CN109245560A - Bi-directional power conversion system and transform method based on insulated gate bipolar transistor - Google Patents
Bi-directional power conversion system and transform method based on insulated gate bipolar transistor Download PDFInfo
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- CN109245560A CN109245560A CN201811194588.3A CN201811194588A CN109245560A CN 109245560 A CN109245560 A CN 109245560A CN 201811194588 A CN201811194588 A CN 201811194588A CN 109245560 A CN109245560 A CN 109245560A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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Abstract
The invention belongs to voltage conversion system technical fields, disclose a kind of bi-directional power conversion system and transform method based on insulated gate bipolar transistor, system is provided with circuit board, circuit board upper end is equipped with current detector, current detector lower end is powered with current protector, current protector lower end is powered with insulated gate bipolar transistor chip, insulated gate bipolar transistor chip lower end is powered with freewheeling diode chip, circuit board ends soldering has insulating gate type field effect tube and double pole triode, insulating gate type field effect tube, double pole triode respectively with insulated gate bipolar transistor chip, the electrical connection of freewheeling diode chip.The charge mode that the present invention uses can capacity according to battery, characteristic, charge power is adjusted by the increase and decrease of module, and DC voltage utilization rate is high, output voltage is adjustable, anti-disturbance ability is strong, can be realized the two-way flow of energy.
Description
Technical field
The invention belongs to voltage switch technology field more particularly to a kind of two-way function based on insulated gate bipolar transistor
Rate transformation system and transform method.
Background technique
Currently, the prior art commonly used in the trade be it is such,
The compound full-control type that insulated gate bipolar transistor is made of double pole triode and insulating gate type field effect tube
Voltage driven type power semiconductor.In recent years, the increase with country to the support dynamics of new-energy automobile, charges therewith
Infrastructure turns the main problem for restricting new-energy automobile development into.Traditional charging equipment power grid output voltage is unstable
Surely cause DC voltage utilization rate lower, and output voltage is unadjustable, be unable to satisfy the need of different automobile types, different charging modes
It asks；And the time that insulated gate bipolar transistor bears overcurrent is only a few microseconds, resistance to inflow-rate of water turbine is small, when lacking in driving circuit
When protecting equipment, overcurrent will damage insulated gate bipolar transistor.
In conclusion problem of the existing technology is:
Traditional charging equipment power grid output voltage is unstable to cause DC voltage utilization rate lower, and output voltage can not
It adjusts, is unable to satisfy the demand of different automobile types, different charging modes；
And the time that insulated gate bipolar transistor bears overcurrent is only a few microseconds, resistance to inflow-rate of water turbine is small, works as driving circuit
When middle shortage protection equipment, overcurrent will damage insulated gate bipolar transistor.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of two-way function based on insulated gate bipolar transistor
Rate transformation system and transform method.
The invention is realized in this way a kind of bi-directional power conversion method based on insulated gate bipolar transistor, described
Bi-directional power conversion method based on insulated gate bipolar transistor includes: electric to inputting in circuit by current detector first
Stream is detected, and then carries out overcurrent protection to insulated gate bipolar transistor by current protector；
Insulating gate type field effect tube is controlled by insulated gate bipolar transistor chip；
Double pole triode is controlled by freewheeling diode chip；
IGBT module after encapsulation directly applies to AC/DC converter；Input current passes through afterflow
Diode chip for backlight unit input rectifier rectifies input current by rectifier, and subsequent electric current is filtered through wave filter,
It is finally transmitted to AC/DC converter through over commutation and filtered input current, by AC/DC converter by the alternating current of input
Source is converted into the direct voltage output needed.
Further, the method detected to input current in circuit includes:
The ordering vector for providing each evaluation index of current detecting finds out subjective weight using orderly binary comparison method；
The initial decision matrix formed according to the value by each evaluation index seeks objective weight using VC Method；
Comprehensive weight is acquired using vector similarity theory；
By the initial decision matrix conversion of real number form at the decision matrix of Vague collection form, and weight vectors are also turned
It is melted into the decision matrix of Vague collection form；Electric current is ranked up using the PROMETHEE method based on Vague collection form, is obtained
To reasonable current value,
The subjectivity weight is acquired by orderly binary comparison method method particularly includes:
Step 1: determining evaluation object and expert's collection: X is the entire objects collection investigated, and is denoted as X={ x1,x2,...xNBe
It participates in determining that the expert of index weights integrates as P={ p1,p2...pL}；
Step 2: being the sequence of each index using set value iterative method: weight is { λ1,λ2,...λL, according to weight in index set
Degree is wanted to be ranked up index, the index ordered set that k (1≤k≤L) chooses is Xk=(x3,x5,x1,xN...,xN-1), in formula
x3Positioned at XkFirst position, i.e., expression x3Think most important in k, according to each index in XkIn position assign referring to respectively
Score is marked, in XkMiddle x3It is corresponding to be scored at N, x5It is corresponding to be scored at N-1, xN-1It is corresponding to be scored at 1；
μi,k(1≤i≤N, 1≤k≤L) is index i score obtained at k, is enabledIt is commented as synthesis
Point, 1≤i≤N in formula, according to giIt is descending new sequence is carried out to evaluation index,
Step 3: being compared acquisition comparator matrix to adjacent evaluation index respectively；
By comparing the significance level of the relatively latter index of previous index in adjacent index, evaluation interval, section end are provided
Point value takes adjacent rkNumerical value, relative importance are between two r of the twokBetween the corresponding significance level of numerical value；
Step 4: converting point value by following formula for section:
In formula, r 'ijIt is expert i to the lower bound in the evaluations matrix of index j, r "ijFor the upper bound in evaluations matrix, j=1,
2 ..., n-1；
Step 5: determining the weight of evaluation index: being compared since N number of index is adjacent, obtain N-1 fiducial value.
Further, the method for the DC voltage that the AC power source of input is converted into needing is included: by AC/DC converter
The predefined parameter of DC voltage is initialized first；
It is input quantity with b1, c1, generates first rule；B1 is the difference power at the 2nd moment and the 1st moment, and c1 is
Sampling step length；
Determine first regular parameter；
It observes b (n), the arrival of c (n), b (n) is the difference power at n-th moment and (n-1)th moment, and c (n) is (n-1)th
The sampling step length at a moment；
It calculates mahalanobis distance and finds mdkmin；
It calculates actual output error and determines corresponding kd, and with mahalanobis distance mdkIt is compared；
If mdk> kd, direct current voltage error ekIf direct current voltage error ek≤ck, then observation controls whether to complete,
Algorithm terminates；If direct current voltage error ek> ck, then new rule is generated, determines new parameter, calculates strictly all rules error slip
ERR；If error slip ERR is less than threshold value, just leaves out the observation of this rule and control whether to complete, algorithm terminates；If
Error slip ERR is not less than threshold value, then continues to generate new rule, until meeting error slip ERR less than threshold value；
If mdk≤kd, direct current voltage error ekIf direct current voltage error ek> ke, then the quick of input variable is calculated
Perceptual BijAnd width is adjusted, consequent parameter is adjusted, observation controls whether to complete, and algorithm terminates；If systematic error ek≥ke, then
It meets the requirements, observation controls whether to complete, and algorithm terminates.
Further, error:
||ek| |=| | tk-yk||
Wherein k-th of moment desired output is tk；
If ek>ke, then a new rule is increased by；Wherein:
Wherein, eminRefer to output accuracy, emaxRefer to worst error, k refers to that the number of study, β ∈ (0,1) refer to
Be convergence constant, derive:
U fuzzy rule is produced, when a new sample occurs, the variable drop of input is subordinate to letter to one-dimensional
Number space calculates dataWith boundary set φiBetween Euclidean distance edi(j), and its minimum value ed is foundi(jn), such as
Fruit:
edi(jn)≤kmf
Without distributing new Gaussian function, otherwise just need to generate a new Gaussian function, its width is determined by following formula
Fixed, center is provided that
ci(u+1)=xi k；
Model are as follows: D=H θ+E；Wherein, D=TTFor desired output, H=φT=(h1…hv), θ is its real parameter, E
It is error vector；H resolves into orthogonal base vectors collection: H=PN by QR, wherein P=(p1, p2..., pv)；
Mahalanobis distance:
It enables:
If:
mdk,min=mdk(J) > kd
Then show to increase a new rule because existing system is insufficient for ε-completeness, wherein kdChange in this way:
In above formula, r refers to attenuation constant.
Another object of the present invention is to provide a kind of bi-directional power conversion computer based on insulated gate bipolar transistor
Program, the bi-directional power conversion computer program based on insulated gate bipolar transistor are realized described double based on insulated gate
The bi-directional power conversion method of bipolar transistor.
Another object of the present invention is to provide a kind of computer readable storage medium, including instruction, when its on computers
When operation, so that computer executes the bi-directional power conversion method based on insulated gate bipolar transistor.
Another object of the present invention is to provide a kind of terminal, and it is described based on insulated gate bipolar that the terminal at least carries realization
The controller of the bi-directional power conversion method of transistor npn npn.
Another object of the present invention is to provide a kind of bi-directional power conversion AC-DC system based on insulated gate bipolar transistor
System, is provided with
Circuit board；
The circuit board upper end is equipped with current detector, and the current detector lower end is powered with current protector, institute
It states current protector lower end and is powered with insulated gate bipolar transistor chip, insulated gate bipolar transistor chip lower end electricity
It is connected with freewheeling diode chip, the circuit board ends soldering has insulating gate type field effect tube and double pole triode, described exhausted
Edge grid-type field-effect tube, double pole triode are electrically connected with insulated gate bipolar transistor chip, freewheeling diode chip respectively；
The freewheeling diode chip is electrically connected with rectifier, filter, and the filter is electrically connected with AC/DC converter
It connects.
Further, between the insulated gate bipolar transistor chip and freewheeling diode chip bridge in the circuit board.
Further, the power supply number of phases of the AC/DC converter is multiphase.
Another object of the present invention is to provide a kind of voltage conversion platform, and the voltage conversion platform at least carries described
Bi-directional power conversion AC-DC system based on insulated gate bipolar transistor.
Advantages of the present invention and good effect are as follows:
Insulated gate bipolar can be played using the bi-directional power conversion AC-DC system based on insulated gate bipolar transistor
The distinctive driving power of transistor is small and the features such as saturation pressure is low, improve the power factor of power grid, and AC/DC is combined to convert
The feature of device adjustable DC pressure stabilizing electricity, can reduce and realize two-way energy flow to electric network pollution, improve DC voltage benefit
With rate height；The electric current in driving circuit can be detected by current detector, then by current protector to driving
Circuit is protected, to carry out overcurrent protection to insulated gate bipolar transistor.The charge mode that this system uses can basis
The capacity of battery, characteristic adjust charge power by the increase and decrease of module, and DC voltage utilization rate is high, output voltage is adjustable,
Anti-disturbance ability is strong, can be realized the two-way flow of energy.
In the method that the present invention detects input current in circuit, the sequence of each evaluation index of current detecting is provided
Vector finds out subjective weight using orderly binary comparison method；
The initial decision matrix formed according to the value by each evaluation index seeks objective weight using VC Method；
Comprehensive weight is acquired using vector similarity theory；
By the initial decision matrix conversion of real number form at the decision matrix of Vague collection form, and weight vectors are also turned
It is melted into the decision matrix of Vague collection form；Electric current is ranked up using the PROMETHEE method based on Vague collection form, is obtained
To reasonable current value,
In the method for the DC voltage that the AC power source of input is converted into needing by AC/DC converter, initialization is straight first
The predefined parameter of galvanic electricity pressure；
It is input quantity with b1, c1, generates first rule；B1 is the difference power at the 2nd moment and the 1st moment, and c1 is
Sampling step length；
Determine first regular parameter；It observes b (n), the arrival of c (n), b (n) is n-th of moment and (n-1)th moment
Difference power, c (n) be (n-1)th moment sampling step length；It calculates mahalanobis distance and finds mdkmin；Actual output is calculated to miss
Difference determines corresponding kd, and with mahalanobis distance mdkIt is compared；
The operation of the above method and model ensure that the demand of detection and the voltage conversion of electric current, mention for the power supply of equipment
Necessary condition is supplied.
Detailed description of the invention
Fig. 1 is the bi-directional power conversion AC-DC system provided in an embodiment of the present invention based on insulated gate bipolar transistor
Structural schematic diagram；
Fig. 2 is AC/DC converter schematic diagram of internal structure provided in an embodiment of the present invention；
In figure: 1, circuit board；2, current detector；3, current protector；4, insulated gate bipolar transistor chip；5, absolutely
Edge grid-type field-effect tube；6, double pole triode；7, freewheeling diode chip；8, rectifier；9, filter；10, AC/DC is converted
Device.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows.
Bi-directional power conversion method provided in an embodiment of the present invention based on insulated gate bipolar transistor, comprising: first
Input current in circuit is detected by current detector, then by current protector to insulated gate bipolar transistor
Carry out overcurrent protection；
Insulating gate type field effect tube is controlled by insulated gate bipolar transistor chip；
Double pole triode is controlled by freewheeling diode chip；
IGBT module after encapsulation directly applies to AC/DC converter；Input current passes through afterflow
Diode chip for backlight unit input rectifier rectifies input current by rectifier, and subsequent electric current is filtered through wave filter 9
Wave is finally transmitted to AC/DC converter through over commutation and filtered input current, by AC/DC converter 10 by input
AC power source is converted into the direct voltage output needed.
The method detected to input current in circuit includes:
The ordering vector for providing each evaluation index of current detecting finds out subjective weight using orderly binary comparison method；
The initial decision matrix formed according to the value by each evaluation index seeks objective weight using VC Method；
Comprehensive weight is acquired using vector similarity theory；
By the initial decision matrix conversion of real number form at the decision matrix of Vague collection form, and weight vectors are also turned
It is melted into the decision matrix of Vague collection form；Electric current is ranked up using the PROMETHEE method based on Vague collection form, is obtained
To reasonable current value,
The subjectivity weight is acquired by orderly binary comparison method method particularly includes:
Step 1: determining evaluation object and expert's collection: X is the entire objects collection investigated, and is denoted as X={ x1,x2,...xNBe
It participates in determining that the expert of index weights integrates as P={ p1,p2...pL}；
Step 2: being the sequence of each index using set value iterative method: weight is { λ1,λ2,...λL, according to weight in index set
Degree is wanted to be ranked up index, the index ordered set that k (1≤k≤L) chooses is Xk=(x3,x5,x1,xN...,xN-1), in formula
x3Positioned at XkFirst position, i.e., expression x3Think most important in k, according to each index in XkIn position assign referring to respectively
Score is marked, in XkMiddle x3It is corresponding to be scored at N, x5It is corresponding to be scored at N-1, xN-1It is corresponding to be scored at 1；
μi,k(1≤i≤N, 1≤k≤L) is index i score obtained at k, is enabledIt is commented as synthesis
Point, 1≤i≤N in formula, according to giIt is descending new sequence is carried out to evaluation index,
Step 3: being compared acquisition comparator matrix to adjacent evaluation index respectively；
By comparing the significance level of the relatively latter index of previous index in adjacent index, evaluation interval, section end are provided
Point value takes adjacent rkNumerical value, relative importance are between two r of the twokBetween the corresponding significance level of numerical value；
Step 4: converting point value by following formula for section:
In formula, r 'ijIt is expert i to the lower bound in the evaluations matrix of index j, r "ijFor the upper bound in evaluations matrix, j=1,
2 ..., n-1；
Step 5: determining the weight of evaluation index: being compared since N number of index is adjacent, obtain N-1 fiducial value.
The method of DC voltage that the AC power source of input is converted into needing includes: by AC/DC converter
The predefined parameter of DC voltage is initialized first；
It is input quantity with b1, c1, generates first rule；B1 is the difference power at the 2nd moment and the 1st moment, and c1 is
Sampling step length；
Determine first regular parameter；
It observes b (n), the arrival of c (n), b (n) is the difference power at n-th moment and (n-1)th moment, and c (n) is (n-1)th
The sampling step length at a moment；
It calculates mahalanobis distance and finds mdkmin；
It calculates actual output error and determines corresponding kd, and with mahalanobis distance mdkIt is compared；
If mdk> kd, direct current voltage error ekIf direct current voltage error ek≤ck, then observation controls whether to complete,
Algorithm terminates；If direct current voltage error ek> ck, then new rule is generated, determines new parameter, calculates strictly all rules error slip
ERR；If error slip ERR is less than threshold value, just leaves out the observation of this rule and control whether to complete, algorithm terminates；If
Error slip ERR is not less than threshold value, then continues to generate new rule, until meeting error slip ERR less than threshold value；
If mdk≤kd, direct current voltage error ekIf direct current voltage error ek> ke, then the quick of input variable is calculated
Perceptual BijAnd width is adjusted, consequent parameter is adjusted, observation controls whether to complete, and algorithm terminates；If systematic error ek≥ke, then
It meets the requirements, observation controls whether to complete, and algorithm terminates.
Further, error:
||ek| |=| | tk-yk||
Wherein k-th of moment desired output is tk；
If ek>ke, then a new rule is increased by；Wherein:
Wherein, eminRefer to output accuracy, emaxRefer to worst error, k refers to that the number of study, β ∈ (0,1) refer to
Be convergence constant, derive:
U fuzzy rule is produced, when a new sample occurs, the variable drop of input is subordinate to letter to one-dimensional
Number space calculates dataWith boundary set φiBetween Euclidean distance edi(j), and its minimum value ed is foundi(jn), such as
Fruit:
edi(jn)≤kmf
Without distributing new Gaussian function, otherwise just need to generate a new Gaussian function, its width is determined by following formula
Fixed, center is provided that
ci(u+1)=xi k；
Model are as follows: D=H θ+E；Wherein, D=TTFor desired output, H=φT=(h1…hv), θ is its real parameter, E
It is error vector；H resolves into orthogonal base vectors collection: H=PN by QR, wherein P=(p1, p2..., pv)；
Mahalanobis distance:
It enables:
If:
mdk,min=mdk(J) > kd
Then show to increase a new rule because existing system is insufficient for ε-completeness, wherein kdChange in this way:
In above formula, r refers to attenuation constant.
Structure of the invention is explained in detail with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the bi-directional power conversion provided in an embodiment of the present invention based on insulated gate bipolar transistor
AC-DC system includes: circuit board 1, current detector 2, current protector 3, insulated gate bipolar transistor chip 4, insulated gate
Type field-effect tube 5, double pole triode 6, freewheeling diode chip 7, rectifier 8, filter 9, AC/DC converter 10.
1 upper end of circuit board is equipped with current detector 2, and 2 lower end of current detector is powered with current protector
3,3 lower end of current protector is powered with insulated gate bipolar transistor chip 4, the insulated gate bipolar transistor chip
4 lower ends are powered with freewheeling diode chip 7, and the 1 both ends soldering of circuit board has insulating gate type field effect tube 5 and ambipolar three pole
Pipe 6, the insulating gate type field effect tube 5, double pole triode 6 respectively with insulated gate bipolar transistor chip 4, two pole of afterflow
Tube chip 7 is electrically connected；
The freewheeling diode chip 7 is electrically connected with rectifier 8, filter 9, the filter 9 and AC/DC converter 10
Electrical connection.
Between the insulated gate bipolar transistor chip 4 and freewheeling diode chip 7 bridge in the circuit board.The AC/
The power supply number of phases of DC converter 10 is multiphase.
The working principle of the invention: input current in circuit is detected by current detector 2 first, is then passed through
Current protector 3 carries out overcurrent protection to insulated gate bipolar transistor；It is insulated by 4 Duis of insulated gate bipolar transistor chip
Grid-type field-effect tube 5 is controlled, and is controlled by freewheeling diode chip 7 double pole triode 6, the insulation after encapsulation
Grid bipolar type transistor module directly applies to AC/DC converter 10；Input current passes through 7 input rectifying of freewheeling diode chip
Device 8 rectifies input current by rectifier 8, and subsequent electric current is filtered through wave filter 9, through over commutation and filtering
Input current afterwards is finally transmitted to AC/DC converter 10, is converted into needing by the AC power source of input by AC/DC converter 10
The direct voltage output wanted, charger use.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When using entirely or partly realizing in the form of a computer program product, the computer program product include one or
Multiple computer instructions.When loading on computers or executing the computer program instructions, entirely or partly generate according to
Process described in the embodiment of the present invention or function.The computer can be general purpose computer, special purpose computer, computer network
Network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or from one
Computer readable storage medium is transmitted to another computer readable storage medium, for example, the computer instruction can be from one
A web-site, computer, server or data center pass through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)
Or wireless (such as infrared, wireless, microwave etc.) mode is carried out to another web-site, computer, server or data center
Transmission).The computer-readable storage medium can be any usable medium or include one that computer can access
The data storage devices such as a or multiple usable mediums integrated server, data center.The usable medium can be magnetic Jie
Matter, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid
State Disk (SSD)) etc..
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (10)
1. a kind of bi-directional power conversion method based on insulated gate bipolar transistor, which is characterized in that described to be based on insulated gate
The bi-directional power conversion method of bipolar junction transistor includes:
Input current in circuit is detected by current detector, then by current protector to insulated gate bipolar crystalline substance
Body pipe carries out overcurrent protection；
Insulating gate type field effect tube is controlled by insulated gate bipolar transistor chip；
Double pole triode is controlled by freewheeling diode chip；
IGBT module after encapsulation directly applies to AC/DC converter；Input current passes through two pole of afterflow
Tube chip input rectifier rectifies input current by rectifier, and subsequent electric current is filtered through wave filter, passes through
Rectification and filtered input current are finally transmitted to AC/DC converter, are turned the AC power source of input by AC/DC converter
Change the DC voltage of needs and output into.
2. the bi-directional power conversion method based on insulated gate bipolar transistor as described in claim 1, which is characterized in that right
The method that input current is detected in circuit includes:
The ordering vector for providing each evaluation index of current detecting finds out subjective weight using orderly binary comparison method；
The initial decision matrix formed according to the value by each evaluation index seeks objective weight using VC Method；
Comprehensive weight is acquired using vector similarity theory；
By the initial decision matrix conversion of real number form at the decision matrix of Vague collection form, and weight vectors are also translated into
The decision matrix of Vague collection form；Electric current is ranked up using the PROMETHEE method based on Vague collection form, is closed
The current value of reason,
The subjectivity weight is acquired by orderly binary comparison method method particularly includes:
Step 1: determining evaluation object and expert's collection: X is the entire objects collection investigated, and is denoted as X={ x1,x2,...xNIt is to participate in
Determine that the expert of index weights integrates as P={ p1,p2...pL}；
Step 2: being the sequence of each index using set value iterative method: weight is { λ1,λ2,...λL, according to important journey in index set
Degree is ranked up index, and the index ordered set that k (1≤k≤L) chooses is Xk=(x3,x5,x1,xN...,xN-1), x in formula3Position
In XkFirst position, i.e., expression x3Think most important in k, according to each index in XkIn position assign index respectively and obtain
Point, in XkMiddle x3It is corresponding to be scored at N, x5It is corresponding to be scored at N-1, xN-1It is corresponding to be scored at 1；
μi,k(1≤i≤N, 1≤k≤L) is index i score obtained at k, is enabledAs comprehensive score, formula
In 1≤i≤N, according to giIt is descending new sequence is carried out to evaluation index,
Step 3: being compared acquisition comparator matrix to adjacent evaluation index respectively；
By comparing the significance level of the relatively latter index of previous index in adjacent index, evaluation interval, interval endpoint value are provided
Take adjacent rkNumerical value, relative importance are between two r of the twokBetween the corresponding significance level of numerical value；
Step 4: converting point value by following formula for section:
In formula, rij' it is expert i to the lower bound in the evaluations matrix of index j, rij" for the upper bound in evaluations matrix, j=1,2 ...,
n-1；
Step 5: determining the weight of evaluation index: being compared since N number of index is adjacent, obtain N-1 fiducial value.
3. the bi-directional power conversion method based on insulated gate bipolar transistor as described in claim 1, which is characterized in that
The method of DC voltage that the AC power source of input is converted into needing includes: by AC/DC converter
The predefined parameter of DC voltage is initialized first；
It is input quantity with b1, c1, generates first rule；B1 is the difference power at the 2nd moment and the 1st moment, and c1 is sampling
Step-length；
Determine first regular parameter；
It observes b (n), the arrival of c (n), b (n) is the difference power at n-th moment and (n-1)th moment, when c (n) is (n-1)th
The sampling step length at quarter；
It calculates mahalanobis distance and finds mdkmin；
It calculates actual output error and determines corresponding kd, and with mahalanobis distance mdkIt is compared；
If mdk> kd, direct current voltage error ekIf direct current voltage error ek≤ck, then observation controls whether to complete, algorithm
Terminate；If direct current voltage error ek> ck, then new rule is generated, determines new parameter, calculates strictly all rules error slip ERR；
If error slip ERR is less than threshold value, just leaves out the observation of this rule and control whether to complete, algorithm terminates；If error
Slip ERR is not less than threshold value, then continues to generate new rule, until meeting error slip ERR less than threshold value；
If mdk≤kd, direct current voltage error ekIf direct current voltage error ek> ke, then the sensibility of input variable is calculated
BijAnd width is adjusted, consequent parameter is adjusted, observation controls whether to complete, and algorithm terminates；If systematic error ek≥ke, then meet
It is required that observation controls whether to complete, algorithm terminates.
4. the bi-directional power conversion method based on insulated gate bipolar transistor as claimed in claim 3, which is characterized in that accidentally
Difference:
||ek| |=| | tk-yk||
Wherein k-th of moment desired output is tk；
If ek>ke, then a new rule is increased by；Wherein:
Wherein, eminRefer to output accuracy, emaxRefer to worst error, k refers to that the number of study, β ∈ (0,1) refer to
Convergence constant is derived:
U fuzzy rule is produced, when a new sample occurs, the variable drop input is empty to one-dimensional membership function
Between, calculate dataWith boundary set φiBetween Euclidean distance edi(j), and its minimum value ed is foundi(jn), if:
edi(jn)≤kmf
Without the new Gaussian function of distribution, otherwise just needing to generate a new Gaussian function, its width is determined by following formula,
Center is provided that
ci(u+1)=xi k；
Model are as follows: D=H θ+E；Wherein, D=TTFor desired output, H=φT=(h1…hv), θ is its real parameter, and E is to miss
Difference vector；H resolves into orthogonal base vectors collection: H=PN by QR, wherein P=(p1, p2..., pv)；
Mahalanobis distance:
It enables:
If:
mdk,min=mdk(J) > kd
Then show to increase a new rule because existing system is insufficient for ε-completeness, wherein kdChange in this way:
In above formula, r refers to attenuation constant.
5. a kind of bi-directional power conversion computer program based on insulated gate bipolar transistor, which is characterized in that described to be based on
The bi-directional power conversion computer program of insulated gate bipolar transistor realize described in Claims 1 to 4 any one based on
The bi-directional power conversion method of insulated gate bipolar transistor.
6. a kind of terminal, which is characterized in that the terminal, which is at least carried, to be realized described in Claims 1 to 4 any one based on exhausted
The controller of the bi-directional power conversion method of edge grid bipolar junction transistor.
7. a kind of computer readable storage medium, including instruction, when run on a computer, so that computer is executed as weighed
Benefit requires the bi-directional power conversion method described in 1-4 any one based on insulated gate bipolar transistor.
8. a kind of bi-directional power conversion method realized described in claim 1 based on insulated gate bipolar transistor based on insulation
The bi-directional power conversion AC-DC system of grid bipolar junction transistor, which is characterized in that described based on insulated gate bipolar transistor
Bi-directional power conversion AC-DC system, is provided with
Circuit board；
The circuit board upper end is equipped with current detector, and the current detector lower end is powered with current protector, the electricity
Stream protector lower end is powered with insulated gate bipolar transistor chip, and insulated gate bipolar transistor chip lower end is powered with
Freewheeling diode chip, the circuit board ends soldering have insulating gate type field effect tube and double pole triode, the insulated gate
Type field-effect tube, double pole triode are electrically connected with insulated gate bipolar transistor chip, freewheeling diode chip respectively；
The freewheeling diode chip is electrically connected with rectifier, filter, and the filter is electrically connected with AC/DC converter.
9. the bi-directional power conversion AC-DC system based on insulated gate bipolar transistor, feature exist as claimed in claim 8
In, the insulated gate bipolar transistor chip and freewheeling diode chip bridge joint in the circuit board between；
The power supply number of phases of the AC/DC converter is multiphase.
10. a kind of voltage conversion platform, which is characterized in that the voltage conversion platform at least carries base according to any one of claims 8
In the bi-directional power conversion AC-DC system of insulated gate bipolar transistor.
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| CN110401203A (en) * | 2019-07-30 | 2019-11-01 | 江苏舾普泰克自动化科技有限公司 | A kind of inverter peculiar to vessel based on reactive power compensation technology |
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| CN105046574A (en) * | 2015-04-29 | 2015-11-11 | 国家电网公司 | Black-start scheme evaluation method |
| CN106527568A (en) * | 2016-12-15 | 2017-03-22 | 中国人民解放军后勤工程学院 | Maximum power tracker control method based on generalized dynamic fuzzy neural network |
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| CN103973134A (en) * | 2013-01-30 | 2014-08-06 | 广东美的制冷设备有限公司 | Direct-current power device and PWM (pulse width modulation) pulse control method for improving power factor thereof |
| CN105046574A (en) * | 2015-04-29 | 2015-11-11 | 国家电网公司 | Black-start scheme evaluation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110401203A (en) * | 2019-07-30 | 2019-11-01 | 江苏舾普泰克自动化科技有限公司 | A kind of inverter peculiar to vessel based on reactive power compensation technology |
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