CN106655456A - Control system for realizing hybrid charging of wind power, solar energy and AC - Google Patents
Control system for realizing hybrid charging of wind power, solar energy and AC Download PDFInfo
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- CN106655456A CN106655456A CN201710166043.0A CN201710166043A CN106655456A CN 106655456 A CN106655456 A CN 106655456A CN 201710166043 A CN201710166043 A CN 201710166043A CN 106655456 A CN106655456 A CN 106655456A
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- 238000010248 power generation Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 25
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 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
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
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- H02J7/0086—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention relates to the technical field of power generation, and especially relates to a control system for realizing hybrid charging of wind power, solar energy and AC. The control system comprises a photovoltaic module, solar charger power circuit, a charger power circuit, a wind driven generator, a diode rectifier, a wind power generation charger, a solar controller, a wind power generation controller, a battery charging controller, a power balance controller and an AC charging controller. The control system provided by the invention has the beneficial effects that in combination with the control method of wind power, solar energy and AC charging, renewable energy is used preferably, and the power generation properties of the wind driven generator and the solar photovoltaic module, and the three-phase battery charging and minimal AC electric energy input and other demands are considered.
Description
Technical field
The present invention relates to technical field of power generation, especially a kind of control system for realizing wind-force, solar energy and exchanging mixed charged
System.
Background technology
The realization of such hybrid charging system at present generally uses independent wind-force, solar energy and AC charger, then
Integrated by a central control unit, this mode determines mode of operation on the basis of charge condition of battery, shortcoming is nothing
Method fill part using the renewable sources of energy and consider battery three stages charge, if for example battery from overcurrent charging under do not reduce wind-force or
Solar electrical energy generation amount will cause battery to be damaged, though to avoid battery from damaging, to stop wind-force or solar electrical energy generation in the way of and
It is non-in the way of reducing generating electricity reducing charging current, do not fill part and utilize renewable source of energy generation, the regeneration of required device will be caused
Energy capacity is bigger compared with demand.Its primary cell cannot be followed under general three stages charging modes in charging current and voltage, be charged
Capacity will be reduced, and battery life is also prone to shorten.
Therefore, for the problems referred to above are necessary to propose a kind of control system for realizing wind-force, solar energy and exchanging mixed charged
System.
The content of the invention
The present invention seeks to overcome deficiency of the prior art, there is provided one kind realizes wind-force, solar energy and exchanges mixed
Close the control system for charging.
In order to solve above-mentioned technical problem, the present invention is to be achieved through the following technical solutions：
A kind of control system realized wind-force, solar energy and exchange mixed charged, including photovoltaic module, solar charger power
Circuit, charger power circuit, wind-driven generator, diode rectification, wind charger, controller for solar, wind-force
Arrange in electricity generating controller, battery charge controller, power balance controller and AC charge controllers, the controller for solar
There is MPPT controller 1, the MPPT controller 1 is using the voltage and Current calculation photovoltaic module of photovoltaic module in maximum power point
Voltage commands, the voltage controller 1 recycles this order and the voltage ratio of photovoltaic module relatively and obtains PWM after being adjusted
1 control voltage, the PWM 1 recycles this control voltage to obtain the switch switching signal of solar charger power circuit；
MPPT controller 2 is provided with the wind power generation controller, the MPPT controller 2 is using wind-driven generator through two
In the voltage commands of maximum power point, voltage controller 2 recycles the voltage and Current calculation wind-driven generator of pole pipe commutator
This order and the voltage ratio of wind-driven generator obtain relatively and after being adjusted the control voltage of PWM 2, and PWM 2 recycles this to control
Voltage processed obtains the switch switching signal of wind charger power circuit.
Preferably, the battery charge controller includes charging voltage controller and charging current controller, the charging
Voltage controller using charging voltage order and cell voltage via pi controller 1 adjust and a limiter 1 after obtain
Charging current order, cell voltage not yet charges when reaching setting voltage, and this limiter 1 is to set maximum charging current；
Controller initially enters linear zone during cell voltage close setting voltage reduces charging current, be up to battery maintain it is set
Fixed voltage and the loss for making charging current only provide battery itself.
Preferably, the inner looping of the battery charge controller is charging current controller, and it feeds back battery current with electricity
Push back road generation current order compare after the control signal of a feeding power balance controller is obtained through the controllers of PI 2V M 。
Preferably, the control signalV M It is divided into two-way, wherein producing AC charger circuits via negative value limiter all the way
PWM control voltage (v cona ), another road obtains a signal via a positive limiting deviceV L ,V L Obtain via a limiter 2 again
SignalV L1 , andV L WithV L1 Difference then obtain signalV L2 ,V L1 With the voltage produced by the MPPT controller 1 of controller for solar
Order be added after obtain voltage controller 1 voltage commands (V p *), andV L2 With the institute of MPPT controller 2 of wind power generation controller
The voltage commands of generation obtain after being added voltage controller 2 voltage commands (V g *)。
Preferably, AC charge controllers are further included, the AC charge controllers utilize control signalv cona Produce PWM
3 trigger G3, PWM 3 simultaneously charges via an AC and enables controller and utilize battery voltage to determine the whether actions of PWM 3 that AC fills
Electricity enable controller be a hysteresis comparator, when cell voltage less than a default value (V bL ) when just start PWM 3 to battery charge,
When cell voltage be charged to higher than a default value (V bH ) when just close PWM 3 stop to battery charge.
Preferably, wherein, when not connecting AC chargers or cell voltage is higher thanV bH When, only with photovoltaic module and wind-power electricity generation
When machine provides electric power, and the peak power sum total of solar energy and wind-power electricity generation less than loading demand, not enough power is by battery
Electric discharge is provided.
Preferably, wherein, do not connect AC chargers or cell voltage be higher thanV bH When, only with photovoltaic module and wind-driven generator
Electric power is provided, and when the peak power that solar energy and wind-force can be generated is more than loading demand, unnecessary power fills to battery
Electricity, and when the charging current to battery be more than set charging current order when, solar cell first by load shedding, that is,
Deviate MPP operating points so that solar energy adds the generated energy and load and the aggregate demand power-balance of charge requirement of wind-force, to avoid
Battery is damaged because overcharging.
Preferably, wherein, when not connecting AC chargers or cell voltage is higher thanV bH When, only with photovoltaic module and wind-power electricity generation
Machine provides electric power, but when the peak power produced by wind-force is i.e. more than load and charge power demand, solar cell is complete
It is zero that the cause of high-fall load work in open-circuit voltage to make generated energy, and wind-power electricity generation then charges more than the power of load to battery, and works as
When being more than set charging current order to the charging current of battery, wind-driven generator also needs to deviate its MPP point so that wind-force
Generated energy with load and charge requirement aggregate demand power-balance, to avoid battery from damaging because overcharging.
Beneficial effect of the present invention：The present invention can have concurrently preferential with reference to the control method of wind-force, solar energy and AC charging
Using the renewable sources of energy, consider that wind-driven generator and photovoltaic module power generation characteristics, the stage of battery three charge and handed over minimum
The demands such as stream input electric energy, with very strong practicality.
The technique effect of the design, concrete structure and generation of the present invention is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is the system architecture diagram of the present invention；
The discharge mode schematic diagram of Fig. 2 embodiment of the present invention；
The restricted charge mode of solar electrical energy generation of Fig. 3 embodiment of the present invention；
Fig. 4 is the restricted charge mode of solar energy and wind-power electricity generation of the embodiment of the present invention；
Fig. 5 is the AC charge mode schematic diagrames of the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways for covering.
Such as Fig. 1 is simultaneously combined shown in Fig. 2 to Fig. 5, case study on implementation one：As shown in figure 1, wherein AC charges can come from civil power also
Or from alternating current generator, controller mainly includes controller for solar, wind power generation controller, battery charge controller, work(
Five controllers such as rate balance controller and AC charge controllers.Controller for solar and wind power generation controller are respectively to control
The electrical power conversion of photovoltaic module processed and wind-driven generator, AC charge controllers are to control AC charge powers, battery charge control
Device is to control the charging of battery, and power balance controller then charges and battery etc. to balance solar energy, wind-power electricity generation, AC
The balance of part instantaneous power.
, using double loop control, the inner looping of controller for solar is for too for controller for solar and wind power generation controller
Positive energy cell voltage control loop, the inner looping of wind power generation controller is then generator voltage control loop, the two outer time
Road is maximum power point tracking (Maximum Power Point Tracking, MPPT) control loop to produce interior returning
The voltage commands on road are following the trail of the maximum power point of solar cell and wind-driven generator.MPPT controller 1 utilizes photovoltaic module
Voltage (V p ) and electric current (I p ) calculate photovoltaic module maximum power point voltage commands (V p *), voltage controller 1 is recycled
This order and the voltage ratio of photovoltaic module relatively and obtain after being adjusted PWM 1 control voltage (v conp ), PWM 1 recycles this
Control voltage obtains the switch switching signal (G1) of solar charger power circuit.MPPT controller 2 utilizes wind-driven generator
Through diode rectification voltage (V g ) and electric current (I g ) calculate wind-driven generator maximum power point voltage commands (V g *),
Voltage controller 2 recycles this order and the voltage ratio of wind-driven generator relatively and the control voltage of PWM 2 is obtained after being adjusted
(v cong ), PWM 2 recycles this control voltage to obtain the switch switching signal (G2) of wind charger power circuit.
Then comprising charging voltage controller and charging current controller, charging voltage controller is utilized battery charge controller
Charging voltage order (V b *) and cell voltage (V b ) via pi controller 1 (PI 1) adjustment and a limiter 1 after obtain
Charging current order (I b *), when cell voltage not yet charges reaches setting voltage, this limiter 1 is to set maximum charging
Electric current；When cell voltage close setting voltage, controller initially enters linear zone reduces charging current, will be eventually reached electricity
Pond maintains set voltage and makes charging current only provide the loss of battery itself.This charging modes can reach determines electric current
Charge, purpose that three stages such as constant-voltage charge and floating charge charge to be to increase the service life of battery.Battery charge controller
Inner looping be charging current controller, its feedback battery current (I b ) with voltage circuit produce current order (I b *) compare relatively after
The control signal of a feeding power balance controller is obtained through PI 2 (proportional integral) controllerV M 。V M Signal is divided into two-way, its
In all the way via negative value limiter produce AC charger circuits PWM control voltage (v cona ), another road is via one on the occasion of limit
Device processed obtains a signalV L ,V L Obtain signal via a limiter 2 againV L1 , andV L WithV L1 Difference then obtain signalV L2 ,V L1 With
Voltage commands produced by the MPPT controller 1 of controller for solar obtain after being added voltage controller 1 voltage commands (V p *),
AndV L2 The voltage of voltage controller 2 is obtained after being added with the voltage commands produced by the MPPT controller 2 of wind power generation controller
Order (V g *)。
AC charge controllers utilize control signalv cona Trigger G3 of PWM 3 is produced, PWM 3 simultaneously charges via an AC
Enable controller and utilize battery voltage to determine the whether actions of PWM 3, AC charges, and to enable controller be a hysteresis comparator, works as battery
Voltage less than a default value (V bL ) when just start PWM 3 to battery charge, when cell voltage be charged to higher than a default value (V bH )
When just close PWM 3 stop to battery charge.
Case study on implementation two, for the control framework that Fig. 1 combines wind-force, solar energy and AC three converters of charging, is obtained such as
Mode of operation shown in Fig. 2, altogether comprising four kinds：(1) discharge mode（As shown in Figure 2）, when do not connect AC chargers or battery electricity
Pressure is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, and the peak power of solar energy and wind-power electricity generation is total
When closing less than loading demand, not enough power is provided by battery discharge.(2) the restricted charge mode of solar electrical energy generation（Such as Fig. 3
It is shown）, when not connecting AC chargers or cell voltage is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, and
When the peak power that solar energy and wind-force can be generated is more than loading demand, unnecessary power charges to battery, and when right
When the charging current of battery is more than set charging current order, solar cell deviates MPP work first by load shedding
Point so that solar energy adds the generated energy and load and the aggregate demand power-balance of charge requirement of wind-force, to avoid battery because excessively
Charge and damage.(3) the restricted charge mode of solar energy and wind-power electricity generation（As shown in Figure 4）, when not connecting AC chargers
Or cell voltage is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, but when the peak power produced by wind-force
When i.e. more than load and charge power demand, it is zero that solar cell causes work in open-circuit voltage to make generated energy by complete load shedding,
Wind-power electricity generation then charges more than the power of load to battery, and when the charging current to battery is more than set charging current
During order, wind-driven generator also needs to deviate its MPP point so that the generated energy of wind-force and load and the aggregate demand power of charge requirement
Balance, to avoid battery from damaging because overcharging.(4) AC charge modes（As shown in Figure 5）, when connecting AC chargers to electricity
When pond is charged, if now cell voltage is higher thanV bH When, AC chargers enable controller will not output signal, otherwise if now battery
Voltage is less thanV bL When, AC chargers enable signal and open, if now still having solar energy and wind-force available, solar cell and wind
Power generator will be operated in its MPP point to reduce the power provided by AC chargers as far as possible.
Case study on implementation three：
The control framework of Fig. 1 is designed by four kinds of mode of operations according to Fig. 2 to Fig. 5, below with the various renewable sources of energy
How power generation situation reaches the operation requirement of each mode of operation of Fig. 2 come the controller design that illustrates Fig. 1., do not connecting AC
In the case that charger only provides electric power with solar cell and wind-driven generator, and the maximum that solar energy and wind-force are generated electricity
When power is less than loading demand, now not enough power is provided by battery discharge automatically, due to charging current (I b ) do not reach it
Setting value (I b *), battery charge current controller output signal (V M ) will be for just, the output signal of Jing positive limiting device branch roadsV L Be zero, it is related so thatV L1 WithV L2 Zero is, therefore the charge circuit of battery just cannot affect what two MPPT control loops were produced
Voltage commands, that is, the final voltage commands of controller for solar and wind power generation controller are to be determined by its MPPT controller
It is fixed so that solar cell and wind-driven generator will be operated in MPP points, it coincide with the power flow of Fig. 2.
Only electric power, and solar energy and wind are provided when AC chargers are not connected with solar cell and wind wind power generation machine
The peak power that power is generated electricity be more than loading demand when, unnecessary power will charge to battery, when battery charging current (I b )
Can reach charging current order set by charging voltage controller (I b When *), charging current controller will start towards negative sense
Development is causedV M It is negative, after limiter 2 signalV L If not up to limiting level,V L1 =V L AndV L2 =0,V L1 The sun will be made
Can the voltage commands of battery increase and cause solar cell to deviate its MPP first, and maximum power point of wind electric power generation controller institute
Calculated voltage commands are unaffected, and wind-driven generator is still operated in MPP,V L1 Solar energy is caused to add wind one balance
In the level of the generated energy of power and the aggregate demand power-balance of load and charge requirement, battery can be so avoided because overcharging
And lower the life-span, the action of system above meets the need of the restricted charge mode power flow control of Fig. 3 solar electrical energy generations
Ask.
The output of above-mentioned charging current controllerV M If continuing to be made towards negative sense increaseV L Reach the restriction level of limiter 2
When, thenV L1 Will equal to limits value, andV L2 It is equal toV L Deduct and limit value part, being set as of this limits value makesV L1 It is able to the sun
Energy battery deviates MPP operating points and reaches its open-circuit voltage, so that the power output of solar cell is zero, andV L2 Wind will be made
Power generator also deviates its MPP operating point,V L2 Most balance at last one so that the generated energy of wind-force and load and charge requirement
In the level of aggregate demand power-balance.The action of system above meets Fig. 4 solar energy and the restricted charging mould of wind-power electricity generation
The demand of formula power flow control.
Understand that the design of Fig. 1 controllers is preferentially to use the wind-force then sun by the action of above two modes system controller
Can, it is to consider following 2 points of planning made：(1) dynamic responding speed of solar cell be compared with wind-driven generator it is fast, it is excellent
First make work voltage deviation to it and there is dynamic response faster to the power response that wind-driven generator is made to deviate than System Priority
Speed.(2) system also can automatically meet the power-balance control when wind-driven generator is not connected.
When connecting AC chargers battery being charged, if if now cell voltage is less thanV bL , AC chargers by start PWM open
Begin to charge battery, if now still having solar energy and wind-force available, if aforesaid charging current controller output levelV M Still
Charge enough for negative indication solar energy and wind-force electricity power and loading demand,V M It is supplied to AC to fill via negative value limiter
It will be zero that the control voltage of electrical equipment is the input power of zero, AC chargers.But work asV M For timing, represent that solar energy and wind-force are carried
For underpower with provide load and charge use, nowV L It is zero, solar energy and wind-driven generator will be operated in its MPP
Put to reduce the power provided by AC chargers as far as possible, andV M Level by balance one make AC chargers converter provide
Power be exactly equal to charge plus the power of solar energy and wind-force and loading demand power, the action of system above meets figure
The demand of 4AC charge modes power flow control.
For the design that above the preferential solar energy of carried wind-force is used considers, and connect the think of of the control after AC chargers
Road, situation about also not connecting suitable for wind-driven generator, will not be described here
Beneficial effect of the present invention：The present invention combines wind-force, solar energy and the control method for exchanging mixed charged, can have concurrently preferential
Using the renewable sources of energy, consider that wind-driven generator and photovoltaic module power generation characteristics, the stage of battery three charge and handed over minimum
The demands such as stream input electric energy, with very strong practicality.
The preferred embodiment of the present invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (8)
1. a kind of control system realized wind-force, solar energy and exchange mixed charged, it is characterised in that：Including photovoltaic module, too
Positive energy charger power circuit, charger power circuit, wind-driven generator, diode rectification, wind charger, the sun
Energy controller, wind power generation controller, battery charge controller, power balance controller and AC charge controllers, the sun
MPPT controller 1 can be provided with controller, the MPPT controller 1 utilizes the voltage and Current calculation photovoltaic mould of photovoltaic module
In the voltage commands of maximum power point, the voltage controller 1 recycles this order and the voltage ratio of photovoltaic module relatively and Jing to block
The control voltage that PWM 1 is obtained after adjustment is crossed, the PWM 1 recycles this control voltage to obtain solar charger power circuit
Switch switching signal；
MPPT controller 2 is provided with the wind power generation controller, the MPPT controller 2 is using wind-driven generator through two
In the voltage commands of maximum power point, voltage controller 2 recycles the voltage and Current calculation wind-driven generator of pole pipe commutator
This order and the voltage ratio of wind-driven generator obtain relatively and after being adjusted the control voltage of PWM 2, and PWM 2 recycles this to control
Voltage processed obtains the switch switching signal of wind charger power circuit；
When not connecting AC chargers or cell voltage is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, but work as
When peak power produced by wind-force is i.e. more than load and charge power demand, solar cell is caused to work in out by complete load shedding
It is zero that road voltage makes generated energy, and wind-power electricity generation then charges more than the power of load to battery, when the charging current to battery is more than
During set charging current order, wind-driven generator also needs to deviate its MPP point so that the generated energy of wind-force and load and charge
The aggregate demand power-balance of demand, to avoid battery from damaging because overcharging.
2. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 1, its feature exists
In：The battery charge controller includes charging voltage controller and charging current controller, the charging voltage controller profit
With charging voltage order and cell voltage via pi controller 1 adjust and a limiter 1 after obtain charging current order,
Cell voltage not yet charges when reaching setting voltage, and this limiter 1 is to set maximum charging current；Cell voltage is close to and sets
Controller initially enters linear zone when determining voltage reduces charging current, is up to battery and maintains set voltage and make to fill
Electric current only provides the loss of battery itself.
3. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 1, its feature exists
In：The inner looping of the battery charge controller is charging current controller, and its feedback battery current is produced with voltage circuit
Current order obtains the control signal of a feeding power balance controller through the controllers of PI 2 after comparingV M 。
4. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 3, its feature exists
In：The control signalV M It is divided into two-way, wherein producing the control electricity of the PWM of AC charger circuits via negative value limiter all the way
Pressure (v cona ), another road obtains a signal via a positive limiting deviceV L ,V L Obtain signal via a limiter 2 againV L1 , andV L WithV L1 Difference then obtain signalV L2 ,V L1 Obtain after being added with the voltage commands produced by the MPPT controller 1 of controller for solar
Voltage controller 1 voltage commands (V p *), andV L2 With the voltage commands produced by the MPPT controller 2 of wind power generation controller
Obtain after addition voltage controller 2 voltage commands (V g *)。
5. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 3, its feature exists
In：Including AC charge controllers, the AC charge controllers utilize control signalv cona Produce trigger G3 of PWM 3, PWM
3 and charge via an AC and enable controller and utilize battery voltage to determine the whether actions of PWM 3, AC charges, and to enable controller be one slow
Stagnant comparator, when cell voltage less than a default value (V bL ) when just start PWM 3 to battery charge, when cell voltage is charged to height
In a default value (V bH ) when just close PWM 3 stop to battery charge.
6. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 5, its feature exists
In：When not connecting AC chargers or cell voltage is higher thanV bH When, only provide electric power, Er Qietai with photovoltaic module and wind-driven generator
When the peak power sum total of positive energy and wind-power electricity generation is less than loading demand, not enough power is provided by battery discharge.
7. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 6, its feature exists
In：Do not connect AC chargers or cell voltage is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, and work as the sun
When the peak power that energy and wind-force can be generated is more than loading demand, unnecessary power charges to battery, and when to battery
When charging current is more than set charging current order, solar cell deviates MPP operating points first by load shedding, makes
Solar energy adds the generated energy of wind-force and load and the aggregate demand power-balance of charge requirement, to avoid battery because overcharging
Damage.
8. a kind of control system realized wind-force, solar energy and exchange mixed charged as claimed in claim 7, its feature exists
In：When not connecting AC chargers or cell voltage is higher thanV bH When, only electric power is provided with photovoltaic module and wind-driven generator, but work as wind
When peak power produced by power is i.e. more than load and charge power demand, solar cell is caused to work in open circuit by complete load shedding
It is zero that voltage makes generated energy, and wind-power electricity generation then charges more than the power of load to battery, and when the charging current to battery is big
When set charging current order, wind-driven generator also need deviate its MPP point so that the generated energy of wind-force with load and fill
The aggregate demand power-balance of electric demand, to avoid battery from damaging because overcharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166043.0A CN106655456A (en) | 2017-03-20 | 2017-03-20 | Control system for realizing hybrid charging of wind power, solar energy and AC |
Applications Claiming Priority (1)
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