CN106160016B - Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method - Google Patents
Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method Download PDFInfo
- Publication number
- CN106160016B CN106160016B CN201610528419.3A CN201610528419A CN106160016B CN 106160016 B CN106160016 B CN 106160016B CN 201610528419 A CN201610528419 A CN 201610528419A CN 106160016 B CN106160016 B CN 106160016B
- Authority
- CN
- China
- Prior art keywords
- power module
- current
- parallel operation
- operation system
- efficiency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
- G05B13/024—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system in which a parameter or coefficient is automatically adjusted to optimise the performance
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method, the present invention is obtaining expression formula Γ=Ψ (i) and corresponding optimum point between expression formula η=Φ (i) and flow standard deviation inverse Γ and power module load current i between efficiency eta and power module load current i respectivelyWithOn the basis of, with the area of η=Φ (i) and Γ=Ψ (i) and for objective function, seekWithBetween electric current Iref, so thatThe value characterizes during parallel operation system flows efficiency and stream integrated performance index is optimal and its corresponding in wire module load current value, and for parallel operation system effectiveness and flow-optimized control provides foundation.The present invention has dynamically adjusts online power module quantity in real time, it is ensured that parallel operation system works in always to flow near optimal working point.With high reliablity, it is practical the features such as；Parallel operation system current sharing energy and efficiency index can be effectively taken into account, the performance driving economy and reliability of system are improved, provides reliable guarantee for the safe and efficient operation of parallel operation system.
Description
Technical field
The present invention relates to based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method,
For the operation quantity optimization control of parallel operation system power supply module, it is ensured that the efficiency of parallel operation system under the conditions of different loads
Stream comprehensive performance is optimal, and this method is equally applicable to other electronic equipment parallel runnings and flows (equal power) property to efficiency and
The requirement of energy index.
Background technique
It is multiple power module parallel output structures to high-power parallel operation power supply, due to have it is compatible strong, can N+m
Redundancy backup, a series of advantages such as highly reliable, cost performance is high, design difficulty is lower, is easily managed, become solve it is high-power defeated
One of the preferred option of power supply design out, equal Flow Technique has become the core technology of parallel operation.Equal Flow Technique refers to multiple
When power module parallel operation, under the premise of meeting output voltage stable state accuracy and dynamic response, there is the uniform of degree of precision
Distribute each power module load current.So the height of parallel operation system current sharing energy is directly related to machine system
Safe and reliable and high performance operation.
Since parallel operation system load electric current has time variation and randomness, cause using traditional sharing control scheme
(i.e. on-line operation power module quantity is constant, reaches equal by the output electric current that sharing control algorithm adjusts each power module
Stream target and load matching target scheme) parallel operation system in power module working range cover underloading, it is semi-load, specified
The operating conditions such as load and overload.On the one hand, its system current sharing can have one when parallel operation system is run under different loads operating condition
Determine difference, thus need to optimize parallel operation system control, it is ensured that system always can under different loads current conditions
Realize higher current sharing energy；On the other hand, for power module in different loads, working efficiency is also different, thus needs
Optimized control is carried out to the quantity of the online power module of parallel operation system, it is ensured that each online power module works in most
Near high efficiency point, it is ensured that system system effectiveness under any loading condition is optimal.It is therefore desirable to a kind of new control strategy,
It is able to achieve parallel operation system effectiveness and current sharing energy overall target is in higher level.
Existing parallel operation system sharing control strategy can guarantee parallel operation system load electric current in all online works
It is distributed equally as power module.But there are problems that following two：One, can not achieve parallel operation system current sharing can locate
In preferable state；Two, parallel operation system can not achieve higher efficiency.So in order to realize parallel operation system in difference
Under loading condition efficiency and stream effect integrated performance index be in it is higher, just must be set up efficiency and stream comprehensive performance evaluation
Index, seek integrated performance index it is optimal when corresponding power module output current value.As long as controlling parallel operation system power supply
Module output current is near optimal output electric current, ensure that parallel operation system in different loads efficiency and
Flow optimal efficient, the reliable and long-life operation with parallel operation system of effect integrated performance index.
However, not yet finding a kind of reliable and practical parallel operation system by retrieving existing paper and patent discovery
System module number control method come realize system effectiveness and stream integrated performance index optimization.Thus, it is a kind of reliably and practical
Parallel operation system module number controlling method be just particularly important, have for the reliability service of parallel operation system
Important influence.
Summary of the invention
It is an object of the present invention to overcome the above deficiencies, proposes based on efficiency and current sharing energy area and maximum
Parallel operation system module number controlling method.
The technical scheme is that：One kind is based on efficiency and current sharing energy area and maximum parallel operation system module
Number controlling method, its step are as follows：
(1) the parallel operation system load electric current I of K power module composition is obtainedoutFromIt is divided into according toEquidistantly change toWhen, each power module is in different loads electric currentIn the case of adopt
Collect V output electric current Datacurr(m') (i) (j), output voltage Datavolt(m') (i) (j) and input power, wherein：M' is electricity
Source module serial number；I is the corresponding sequence number value of load current value；J is output current acquisition data sequence number；M', i, j meet m'=
1 ... K }, i=1 ... U }, j=1 ... V }；INFor the rated current of power module；
(2) power module output current and stream expectation electric current of serial number m' are obtainedRelative deviationMathematic expectaionAnd standard deviationK power module, which is obtained, in stream expectation electric current isWhen Sm'iAverage valueCalculate SiΓ reciprocali；Obtain serial number m' power module stream expectation electric current beWhen efficiencyWith efficiency mathematic expectaion
K power module, which is obtained, in stream expectation electric current isOperating condition under average efficiency
(3) respectively to U data pointWithIt carries out processing and obtains Γ and power module
Expression formula η=Φ (i) between expression formula Γ=Ψ (i) and efficiency eta between load current i and power module load current i；
(4) allowing in output current scope, obtaining and meetIt is maximumAnd meetIt is maximum
's
(5) it obtainsWithBetween and meetMaximum electric current Iref, i.e.,：Wherein：?WithBetween；
(6) with cycle TsFor the online power module quantity M of interval calculation parallel operation system, and to M online power supply moulds
The output electric current of block is acquired, and the output current data of the online power module of m-th of serial number is labeled as Curr (m), m is
The serial number of current online power module；
(7) load current of the parallel operation system of M online power module compositions is calculatedWith
The equal current load electric current of line power module
(8)|Ishare-Iref|≤σ then continues the operation of step (6)；Conversely, then obtaining online power module output current and being
Reference current IrefWhen online power module quantity N*,
(9)N*≤ 1 is arranged N*=2；Conversely, then obtaining the online power module amount Δ that parallel operation system need to be adjusted
N*=N*- M, according to Δ N*It is positive and negative, Centralized Controller increases or decreases | Δ N*| a online power module.
In step (1)-step (4)：
(1) t ∈ ((i-1) T, iT], (U >=i >=1), electronic load current isWhen, obtain power supply mould
The stream target reference current of block：
(2) the power module output current sampled data data of serial number m' are obtained：
Datacurr(m') (i) (j), (K >=m' >=1, U >=i >=1, V >=j >=1), and obtain it and flow relative deviation δ
(m')(i)(j)：
(3) power module for obtaining serial number m' existsUnder the conditions of relative deviation δ (m') (i) (j) close
In the mathematic expectaion E of jm'i：
(4) power module for obtaining serial number m' existsUnder the conditions of relative deviation δ (m') (i) (j) close
In the standard deviation S of jm'i：
Sm'iIndicate that the power module of serial number m' existsUnder the conditions of relative deviation standard deviation；
(5) obtaining K power module in stream expectation electric current isWhen mean standard deviation：
(6) S is obtainediΓ reciprocali：
(7) to U data pointIt carries out handling the relationship obtained between Γ and power module load current i：Γ
=Ψ (i)；Allowing in output current scope, is obtaining and meetLoad current
(8) power module for obtaining serial number m' existsCondition efficiency eta (m') (i) (j)：
(9) power module for obtaining serial number m' existsUnder the conditions of condition efficiency eta (m') (i) (j) close
In the mathematic expectaion η of jm'i：
ηm'iIndicate that the power module of serial number m' existsUnder the conditions of efficiency average value；
(10) obtaining K power module in stream expectation electric current isOperating condition under average efficiency：
(11) are to U data pointIt carries out handling the pass obtained between efficiency eta and power module load current i
System：η=Φ (i) is allowing in output current scope, is obtaining and meet：Load current
(12) obtain and meet with the area of η=Φ (i) and Γ=Ψ (i) and for objective function：
Optimal load electric current Iref,
Wherein：IrefIt is inWithBetween,It is inWithBetween.
Step (3) is using fitting of a polynomial, curve matching, interpolating method respectively to U data pointWithIt is handled.
The principle of the present invention mainly includes following part：Firstly, obtain parallel operation system power supply module average efficiency η with
Expression formula η=Φ (i) of power module load current i, and seek corresponding load current when Φ (i) maximumSecondly, obtaining
Expression formula Γ=Ψ between parallel operation system power supply module mean standard deviation inverse Γ and power module load current i
(i), and corresponding load current when Ψ (i) maximum is soughtAgain, existWithBetween seek optimal current IrefMeet face
Product andFinally, obtaining the total load current I of parallel operation system in real timeoutAnd it seeks
Optimal on-line operation power module quantityIt controls online power module quantity and is equal to or approaches N*, it is ensured that system begins
It is worked near current sharing energy optimum point eventually.Due to the power module of same size, its characteristic is totally consistent, thus is passed through
(size of K can be determined that K of the present invention fixes tentatively the parallel operation system for 10) a power module composition in difference to measurement K by user
Current sharing energy index under load current can be obtained the parallel operation system of any N number of power module composition in different loads feelings
Current sharing energy index under condition.
The present invention has the advantage that：
(1) present invention covers load current full operating range operating conditions, have wide applicability；
(2) present invention can integrate and take into account parallel operation system effectiveness and current sharing energy index, with significant economy with
System reliability；
(3) present invention is flowed in expression formula η=Φ (i) respectively between acquisition efficiency eta and power module load current i and
Expression formula Γ=Ψ (i) and corresponding optimum point between standard deviation inverse Γ and power module load current iWithBase
On plinth.With the area of η=Φ (i) and Γ=Ψ (i) and for objective function, seekWithBetween electric current Iref, so thatWherein：?WithBetween.The value characterizes
Efficiency and stream integrated performance index is optimal and its corresponding in wire module load current value during parallel operation system flows,
For parallel operation system effectiveness and flow-optimized control provides foundation.
(4) present invention has dynamically adjusts online power module quantity in real time, it is ensured that parallel operation system works in always
Flow near optimal working point.
(5) of the present invention based on efficiency and current sharing energy area and the control of maximum parallel operation system module quantity
Method has the features such as high reliablity, practical；Parallel operation system current sharing energy and efficiency index can be effectively taken into account, is improved
The performance driving economy and reliability of system provide reliable guarantee for the safe and efficient operation of parallel operation system.
Detailed description of the invention
Fig. 1 is parallel operation system construction drawing.
Fig. 2 is parallel operation system effectiveness and flows comprehensive performance testing system structure chart.
Fig. 3 is efficiency and flows comprehensive performance area and schematic diagram.
Specific embodiment
The embodiment of the present invention is described further below for attached drawing：
The present invention provides based on efficiency and current sharing energy area and maximum parallel operation system module quantity controlling party
Method.Fig. 1 show parallel operation system construction drawing, and Fig. 2 show parallel operation system effectiveness and flows all-round property testing system
System structure chart, Fig. 3 are efficiency and flow comprehensive performance area and schematic diagram.Fig. 1 mainly includes parallel operation system centralized control
Device, power module and power load.Centralized Controller obtains the IP and its output electric current in wire module, optimization by communication bus
Control the quantity of online power module；Power module mainly realizes the operation control life for the Centralized Controller that powers to the load, receives
Enable and upload output electric current；Power load mainly includes all kinds of electrical equipments.Whether there is or not communication bus for the realization of stream regulatory function
Autonomous equalizing current mode and there is communication bus to flow mode, realized by special flow equalizing function module, the present invention does not repeat.Fig. 2 master
Wanting function is to obtain the equal flow standard deviation of functional relation η=Φ (i) and module of parallel operation system effectiveness and load current to fall
Several mathematical relationship Γ=Ψ (i) with load current, and determine respective optimal load electric currentWithOn this basis, with
The area of η=Φ (i) and Γ=Ψ (i) and be objective function, seeksWithBetween electric current Iref, so thatSo that it is determined that efficiency and stream comprehensive performance it is optimal when
Load current Iref.Fig. 2 mainly includes host computer (PC machine), program-control electronic load, power module, power meter etc..Host computer
(PC machine) major function is to obtain online power module IP address, input power, power module output current, output power, control
Program-control electronic load operating current, calculating η=Φ (i), Γ=Ψ (i) and optimal load electric current I processedref；Program-control electronic load is used
In the load current for adjusting parallel operation system；Power module mainly realize receive IP setting, receive host computer order data and
Upload exports electric current, output power to host computer；Power meter is mainly used for measuring the input power in wire module.Fig. 3 gives
IrefBeing in where section ensures efficiency and flows comprehensive performance area and maximum schematic diagram.
One, parallel operation system effectiveness and stream comprehensive performance testing system variable declaration are as follows：K is parallel operation test
The occurrence of system power supply module number, K can be set according to actual conditions, INFor power module rated current；For parallel operation
System nominal exports electric current, meetsU is load current point quantity, i.e. parallel operation system load electric current IoutFromIt is divided into according toEquidistantly change to(cover underloading, semi-load, specified load and overload conditions,
U is necessary for the positive integer not less than 20, can be determined according to the maximum load current value that system works by user)；
Electric current is exported at i-th for electronic load, wherein：U≥i≥1；M' is power module serial number, is met：K power module
IP is mapped as m'=1 according to order from small to large, and 2 ... K, i.e. m'=1 are the smallest power module serial number of IP, m'=2 IP
Secondary minimal power module serial number ..., and so on m'=K be the maximum power module serial number of IP；V is that parallel operation system is in
It need to be to ought individually online power module output current, output voltage and input power data sampling number when a certain load current point
Amount, V can be sized according to actual needs.Datacurr(m') (i) (j), (K >=m' >=1, U >=i >=1, V >=j >=1) are serial number
Exist for the power module of m'Under the conditions of j-th of current sampling data；Datavolt(m') (i) (j), (K >=m' >=
1, U >=i >=1, V >=j >=1) exist for the power module of serial number m'Under the conditions of j-th of output voltage hits
According to；P (m') (i) (j), (K >=m' >=1, U >=i >=1, V >=j >=1) are that the power module of serial number m' existsItem
J-th of input power sampled data under part；η (m') (i) (j), (K >=m' >=1, U >=i >=1, V >=j >=1) are serial number m''s
Power module existsUnder the conditions of j-th of efficiency data calculating, meet：ηm'iPower module for serial number m' existsUnder the conditions of V η (m') (i) (j) mathematic expectaion, meet：IrefIt (i) is power supply
Module existsUnder the conditions of flow target reference, meet：Wherein：U≥i≥1；ηi
It is in stream expectation electric current for K power moduleOperating condition under average efficiency, meet：δ(m')
(i) power module that (j) is serial number m' existsUnder the conditions of j-th sample rate current with flow reference target electric currentRelative standard deviation values, meet：Em'iFor the electricity of serial number m'
Source module existsUnder the conditions of V δ (m') (i) (j) mathematic expectaion, meet：Sm'i
Power module for serial number m' existsUnder the conditions of V δ (m') (i) (j) standard deviation, meet：SiFor K power module standard deviation average value, meetΓiFor
SiInverse, meet：
Define the last moment that t=0 is the idle running of parallel operation system；T is two neighboring load current interval time；
Then t ∈ ((i-1) T, iT], (U >=i >=1) be parallel operation system load electric currentRuning time.Due toNeed to acquire each power module 3V sample data in operational process, thus, host computer need to acquire 3 altogether
× K × V data.Assuming that the time that host computer acquires a data is T1, then system works inState needs
Ttotal=3 × K × V × T1Time, thus must satisfy T >=Ttotal.Again due to current sharing energy data reliability and sampling number
With sampling time T1Correlation, thus T and T need to be comprehensively considered according to actual needs1Size, it is ensured that the reliability of current sharing energy index.
Firstly, by control engineering knowledge it is found that the overshoot that the performance of evaluation system can be responded by system step, adjustment
Time and steady-state deviation index are measured.Thus, parallel operation system electronic load byStep isWhen, we again may be by the electric current output of measurement power module and flow between target reference
Dynamic response evaluates the current sharing energy of power module.By mathematical statistics knowledge it is found that the equal flow standard deviation characterization of parallel system
Be the equal flowable state response process relative overshoot size of system, embody its collection for flowing the output electric current during step response
Moderate can reflect power module current sharing energy index；Secondly, parallel operation system is answered while meeting current sharing energy index
This takes into account the economic benefit of system operation；Finally, by seek the expression formula η between efficiency eta and power module load current i=
Expression formula Γ=Ψ (i) between Φ (i) and standard deviation inverse Γ and power module load current i and corresponding optimal negative
Carry electric currentWithOn the basis of, with the area of η=Φ (i) and Γ=Ψ (i) and for objective function, seekWithBetween
Electric current Iref, so thatSo that it is determined that efficiency and flowing
Load current I when comprehensive performance is optimalref, physical significance shows that parallel operation system is in efficiency under which kind of load current
Stream comprehensive performance is best.
T ∈ ((i-1) T, iT], (U >=i >=1), electronic load current isThe then stream of power module
Target reference current is：
Obtain the output current sampling data data of the power module of serial number m'：Datacurr(m') (i) (j), (K >=m'
>=1, U >=i >=1, V >=j >=1), thus, stream relative deviation δ (m') (i) (j) is：
The power module for seeking serial number m' existsUnder the conditions of number of the relative deviation δ (m') (i) (j) about j
Term hopes Em'iFor：
The power module for seeking serial number m' existsUnder the conditions of mark of the relative deviation δ (m') (i) (j) about j
Quasi- deviation Sm'iFor：
Sm'iPhysical significance be：The power module of serial number m' existsUnder the conditions of relative deviation standard
Deviation, Sm'iIt is smaller show power moduleUnder the conditions of adfluxion moderate performance it is better.
K power module, which is calculated, in stream expectation electric current isWhen mean standard deviation：
Calculate SiΓ reciprocali, meet：
ΓiPhysical significance be：ΓiShow more greatly power moduleUnder the conditions of equal adfluxion moderate performances
Better.
Using Related Computational Methods (fitting of a polynomial, curve matching, interpolating method etc.) to U data pointIt carries out handling the expression formula obtained between Γ and power module load current i：
Γ=Ψ (i), (7)
Allowing in output current scope, is solving load currentMeet：
The power module for seeking serial number m' existsCondition efficiency eta (m') (i) (j) is：
The power module for seeking serial number m' existsUnder the conditions of mathematic expectaion η of the η (m) (i) (j) about jm'i
For：
ηm'iPhysical significance be：The power module of serial number m' existsUnder the conditions of efficiency average value,
ηm'iShow more greatly power moduleUnder the conditions of economic performance it is better, it is more energy saving；
K power module, which is calculated, in stream expectation electric current isOperating condition under average efficiency：
Using Related Computational Methods (fitting of a polynomial, curve matching, interpolating method etc.) to U data pointIt carries out handling the expression formula obtained between efficiency eta and power module load current i：
η=Φ (i), (12)
Allowing in output current scope, is solving load currentMeet：
With the area of η=Φ (i) and Γ=Ψ (i) and for objective function, optimal load electric current I is calculatedref, meet：
Wherein：IrefIt is inWithBetween,It is inWithBetween, i.e., any i is inWithBetween；
IrefPhysical significance be：The parallel operation system effectiveness and stream comprehensive performance be made of K power module is optimal
When load current.
Two, the figure variable declaration of parallel operation system optimization control structure is as follows：
TsOnline power module quantity is calculated for Centralized Controller and acquires the period of power module output current data；M
For online power module quantity；IoutFor the load current of parallel operation system；Curr (m) is the online power module of serial number m
Output current sampling data, m=1,2, ┄, M；M is the serial number of current online power module, IrefFor parallel operation system effectiveness
Load current corresponding to online power module when stream comprehensive performance is optimal；IshareIt is electric online when being run for parallel operation system
Source module output electric current flows target value；Δ I is IshareWith IrefAbsolute value of the difference；σ is IshareWith IrefDifference absolute value
Maximum permissible value.
In t=KTs, K=0, at 1,2,3 ... moment, parallel operation system Centralized Controller starts to acquire by communication bus
The output electric current Curr (m), m=1,2 of M online power modules, ┄, M；
Calculate parallel operation system load electric current Iout, meet：
Calculate online power module output current target value Ishare, meet：
Calculate online power module output current target value IshareWith IrefAbsolute value of the difference Δ I, meet：
Δ I=| Ishare-Iref|, (17)
Judge whether Δ I meets inequality：
Δ I < σ, (18)
In inequality (18) ungratified situation, calculating parallel operation system load electric current is IoutWhen, it efficiency and flows
Online power module quantity N under comprehensive performance optimal conditions*, meet：
In inequality (18) ungratified situation, the online power module regulated quantity Δ N of parallel operation system is calculated*, full
Foot：
ΔN*=N*- M, (20)
Centralized Controller increases (reduction) | Δ N*| a online power module, it is ensured that parallel operation system effectiveness and flow comprehensive
Close best performance.
The present invention provides based on efficiency and current sharing energy area and maximum parallel operation system module quantity controlling party
Method includes the following steps：
(1) the parallel operation system load electric current I of K power module composition is obtained in advanceoutFromAccording to interval
ForEquidistantly change toWhen (cover underloading, semi-load, specified load and overload conditions, U to meet and be necessary for
Positive integer not less than 20；INFor the rated current of power module), each power module is in different loads electric currentIn the case of acquire V output electric current Datacurr(m') (i) (j), output voltage Datavolt(m') (i) (j) and
Input power P (m') (i) (j) (V can determine size according to practical by user), wherein：M' is power module serial number；I is load
The corresponding sequence number value of current value；J is output current acquisition data sequence number；M', i, j meet m'={ 1 ... K }, i={ 1 ... U }, j
=1 ... V }；
(2) power module output current and stream expectation electric current of serial number m' are calculatedRelative deviationMathematic expectaionAnd standard deviation(Sm'iThe smaller equal adfluxion moderate performance for showing module is better)；Calculate K power supply
Module stream expectation electric current beWhen Sm'iAverage valueCalculate SiΓ reciprocali(ΓiShow more greatly
The module equal adfluxion moderate performance that is averaged is better)；Calculate serial number m' power module stream expectation electric current beWhen efficiencyWith efficiency mathematic expectaion
(ηm'iShow that the efficiency of module is higher more greatly)；K power module, which is calculated, in stream expectation electric current isOperating condition under averagely imitate
Rate
(3) using Related Computational Methods (fitting of a polynomial, curve matching, interpolating method etc.) respectively to U data
PointWithCarry out processing obtain expression formula Γ between Γ and power module load current i=
Expression formula η=Φ (i) between Ψ (i) and efficiency eta and power module load current i；
(4) allowing in output current scope, solvingMeetIt is maximum andMeetIt is maximum；
(5) it seeksWithBetween electric current Iref, meetMaximum, i.e.,：Wherein：?WithBetween；
(6) with cycle TsFor the online power module quantity M of interval calculation parallel operation system, and to M online power supply moulds
The output electric current of block is acquired, and the output current data of the online power module of first serial number is labeled as Curr (1), when
Preceding online power module serial number m, enables m=1；
(7) load current of the parallel operation system of M online power module compositions is calculatedWith
The equal current load electric current of line power module
(8) judge | Ishare-IrefWhether |≤σ is true？If it is, entering step (6)；Conversely, then entering step (9)；
(9) calculating online power module output current is reference current IrefWhen online power module quantity N*, i.e.,
(10) judge N*≤1？It is whether true？If it is, entering step (11)；Conversely, entering step (12)；
(11) N is set*=2；This is because N*<It is single supply module for power supply when 2, does not have flow equalizing function.
(12) online power module amount Δ N need to be adjusted by calculating parallel operation system*=N*-M；
(13) judge Δ N*> 0？It is whether true？If it is, entering step (14)；Conversely, entering step (15)；
(14) Centralized Controller increases Δ N*A online power module, subsequently into step (6)；
(15) Centralized Controller reduces Δ N*A online power module, subsequently into step (6).
Embodiment is not construed as the limitation to invention, but any based on spiritual improvements introduced of the invention, all Ying Ben
Within the protection scope of invention.
Claims (3)
1. one kind is existed based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method, feature
In：Its step are as follows：
(1) the parallel operation system load electric current I of K power module composition is obtainedoutFromIt is divided into according toEquidistantly change toWhen, each power module is in different loads electric currentIn the case of adopt
Collect V output electric current Datacurr(m') (i) (j), output voltage Datavolt(m') (i) (j) and input power, wherein：M' is electricity
Source module serial number；I is the corresponding sequence number value of load current value；J is output current acquisition data sequence number；M', i, j meet m'=
1 ... K }, i=1 ... U }, j=1 ... V }；INFor the rated current of power module；
(2) power module output current and stream expectation electric current of serial number m' are obtainedRelative deviationMathematic expectaionAnd standard deviationK power module, which is obtained, in stream expectation electric current isWhen Sm'iAverage valueCalculate SiΓ reciprocali；Obtain serial number m' power module stream expectation electric current beWhen efficiencyWith efficiency mathematic expectaion
K power module, which is obtained, in stream expectation electric current isOperating condition under average efficiency
(3) respectively to U data pointWithIt carries out processing and obtains ΓiIt is loaded with power module
Electric current iNBetween expression formula Γi=Ψ (iN) and efficiency eta and power module load current iNBetween expression formula η=Φ (iN)；
(4) allowing in output current scope, obtaining and meetIt is maximumAnd meetIt is maximum
(5) it obtainsWithBetween and meetMaximum electric current Iref, i.e.,：Wherein：?WithBetween；
(6) with cycle TsFor the online power module quantity M of interval calculation parallel operation system, and to the defeated of M online power modules
Electric current is acquired out, the output current data of the online power module of m-th of serial number is labeled as Curr (m), m is currently to exist
The serial number of line power module；
(7) load current of the parallel operation system of M online power module compositions is calculatedWith online power supply
The equal current load electric current of module
(8)|Ishare-Iref|≤σ then continues the operation of step (6)；Conversely, obtaining online power module output current then as reference
Electric current IrefWhen online power module quantity N*,
(9)N*≤ 1 is arranged N*=2；Conversely, then obtaining the online power module amount Δ N that parallel operation system need to be adjusted*=
N*- M, according to Δ N*It is positive and negative, Centralized Controller increases or decreases | Δ N*| a online power module.
2. according to claim 1 based on efficiency and current sharing energy area and maximum parallel operation system module quantity control
Method processed, it is characterised in that：In step (1)-step (4)：
(1) at t ∈ [(i-1) T, iT], U >=i >=1, electronic load current isWhen, obtain the equal of power module
Flow target reference current：
(2) the power module output current sampled data of serial number m' is obtained：
Datacurr(m') (i) (j), K >=m' >=1, U >=i >=1, V >=j >=1, and obtain it and flow relative deviation δ (m') (i)
(j)：
(3) power module for obtaining serial number m' existsUnder the conditions of relative deviation δ (m') (i) (j) about j's
Mathematic expectaion Em'i：
(4) power module for obtaining serial number m' existsUnder the conditions of relative deviation δ (m') (i) (j) about j's
Standard deviation Sm'i：
Sm'iIndicate that the power module of serial number m' existsUnder the conditions of relative deviation standard deviation；
(5) obtaining K power module in stream expectation electric current isWhen mean standard deviation：
(6) S is obtainediΓ reciprocali：
(7) to U data pointIt carries out processing and obtains ΓiWith power module load current iNBetween relationship：Γi=
Ψ(iN)；Allowing in output current scope, is obtaining and meetLoad current
(8) power module for obtaining serial number m' existsCondition efficiency eta (m') (i) (j)：
(9) power module for obtaining serial number m' existsUnder the conditions of condition efficiency eta (m') (i) (j) about j's
Mathematic expectaion ηm'i：
ηm'iIndicate that the power module of serial number m' existsUnder the conditions of efficiency average value；
(10) obtaining K power module in stream expectation electric current isOperating condition under average efficiency：
(11) are to U data pointIt carries out processing and obtains efficiency eta and power module load current iNBetween relationship：
η=Φ (iN), allowing in output current scope, is obtaining and meet：Load current
(12) are with η=Φ (iN) and Γ=Ψ (iN) area and be objective function, obtain meet：
Optimal load electric current Iref,
Wherein：IrefIt is inWithBetween,It is inWithBetween.
3. according to claim 1 based on efficiency and current sharing energy area and maximum parallel operation system module quantity control
Method processed, it is characterised in that：Step (3) is using fitting of a polynomial, curve matching, interpolating method respectively to U data pointWithIt is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528419.3A CN106160016B (en) | 2016-06-30 | 2016-06-30 | Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528419.3A CN106160016B (en) | 2016-06-30 | 2016-06-30 | Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106160016A CN106160016A (en) | 2016-11-23 |
| CN106160016B true CN106160016B (en) | 2018-11-27 |
Family
ID=58061907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610528419.3A Expired - Fee Related CN106160016B (en) | 2016-06-30 | 2016-06-30 | Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106160016B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116896137A (en) * | 2023-09-08 | 2023-10-17 | 北京和瑞储能科技有限公司 | Reusable power supply system for flow battery and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036268A (en) * | 2011-09-30 | 2013-04-10 | 三洋电机株式会社 | Power supply device |
| CN104410132A (en) * | 2014-12-19 | 2015-03-11 | 哈尔滨工业大学 | Voltage balancing device of supercapacitor and control method of voltage balancing device |
| CN104539187A (en) * | 2014-12-01 | 2015-04-22 | 东北电力大学 | Novel active front-end controller topological structure |
| US9136713B1 (en) * | 2012-01-13 | 2015-09-15 | Win Cheng | Proactive and highly efficient active balance apparatus for a battery power system |
-
2016
- 2016-06-30 CN CN201610528419.3A patent/CN106160016B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036268A (en) * | 2011-09-30 | 2013-04-10 | 三洋电机株式会社 | Power supply device |
| US9136713B1 (en) * | 2012-01-13 | 2015-09-15 | Win Cheng | Proactive and highly efficient active balance apparatus for a battery power system |
| CN104539187A (en) * | 2014-12-01 | 2015-04-22 | 东北电力大学 | Novel active front-end controller topological structure |
| CN104410132A (en) * | 2014-12-19 | 2015-03-11 | 哈尔滨工业大学 | Voltage balancing device of supercapacitor and control method of voltage balancing device |
Non-Patent Citations (1)
| Title |
|---|
| 多逆变器型微网运行与复合控制研究;吕志鹏;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20130515(第05期);第C042-18页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106160016A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106054614B (en) | Take into account the system ambiguous control method of parallel operation of efficiency and current sharing energy | |
| CN106094523B (en) | Based on efficiency and flow index area and maximum parallel operation system optimization method | |
| CN106160016B (en) | Based on efficiency and current sharing energy area and maximum parallel operation system module number controlling method | |
| CN106160021B (en) | Method is determined based on the parallel operation system optimal point of efficiency and equal flow standard difference weighted sum matrix | |
| CN106159934B (en) | Based on efficiency and flow the parallel operation system optimized control method of index golden section | |
| CN106253355B (en) | Parallel operation system power supply module number fuzzy control method | |
| CN106127609B (en) | Parallel operation system module number controlling method | |
| CN106208036B (en) | Parallel operation system optimal point determines method | |
| CN106160015B (en) | Parallel operation system module number controlling method based on efficiency and current sharing energy golden section | |
| CN106160011B (en) | Based on efficiency and flow the parallel operation system module number controlling method of index golden section | |
| CN106026205B (en) | Based on efficiency and current sharing energy area and maximum parallel operation system optimized control method | |
| CN106094522B (en) | Parallel operation system module number controlling method | |
| CN106208037B (en) | Power supply system optimal control method based on efficiency and current sharing energy golden section | |
| CN106160019B (en) | It based on efficiency and flows index area and maximum parallel operation system optimal point determines method | |
| CN106169776B (en) | Parallel operation system power supply module number fuzzy control method | |
| CN106127349B (en) | Parallel operation system optimal point determines method | |
| CN106130000B (en) | It takes into account efficiency and flows the system ambiguous control method of parallel operation of index | |
| CN106026203B (en) | Based on efficiency and stream deviation it is expected the parallel operation system optimized control method of weighted sum matrix | |
| CN106160014B (en) | A kind of parallel operation system power supply module number control method based on grey correlation | |
| CN106157169B (en) | A kind of parallel operation system optimized control method based on grey correlation | |
| CN106160018B (en) | Parallel operation system optimal point determines method | |
| CN106130001B (en) | A kind of stream deviation it is expected the parallel operation system power supply module number gray discrete system method of minimum | |
| CN106160013B (en) | A kind of stream deviation it is expected the parallel operation system grey optimal control method of minimum | |
| CN106130080B (en) | Based on equal flow standard difference rectangular array and minimum parallel operation system optimized control method | |
| CN106169775B (en) | Parallel operation system module number controlling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20210630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |