CN110138214A - Eliminate the modularization DC-DC converter control unit of circuit certainly based on distributed ripple - Google Patents
Eliminate the modularization DC-DC converter control unit of circuit certainly based on distributed ripple Download PDFInfo
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- CN110138214A CN110138214A CN201910380582.3A CN201910380582A CN110138214A CN 110138214 A CN110138214 A CN 110138214A CN 201910380582 A CN201910380582 A CN 201910380582A CN 110138214 A CN110138214 A CN 110138214A
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of modularization DC-DC converter control units for eliminating circuit certainly based on distributed ripple, that eliminates the synchronization optical fiber cables that conventional parallel DC-DC converter interleaving technique uses, save the cost, reduce output voltage ripple simultaneously, to reduce input filter and output capacitance size, and improve capacitor service life.In the plug and play scene of DC-DC converter, it is different from traditional centralized DC-DC converter, due to the presence of feedback element, distribution ripple of the invention is not determined from the phase shifting angle for eliminating circuit by the DC-DC converter number of system, therefore has significant advantage compared with centralized DC-DC converter.
Description
Technical field
The invention belongs to power electronics fields, and in particular to a kind of module for eliminating circuit certainly based on distributed ripple
Change DC-DC converter control unit.
Background technique
In industrial practical application, it is contemplated that the objective factors such as power grade, system maintenance, reliability, usually using more
The identical modularization DC-DC converter of platform parameter, manufacturing process is in parallel respectively in its input, output port.Modular thought
In the existing many researchs of many subdomains of field of power electronics, in photovoltaic system field, by Miniature inverter and photovoltaic panel
It is integrated into Miniature inverter module, is easily installed and safeguards；Further, photovoltaic optimization is equipped with for each Miniature inverter module
Device should if the Chinese patent of Publication No. CN104065336A proposes a kind of photovoltaic optimizer of integrated data communication function
Photovoltaic optimizer uses the DC/DC converter of power/data double modulation policy control, can not change conventional photovoltaic optimizer function
Under the premise of rate circuit topology, by being superimposed communication signal carrier in conventional power governing loop, injection photovoltaic is modulated data onto
System dc bus improves the efficiency of system operation.In battery management system field, Publication No. CN109037801A's
Chinese patent propose it is a kind of be integrated with the lithium battery management system of information collection, data communication, electric energy equalization function, realize
The modularization of single battery controller.Modular equipment is not only convenient for integrating, and reduces production cost, is also conducive to maintenance and inspection
It repairs, improves the ability of system reply failure.
Interleaving technique is commonly applied in such parallel connection converter, for reducing output voltage ripple, to reduce input
Filter and output capacitance size simultaneously improve capacitor service life.Using the N platform converter of interleaving technique, have consistent
Switching frequency, the phase shift between each converter are set as 2 π/N, and what system was total at this time outputs and inputs current ripples minimum, output electricity
Holding ripple is ideally 0.
DC-DC converter is generally divided into non-isolation type and isolated form two major classes, and the representative topology of non-isolation type converter is such as
Inverse excitation type converter, forward converter etc., isolated converter representative topology such as Buck converter and Boost.
By taking Buck converter as an example, structure is as shown in Fig. 2, switching tube Q1With Q2Complementary duty, L are outputting inductance, CoutFor output electricity
Hold, the double -loop control or output voltage list of output voltage outer ring output current inner loop can be used in the control method of Buck converter
Ring control.
Modularization DC-DC converter is classified according to its control method, can be further divided into centralized DC-DC converter
With distributed DC-DC converter.N platform distribution DC-DC converter generally only has a master controller and N-1 from controller,
The working sequence of system by main controller controls, master controller with from relying on fiber optic cable realizations synchronous between controller and interlock
Parallel connection, higher cost；N platform centralization DC-DC converter only has a master controller, and the timing of all converters is by master control
Device control there are fault-resistant ability is poor, the disadvantages of poor expandability, is not suitable for DC-DC since control circuit is only a set of yet
The plug and play occasion of converter.
Summary of the invention
In view of above-mentioned, the present invention provides a kind of based on distributed ripple from the modularization DC-DC converter for eliminating circuit
Control unit, eliminates the synchronization optical fiber cable that conventional parallel DC-DC converter interleaving technique uses, save the cost, together
When reduce output voltage ripple, to reduce input filter and output capacitance size, and improve capacitor service life.
A kind of modularization DC-DC converter control unit for eliminating circuit certainly based on distributed ripple, including distributed line
Wave eliminates circuit, power ring signal sampling and conditioning circuit, duty ratio digitial controller and power driving circuit certainly；Described point
Cloth ripple eliminates circuit certainly
Power coupling circuit, for incuding the output voltage ripple of this DC-DC conversion module itself by magnetic coupling；
Signal sampling and conditioning circuit, for acquiring the output voltage ripple and DC-DC of this DC-DC conversion module itself
Total output voltage ripple of converter, to obtain the instantaneous difference of total output voltage ripple Yu module itself output voltage ripple
Signal；The DC-DC converter is composed in parallel by multiple DC-DC conversion modules；
Phase detecting circuit, for detecting the phase information of the instantaneous difference signal comprising sinusoidal component and cosine
Component；
Digit phase controller calculates the phase shift for generating this DC-DC conversion module driving signal according to the phase information
Angle；
The power ring signal sampling and conditioning circuit are used to acquire the output voltage and output electricity of this DC-DC conversion module
It flows and carries out conditioning shaping；
The duty ratio digitial controller exports electric current loop as inner ring, according to conditioning using output-voltage loop as outer ring
Output voltage and output electric current after shaping, generate this DC-DC conversion module by PI (proportional, integral) Compensation Control and drive
The duty ratio of dynamic signal；
The power driving circuit generates corresponding pwm signal according to phase shifting angle and duty ratio to drive this DC-DC to convert mould
Device for power switching in block.
Further, the power coupling circuit is composed in parallel by inductance l and capacitor c, and the inductance l and this DC-DC become
The outputting inductance coupling in block is changed the mold, the voltage at the both ends capacitor c is the output voltage ripple of this DC-DC conversion module itself,
The inductance value L of inductance lxWith the capacitance C of capacitor cxMeet following relationship；
Wherein: L is the inductance value of outputting inductance in this DC-DC conversion module, CoutTo be exported in this DC-DC conversion module
The capacitance of capacitor.
Further, the signal sampling and conditioning circuit include the identical signal sampling conditioning module A, B of three structures,
C and capacitor C and resistance R, the input of signal sampling conditioning module A flank the output voltage line of this DC-DC conversion module itself
Wave, the input of signal sampling conditioning module B flank total output voltage ripple of DC-DC converter, signal sampling conditioning module A and
The output end of B is connected with the difference negative input end of signal sampling conditioning module C and difference positive input terminal respectively, signal sampling conditioning
The output end of module C is connected with one end of capacitor C, and the other end of capacitor C is connected with one end of resistance R and exports instantaneous difference letter
Number, another termination 0.5V of resistance Rref, VrefFor reference voltage.
Further, signal sampling conditioning module A, B or C include five resistance R1~R5, two capacitor C1~C2With
One operational amplifier, in which: resistance R1One end be signal sampling conditioning module difference positive input terminal, resistance R1It is another
End and resistance R2One end, capacitor C1One end, resistance R3One end and operational amplifier non-inverting input terminal be connected, resistance
R2The other end and capacitor C1The other end be connected and be grounded, resistance R3Another termination Vref, resistance R4One end adopted for signal
The difference negative input end of sample conditioning module, resistance R4The other end and resistance R5One end, capacitor C2One end and operation amplifier
The inverting input terminal of device is connected, resistance R5The other end and capacitor C2The other end and operational amplifier output end be connected simultaneously
Output end as signal sampling conditioning module.
Further, the phase detecting circuit includes the identical two-way branch of structure, exports instantaneous difference signal respectively
Sinusoidal phase component and cosine phase component, every road branch is by voltage follower, analog switching circuit and low-pass filter
It is sequentially connected composition, the voltage follower selects operational amplifier to impedance transformation, the non-inverting input terminal of operational amplifier
Connect the of instantaneous difference signal, the inverting input terminal of operational amplifier and the output end of operational amplifier and analog switching circuit
One input terminal is connected, and the second input terminal of analog switching circuit receives square-wave signal, the output end and low pass of analog switching circuit
The input terminal of filter is connected, the sinusoidal phase component or cosine phase point of the instantaneous difference signal of the output end of low-pass filter
Amount.
Further, for exporting the branch of cosine phase component, the wherein received square-wave signal S of analog switching circuit1
And output signal A1Expression formula it is as follows:
For exporting the branch of sinusoidal phase component, the wherein received square-wave signal S of analog switching circuit2And output letter
Number A2Expression formula it is as follows:
Wherein: m is the overtone order of square-wave signal, fsFor the switching frequency of DC-DC converter, a1For instantaneous difference signal
Peak value, θ1For the phase difference of itself output voltage ripple of instantaneous difference signal Yu this DC-DC conversion module, t is the moment.
Further, the digit phase controller passes through the sinusoidal phase component and cosine phase to instantaneous difference signal
Component carries out sampling and analog-to-digital conversion, and then is controlled using Bang-Bang control algolithm or fuzzy (proportional-integral-differential)
Algorithm calculates the phase shifting angle for generating this DC-DC conversion module driving signal.
Based on the above-mentioned technical proposal, the present invention has following advantageous effects:
(1) present invention eliminates the synchronization optical fiber cable that traditional DC-DC converter interleaving technique in parallel uses, sections
About cost.
(2) present invention can reduce output DC voltage ripple, improve power quality.
(3) present invention can reduce input filter and output capacitance size, and improve capacitor service life.
(4) due to its adaptivity, the present invention be can be applied in DC-DC converter plug and play scene.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of modularization DC-DC converter control unit of the present invention.
Fig. 2 is the structural schematic diagram of Buck type DC-DC converter.
Fig. 3 is the structural schematic diagram of signal sampling and conditioning circuit.
Fig. 4 is the concrete structure schematic diagram of signal sampling conditioning module.
Fig. 5 is the structural schematic diagram of phase detecting circuit.
Fig. 6 is the waveform diagram of each signal during power signal complex modulated.
Specific embodiment
In order to more specifically describe the present invention, with reference to the accompanying drawing from specific embodiment to technical solution of the present invention
It is described in detail.
As shown in Figure 1, the present invention is based on the modularization DC-DC converter control unit that distributed ripple eliminates circuit certainly,
It is driven including distributed ripple from circuit, power ring signal sampling and conditioning circuit, duty ratio digitial controller and power is eliminated
Dynamic circuit；Distributed ripple from eliminate circuit include: power coupling circuit, for incude this DC-DC convertor module itself
Output voltage ripple；Phase signal sampling and conditioning circuit, for acquire this DC-DC converter itself output voltage ripple and
Total output voltage ripple of DC-DC converter in parallel, and obtain the instantaneous of total output voltage ripple and itself output voltage ripple
Difference；Phase detecting circuit, for detecting the phase information of instantaneous difference；Digit phase controller, calculates according to phase information
Generate the phase shifting angle of itself DC-DC converter driving signal.
The separate unit DC-DC converter topology used in the present embodiment is Buck type DC-DC converter, as shown in Fig. 2, power
The coupling inductance L of coupling circuitxThere are coupled relations with the power inductance L of Buck type DC-DC converter, by circuit theory and public affairs
Formula (1), (2), (3) and (4), enables uCxAnd uCoutIt is equal, then it can release formula (5).Therefore, coupling inductance L is designedxWith capacitor Cx,
Power inductance L and capacitor CoutNumerical value, so that its product is met formula (5), pass through acquisition power coupling circuit capacitor CxOn
Voltage can obtain the instantaneous value of this DC-DC converter itself output capacitance ripple.
Wherein: NLAnd NLxRespectively power inductance L and coupling inductance LxThe number of turns.
The phase detection signal sampling used in present embodiment is with the structure of conditioning circuit as shown in figure 3, wherein module
The particular circuit configurations of A, B, C are as shown in Figure 4.The instantaneous value of this DC-DC converter itself output capacitance ripple becomes after A
Signal vself1, the instantaneous value of total output capacitance ripple becomes signal v after Btotal1, former according to amplifier " empty short ", " void is disconnected "
Reason, only considers small signal, has:
The value of resistance, capacitor is taken to meet formula:
R1=R4=R5=R, R2=R3=2R, C1=C2=C (7)
It can be obtained with abbreviation:
It can similarly obtain, vtotal1Expression formula are as follows:
vtotal1And vself1By module C, become:
vother1=vtotal1-vself1 (10)
Phase detecting circuit specific structure in the present embodiment by 2 voltage follower circuits, 2 simulations as shown in figure 5, opened
Powered-down road and 2 active low-pass filters are constituted.The analog switching circuit chip model used in the present embodiment for
TSSA23159。
Signal vother1It is divided into two-way, wherein numerical value remains unchanged after voltage follower 1 all the way, inputs analog switch
The input terminal of circuit 1:
vother1=a1sin(2πfst+θ1) (11)
Wherein: fsFor the switching frequency of system, a1For the peak value of total output ripple and itself output ripple difference, θ1For
vother1With the phase difference of itself output ripple, θ1∈ (- π, π].The control terminal input of analog switching circuit 1 is a square wave S1, by
Digitial controller issues, frequency fs, it is set as π with the phase difference of itself output ripple, being carried out Fourier decomposition can obtain:
By orthogonality of trigonometric function, the output waveform A of analog switching circuit 11Function expression are as follows:
Output waveform B after low-pass filter 11Function expression are as follows:
Signal vother1Another way after voltage follower 2 numerical value remain unchanged, input analog switching circuit 2 it is defeated
Enter end, the control terminal input of analog switching circuit 2 is a square wave S2, issued by digitial controller, frequency fs, exported with itself
The phase difference of ripple is set as-π.
By orthogonality of trigonometric function, the output waveform A of analog switching circuit 22Function expression are as follows:
Output waveform B after low-pass filter 22Function expression are as follows:
Output signal B1And B2It inputs in digit phase controller, the sampled signal processing module of digit phase controller is right
The sine of instantaneous difference carries out sampling and analog-to-digital conversion with cosine component equiphase information.Phase compensation computing module is according to conversion
As a result it is calculated using Compensation Control, generates the phase shifting angle of itself DC-DC converter driving signal.
The compensation tache used in the present embodiment is proportional, integral link, when the feedback condition of feedback element is set as B1=B2
When, it is easy to get: θ1=π.This shows: when system reaches stable state and meets feedback condition, the conjunction of other N-1 platform DC-DC converters
Phase difference at the phase Yu this TV station DC-DC converter of ripple itself output ripple is π；When the N platform converter distribution in system
When formula ripple all works in such state from elimination circuit, it is also achieved that the minimum of total output ripple amplitude.
Circuit in order to better illustrate the present invention, Fig. 6 is illustrated to be reached in a system by 3 DC-DC converter parallel connections
When to stable state, the signal waveform of each key node, it can be seen that the phase difference of 3 DC-DC converter driving signals is equal at this time
For 2/3 π.
The above-mentioned description to embodiment is for that can understand and apply the invention convenient for those skilled in the art.
Person skilled in the art obviously can easily to above-described embodiment, various modification can be adapted, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, the improvement made for the present invention and modification all should be in protection scope of the present invention
Within.
Claims (7)
1. a kind of modularization DC-DC converter control unit for eliminating circuit certainly based on distributed ripple, it is characterised in that: including
Distributed ripple is electric from circuit, power ring signal sampling and conditioning circuit, duty ratio digitial controller and power drive is eliminated
Road；The distribution ripple eliminates circuit certainly
Power coupling circuit, for incuding the output voltage ripple of this DC-DC conversion module itself by magnetic coupling；
Signal sampling and conditioning circuit, for acquiring output voltage ripple and the DC-DC transformation of this DC-DC conversion module itself
Total output voltage ripple of device, so that the instantaneous difference for obtaining total output voltage ripple and module itself output voltage ripple is believed
Number；The DC-DC converter is composed in parallel by multiple DC-DC conversion modules；
Phase detecting circuit, for detecting the phase information of the instantaneous difference signal comprising sinusoidal component and cosine component；
Digit phase controller calculates the phase shifting angle for generating this DC-DC conversion module driving signal according to the phase information；
The output voltage and output electric current that the power ring signal sampling and conditioning circuit are used to acquire this DC-DC conversion module are simultaneously
Carry out conditioning shaping；
The duty ratio digitial controller is using output-voltage loop as outer ring, and output electric current loop is as inner ring, according to conditioning shaping
Output voltage and output electric current afterwards, the duty ratio of this DC-DC conversion module driving signal is generated by PI Compensation Control；
The power driving circuit generates corresponding pwm signal according to phase shifting angle and duty ratio to drive in this DC-DC conversion module
Device for power switching.
2. modularization DC-DC converter control unit according to claim 1, it is characterised in that: the power coupling electricity
Routing inductance l and capacitor c is composed in parallel, and the inductance l is coupled with the outputting inductance in this DC-DC conversion module, the both ends capacitor c
Voltage be this DC-DC conversion module itself output voltage ripple, the inductance value L of inductance lxWith the capacitance C of capacitor cxMeet
Following relationship；
Wherein: L is the inductance value of outputting inductance in this DC-DC conversion module, CoutFor output capacitance in this DC-DC conversion module
Capacitance.
3. modularization DC-DC converter control unit according to claim 1, it is characterised in that: the signal sampling with
Conditioning circuit includes three structures identical signal sampling conditioning module A, B, C and capacitor C and resistance R, signal sampling conditioning
The input of modules A flanks the output voltage ripple of this DC-DC conversion module itself, and the input of signal sampling conditioning module B flanks
Total output voltage ripple of DC-DC converter, the output end of signal sampling conditioning module A and B improve mould with signal sampling respectively
The difference negative input end of block C is connected with difference positive input terminal, one end phase of the output end and capacitor C of signal sampling conditioning module C
Even, the other end of capacitor C is connected with one end of resistance R and exports instantaneous difference signal, another termination 0.5V of resistance Rref, Vref
For reference voltage.
4. modularization DC-DC converter control unit according to claim 3, it is characterised in that: the signal sampling tune
Managing modules A, B or C includes five resistance R1~R5, two capacitor C1~C2With an operational amplifier, in which: resistance R1One end
For the difference positive input terminal of signal sampling conditioning module, resistance R1The other end and resistance R2One end, capacitor C1One end, electricity
Hinder R3One end and operational amplifier non-inverting input terminal be connected, resistance R2The other end and capacitor C1The other end be connected simultaneously
Ground connection, resistance R3Another termination Vref, resistance R4One end be signal sampling conditioning module difference negative input end, resistance R4's
The other end and resistance R5One end, capacitor C2One end and operational amplifier inverting input terminal be connected, resistance R5The other end
With capacitor C2The other end and operational amplifier output end be connected and the output end as signal sampling conditioning module.
5. modularization DC-DC converter control unit according to claim 1, it is characterised in that: the phase-detection electricity
Road includes the identical two-way branch of structure, exports the sinusoidal phase component and cosine phase component of instantaneous difference signal respectively, often
Road branch is sequentially connected by voltage follower, analog switching circuit and low-pass filter and is formed, and the voltage follower is selected
Operational amplifier terminates instantaneous difference signal, the reverse phase of operational amplifier to impedance transformation, the homophase input of operational amplifier
Input terminal is connected with the first input end of the output end of operational amplifier and analog switching circuit, and the second of analog switching circuit
Input terminal receives square-wave signal, and the output end of analog switching circuit is connected with the input terminal of low-pass filter, low-pass filter
The sinusoidal phase component or cosine phase component of the instantaneous difference signal of output end.
6. modularization DC-DC converter control unit according to claim 5, it is characterised in that: for exporting cosine phase
The branch of position component, the wherein received square-wave signal S of analog switching circuit1And output signal A1Expression formula it is as follows:
For exporting the branch of sinusoidal phase component, the wherein received square-wave signal S of analog switching circuit2And output signal A2
Expression formula it is as follows:
Wherein: m is the overtone order of square-wave signal, fsFor the switching frequency of DC-DC converter, a1For the peak of instantaneous difference signal
Value, θ1For the phase difference of itself output voltage ripple of instantaneous difference signal Yu this DC-DC conversion module, t is the moment.
7. modularization DC-DC converter control unit according to claim 1, it is characterised in that: the digit phase control
Device processed carries out sampling and analog-to-digital conversion by sinusoidal phase component to instantaneous difference signal and cosine phase component, and then uses
Bang-Bang control algolithm or Fuzzy PID calculate the phase shifting angle for generating this DC-DC conversion module driving signal.
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| CN110518588A (en) * | 2019-09-16 | 2019-11-29 | 珠海格力电器股份有限公司 | Filtering method, device, equipment and power electronic device |
| CN110690821A (en) * | 2019-10-15 | 2020-01-14 | 东南大学 | Control system and control method for phase shift calculation of buck-boost resonant converter |
| CN111509984A (en) * | 2020-04-27 | 2020-08-07 | 成都国佳电气工程有限公司 | Secondary ripple suppression method for single-phase PET (polyethylene terephthalate) post-stage DC-DC converter |
| CN115360892A (en) * | 2022-09-28 | 2022-11-18 | 广东工业大学 | Low ripple control method applied to DC-DC converter |
| CN116073643A (en) * | 2023-02-02 | 2023-05-05 | 中山大学 | Method for controlling interleaving of parallel DC-DC converters in decentralization mode |
| CN117614256A (en) * | 2024-01-24 | 2024-02-27 | 西北工业大学 | Input current ripple optimization method after floating interleaved converter faults |
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| CN110518588A (en) * | 2019-09-16 | 2019-11-29 | 珠海格力电器股份有限公司 | Filtering method, device, equipment and power electronic device |
| CN110518588B (en) * | 2019-09-16 | 2021-10-12 | 珠海格力电器股份有限公司 | Filtering method, device, equipment and power electronic device |
| CN110690821A (en) * | 2019-10-15 | 2020-01-14 | 东南大学 | Control system and control method for phase shift calculation of buck-boost resonant converter |
| CN111509984A (en) * | 2020-04-27 | 2020-08-07 | 成都国佳电气工程有限公司 | Secondary ripple suppression method for single-phase PET (polyethylene terephthalate) post-stage DC-DC converter |
| CN111509984B (en) * | 2020-04-27 | 2021-02-26 | 成都国佳电气工程有限公司 | Secondary ripple suppression method for single-phase PET (polyethylene terephthalate) post-stage DC-DC converter |
| CN115360892A (en) * | 2022-09-28 | 2022-11-18 | 广东工业大学 | Low ripple control method applied to DC-DC converter |
| CN115360892B (en) * | 2022-09-28 | 2023-03-28 | 广东工业大学 | Low ripple control method applied to DC-DC converter |
| CN116073643A (en) * | 2023-02-02 | 2023-05-05 | 中山大学 | Method for controlling interleaving of parallel DC-DC converters in decentralization mode |
| CN116073643B (en) * | 2023-02-02 | 2023-10-10 | 中山大学 | Method for controlling interleaving of parallel DC-DC converters in decentralization mode |
| CN117614256A (en) * | 2024-01-24 | 2024-02-27 | 西北工业大学 | Input current ripple optimization method after floating interleaved converter faults |
| CN117614256B (en) * | 2024-01-24 | 2024-03-22 | 西北工业大学 | Input current ripple optimization method after floating interleaved converter faults |
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