CN109861545A - Double active bridge DC converter direct Power Control methods based on energy closed loop - Google Patents
Double active bridge DC converter direct Power Control methods based on energy closed loop Download PDFInfo
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Abstract
The invention discloses double active bridge DC converter direct Power Control methods based on energy closed loop, are suitable for great power bidirectional DC converting field.The present invention is directed to two-way full-bridge direct current converter dynamic response problem, on the basis of single phase shifting control, according to output energy-balance equation, sampling and outputting voltage UoutIt is squared construction output capacitance energy closed loop, the size of angle of phase displacement is obtained by the direct Power Control based on double active bridge DC converter power transmission models, generates switch control signal, realizes the quick adjusting of double active bridge DC converter output voltages.This method can when effectively Lifting Transform device is to load sudden change output voltage dynamic responding speed, and only need sampling and outputting voltage, at low cost, easily designed and Project Realization insensitive to model parameter.
Description
Technical field
The invention belongs to two-way DC converter energy transmission technology fields in electrical engineering, and in particular to one kind is based on energy
Measure double active bridge DC converter direct Power Control methods of closed loop.
Background technique
Double active bridge (Dual Active Bridge, DAB) DC converters are as high power DC-DC converter
Alternative solution since being suggested, because its with electrical isolation, high power density, energy in bidirectional flow, buck/boost transformation with
And the advantages that being easy to modularization cascade, is widely used in electric car, distributed power generation, electric power electric transformer, locomotive electrical
The high pressures such as trailer system, high-power, bidirectional, dc energy conversion system.
DAB to adapt to operating condition complicated and changeable in above-mentioned industrial application, as direct-voltage power converter unit
Need to have excellent dynamic response performance, the dynamic response performance of output voltage especially under load sudden change.It is traditional based on
The output voltage closed loop list phase-shifting control method of pi regulator is difficult to meet relevant dynamic response performance requirement, therefore both at home and abroad
Numerous scholars expand extensive research for the promotion of DAB converter dynamic responding speed.
The method that DAB dynamic responding speed is promoted can generally be divided into three classes: the first kind is by introducing the anti-of electric current
Feedback or feedforward, accelerate current response rate, dynamic response performance are promoted, such as document " Segaran D, Holmes D, Holmes
G.Enhanced load step response for a bidirectional DCDC converter[J].IEEE
Transactions on Power Electronics, 2013,28 (1): 371-379. " (" bidirectional DC/DC converter loads rank
Jump fast response method " -2013 IEEE power electronics periodicals) and in propose pass through sampling load current, introduce load current
The method of feedforward accelerates the dynamic responding speed of DAB, but increases the sampling of load current, increases the cost of system；Second
Class is the small-signal model and time average equivalent model by establishing DAB power transmission, brings relevant parameter into and directly calculates shifting
Phase angle accelerates the dynamic responding speed of DAB so that controlling output power is rapidly achieved given value, as Chinese invention patent is " a kind of
Applied to full-bridge isolation DC-DC converter direct Power Control method " (publication number: CN105141136A) propose pass through electricity
Pressure outer ring PI closed loop obtains power given value, completes direct Power Control in conjunction with the power transmission model of DAB, accelerates the dynamic of DAB
State response performance, but using the output of outer voltage PI closed loop as power given value, physical significance is indefinite, is unfavorable for PI tune
Save the raising of dynamic property in the parameter designing and full power range of device；Third class is the controlling party for combining preceding two classes method
Method, as Chinese invention patent " improves the load-current feedforward control side of full-bridge isolation DC-DC converter output voltage dynamic response
Method " (publication number:
CN105048821B a kind of combination DAB power transmission model is proposed in), while introducing the side of load-current feedforward
Method improves the dynamic response performance of DAB, but equally because current sample increases system cost.
Above-mentioned analysis shows although existing method can effectively promote the dynamic responding speed of DAB to a certain extent,
There are respective shortcomings, it is therefore necessary to further to the raising of DAB dynamic property to be explored.
Summary of the invention
The present invention is directed to double active bridge DC converter dynamic response problems, in output voltage of the tradition based on pi regulator
A kind of direct Power Control method based on energy closed loop is proposed on the basis of closed loop list phase-shifting control method.This method according to
Energy-balance equation is exported, sampling output capacitance voltage is squared construction output capacitance energy closed loop, in conjunction with DAB power transmission mould
Type completes direct Power Control, realizes the quick adjusting of output voltage.This method can effectively Lifting Transform device to load sudden change when
The dynamic responding speed of output voltage, and sampling and outputting voltage is only needed, it is at low cost, it is insensitive to model parameter, it is easily designed
And Project Realization.
The object of the present invention is achieved like this.The present invention provides a kind of, and double active bridge direct currents based on energy closed loop become
Parallel operation direct Power Control method, wherein double active bridge DC converters involved in this control method include a DC power supply
Uin, an input capacitance Ci, a primary side H bridge, a phase shift inductance L, a high-frequency isolation transformer T, a secondary side H bridge,
One output capacitance CoWith a load resistance R；The primary side H bridge includes 4 switching tubes, is denoted as switching tube Si(i=1,2,
3,4), the secondary side H bridge includes 4 switching tubes, is denoted as switching tube Qi(i=1,2,3,4)；
The control method samples double active bridge DC converter output voltages, passes through energy closed loop and direct Power Control
The size of angle of phase displacement is obtained, switch control signal is generated, double active bridge DC converters is completed and quickly controls, specific steps are such as
Under:
Step 1, double active bridge DC converter output capacitance C are sampledoThe voltage at both ends, and be denoted as double active bridge direct currents and become
Parallel operation output voltage Uout；
Step 2, double active bridge DC converter output voltage reference value U are givenout_ref, by Uout_refAfter being squared with
Double active bridge DC converter output voltage U that step 1 obtainsoutSquare as difference obtain output energy error signal delta E, i.e.,Then using obtained output energy error signal delta E as the input of pi regulator, and PI tune is set
Section device the output violent change upper limit beThe output violent change lower limit of pi regulator isPi regulator output is double active bridges
The power given value P of DC converterref, complete energy closed-loop control；
The transmission function G of the pi regulatorPI(s) are as follows:
In formula, s is Laplace operator, kpFor the proportionality coefficient of pi regulator, kiFor the integral coefficient of pi regulator；
Step 3: the double active bridge DC converter output voltage U obtained according to step 1outIt is obtained with step 2 double active
The power given value P of bridge DC converterref, the angle of phase displacement D of double active bridge DC converters is calculated, completes Direct Power
Control, calculation formula are as follows:
Step 4: according to the angle of phase displacement D for double active bridge DC converters that step 3 obtains, by single phase shifting control.It generates
The switch control signal of double active bridge DC converters, and double active bridge DC converter power are controlled by Drive Protecting Circuit
Device turns on and off, to realize double active bridge DC converter direct Power Controls based on energy closed loop.
Compared with the prior art, the advantages of the present invention are as follows:
1, it only needs to sample output while being obviously improved the dynamic responding speed of load sudden change downconverter output voltage
Voltage, it is at low cost, it is easy to engineering popularization；
2, output capacitance energy input pi regulator is obtained into output power given value, explicit physical meaning, control system
Parameter is easy to set, realizes that dynamic response performance is promoted in full power range；
Detailed description of the invention
Fig. 1 is double active bridge DC converter direct Power Control methods in the embodiment of the present invention based on energy closed loop
System block diagram.
Fig. 2 is that in the embodiment of the present invention then load resistance is mutated again to when zero load from zero load mutation to fully loaded 32 ohm
The experimental waveform figure of double active bridge DC converter direct Power Control methods based on energy closed loop.
Specific embodiment
Preferred embodiment of the invention is described in further detail with reference to the accompanying drawing.
Fig. 1 is double active bridge DC converter direct Power Control methods in the embodiment of the present invention based on energy closed loop
System block diagram, double active bridge DC converters involved in this control method include a DC power supply U as seen from Figure 1in, one
Input capacitance Ci, a primary side H bridge, a phase shift inductance L, a high-frequency isolation transformer T, a secondary side H bridge, an output
Capacitor CoWith a load resistance R；The primary side H bridge includes 4 switching tubes, is denoted as switching tube Si(i=1,2,3,4), it is described
Secondary side H bridge include 4 switching tubes, be denoted as switching tube Qi(i=1,2,3,4).
The primary side H bridge switch pipe SiIn (i=1,2,3,4), switching tube S1With switching tube S3Series connection, switching tube S2With
Switching tube S4Connect and respectively constitute two bridge arms of primary side H bridge, the DC terminal in parallel as primary side H bridge between two bridge arms；It opens
Close pipe S1With switching tube S3Series connection point draw AC port a, a switching tube S as primary side H bridge2With switching tube S4String
Join ac output end mouth b of the tie point extraction as primary side H bridge.
The secondary side H bridge switch pipe QiIn (i=1,2,3,4), switching tube Q1With switching tube Q3Series connection, switching tube Q2With
Switching tube Q4Connect and respectively constitute two bridge arms of secondary side H bridge, the DC terminal in parallel as secondary side H bridge between two bridge arms；It opens
Close pipe Q1With switching tube Q3Series connection point draw an AC port c, switching tube Q as pair side H bridge2With switching tube Q4String
Join AC port d of the tie point extraction as secondary side H bridge.
The DC power supply UinWith input capacitance CiIt is in parallel with the DC terminal of primary side H bridge again after parallel connection, the friendship of primary side H bridge
Flow port a is connected to one end of phase shift inductance L, and the other end of phase shift inductance L is connected to the of the same name of high-frequency isolation transformer T primary side
Hold E*, high-frequency isolation transformer T primary side different name end G is connected to the AC port b of primary side H bridge；High-frequency isolation transformer T pair side is same
Name end e*It is connected to the AC port c of secondary side H bridge, the exchange of high-frequency isolation transformer T pair H bridge when different name end g is connected to secondary
Port d, load resistance R and output capacitance CoIt is connected to the DC terminal of secondary side H bridge after parallel connection, wherein high-frequency isolation transformer T
No-load voltage ratio is M, and M is positive number, and the current definition of phase shift inductance L is inductive current iL, inductance is flowed to from the AC port a of primary side H bridge
Direction is positive, and the current definition for flowing through load is load current io, the direction for flowing into load resistance is positive.
The design parameter of the embodiment of the present invention is as follows: DC power supply UinVoltage be 100V, input capacitance CiCapacitance
For 110uF, the inductance value of phase shift inductance L is 120uH, and the no-load voltage ratio M of high-frequency isolation transformer T is 1, output capacitance CoCapacitance is
The resistance value of 110uF, load resistance R are 32 Ω.
Control method of the present invention samples double active bridge DC converter output voltages, passes through energy closed loop and direct function
Rate controls to obtain the size of angle of phase displacement, generates switch control signal, completes double active bridge DC converters and quickly controls.By Fig. 1
Know that specific implementation step of the invention is as follows:
Step 1, double active bridge DC converter output capacitance C are sampledoThe voltage at both ends, and be denoted as double active bridge direct currents and become
Parallel operation output voltage Uout。
Step 2, double active bridge DC converter output voltage reference value U are givenout_ref, by Uout_refAfter being squared with
Double active bridge DC converter output voltage U that step 1 obtainsoutSquare as difference obtain output energy error signal delta E, i.e.,Then using obtained output energy error signal delta E as the input of pi regulator, and PI tune is set
Section device the output violent change upper limit beThe output violent change lower limit of pi regulator isPi regulator output is double active bridges
The power given value P of DC converterref, complete energy closed-loop control.
The pi regulator is proportional and integral controller, transmission function GPI(s) are as follows:
In formula, s is Laplace operator, kpFor the proportionality coefficient of pi regulator, kiFor the integral coefficient of pi regulator.
In the present embodiment, Uout_ref=100V, ki=0.02, kp=0.0003.
Specifically, energy closed-loop control is the specific implementation process is as follows shown: firstly becauseWherein E is defeated
Capacitor C outoThe energy stored, so we are by Uout_refThe double active bridge direct currents obtained after being squared with step 1 sampling become
Parallel operation output voltage UoutSquare as difference obtain output energy error signal delta E, i.e.,Again because of output
Energy time differential is output power, i.e.,So we using obtained output energy error signal delta E as
The input of pi regulator.
Step 3: the double active bridge DC converter output voltage U obtained according to step 1outIt is obtained with step 2 double active
The power given value P of bridge DC converterref, the angle of phase displacement D of double active bridge DC converters is calculated, completes Direct Power
Control, calculation formula are as follows:
Wherein, the formula proving of direct Power Control is as follows:
Because of the expression formula of the output power P of double active bridge DC converters are as follows:
In formula, f is the switching frequency of double active bridge DC converter power switch devices, and f is 20KHz in the present embodiment.
In view of switching frequency f, phase shift inductance L, the no-load voltage ratio M of high-frequency isolation transformer T are basicly stable constant, and put aside direct current
Source UinMutation, therefore we are further simplified are as follows:
Therefore, direct Power Control calculates the calculation formula of the angle of phase displacement D of double active bridge DC converters are as follows:
Step 4: according to the angle of phase displacement D for double active bridge DC converters that step 3 obtains, by single phase shifting control.It generates
The switch control signal of double active bridge DC converters, and double active bridge DC converter power are controlled by Drive Protecting Circuit
Device turns on and off, to realize double active bridge DC converter direct Power Controls based on energy closed loop.
Fig. 2 is the load resistance tested in actual experiment platform of the design parameter of embodiment according to the present invention from sky
Mutation is carried to DC power supply U when being fully loaded with 32 ohm and then being mutated zero load againin, output voltage Uout, load current ioWith inductance electricity
Flow iLExperimental waveform, as seen from Figure 2 load be mutated in full power range during output voltage UoutAlmost without
Variation, the results show feasibility of the invention.
Claims (1)
1. double active bridge DC converter direct Power Control methods based on energy closed loop, wherein involved in this control method
Double active bridge DC converters include a DC power supply Uin, an input capacitance Ci, a primary side H bridge, a phase shift inductance
L, a high-frequency isolation transformer T, secondary side H bridge, an output capacitance CoWith a load resistance R；The primary side H bridge
Including 4 switching tubes, it is denoted as switching tube Si(i=1,2,3,4), the secondary side H bridge include 4 switching tubes, are denoted as switching tube Qi
(i=1,2,3,4)；
It is characterized in that, the control method samples double active bridge DC converter output voltages, by energy closed loop and directly
Power control obtains the size of angle of phase displacement, generates switch control signal, completes double active bridge DC converters and quickly controls, specifically
Steps are as follows:
Step 1, double active bridge DC converter output capacitance C are sampledoThe voltage at both ends, and it is denoted as double active bridge DC converters
Output voltage Uout；
Step 2, double active bridge DC converter output voltage reference value U are givenout_ref, by Uout_refAfter being squared with step 1
Obtained double active bridge DC converter output voltage UoutSquare as difference obtain output energy error signal delta E, i.e.,Then using obtained output energy error signal delta E as the input of pi regulator, and PI tune is set
Section device the output violent change upper limit beThe output violent change lower limit of pi regulator isPi regulator output is double active bridges
The power given value P of DC converterref, complete energy closed-loop control；
The transmission function G of the pi regulatorPI(s) are as follows:
In formula, s is Laplace operator, kpFor the proportionality coefficient of pi regulator, kiFor the integral coefficient of pi regulator；
Step 3: the double active bridge DC converter output voltage U obtained according to step 1outThe double active bridges obtained with step 2 are straight
The power given value P of current converterref, the angle of phase displacement D of double active bridge DC converters is calculated, completes direct Power Control,
Its calculation formula is as follows:
Step 4: according to the angle of phase displacement D for double active bridge DC converters that step 3 obtains, being generated by single phase shifting control double active
The switch control signal of bridge DC converter, and double active bridge DC converter power devices are controlled by Drive Protecting Circuit
It turns on and off, to realize double active bridge DC converter direct Power Controls based on energy closed loop.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394984A (en) * | 2021-07-02 | 2021-09-14 | 山东大学 | Full-working-condition current stress optimization control method for hybrid three-level DAB converter |
| CN113809928A (en) * | 2021-09-16 | 2021-12-17 | 西安交通大学 | DAB converter power control method, medium and equipment based on power feedforward |
| CN113904562A (en) * | 2021-12-09 | 2022-01-07 | 深圳市永联科技股份有限公司 | Closed-loop control method and device for isolated bidirectional converter and electronic equipment |
| CN114362537A (en) * | 2021-12-09 | 2022-04-15 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | DAB converter dual optimization control strategy based on DPC-SDC |
| CN115800766A (en) * | 2023-01-30 | 2023-03-14 | 广东电网有限责任公司肇庆供电局 | Model reference self-adaptive control method and device based on double-active-bridge converter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006971A (en) * | 2015-06-16 | 2015-10-28 | 北京亿利智慧能源科技有限公司 | Control method for improving light-load efficiency of DAB-type DC-DC converter |
| US9257864B2 (en) * | 2012-03-21 | 2016-02-09 | Cistel Technology Inc. | Input power controller for AC/DC battery charging |
| CN107425730A (en) * | 2017-08-03 | 2017-12-01 | 国网江苏省电力公司南京供电公司 | A kind of soft-switching process of the DAB based on current efficiency optimization |
| CN108039820A (en) * | 2017-12-05 | 2018-05-15 | 西南交通大学 | A kind of model prediction list Method of Phase-Shift Controlling for being used for double active full-bridge DC-DC converters |
| CN108039821A (en) * | 2017-12-05 | 2018-05-15 | 西南交通大学 | A kind of current stress optimization double Method of Phase-Shift Controlling of double active full-bridge DC-DC converters |
| CN108400713A (en) * | 2018-03-15 | 2018-08-14 | 西南交通大学 | The optimization power balancing method of DC-DC converter in power electronics tractive transformer |
| CN108631595A (en) * | 2018-03-05 | 2018-10-09 | 上海交通大学 | The linearization method of controlling of the DAB converters of single phase shift modulation |
-
2019
- 2019-02-19 CN CN201910124172.2A patent/CN109861545B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9257864B2 (en) * | 2012-03-21 | 2016-02-09 | Cistel Technology Inc. | Input power controller for AC/DC battery charging |
| CN105006971A (en) * | 2015-06-16 | 2015-10-28 | 北京亿利智慧能源科技有限公司 | Control method for improving light-load efficiency of DAB-type DC-DC converter |
| CN107425730A (en) * | 2017-08-03 | 2017-12-01 | 国网江苏省电力公司南京供电公司 | A kind of soft-switching process of the DAB based on current efficiency optimization |
| CN108039820A (en) * | 2017-12-05 | 2018-05-15 | 西南交通大学 | A kind of model prediction list Method of Phase-Shift Controlling for being used for double active full-bridge DC-DC converters |
| CN108039821A (en) * | 2017-12-05 | 2018-05-15 | 西南交通大学 | A kind of current stress optimization double Method of Phase-Shift Controlling of double active full-bridge DC-DC converters |
| CN108631595A (en) * | 2018-03-05 | 2018-10-09 | 上海交通大学 | The linearization method of controlling of the DAB converters of single phase shift modulation |
| CN108400713A (en) * | 2018-03-15 | 2018-08-14 | 西南交通大学 | The optimization power balancing method of DC-DC converter in power electronics tractive transformer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394984A (en) * | 2021-07-02 | 2021-09-14 | 山东大学 | Full-working-condition current stress optimization control method for hybrid three-level DAB converter |
| CN113394984B (en) * | 2021-07-02 | 2022-03-22 | 山东大学 | Full-working-condition current stress optimization control method for hybrid three-level DAB converter |
| CN113809928A (en) * | 2021-09-16 | 2021-12-17 | 西安交通大学 | DAB converter power control method, medium and equipment based on power feedforward |
| CN113809928B (en) * | 2021-09-16 | 2024-03-22 | 西安交通大学 | DAB converter power control method, medium and device based on power feedforward |
| CN113904562A (en) * | 2021-12-09 | 2022-01-07 | 深圳市永联科技股份有限公司 | Closed-loop control method and device for isolated bidirectional converter and electronic equipment |
| CN113904562B (en) * | 2021-12-09 | 2022-02-11 | 深圳市永联科技股份有限公司 | Closed-loop control method and device for isolated bidirectional converter and electronic equipment |
| CN114362537A (en) * | 2021-12-09 | 2022-04-15 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | DAB converter dual optimization control strategy based on DPC-SDC |
| CN114362537B (en) * | 2021-12-09 | 2024-05-28 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | DAB converter dual optimization control strategy based on DPC-SDC |
| CN115800766A (en) * | 2023-01-30 | 2023-03-14 | 广东电网有限责任公司肇庆供电局 | Model reference self-adaptive control method and device based on double-active-bridge converter |
| CN115800766B (en) * | 2023-01-30 | 2023-05-05 | 广东电网有限责任公司肇庆供电局 | Model reference self-adaptive control method and device based on double active bridge converters |
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