CN109462335A - Crisscross parallel Buck power control circuit and its control method - Google Patents
Crisscross parallel Buck power control circuit and its control method Download PDFInfo
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- CN109462335A CN109462335A CN201811561199.XA CN201811561199A CN109462335A CN 109462335 A CN109462335 A CN 109462335A CN 201811561199 A CN201811561199 A CN 201811561199A CN 109462335 A CN109462335 A CN 109462335A
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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
- 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
- H02M3/1584—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 with a plurality of power processing stages connected in parallel
-
- 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
- H02M3/1584—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 with a plurality of power processing stages connected in parallel
- H02M3/1586—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 with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of crisscross parallel Buck power control circuit and its control methods, it include: two-way parallel connection DC/DC translation circuit, digital power controller DSP, driving isolating amplifier circuit, the two-way parallel connection DC/DC translation circuit is connected with power supply E, resistance R respectively, the digital power controller DSP sends the driving signal of 180 ° of two-way phase phase difference, for controlling two-way parallel connection DC/DC translation circuit after driving isolating amplifier circuit.The present invention only needs to adjust the value of the period register inside DSP, and without using Phaseshift controlling register, algorithm is simpler.Its algorithm is simple and effective, it is possible to reduce inside DSP in conversion process the algorithm times of 180 ° of simultaneous phase shifting operations and error probability, it is possible to reduce code length improves efficiency of algorithm and reliability.
Description
Technical field
The present invention relates to crisscross parallel Buck power control circuit and its control methods, belong to converter frequency conversion phase shift technology
Field.
Background technique
Currently, mostly using the phase shift register inside DSP to control in traditional two-way power module Parallel Control algorithm
Phase adjustment algorithms when needing Parallel Control if there is two-way power supply, need to be related to phase shifting control in parallel, phase shifting control
Advantage in parallel is the volume that can reduce current ripples and reduce filter.
In digital power using DSP control, existing phase shifting control algorithm is used substantially based on the phase provided inside DSP
Register is moved to be operated, this method needs to go needed for calculating 180 ° of angles of phase shift according to periodic quantity under paralleling model
Then phase shift value is reloaded into phase shift register, this method calculating is more complicated, and operation will not only reload every time
The value of period register, it is also necessary to the value for phase shift register of reloading.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of crisscross parallel Buck power supply control
Circuit and its control method.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of crisscross parallel Buck power control circuit, comprising: two-way parallel connection DC/DC translation circuit, digital power controller
DSP, driving isolating amplifier circuit, the two-way parallel connection DC/DC translation circuit are connected with power supply E, resistance R respectively, the number
Word power-supply controller of electric DSP sends the driving signal of 180 ° of two-way phase phase difference, for controlling two after driving isolating amplifier circuit
Road parallel connection DC/DC translation circuit.
Preferably, the two-way parallel connection DC/DC translation circuit includes: the first metal-oxide-semiconductor S1, the second metal-oxide-semiconductor S2, the
One diode D1, the second diode D2, first capacitor C1, filter capacitor Co, the first inductance LA, the second inductance LB；First metal-oxide-semiconductor S1
The pole S be connected to first diode D1K grade；First metal-oxide-semiconductor S1D grade connect first capacitor C1One end, one with power supply E
End is connected；Second metal-oxide-semiconductor S2S grade connect the second diode D2K grade, the second metal-oxide-semiconductor S2D grade connect capacitor C1One end,
It is connected with one end of power supply E, capacitor C1The other end and first diode D1, the second diode D2A grade be connected after with power supply
The other end of E is connected；First inductance LAOne end and the first metal-oxide-semiconductor S1S be extremely connected, the other end and output filter capacitor CoPhase
Even；Second inductance LBOne end and the second metal-oxide-semiconductor S1S be extremely connected, the other end and output filter capacitor CoIt is connected, filter capacitor
CoThe other end and the second diode D2A grade be connected, resistance R and filter capacitor CoIt is in parallel.
Preferably, the driving isolating amplifier circuit output end G1 and the first metal-oxide-semiconductor S1The pole G be extremely connected with S
It connects, output end G2 and the second metal-oxide-semiconductor S2The pole G be connected with the pole S.
Preferably, metal-oxide-semiconductor can use IGBT, silicon-controlled substitution.
A kind of control method of crisscross parallel Buck power control circuit, includes the following steps:
Step 1: the triangular carrier V of two same phases is automatically generated inside digital power processor DSPr1With triangular carrier Vr2；
Step 2: for the dutyfactor value that first via driving signal PWM1 is used for CMP1=d*PRD, d is that the needs that DSP is calculated are defeated
Dutyfactor value out, PRD are the metal-oxide-semiconductor switch periods value of setting, and the duty ratio CMP1 value of PWM1 is carried out in period zero-acrross ing moment
It loads；
Step 3: the dutyfactor value that the second tunnel driving signal PWM2 is used is CMP2=(1-d) * PRD；PRD is the metal-oxide-semiconductor of setting
The duty ratio CMP2 value of switch periods value, PWM2 is loaded at the maximum moment in period；
Step 4:PWM1 uses high level effective model, i.e., output high electricity when counter register is greater than comparand register CMP1 value
Flat, PWM2 uses low level effective model, and counter register exports low level, PWM1 duty when being greater than comparand register CMP1 value
Than central point in triangular carrier Vr1At the maximum moment, PWM2 duty ratio central point is in triangular carrier Vr20 moment.
Preferably, the metal-oxide-semiconductor switch periods value is set as variable frequency switch week value.
The utility model has the advantages that a kind of crisscross parallel Buck power control circuit provided by the invention and its control method, it is only necessary to
The value for adjusting the period register inside DSP, without using Phaseshift controlling register, algorithm is simpler.Its algorithm is simple
Effectively, it is possible to reduce inside DSP in conversion process 180 ° of simultaneous phase shifting operation the algorithm times and error probability, it is possible to reduce
Code length improves efficiency of algorithm and reliability.
Detailed description of the invention
Fig. 1 is the structural block diagram of applied power source module of the invention；
Fig. 2 is the structural block diagram of applicating example power module of the invention；
Fig. 3 is the schematic diagram of substituted traditional 180 ° of algorithms of phase shift of the invention；
Fig. 4 is a kind of schematic diagram of 180 ° of algorithms of fixed frequency phase shift of the invention；
Fig. 5 is the schematic diagram of the new 180 ° of algorithms of Frequency phase shift of one kind of the invention.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figs. 1-2, a kind of crisscross parallel Buck power control circuit, comprising: two-way parallel connection DC/DC translation circuit,
Digital power controller DSP, driving isolating amplifier circuit, the two-way parallel connection DC/DC translation circuit respectively with power supply E, resistance R
It is connected, the digital power controller DSP sends the driving signal of 180 ° of two-way phase phase difference, through driving isolating amplifier circuit
Afterwards for controlling two-way parallel connection DC/DC translation circuit.Parallel connection power supply DC/DC translation circuit needs the drive of 180 ° of two-way phase phase difference
Dynamic signal, such output current ripple can reduce half, and effectively reduce inductance value and inductance volume, reduce output filtering
The capacitance of capacitor.
The two-way parallel connection DC/DC translation circuit includes: the first metal-oxide-semiconductor S1, the second metal-oxide-semiconductor S2, first diode D1,
Two diode D2, first capacitor C1, filter capacitor Co, the first inductance LA, the second inductance LB；First metal-oxide-semiconductor S1The pole S be connected to
One diode D1K grade；First metal-oxide-semiconductor S1D grade connect first capacitor C1One end, be connected with one end of power supply E；2nd MOS
Pipe S2S grade connect the second diode D2K grade, the second metal-oxide-semiconductor S2D grade connect capacitor C1One end, one end with power supply E
It is connected, capacitor C1The other end and first diode D1, the second diode D2A grade be connected after other end phase with power supply E
Even；First inductance LAOne end and the first metal-oxide-semiconductor S1S be extremely connected, the other end and output filter capacitor CoIt is connected；Second inductance
LBOne end and the second metal-oxide-semiconductor S1S be extremely connected, the other end and output filter capacitor CoIt is connected, filter capacitor CoThe other end and
Two diode D2A grade be connected, resistance R and filter capacitor CoIt is in parallel.
The driving isolating amplifier circuit output end G1 and the first metal-oxide-semiconductor S1The pole G be connected with the pole S, output end G2 with
Second metal-oxide-semiconductor S2The pole G be connected with the pole S.
As shown in figure 3, traditional production method that realize 180 ° of DSP output phase shift is to pass through phase shifting control inside DSP
Register PHS obtains the triangular carrier V of 180 ° of two phase shiftsr1And Vr2, then with identical duty ratio CMP value and triangular carrier
It is compared, obtains two-way and differ 180 ° of pwm signal, 180 ° of PWM1 and PWM2 signal phase shift of DSP output.
As shown in figure 4, a kind of crisscross parallel Buck power control circuit fixed frequency control method, the specific steps are as follows:
Step 1: the triangular carrier V of two same phases is automatically generated inside digital power processor DSPr1With triangular carrier Vr2；
Step 2: for the dutyfactor value that first via driving signal PWM1 is used for CMP1=d*PRD, d is that the needs that DSP is calculated are defeated
Dutyfactor value out, PRD are the metal-oxide-semiconductor switch periods value of setting, and the duty ratio CMP1 value of PWM1 is carried out in period zero-acrross ing moment
It loads；
Step 3: the dutyfactor value that the second tunnel driving signal PWM2 is used is CMP2=(1-d) * PRD；PRD is the metal-oxide-semiconductor of setting
The duty ratio CMP2 value of switch periods value, PWM2 is loaded at the maximum moment in period；
Step 4:PWM1 uses high level effective model, i.e., output high electricity when counter register is greater than comparand register CMP1 value
Flat, PWM2 uses low level effective model, and counter register exports low level, PWM1 duty when being greater than comparand register CMP1 value
Than central point in triangular carrier Vr1At the maximum moment, PWM2 duty ratio central point is in triangular carrier Vr20 moment.
As shown in figure 5, a kind of crisscross parallel Buck power control circuit Frequency control method, the specific steps are as follows:
Step 1: the triangular carrier V of two same phases is automatically generated inside digital power processor DSPr1With triangular carrier Vr2；
Step 2: for the dutyfactor value that first via driving signal PWM1 is used for CMP1=d* PRD 1, d is the need that DSP is calculated
The dutyfactor value to be exported, PRD1 are metal-oxide-semiconductor frequency conversion t0 moment, value period 1, and the value of PWM1 duty ratio CMP1 becomes in metal-oxide-semiconductor
Frequency period 1 value zero-acrross ing moment is loaded；
Step 3: the dutyfactor value that the second tunnel driving signal PWM2 is used is t0 moment metal-oxide-semiconductor for CMP2=(1-d) * PRD1, PRD1
The value of frequency conversion period 1 value, PWM2 duty ratio CMP2 is loaded at the metal-oxide-semiconductor frequency conversion period 1 value maximum moment；
Step 4:PWM1 uses high level effective model, i.e., output high electricity when counter register is greater than comparand register CMP1 value
Flat, PWM2 uses low level effective model, i.e., exports low level when counter register is greater than comparand register CMP1 value, PWM1 is accounted for
Sky is than central point in triangular carrier Vr1At the maximum moment, PWM2 duty ratio central point is in triangular carrier Vr20 moment, in subsequent time
T2, PWM1 and PWM2 when metal-oxide-semiconductor frequency cycle value becomes PRD2, in the case of repeatedly frequency conversion can be realized to step 4 in step 1
180 ° of phase shift.
Embodiment:
Power supply 100 needs DSP control system 104 defeated when parallel electric source module 101, which is started to work, powers to ohmic load 102
Two 180 ° of phase shift of driving signal PWM1 and PWM2 out, is then output to power module 101 through overdrive circuit 103, control
The operation of circuit.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of crisscross parallel Buck power control circuit, comprising: two-way parallel connection DC/DC translation circuit, digital power controller
DSP, driving isolating amplifier circuit, it is characterised in that: the two-way parallel connection DC/DC translation circuit respectively with power supply E, resistance R phase
Connection, the digital power controller DSP sends the driving signal of 180 ° of two-way phase phase difference, after driving isolating amplifier circuit
For controlling two-way parallel connection DC/DC translation circuit.
2. crisscross parallel Buck power control circuit according to claim 1, it is characterised in that: the two-way parallel connection DC/
DC translation circuit includes: the first metal-oxide-semiconductor S1, the second metal-oxide-semiconductor S2, first diode D1, the second diode D2, first capacitor C1, filter
Wave capacitor Co, the first inductance LA, the second inductance LB；First metal-oxide-semiconductor S1The pole S be connected to first diode D1K grade；First MOS
Pipe S1D grade connect first capacitor C1One end, be connected with one end of power supply E；Second metal-oxide-semiconductor S2S grade connect the second diode
D2K grade, the second metal-oxide-semiconductor S2D grade connect capacitor C1One end, be connected with one end of power supply E, capacitor C1The other end and
One diode D1, the second diode D2A grade be connected after be connected with the other end of power supply E；First inductance LAOne end and first
Metal-oxide-semiconductor S1S be extremely connected, the other end and output filter capacitor CoIt is connected；Second inductance LBOne end and the second metal-oxide-semiconductor S1The pole S
It is connected, the other end and output filter capacitor CoIt is connected, filter capacitor CoThe other end and the second diode D2A grade be connected, resistance
R and filter capacitor CoIt is in parallel.
3. crisscross parallel Buck power control circuit according to claim 2, it is characterised in that: the driving isolation amplification
Circuit output end G1 and the first metal-oxide-semiconductor S1The pole G be connected with the pole S, output end G2 and the second metal-oxide-semiconductor S2The pole G be extremely connected with S
It connects.
4. crisscross parallel Buck power control circuit according to any one of claims 1 to 3, it is characterised in that: metal-oxide-semiconductor can
With IGBT, silicon-controlled substitution.
5. a kind of control method of crisscross parallel Buck power control circuit according to any one of claims 1 to 3, special
Sign is: including the following steps:
Step 1: the triangular carrier V of two same phases is automatically generated inside digital power processor DSPr1With triangular carrier Vr2；
Step 2: for the dutyfactor value that first via driving signal PWM1 is used for CMP1=d*PRD, d is that the needs that DSP is calculated are defeated
Dutyfactor value out, PRD are the metal-oxide-semiconductor switch periods value of setting, and the duty ratio CMP1 value of PWM1 is carried out in period zero-acrross ing moment
It loads；
Step 3: the dutyfactor value that the second tunnel driving signal PWM2 is used is CMP2=(1-d) * PRD；PRD is the metal-oxide-semiconductor of setting
The duty ratio CMP2 value of switch periods value, PWM2 is loaded at the maximum moment in period；
Step 4:PWM1 uses high level effective model, i.e., output high electricity when counter register is greater than comparand register CMP1 value
Flat, PWM2 uses low level effective model, and counter register exports low level, PWM1 duty when being greater than comparand register CMP1 value
Than central point in triangular carrier Vr1At the maximum moment, PWM2 duty ratio central point is in triangular carrier Vr20 moment.
6. the control method of crisscross parallel Buck power control circuit according to claim 5, it is characterised in that: described
Metal-oxide-semiconductor switch periods value is set as variable frequency switch week value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561199.XA CN109462335A (en) | 2018-12-20 | 2018-12-20 | Crisscross parallel Buck power control circuit and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561199.XA CN109462335A (en) | 2018-12-20 | 2018-12-20 | Crisscross parallel Buck power control circuit and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109462335A true CN109462335A (en) | 2019-03-12 |
Family
ID=65614001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811561199.XA Withdrawn CN109462335A (en) | 2018-12-20 | 2018-12-20 | Crisscross parallel Buck power control circuit and its control method |
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| Country | Link |
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| CN (1) | CN109462335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112311263A (en) * | 2020-10-20 | 2021-02-02 | 石家庄通合电子科技股份有限公司 | Rectifier PWM wave modulation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09233824A (en) * | 1996-02-28 | 1997-09-05 | Hitachi Ltd | Multiplex converter controller |
| CN103973114A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Constant power control direct-current power supply |
| CN104135002A (en) * | 2014-07-11 | 2014-11-05 | 邯郸美的制冷设备有限公司 | Staggered power factor corrector |
| US20150280591A1 (en) * | 2014-03-28 | 2015-10-01 | Denso Corporation | Power conversion apparatus |
| CN105591559A (en) * | 2016-03-08 | 2016-05-18 | 华南理工大学 | Multi-port converter based on high-frequency inversion |
| CN107863882A (en) * | 2017-11-30 | 2018-03-30 | 安徽维新能源技术有限公司 | Buck converter BUCK circuits |
-
2018
- 2018-12-20 CN CN201811561199.XA patent/CN109462335A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09233824A (en) * | 1996-02-28 | 1997-09-05 | Hitachi Ltd | Multiplex converter controller |
| US20150280591A1 (en) * | 2014-03-28 | 2015-10-01 | Denso Corporation | Power conversion apparatus |
| CN103973114A (en) * | 2014-05-06 | 2014-08-06 | 中国电子科技集团公司第四十一研究所 | Constant power control direct-current power supply |
| CN104135002A (en) * | 2014-07-11 | 2014-11-05 | 邯郸美的制冷设备有限公司 | Staggered power factor corrector |
| CN105591559A (en) * | 2016-03-08 | 2016-05-18 | 华南理工大学 | Multi-port converter based on high-frequency inversion |
| CN107863882A (en) * | 2017-11-30 | 2018-03-30 | 安徽维新能源技术有限公司 | Buck converter BUCK circuits |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112311263A (en) * | 2020-10-20 | 2021-02-02 | 石家庄通合电子科技股份有限公司 | Rectifier PWM wave modulation method and device |
| CN112311263B (en) * | 2020-10-20 | 2021-11-12 | 石家庄通合电子科技股份有限公司 | Rectifier PWM wave modulation method and device |
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Application publication date: 20190312 |