CN110518797A - A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output - Google Patents
A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output Download PDFInfo
- Publication number
- CN110518797A CN110518797A CN201810485315.8A CN201810485315A CN110518797A CN 110518797 A CN110518797 A CN 110518797A CN 201810485315 A CN201810485315 A CN 201810485315A CN 110518797 A CN110518797 A CN 110518797A
- Authority
- CN
- China
- Prior art keywords
- branch line
- circuit
- boosting
- parallel
- single channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H02M3/158—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
- H02M3/1582—Buck-boost converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a kind of bi-directional DC-DC Width funtion modulation circuits of reduction ripple output, including multiple single channel voltage boosting/lowering circuits, above-mentioned multiple single channel voltage boosting/lowering circuit formation are connected in parallel, single channel voltage boosting/lowering circuit includes decompression control thyristor T, boosting rectifier control thyristor T, inductance L, reduction voltage circuit diode D, booster circuit diode D, capacitor C, capacitor C connects to form branch line A with booster circuit diode D, branch line A formation branch line B in parallel with boosting rectifier control thyristor T, branch line B connects to form branch line C with inductance L, branch line C formation branch line D in parallel with reduction voltage circuit diode D, branch line D connects to form single channel voltage boosting/lowering circuit with decompression control thyristor T.The present invention substantially reduces ripple output by the way of by the circuit crisscross parallel with step-up/down function, simplifies with structure, at low cost, ripple exports low feature.
Description
Technical field
The present invention relates to a kind of bi-directional DC-DC Width funtion modulation circuits, in particular to a kind of to reduce the double of ripple output
To DC-DC Width funtion modulation circuit, belong to DC-DC converter field.
Background technique
In order to realize the continuously adjustable of voltage in bidirectional DC-DC converter, general prime is boosted using BOOST circuit,
Rear class obtains low-voltage using BUCK converter, realizes demand using the mode of two-stage circuit, so that system became
Complexity, and the pressure voltage of switch tube has very high requirement in front stage circuits, to increase the cost of system.
Summary of the invention
The bi-directional DC-DC Width funtion modulation circuit that the present invention reduces ripple output discloses new scheme, and use will have
The mode of the circuit crisscross parallel of step-up/down function substantially reduces ripple output, solves existing scheme system complex, cost
Height, single inductance ripple export big problem.
The bi-directional DC-DC Width funtion modulation circuit that the present invention reduces ripple output includes multiple single channel step-up/down electricity
Road, above-mentioned multiple single channel voltage boosting/lowering circuit formation are connected in parallel, and single channel voltage boosting/lowering circuit includes decompression control half
Conductor switch element T, boosting rectifier control thyristor T, inductance L, reduction voltage circuit diode D, booster circuit diode D,
Capacitor C, capacitor C connect to form branch line A with booster circuit diode D, and branch line A is in parallel with boosting rectifier control thyristor T
It forms branch line B, branch line B and inductance L to connect to form branch line C, branch line C formation branch line D, branch line D in parallel with reduction voltage circuit diode D
It connects to form single channel voltage boosting/lowering circuit with decompression control thyristor T.
Further, the bi-directional DC-DC Width funtion modulation circuit of the reduction ripple output of this programme includes forming list in parallel
Channel voltage boosting/lowering circuit A, single channel voltage boosting/lowering circuit B.Single channel voltage boosting/lowering circuit A includes that decompression control is partly led
Body switch element T1, boosting rectifier control thyristor T3, inductance L1, reduction voltage circuit diode D3, booster circuit diode
D1, capacitor C, capacitor C connect to form branch line A1 with booster circuit diode D1, branch line A1 and boosting rectifier control thyristor
T3 parallel connection forms branch line B1, branch line B1 and inductance L1 and connects to form branch line C1, branch line C1 shape in parallel with reduction voltage circuit diode D3
At branch line D1, branch line D1 connects to form single channel voltage boosting/lowering circuit A with decompression control thyristor T1.Single channel
Voltage boosting/lowering circuit B includes decompression control thyristor T2, boosting rectifier control thyristor T4, inductance L2, drop
Volt circuit diode D4, booster circuit diode D2, capacitor C, capacitor C connect to form branch line A2 with booster circuit diode D2,
Branch line A2 formation branch line B2 in parallel with boosting rectifier control thyristor T4, branch line B2 connect to form branch line C2 with inductance L2,
Branch line C2 formation branch line D2 in parallel with reduction voltage circuit diode D4, branch line D2 connect shape with decompression control thyristor T2
At single channel voltage boosting/lowering circuit B.
Further, the reduction voltage circuit diode D and a resistor coupled in parallel of this programme, booster circuit diode D and a resistance are simultaneously
Connection.And after upper resistance, the pressure drop of diode both ends does not reduce, but electric current reduces, thus effective protection diode.It is in parallel
Resistance can also be formed capacitor electric discharge access.
Further, the decompression control thyristor T, boosting rectifier control thyristor T of this programme are three poles
Pipe or metal-oxide-semiconductor.
The bi-directional DC-DC Width funtion modulation circuit use that the present invention reduces ripple output will have step-up/down function
The mode of circuit crisscross parallel substantially reduces ripple output, simplifies with structure, at low cost, ripple exports low feature.
Detailed description of the invention
Fig. 1 is the schematic diagram of one of circuit embodiments of the present invention.
Fig. 2 is the schematic diagram of single channel voltage boosting/lowering circuit.
Fig. 3 is equivalent booster circuit schematic diagram.
Fig. 4 is equivalent reduction voltage circuit schematic diagram.
Specific embodiment
This programme discloses a kind of DC-DC current transformer, Boost and Buck function is incorporated in the same circuit, so that
Circuit not only can be depressured but also can boost simultaneously, so that it is adjustable to several kilovolts of continuously smooth from zero volt to realize voltage, so that
The voltage of prime reduces, and reduces design difficulty.And the crisscross parallel mode that the topology uses can largely reduce switch
Ripple.
The crisscross parallel bidirectional DC-DC converter of this programme can substantially reduce system bulk, weight and cost, power flow direction
It is easily controllable, and the design that multiple single channel Buck-Boost basic circuit paralleling and interleavings work can be effectively improved output by it
Current ripples make each channel current stress become smaller while increasing output power, improve transducer effciency and performance.Fig. 1
For the topological structure of main circuit, Vout+, Vout- are DC output end in figure, and Vin+, Vin- are direct-flow input end, inductance: L1,
L2, diode: D1, D2, D3, D4, metal-oxide-semiconductor: T1, T2, T3, T4, capacitor: the circuit of C1, Fig. 1 form two circuits, from function
Can on see both can have boost function while or have a buck functionality, circuit is using the control method of crisscross parallel in maximum journey
Ripple voltage is reduced on degree, reduces the difficulty integrally filtered.As shown in Fig. 2, T3 sends out wave if metal-oxide-semiconductor T1 is connected, it can
To realize that boost function, referred to as state 1, T3 disconnect, buck functionality is may be implemented in T1 hair wave, is called state 2, same in T1 and T3
When acting, according to the difference of its duty ratio, that is, realize that buck functionality may be implemented again in boosting, is called state 3.This programme is adopted
With determining to take which kind of operating mode by the judgement to input voltage, output voltage, opening for switching tube can be reduced in this way
Loss is closed, the efficiency of system entirety is improved.As shown in figure 3, circuit equivalent is the booster circuit of standard, Fig. 4 when the system is stable
It can be equivalent to the reduction voltage circuit of standard, be voltage boosting-reducing circuit in state 3, as switch transistor T 1 and T3 for being depressured control
When simultaneously turning on, power supply gives L charging, loads powered by filter capacitor for it at this time, when switch transistor T 1 and T3 simultaneously turn off, load
Power supply and the charging of capacitor completed by inductance.System stablize when, the energy of the charge and discharge of inductance be it is equal, switching
Pipe conducting and circuit is BUCK state when less than 1/2, is BOOST state when being greater than 1/2, by adjusting duty ratio come to output
It is adjusted.Similarly for state 3, a switching loss is increased, the efficiency of system is reduced.
The three kinds of state settings of setting value point of this programme to required voltage: (1) it is less than input voltage；(2) input power is greater than
Less than input voltage plus 10v；(3) it is greater than input voltage and adds 10v.
Under the state 2 i.e. decompression mode of circuit, two switching tubes are staggeredly connected, and duty ratio is identical, and circuit parameter is identical,
In BUCK circuit duty ratio D value less than 0.5, be equal to 0.5, be greater than 0.5.When the value of each duty ratio, switching tube divides again
It is connected for interaction, while opening and simultaneously turning off four kinds of states.Such as T1 conducting, at this moment inductance L1 electric current rises in charging
State, T2 shutdown, D4 afterflow, the electric current of L2, which reduces, is in discharge condition, and Isc is the sum of L1 and L2 electric current, is represented by following formula:
It can be released by above formula, the maximum current ripple IL1+IL2 of inductance L1, L2 parallel output, shown in following expression,
The maximum current ripple IL1 of L1, and
△IL1=(Vin-Vout)*Ton/ L,
△IL2=-Vout*Ton/ L,
ΔIL1+ΔIL2=(Vin-2Vout)*Ton/ L,
IL1 is greater than IL1+IL2, it can be deduced that and do not have the inductive current of parallel circuit to be significantly greater than the inductive current after parallel connection,
It thus can reduce output voltage ripple.
When duty ratio is 0.5, only there are two state T1 and T2 alternate conductions.In the case where circuit is in decompression state by inputting
The relationship of voltage and output voltage, Vout=1/2*Vin reuse above formula and obtain, input voltage ripple is close to 0, compared to
Voltage ripple under single inductive mode is greatly reduced.The case where when can similarly obtain duty ratio greater than 0.5, is identical, and ripple obtains
To significantly inhibiting.Therefore, the range of regulation of this programme is wide, and application is wide, and can significantly inhibit ripple, reduces design
Difficulty improves system effectiveness.Based on the above feature, the bi-directional DC-DC Width funtion modulation circuit for reducing ripple output of this programme
There is substantive distinguishing features outstanding and significant progress compared to currently existing scheme.
The bi-directional DC-DC Width funtion modulation circuit that this programme reduces ripple output is not limited to disclose in specific embodiment
Content, the technical solution occurred in embodiment can the understanding based on those skilled in the art and extend, those skilled in the art
Member also belongs to the range of this programme according to the simple replacement scheme that this programme combination common knowledge is made.
Claims (4)
1. a kind of bi-directional DC-DC Width funtion modulation circuit for reducing ripple output, it is characterized in that including multiple single channel boosting/drops
Volt circuit, the multiple single channel voltage boosting/lowering circuit formation are connected in parallel, and the single channel voltage boosting/lowering circuit includes drop
Voltage-controlled thyristor T processed, boosting rectifier control thyristor T, inductance L, reduction voltage circuit diode D, booster circuit
Diode D, capacitor C, the capacitor C connect to form branch line A with the booster circuit diode D, the branch line A and the boosting
It controls thyristor T parallel connection and forms branch line B, the branch line B connects to form branch line C with the inductance L, the branch line C
Formation branch line D in parallel with the reduction voltage circuit diode D, the branch line D connect with decompression control thyristor T
Form the single channel voltage boosting/lowering circuit.
2. the bi-directional DC-DC Width funtion modulation circuit according to claim 1 for reducing ripple output, which is characterized in that institute
It includes forming single channel voltage boosting/lowering circuit A in parallel, list that stating, which reduces the bi-directional DC-DC Width funtion modulation circuit of ripple output,
Channel voltage boosting/lowering circuit B；
The single channel voltage boosting/lowering circuit A includes decompression control thyristor T1, boosting rectifier control semiconductor switch member
Part T3, inductance L1, reduction voltage circuit diode D3, booster circuit diode D1, capacitor C, the capacitor C and the booster circuit two
Pole pipe D1 connects to form branch line A1, branch line A1 formation branch line B1 in parallel with the boosting rectifier control thyristor T3,
The branch line B1 connects to form branch line C1 with the inductance L1, and the branch line C1 is in parallel with the reduction voltage circuit diode D3 to be formed
Branch line D1, the branch line D1 connect to form the single channel step-up/down electricity with decompression control thyristor T1
Road A；
The single channel voltage boosting/lowering circuit B includes decompression control thyristor T2, boosting rectifier control semiconductor switch member
Part T4, inductance L2, reduction voltage circuit diode D4, booster circuit diode D2, capacitor C, the capacitor C and the booster circuit two
Pole pipe D2 connects to form branch line A2, branch line A2 formation branch line B2 in parallel with the boosting rectifier control thyristor T4,
The branch line B2 connects to form branch line C2 with the inductance L2, and the branch line C2 is in parallel with the reduction voltage circuit diode D4 to be formed
Branch line D2, the branch line D2 connect to form the single channel step-up/down electricity with decompression control thyristor T2
Road B.
3. the bi-directional DC-DC Width funtion modulation circuit according to claim 1 for reducing ripple output, which is characterized in that institute
State reduction voltage circuit diode D and a resistor coupled in parallel, the booster circuit diode D and a resistor coupled in parallel.
4. the bi-directional DC-DC Width funtion modulation circuit according to any one of claim 1 to 3 for reducing ripple output,
It is characterized in that, the decompression control thyristor T, boosting rectifier control thyristor T are triode or metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485315.8A CN110518797A (en) | 2018-05-21 | 2018-05-21 | A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485315.8A CN110518797A (en) | 2018-05-21 | 2018-05-21 | A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110518797A true CN110518797A (en) | 2019-11-29 |
Family
ID=68621501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485315.8A Pending CN110518797A (en) | 2018-05-21 | 2018-05-21 | A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110518797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115622378A (en) * | 2022-12-06 | 2023-01-17 | 眉山博雅新材料股份有限公司 | High-frequency power supply and direct-current voltage stabilizing device applied to high-frequency power supply |
-
2018
- 2018-05-21 CN CN201810485315.8A patent/CN110518797A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115622378A (en) * | 2022-12-06 | 2023-01-17 | 眉山博雅新材料股份有限公司 | High-frequency power supply and direct-current voltage stabilizing device applied to high-frequency power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11664727B2 (en) | Switched-capacitor power converters | |
| CN110120752B (en) | Power converter and control method thereof | |
| US8488340B2 (en) | Power converter with boost-buck-buck configuration utilizing an intermediate power regulating circuit | |
| WO2018066444A1 (en) | Dc-dc converter | |
| JP4164130B2 (en) | High efficiency DC boost converter | |
| CN105141134B (en) | A kind of Switching Power Supply and the method for controlling the Switching Power Supply | |
| TWI495242B (en) | Bidirectional dc-dc converter | |
| US4713742A (en) | Dual-inductor buck switching converter | |
| US20100027297A1 (en) | Step-Up Converter Systems and Methods | |
| US20020047309A1 (en) | DC to DC converter and power management system | |
| EP2735073B1 (en) | System with battery charging device and vehicle electrical system power supply stage | |
| CN102638213A (en) | Bidirectional buck-boost power converter | |
| CN107112895A (en) | Switching regulator and its control method | |
| KR102344735B1 (en) | Improvement of Switching Loss in DC-DC Quadratic Boost Converter | |
| CN102290992A (en) | DC-DC boost converter circuit and method for driving the same | |
| CN109713901A (en) | A kind of end Boost coupling inductance formula buck translation circuit and control method | |
| US11601056B2 (en) | Hybrid architecture for DC-DC conversion | |
| CN109309448A (en) | A kind of wide output Cuk DC-DC converter of wide input | |
| CN109450260A (en) | A kind of capacitance series formula crisscross parallel circuit of reversed excitation | |
| CN108768171A (en) | The quasi- wide gain two-way DC converter of the sources Z-switching capacity of switch for electric vehicle | |
| CN110518797A (en) | A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output | |
| CN206323297U (en) | A kind of DC dc converter | |
| CN104956575A (en) | Dc-dc converter | |
| CN106787900A (en) | Boosting combining inverter and its control method | |
| CN1588772A (en) | Combined DC/DC booster converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191129 |