part of the equipment
The salient feature of device；Fig. 4 is the oscillogram of the present invention, it is shown that the different operational characteristics of the power circuit part of the equipment；Fig. 5
It is the flow chart of the present invention, it is shown that the different operational characteristics of the equipment power supply control.
As shown in figure 1, the equipment includes solar power generation portion 100, battery unit 200, power circuit 300, and power supply
Control 400.
Solar power generation portion 100 is made up of one group of multiple solar panels and generated electricity in the daytime from solar power generation.
Battery unit 200 is stored and powered.The use in low tension battery portion can reduce cost.For example, according to solar energy
The power of Power Generation Section 100 is 350-400V.And the power of battery unit 200 is 50-70V.Therefore, it is necessary to pass through power circuit
300 carry out the lifting of voltage, so as to carry out charge/discharge to low-voltage storage battery portion.
Power circuit 300 connects solar power generation portion 100, battery unit 200, load side 10, and a power end 20,
Generated electricity to typically use.Load side 10 can be general family, shopping centre or factory, and power end 20 can be electric power
Company, it periodically provides substantial amounts of electric power using power transmission network.
As shown in Fig. 2 the power circuit 300 of the present invention is further observed.The power circuit 300 includes one
Unidirectional boost converter 310, a direct-current chain terminal 320, a frequency converter 330, an interface reactor 340, and one
Bi-directional DC-DC converter 350.
The unidirectional boost converter is connected to solar power generation portion 100, and by the output of handover operation control electric current
The maximum power point of change.Meanwhile it can make voltage keep steady by conversion operation between maximum voltage and minimum voltage
It is fixed.Because unidirectional boost converter 310 is made up of Cs, Ls, Qs and Ds, solar power generation can be made by MPPT maximum power point tracking
Reach maximum, while be passed to direct-current chain terminal 320.
Direct-current chain terminal 320 is connected with unidirectional boost converter 310 and buffer battery portion 200 and the voltage of load side 10
Change.That is, direct-current chain terminal 320 is by CdcComposition, is connected to unidirectional boost converter 310, solar powered end, frequency converter
330, and bi-directional DC-DC converter 350, battery unit charge/discharge circuit end, and play a part of buffered DC voltage.Such as,
The steep rise and fall of load can cause the drastically change of voltage in power generation process, and the direct-current chain terminal can keep voltage
It is stable.
Frequency converter 330 is connected to direct-current chain terminal 320, direct current energy is transformed into AC energy, and provide it to
Alternating current either power end 20 or is transformed into direct current by load side 10, and it is provided to battery unit from power end 20
200, while the fluctuation of harmonic carcellation.It is further elaborated with, frequency converter 330 is made up of Q1, Q2, Q3, and Q4, by direct-current chain
The converting direct-current power into alternating-current power of terminal 320, and be provided to load side 10 or will be transmitted to power end 20.On the contrary, make
For a pulse width modulation converters, the alternating current of power end 20 is converted into direct current by it, and is applied to battery unit
Charge/discharge.Therefore, frequency converter 330 can transmit bidirectional current.The output of the alternating current of frequency converter 330 be voltage and frequency with
Power end 20 is similar, and frequency converter it is synchronous with power end 20 carry out when, generated electricity by pulsewidth modulation.Moreover, pass through pulsewidth
Modulation, the total harmonic distortion of current harmonics can be less than 3%.
Interface reactor 340 is placed between frequency converter 330 and power end 20, there is provided interface, and carried in power supply
Suppress harmonic wave when being supplied to load side 10.That is, interface reactor 340 is made up of L0, output end and power supply as frequency converter 330
The interface at end 20, while also function to the effect for suppressing the harmonic wave in load.
Bi-directional DC-DC converter 350 is connected between direct-current chain terminal 320 and battery unit 200, and low tension is carried
It is supplied to battery unit 200.Therefore battery unit 200 can be used in low voltage application program.Meanwhile it also by high-tension electricity from
Battery unit 200 is provided to direct-current chain terminal.
Further further illustrate.As shown in Fig. 2 bi-directional DC-DC converter 350 includes the 1st switching mode
Qb21 and Qb22, i.e. main switch group, it is connected in parallel in direct-current chain terminal 320, towards battery unit 200, and as decompression
Converter reduces voltage when by zero current switching to discontinuous mode；2nd switching mode Qb11 and Qb12, i.e. time exchanger group,
Be connected with battery unit 200, towards direct-current chain terminal 320, as step-up transformer by zero current switching to discontinuous mode
Shi Tigao voltages.I.e., in the present invention, zero current switching method is applied to switch cost caused by reducing converter, and finally
Avoid the rise of parts price and heat expense caused by converter heats.
As shown in figure 3, a represents hard transformation approach.Because consider exchanger be switched off when can caused by sizable handoff loss, it is double
Capacitor Cv1 and Cv2 are contained to dc-dc 350.It is connected in parallel to the 2nd switching mode Qb11 and Qb12, realizes zero
Voltage conversion.According to Fig. 3 b setting, in handover operation, voltage is improved in specific interval, so as to efficiently reduce
Handoff loss.That is, handoff loss can be low by largely sinking, and can be by opening converter, zero electricity in zero current
Converter is closed during pressure to avoid the generation of heat.
Meanwhile according to the present invention, bi-directional DC-DC converter 350 may also comprise a L-C smoothing arrangement group, be positioned over master
Between converter Qb2 and secondary converter Qb1, and at battery unit 200, so as to be operated in zero current and Zero voltage transition
Afterwards, the pulsating current of battery unit is reduced during progress charge and discharge, makes electric current smooth, and be converted into direct current.
That is, zero current and Zero voltage transition can reduce the generation lost and prevent heat.Because in zero current and no-voltage
Battery unit electric current can be caused to continue to change during conversion, and conduct vibrations to battery unit 200, so as to reduce battery unit
200 service life.And L-C smoothing arrangement groups Lb1-Cb can steadily input current and output current impact, so as to improve
The life-span of battery unit 200.
In addition, according to the present invention, bi-directional DC-DC converter 350 can also reduce zero current and no-voltage in charge/discharge and turn
Fluctuated caused by changing, gentle current fluctuation, and without establish separate L-C exponential smoothings on the basis of, by alternating method by its
It is converted into direct current.
That is, the Lb1-Cb in Fig. 2 can be deleted, and the multiphase alternating method can be used to eliminate input current and output
The impact of electric current, facilitation finally is played to the life-span for reducing cost and extension battery unit 200.
Sum it up, the bi-directional DC-DC converter 350 is by Lb21, Lb22, Qb11, Qb12, Cv1, Cv2, Qb21, and
Qb22 is formed, and can conduct bidirectional current, so that battery unit carries out charge/discharge.It has the simplest two-way electricity of progress
The structure of power transmission, and zero-current switching is carried out under non-continuous pattern.It also can enter Qb11 and Qb12 by Cv1 and Cv2
Row Zero voltage transition, so as to obtain peak efficiency.By the way that the pulsating current of bi-directional DC-DC converter is minimized, in non-company
Direct current can be similar to by alternating method, the discharge charge electric current of battery unit under Discontinuous Conduction mode, so as to extend electric power storage to greatest extent
The life-span in pond portion.
As shown in Figure 2 and Figure 5, according to the present invention, charge/discharge, power supply electricity are carried out to battery unit 200 using the alternating method
Voltage can be improved or reduced in road 300.It is described in further detail, the system has the multiple of main converter and time converter
Characteristic, have parallel connection contains at least two the 1st switching mode Qb21 and Qb22, and same amount of 2nd switching mode
Qb11 and Qb12, while, it is necessary to multiple capacitor Cv1 and Cv2 is connected to time converter group Qb11 and Qb12.
Because the charge/discharge bi-directional DC-DC converter 350 of the battery unit 200 is operated with discontinuous current pattern,
With the raising of Converter Capacity, peak power is also required to correspondingly improve.So the peak value can be dropped by two-phase alternating method
It is low.If capacitance improves more, the alternating method of three-phase or bigger phase can be applied.As shown in figure 5, it can be given birth in peak mesial point
Into the electric current of same amount.
The controlling power circuit 300 of power supply control 400, and from solar power generation portion 100 to battery unit 200, load side 10,
Either power end 20 is powered or from battery unit 200 to any load side 10 or power end 20, or from power end 20 to storage
Battery unit 200 or load side 10.
It is further elaborated with, power supply control 400 is that unidirectional booster converter 310 sends conversion signal, and solar energy is sent out
Electricity reaches highest, while keeps the constant voltage of direct-current chain terminal 320.In addition, no matter entered in frequency converter 330 with commutation mode
Row running is operated with PWM pattern, and it can be transferred through the conversion signal that regulation sends suitable different mode.Entering
Row comprehensively analysis solar energy amount after automatically select pattern, with battery unit whether charging and load power the equal nothing of value
Close.In addition, under commutating mode, the frequency converter is run with common power, and voltage is also controlled at similar level, in pulsewidth
Modulation becomes stream mode, and power supply control area limits whole power factor (PF) to 1, and DC link terminal voltage is maintained at constant level.
In battery unit charging process, the 1st switching mode Qb2 of bi-directional DC-DC converter 350 be opened as buck converter or
Close；In battery unit discharge process, the 2nd switching mode Qb1 is opened or closed as booster converter.
In addition, according to the present invention, power circuit 300 also includes breaker 360, is connected power end 20.Therefore power
Control 400 is used to open breaker 360 when having a power failure, and power end 20 and current transformer output operate simultaneously, circuit breaker 360
It is again connected in service restoration.
Meanwhile power supply control 400 show battery unit charged state, solar voltage and electric current, load voltage and
Electric current, conventional power voltage and electric current, power down mode, the electricity charge, current flow and malfunction, and can carry out long-range
Communication.Moreover, it also has protection feature, such as the protection to low pressure, superpressure, power failure, short circuit current and overheat.
Above-mentioned each component is connected and operated according to following patterns in an orderly manner, so as to farthest meet energy
Source demand.As shown in figure 5, according to the present invention, energy control area 400 is converted to battery unit 200 night charge mode, control
The supply of the power supply of power end 20, and power supply is supplied to battery unit 200 and load side 10.Once battery unit 200 is filled
Full, it will control electricity, the electricity of power end 20 is provided to load side 10.That is, at night, the generation of no solar energy, but small load
Common electricity be transported to loading zone.Moreover, because night electricity it is cheap, battery unit can electric power it is generally the least expensive from peak when
Between charged.
On daytime, the selection of pattern is regulated and controled according to the growing amount and loss of solar energy.
On daytime, if the electric power in solar power generation portion 100 is less than the load electric power of load side 10, solar power generation portion
100 and the electric energy of power end 10 will be provided to load side 10.If the electric energy in solar power generation portion 100 is better than load side
10, then electric energy will be provided from solar power generation portion 100 to load side 10 and can source 20.That is, solar energy is provided on the contrary
Dump power.
Situation about such as having a power failure on daytime, if the electric power in solar power generation portion 100 is less than load side 10, solar energy
The electric power of Power Generation Section 100 and battery unit 200 is provided to load side 10.If the electric power in solar power generation portion 100 is higher than
Load side 10, then the electric power in solar power generation portion 100 be provided to load side 10 and battery unit 200.That is, the setting has
Uninterrupted power source feature, under power down mode, solar energy and battery unit electric energy are sustainably also supplied to load side.
On daytime, the failure if solar power generation portion 100 generates electricity, electric energy is provided from battery unit 200 or power end 20
To load side 10.Particularly in the case of bad weather, solar power generation failure, conventional power will be provided to load side.
Therefore, the present invention is related to conventional power and solar power generation AC-battery power source supply, and has energy-storage system
Feature.Under demand management state, pass through MPPT maximum power point tracking.The unidirectional booster converter that the equipment mainly includes will be straight
Stream electricity is exported to direct-current chain terminal from solar cell；The direct current of direct-current chain terminal is transformed into alternating current by current transformer,
Or general alternating current is transformed into direct current on the contrary；Two-way DC-DC converter can be from direct-current chain terminal to electric power storage
Pond portion is filled with direct current, or on the contrary, by the electrical energy discharge of battery unit storage to direct-current chain terminal；The alternating method can lead to
Crossing reduces the pulsating current of battery, extends the life-span of battery unit to greatest extent；Breaker is used to isolate general electric energy；And
And the control allows the configuration of optimum current with monitor portion and shows operating state.Especially charge/discharge electric power storage of the invention
The two-way DC-DC converter in pond portion, by discontinuously operating and Zero voltage transition method, its efficiency is set to reach maximum, from
And conversion loss is minimized.
There is the present invention simplest circuit to set, and so as to improve confidence level, reduces failure occurrence probability, improves efficiency,
Reduce the cost, and make equipment smaller, lighter.It can be applied to unidirectional and three systems, simultaneously as it is in electric power storage
There is retractility during the electric capacity rise of pond portion, so can also be applied to hicap.
According to the materialization of the present invention, the hybrid energy power supply unit utilizes solar power generation, has very simple circuit
Arrangement, so as to improve reliability and reduce manufacturing cost.
For further, the present invention is powered in battery unit and solar panels in the peak period, so as to reduce use
The electricity charge are used, and reduce load, that is, the load of power generator.It can also be when electric capacity improves, it is easier to which ground extends
Batteries in parallel connection is set.
Moreover, solar energy can be used to provide uninterrupted power source in the multi-functional electricity suppl equipment.Because it can make simultaneously
With solar energy and battery unit electric energy, or exclusive use solar energy, or the exclusive use battery unit electricity in power-off/failure
Source, so as to provide load energy.
The present invention can also by the way that the ripple current in the influence battery unit life-span of charge/discharge current is minimized, from
And extend the life-span of battery unit.
In addition, the present invention can establish the high efficiency system almost without conversion loss.Because the two-way DC- of all converters
DC converters are all by soft conversion.
Any technical concept that the present invention as described above can be understood in those of ordinary skill in the art, is carried out real
Border apply, and it can be found that this invention with it is other do not possess the present invention basic concepts or essential characteristic same category of device not
Together.
Above-mentioned preferential embody for the present invention is for the goal of the invention of the illustrations present invention.The scope of the present invention
In Claims scope, rather than it is confined in the above.Right and all variation and modification
Their corresponding definition both is from, and is used as within the scope of the present invention and makes respective explanations.
Claims (7)
1. a kind of equipment that hybrid power is provided using multiphase alternating method by solar energy, it is characterised in that include：
Solar power generation portion, makes solar power generation；
Battery unit, store and electric current is provided；
Power circuit, electrically connect the solar power generation portion and the battery unit；And the load side comprising consumption electric power, and
The power end to be generated electricity for routine use；
Power supply control, control power supply, loop and provide electric current from the solar power generation portion to the battery unit/load
End/the power end, either from the power end to the battery unit or the load side；
Wherein, the design of the power circuit part is to carry out discharge charge to the battery unit by multiphase alternating method
Electricity, so as to reduce or improve voltage.
2. the equipment according to claim 1 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In the power circuit part also includes：
Unidirectional boost converter, when being connected to solar power generation portion, by handover operation, control electric current output changes most
It is high-power, at the same also keep caused by Current Voltage it is constant；
Direct-current chain terminal, when being connected to the unidirectional boost converter, damper changes the battery unit and described
The voltage of load side；
Frequency converter, when being connected to the direct-current chain terminal, by converting direct-current power into alternating-current power, and it is provided to described negative
Lotus end either the power end or converts alternating current to direct current, and it is provided to the electric power storage from the power end
Pond portion, while harmonic carcellation ripple；
Interface reactor, when being placed between the frequency converter and the power end, it will interface is provided and controls power supply
Harmonic wave to the load side supply；And
Bi-directional DC-DC converter, when being connected between the direct-current chain terminal and the battery unit, the electric power storage will be given
Pond portion provides low-tension current, so that the battery unit can be applied to low pressure program；Also, from the battery unit portion
Give the direct-current chain terminal and high-tension current is provided.
3. the equipment according to claim 2 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In the composition of the bi-directional DC-DC converter includes：
The 1st switching mode being at least made up of two unidirectional boost converters, wherein each unidirectional boost converter is simultaneously
It is linked togather, towards the battery unit part, when carrying out zero-current switching in non-contiguous mode, comes as buck converter
Gradually reduce voltage；And
With the unidirectionally switching mode of boost converter quantity identical the 2nd, and as described in two of the 1st switching mode
Unidirectional boost converter is connected in parallel, towards the battery unit part, when carrying out zero-current switching in non-contiguous mode,
Voltage is stepped up as booster converter.
4. the equipment according to claim 3 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In the bi-directional DC-DC converter also includes：
A set of capacitor, second set of exchanger is connected in parallel in, and zero-pressure conversion can be carried out.
5. the equipment according to claim 4 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In, the bi-directional DC-DC converter also walk including：
A set of smooth group of L-C, is positioned between the 1st switching mode and the 2nd switching mode, and the battery unit is placed
In opposite side, after zero current and Zero voltage transition operation, in the battery unit charge/discharge, the battery is reduced
The pulsating current in portion, smooth out electric current and switch to constant current.
6. the equipment according to claim 5 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In the power supply control carries out following control running：
The conversion for the charge mode for ensureing to pass through battery at night is powered, from the power end to the battery unit end and
The load side, after battery is fully charged, the offer of electricity is from the power end to the load side；
On daytime, if electric current caused by the solar power generation portion is less than the load side, from the solar power generation portion and
Electric energy will be provided to the load side caused by the power end；If electric current caused by the solar power generation portion is higher than institute
Load side is stated, electric energy will be provided to the load side and the power end from the solar power generation portion；
Occur if any power failure phenomenon, on daytime, if the generated energy in the solar power generation portion is less than the load side, by described
Electricity caused by solar power generation portion and the battery unit will be provided to the load side；If the solar power generation
The generated energy in portion is higher than the load side, and electric energy caused by the solar power generation portion will be provided to the load side and institute
State battery unit；
If on daytime, the solar power generation portion generates electricity and gone wrong, then gone from the battery unit or the power end
Supply power to the load side.
7. the equipment according to claim 6 for providing hybrid power by solar energy using multiphase alternating method, its feature exist
In the power circuit includes：The breaker of the power end is connected to, the power supply control part is beaten when having a power failure
Open the breaker；Also, the power end and the inverter output terminal run-in synchronism, it is described disconnected in service restoration
Road device is automatically reconnected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610851486.9A CN107872093A (en) | 2016-09-26 | 2016-09-26 | The equipment that hybrid power is provided using multiphase alternating method by solar energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610851486.9A CN107872093A (en) | 2016-09-26 | 2016-09-26 | The equipment that hybrid power is provided using multiphase alternating method by solar energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112257374A (en) * | 2020-09-11 | 2021-01-22 | 北京比特大陆科技有限公司 | Method for configuring phase sequence of multiphase interleaved power supply, computer storage medium and electronic device |
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