CN209516935U - Single-input multi-output M switch group DC-DC converter - Google Patents
Single-input multi-output M switch group DC-DC converter Download PDFInfo
- Publication number
- CN209516935U CN209516935U CN201821186439.8U CN201821186439U CN209516935U CN 209516935 U CN209516935 U CN 209516935U CN 201821186439 U CN201821186439 U CN 201821186439U CN 209516935 U CN209516935 U CN 209516935U
- Authority
- CN
- China
- Prior art keywords
- switching group
- port
- output
- switch
- load
- 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.)
- Active
Links
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 241000218737 Mycobacterium phage Power Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model provides a single input many output M switch block DC-DC converter. The converter comprises a direct current input power supply, an M-1 path direct current load, M switch groups and a coupling inductor. Each switch group is formed by connecting N power switch units in series. The utility model discloses the circuit has M ports, and can divide into three kinds with DC power supply, M-1 way DC load's connected mode all the way, and the step-down is realized to first mode, and the second kind mode is realized stepping up, and the step-up and step-down are realized to the third kind mode to in the third kind mode, through the concrete port that changes DC power supply and connect, can realize the step-up and step-down of multiple different voltage levels. The utility model discloses a carrier wave phase-shifting PWM control controls switching on, turn-off of switch tube in the power switch unit and controls, realizes load voltage's regulation. The utility model discloses be fit for the high-power direct current application of high pressure of single input multi-output.
Description
Technical field
The utility model relates to distributed generation systems and direct current transportation field, and in particular to a kind of single input and multi-output M
Switching group DC-DC converter.
Background technique
With the development of new energy power generation technology, the development of DC load increased with D.C. high voltage transmission, DC-DC becomes
Parallel operation also increases rapidly in the application that distributed generation system, wind-powered electricity generation field energy collect with direct current transportation field.In these fields,
Multiple DC power supplies, DC load how are connected simultaneously and realize that high-power transformation is two important technical problems.Needle
Connection to multiple DC power supplies, DC load, conventionally used multiple DC-DC converters connect DC power supply and DC load
Be connected on DC bus, realize that energy collects and distributes by DC bus, using multiple converters undoubtedly increase system at
Sheet and complexity.Therefore, research multiterminal DC-DC high tension transformer is imperative.
Utility model content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, propose a kind of single input and multi-output M switch
Group DC-DC converter.
The purpose of this utility model, which one of adopts the following technical scheme that, to be realized.
Single input and multi-output M switching group DC-DC converter includes a direct-current input power supplying Udc, the road M-1 DC load
(R1、R2、…、RM-1), M switching group (A1、A2、…、AM) and coupling inductance (Lp: Ls) be connected in series；J-th of switching group AjBy N
A power cell (SMAj1、SMAj2、…、 SMAjN) be composed in series, the value of j is 1~M, and N is positive integer；Jth switching group Aj's
Upper end constitutes converter jth port Tj, j value is 1~M-1, and the lower end of M-1 switching group constitutes port TM, M switching group
Lower end is connected with grounding point n.
Further, the first port T of single input and multi-output M switching group DC-DC converter1Voltage U1, second port
T2Voltage U2..., the port M-1 TM-1Voltage UM-1, M port TMVoltage UMMeet U1>U2>…>UM-1>UM。
Further, direct-current input power supplying Udc, the road M-1 DC load (R1、R2、…、RM-1) and M port (T1、
T2、…、TM) there are three types of different connection types.First way: first port T1Connect direct-current input power supplying UdcAnode, direct current
Input power UdcCathode with ground n connect, second port T2To M port TMSuccessively respectively with the road M-1 DC load (R1、
R2、…、RM-1) one end connection, the road M-1 DC load (R1、R2、…、RM-1) the other end be connected to ground, realize buck functionality；
The second way: direct-current input power supplying UdcAnode connection M port, direct-current input power supplying UdcCathode connect with ground n, the
Single port to the port M-1 successively respectively with the road M-1 DC load (R1、R2、…、 RM-1) one end connection, the road M-1 direct current is negative
Carry (R1、R2、…、RM-1) the other end be connected to ground, realize boost function；The third mode: direct-current input power supplying UdcAnode
Connect jth port (j value is 2~M-1), direct-current input power supplying UdcCathode with ground n connect, remaining M-1 port is successively divided
The road Bie Yu M-1 DC load (R1、R2、…、RM-1) one end connection, the road M-1 DC load (R1、R2、…、 RM-1) it is another
End is connected to ground, while realizing stepping functions, and the specific port by changing DC power anode connection, may be implemented
The buck of a variety of different voltages grades.
Further, the independence that the coupling inductance in bridge arm can be equal by upper bridge arm inductance and lower bridge arm inductance two values
Inductance substitution.
Further, power switch unit includes first switch tube, second switch, first diode, the second diode
And capacitor；Wherein, the anode of capacitor is connect with the cathode of the collector of second switch, the second diode, second switch
Emitter is connect with the cathode of the anode of the second diode, the collector of first switch tube, first diode, first switch tube
The cathode of emitter and the anode of first diode, capacitor connects；The collector of first switch tube is as the first output end, and first
The emitter of switching tube is as second output terminal.
Further, i-th of power switch unit SM of each switching groupAjiSecond output terminal and i+1 power
Switch unit SMAj(i+1)The first output end connection, wherein i value be 1~(N-1), j value be 1~M.
The control method of the above-mentioned converter of the utility model is: using M switching group (A of phase-shifting carrier wave PWM technical controlling1、
A2、…、AM) in switching tube conducting and shutdown；For generating each i-th of power switch unit of switching group compared with modulating wave
Control the triangular carrier u of signalCiIt is identical, wherein i value is 1~N；N number of carrier wave (uC1、uC2、…、uCN) successively lagging phase angle
360°/N；The road M-1 modulating wave uRef1~uRefM-1Using direct current wave.
In above-mentioned control method, jth road modulating wave uRefjWith i-th of carrier wave uCiPass through comparator COMPjiIt is compared, when
Jth modulating wave uRefjGreater than i-th carrier wave uCiWhen, comparator COMPjiHigh level is exported, as jth modulating wave uRefjLess than i-th
Carrier wave uCiWhen, comparator COMPjiExport low level, wherein the value of j is 1~M-1.Comparator COMP1iOutput as
One switching group A1I-th of power switch unit SMA1iFirst switch tube S1The control level of gate pole, comparator COMPjiOutput
By it is non-behind the door with comparator COMPj-1iOutput pass through XOR gate together, obtain the switching group A of jthjI-th power open
Close cell S MAjiFirst switch tube S1The control level of gate pole, in which: the value of j is 2~M-1, comparator COMPM-1iIt is defeated
M-th switching group A is obtained by NOT gate outMI-th of power switch unit SMAMiFirst switch tube S1The control electricity of gate pole
It is flat.First switch tube S in each power switch unit of each switching group1The power is obtained after the control level inversion of gate pole to open
Close the second switch S of unit2The control level of gate pole.
Compared with prior art, the utility model has the advantages that single input and multi-output M switching group DC-DC converter
Have the advantages that MMC, by changing the number of modules N in switching group, any output voltage may be implemented, be suitble to high pressure, big function
The application of rate occasion；Compared with existing DC-DC conversion circuit topology, the utility model proposes DC-DC converter can be one
In the case where a input DC power, realizes the road M-1 direct current output, significantly reduce engineering cost；By selecting converter
Different connection type between port and DC power supply, DC load, single input and multi-output M switching group DC-DC converter are able to achieve
The function of boosting, decompression while buck.
Detailed description of the invention
Fig. 1 is the circuit structure diagram under single input and multi-output M switching group second of connection type of DC-DC converter；
Fig. 2 is the power cell circuit structure diagram of the switching group DC-DC converter of single input and multi-output M shown in Fig. 1；
Fig. 3 is the phase-shifting carrier wave PWM control method of single input and multi-output M switching group DC-DC converter shown in FIG. 1
Structure chart；
Fig. 4 is the modulating wave of the used phase-shifting carrier wave PWM control method of four switching group DC-DC converter of single input and three output
And carrier waveform.
Fig. 5 is the simulation waveform of four switching group DC-DC converter of single input and three output.
Specific embodiment
Specific implementation for the content and feature that the utility model is further described, below in conjunction with attached drawing to the utility model
Scheme is specifically described, but the implementation of the utility model is without being limited thereto.If it is noted that there is not especially detailed description below
Process or symbol, be those skilled in the art can refer to the prior art understand or realize.
With reference to Fig. 1, the single input and multi-output M switching group DC-DC of the present embodiment becomes device, including direct-current input power supplying Udc、M-1
Road DC load (R1、R2、…、RM-1), M switching group (A1、A2、…、 AM) and coupling inductance (Lp: Ls)；Each switching group is by N
A power unit cascade composition, N is positive integer, and M is the positive integer more than or equal to 4 in this example.The lower end of first switch group A1
With coupling inductance (Lp: Ls) primary side LpSame Name of Ends connection, coupling inductance (Lp: Ls) primary side LpNon-same polarity and second switch
The upper end connection of group A2, jth switching group AjLower end and+1 switching group A of jthj+1Upper end connection, j value is 2~M-2, the
M-1 switching group AM-1Lower end and coupling inductance (Lp: Ls) pair side LsSame Name of Ends be connected, coupling inductance (Lp: Ls) pair side LsIt is non-
Same Name of Ends and M switching group AMUpper end connection, M switching group AMLower end connect with ground terminal n.Under second of connection type
Single port T1To the port M-1 TM-1Respectively successively with the road M-1 DC load (R1、R2、…、RM-1) one end be connected, the road M-1
DC load (R1、R2、…、RM-1) the other end be connected to the ground, M port TMWith direct-current input power supplying UdcAnode connection, directly
Flow input power UdcCathode with ground n connect.As shown in Figure 1, i-th of power switch unit (SM of each switching groupAji)
Two output ends and i+1 power switch unit (SMAj(i+1)) the connection of the first output end, wherein i value is 1~N-1, and j takes
Value is 1~M.Power module is using half-bridge submodule shown in Fig. 2 in switching group.
As shown in Figure 1, direct current power source voltage U can be obtaineddc, the road M-1 load both end voltage U1~UM-1Are as follows:
uLp=uLs (2)
It can be obtained in conjunction with (1) (2)
Wherein, 2≤j≤M.
According to phase-shifting carrier wave modulation strategy, the road M-1 modulating wave is selected are as follows:
Four switching group DC-DC converter of single input and three output uses second of connection type, and N=4, U in this examplec
=60V, U4=Udc=48V.In order to obtain three tunnels output U1=200V, U2=160V, U3=100V calculates to obtain modulating wave by formula (4)
uref1=0.5, uref2=0, uref3=-13/30.The waveform of gained modulating wave and carrier wave is as shown in Figure 4.
Four switching group DC-DC converter of single input and three output uses M switching group (A of phase-shifting carrier wave PWM technical controlling1、A2、
A3、A4) in switching tube conducting and shutdown；I-th of power switch unit control signal of each switching group is obtained compared with modulating wave
Carrier wave uCiIt is identical, in which: i value is 1~4；4 carrier wave (uC1、uC2、uC3、uC4) successively 90 ° of lagging phase angle, 3 road direct current tune
Wave processed is uRef1=0.5, uRef2=0, uRef3=-13/30.Jth road modulating wave uRefjWith i-th of carrier wave uCiCompared by jth
Device is compared, as jth modulating wave uRefjGreater than i-th carrier wave uCiWhen, jth comparator exports high level, when jth modulating wave
uRefjLess than i-th carrier wave uCiWhen, jth comparator exports low level, and the value of j is 1~M-1.Comparator COMP1iOutput make
For first switch group A1I-th of power switch unit SMA1iFirst switch tube S1The control level of gate pole, comparator COMPji
Output by it is non-behind the door with comparator COMPj-1iOutput pass through XOR gate together, obtain the switching group A of jthjI-th of power
Switch unit SMAjiFirst switch tube S1The control level of gate pole, in which: the value of j is 2~M-1, comparator COMPM-1i's
Output obtains m-th switching group A by NOT gateMI-th of power switch unit SMAMiFirst switch tube S1The control electricity of gate pole
It is flat.First switch tube S in each power switch unit of each switching group1The power is obtained after the control level inversion of gate pole to open
Close the second switch S of unit2The control level of gate pole.
Fig. 5 is N=4, UdcWhen=240V, the simulation waveform of four switching group DC-DC converter of single input and three output, from upper
It is successively the first modulating wave u underRef1, the second modulating wave uRef2, third modulating wave uRef3, the first load voltage U1It is opened with first
Pass group output voltage uA1, the second load voltage U2With the voltage u of second switch groupA2, third load voltage U3With third switching group
Voltage uA3, DC input voitage UdcWith the 4th switching group voltage uA4.From waveform diagram as it can be seen that U1、U2、U3Although being pulsating direct current,
But its average value is respectively target DC voltage 200V, 160V, 100V.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (7)
1. single input and multi-output M switching group DC-DC converter, it is characterised in that: including a direct-current input power supplying (U dc), M-1
Road DC load (R 1、R 2、…、R M-1), M switching group (A1、A2、…、AM) and coupling inductance (L p:L s) be connected in series；J-th
Switching group (Aj) by N number of power cell (SMAj1、SMAj2、…、SMAjN) be composed in series, the value of j is 1 ~ M, and N is positive integer；The
J switching group (Aj) upper end constitute converter jth port Tj, j value is 1 ~ M-1, and the lower end of M-1 switching group constitutes port TM,
The lower end of M switching group is connected with grounding point n.
2. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: first port
(T1) voltage beU 1, second port (T2) voltage beU 2, successively sequentially, the port M-1 (TM-1) voltage beU M-1, the end M
Mouth (TM) voltage beU M, and meetU 1>U 2>…> U M-1>U M。
3. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: direct current input electricity
Source (U dc), the road M-1 DC load (R 1、R 2、…、R M-1) and M port (T1、T2、…、TM) there are three types of different connection types；The
A kind of mode are as follows: first port (T1) connection direct-current input power supplying (U dc) anode, direct-current input power supplying (U dc) cathode and ground
(n) it connects, second port (T2) to M port (TM) successively respectively with the road M-1 DC load (R 1、R 2、…、R M-1) one end connect
It connects, the road M-1 DC load (R 1、R 2、…、R M-1) the other end be connected to ground, realize buck functionality；The second way are as follows: direct current
Input power (U dc) anode connection M port, direct-current input power supplying (U dc) cathode with ground (n) connect, first port (T1)
To the port M-1 (TM-1) successively respectively with the road M-1 DC load (R 1、R 2、…、R M-1) one end connection, the road M-1 DC load
(R 1、R 2、…、R M-1) the other end be connected to ground, realize boost function；The third mode are as follows: direct-current input power supplying (U dc) just
Pole connect jth port, j value be 2 ~ M-1, direct-current input power supplying (U dc) cathode with ground (n) connect, remaining M-1 port according to
It is secondary respectively with the road M-1 DC load (R 1、R 2、…、R M-1) one end connection, the road M-1 DC load (R 1、R 2、…、R M-1) it is another
One end is connected to ground, while realizing stepping functions.
4. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: coupling inductance can
By upper bridge arm inductance (L p) and lower bridge arm inductance (L s) the equal separate inductor substitution of two values.
5. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: first switch group
(A1) lower end and coupling inductance primary side (L p) Same Name of Ends connection, coupling inductance primary side (L p) non-same polarity and second switch
Group (A2) upper end connection, jth switching group (Aj) lower end and+1 switching group (A of jthj+1) upper end connection, the value of j is 2 ~ M-
2, the lower end of M-1 switching group and coupling inductance pair side (L s) Same Name of Ends connection, coupling inductance pair side (L s) non-same polarity
With M switching group (AM) upper end connection, M switching group (AM) lower end connect with ground terminal (n).
6. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: power switch list
Member includes first switch tube (S1), second switch (S2), first diode (D1), the second diode (D2) and capacitor (CSM)；Its
In, capacitor (CSM) anode with second switch (S2) collector, the second diode (D2) cathode connection, second switch
(S2) emitter and the second diode (D2) anode, first switch tube (S1) collector, first diode (D1) cathode
Connection, first switch tube (S1) emitter and first diode (D1) anode, capacitor (CSM) cathode connection；First switch
Manage (S1) collector as the first output end, first switch tube (S1) emitter as second output terminal.
7. single input and multi-output M switching group DC-DC converter according to claim 1, it is characterised in that: each switching group
I-th of power switch unit (SMAji) second output terminal and i+1 power switch unit (SMAj(i+1)) first output
End connection, wherein i value is 1 ~ (N-1), and j value is 1 ~ M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186439.8U CN209516935U (en) | 2018-07-25 | 2018-07-25 | Single-input multi-output M switch group DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186439.8U CN209516935U (en) | 2018-07-25 | 2018-07-25 | Single-input multi-output M switch group DC-DC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209516935U true CN209516935U (en) | 2019-10-18 |
Family
ID=68186854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821186439.8U Active CN209516935U (en) | 2018-07-25 | 2018-07-25 | Single-input multi-output M switch group DC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209516935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880235A (en) * | 2018-07-25 | 2018-11-23 | 华南理工大学 | Single-input multi-output M switch group DC-DC converter and control method thereof |
-
2018
- 2018-07-25 CN CN201821186439.8U patent/CN209516935U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880235A (en) * | 2018-07-25 | 2018-11-23 | 华南理工大学 | Single-input multi-output M switch group DC-DC converter and control method thereof |
| CN108880235B (en) * | 2018-07-25 | 2021-07-23 | 华南理工大学 | Single-input multi-output M switch group DC-DC converter and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109889047A (en) | A kind of two-stage type DC-DC converter suitable for wide input wide output voltage range | |
| CN105553266B (en) | A kind of crisscross parallel high-gain Boost translation circuits and its working method | |
| CN204103797U (en) | The T-shaped inverter of a kind of accurate Z source three level | |
| CN111431415B (en) | High-boost isolated DC converter with parallel input and series output | |
| CN108512430A (en) | A kind of three Port Translation device of ZVZCS full-bridges and its control method | |
| CN109842299B (en) | Combined direct current conversion system and control method thereof | |
| CN114583951A (en) | High-gain converter for photovoltaic direct current module and control method thereof | |
| CN109302063A (en) | Non-isolation type Buck-Boost DC converter with wide conversion ratio | |
| CN112928919A (en) | Isolated high-frequency resonant DC-DC converter with wide output voltage range and method | |
| Lee et al. | Design and control of novel topology for photovoltaic DC/DC converter with high efficiency under wide load ranges | |
| Shen et al. | Dual-input isolated converter with dual-charge-pump cell for high step-up voltage ratio achievement | |
| CN111342664A (en) | Integrated DC-DC converter and control method thereof | |
| CN209516935U (en) | Single-input multi-output M switch group DC-DC converter | |
| CN204465377U (en) | A kind of and series interleaved formula three Port Translation device | |
| CN109818494A (en) | A kind of quasi- source Y DC-DC converter of high gain voltage type | |
| CN112968603A (en) | Wide-transformation-ratio transformerless buck-boost converter | |
| CN209419304U (en) | Power supply unit and system | |
| CN108023496B (en) | Series simultaneous selection switch voltage type single-stage multi-input low-frequency link inverter | |
| CN208849672U (en) | Single-input double-output three-switch-group DC-DC converter | |
| CN108054946B (en) | Voltage type single-stage multi-input low-frequency link inverter with built-in parallel time-sharing selection switch | |
| CN115664169A (en) | Quasi-peak current control method for bidirectional four-switch Buck-Boost | |
| CN111669057B (en) | DC boost converter and control method thereof | |
| CN112968601A (en) | Non-isolated bidirectional direct current converter with high voltage conversion ratio | |
| CN108880235A (en) | Single-input multi-output M switch group DC-DC converter and control method thereof | |
| CN206712678U (en) | A kind of multi input parallel power converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |