CN106505854A - Reconfigurable isolation multi-level converter - Google Patents
Reconfigurable isolation multi-level converter Download PDFInfo
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- CN106505854A CN106505854A CN201611205174.7A CN201611205174A CN106505854A CN 106505854 A CN106505854 A CN 106505854A CN 201611205174 A CN201611205174 A CN 201611205174A CN 106505854 A CN106505854 A CN 106505854A
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- 238000002955 isolation Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
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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
- 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
-
- 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
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention proposes a kind of reconfigurable isolation multi-level converter, including insulating power supply V1, V2, power switch tube S 1, power diode D1, D2；Power switch S1 and power diode D1, D2 constitute series parallel switch circuit, turn on and off the output voltage and electric current that control the unit by S1；Wherein, the positive pole of D1 is connected with the positive pole of V2, the negative pole of D1 is connected with the positive pole of V1, the positive pole of D2 is connected with the negative pole of V1, the negative pole of D2 is connected with the negative pole of V1, the source electrode of S1 is connected with the negative pole of V1, and the drain electrode of S1 is connected with the positive pole of V2, and the negative pole of the positive pole and V2 of V1 respectively constitutes the both positive and negative polarity output end of converter.The restructural isolation multi-level converter topology of the present invention, its elementary cell is isolated form voltage source unit, only need a power switch and two diodes just can be while realizing the connection in series-parallel of elementary cell, in addition, various connection in series-parallel combinations nested can be applied, the many level occasions of small-power low pressure are not only suitable for, high-power high voltage occasion is also applied for.
Description
Technical field
A kind of the present invention relates to power inverter technical field, more particularly to reconfigurable isolation multi-level converter.
Background technology
Multi-level converter can produce multi-ladder, low distortion voltage waveform, be particularly suitable for high-power high-voltage occasion, tool
Have the advantages that switching loss is little, the high and low EMI of efficiency.Many level switch changeover technology are in AC/DC power conversions, DC/AC conversion necks
Domain has obtained extensively application, and in DC/DC power conversion fields, multilevel generally needs multiple fundamental voltage sources or electric current
Source unit is coordinated with switch matrix carries out serial or parallel connection realization.
Under traditional pattern, in DC/DC power conversions, multilevel realizes by the string of normal power unit simultaneously
It is coupled structure to realize, and the string structure is relatively fixed, or series connection, or in parallel, if it is desired to which connection in series-parallel is combined then to be needed to increase
Plus substantial amounts of power switch.By taking three level as an example, as shown in Figure 1, wherein accompanying drawing 1 (a) is traditional connection in series-parallel combination
The non-isolated three-level structure of diode common cathode, accompanying drawing 1 (b) are the non-isolated three-level structures of power switch common source, attached
Fig. 1 (c) is the isolated form three-level structure of diode common cathode, and accompanying drawing 1 (d) is series connection three-level structure.Work(as can be seen from Fig. 1
Rate switch usage quantity is more, and therefore, power circuit and control circuit are all relative complex.
Content of the invention
In order to solve the problems of the prior art, the invention provides a kind of reconfigurable isolation multi-level converter is with same
The connection in series-parallel of Shi Shixian elementary cells, can be applied to many level demand occasions of small-power low pressure, be also applied for high-power high voltage
Occasion.
In a first aspect, a kind of reconfigurable isolation multi-level converter, including insulating power supply V1, V2, power switch tube S 1,
Power diode D1, D2；The power switch S1 constitutes series parallel switch circuit with described power diode D1, D2, by S1
Turn on and off control the unit output voltage and electric current；Wherein, the positive pole of D1 is connected with the positive pole of V2, the negative pole of D1 with
The positive pole of V1 is connected, and the positive pole of D2 is connected with the negative pole of V1, and the negative pole of D2 is connected with the negative pole of V1, the source electrode of S1 and the negative pole of V1
It is connected, the drain electrode of S1 is connected with the positive pole of V2, and the negative pole of the positive pole and V2 of V1 respectively constitutes the cathode output end of the converter
And cathode output end.
Further, the insulating power supply output identical voltage or identical electric current, when S1 is opened, V1 and V2 strings
Connection, output voltage is V1+V2=2V, two power supply automatic current equalizings；When S1 is turned off, V1 and V2 is in parallel, and output voltage is equal to V1=
V2=V, the two voltage are identical, automatically equalizing voltage.
Further, the insulating power supply V1 and V2 is approximate in power and voltage range, when S1 is opened, controls V1 and V2
For voltage output pattern, electric current automatic current equalizing；And when S1 is turned off, V1 and V2 is controlled for current output mode, current-mode is straight
Parallel connection is connect, voltage depends on load output.
Further, the switching tube S1 is MOSFET.
Second aspect, a kind of reconfigurable isolation multi-level converter, including insulating power supply V11, V12, V21, V22, work(
Rate switching tube S1, S11, S21, power diode D1, D2, D11, D12, D21, D22；Wherein, elementary cell 1 includes insulating power supply
V11, V12, power switch tube S 11, power diode D11, D12；Elementary cell 2 includes insulating power supply V21, V22, power switch
Pipe S21, power diode D21, D22；The power switch S11 constitutes series parallel switch with described power diode D11, D12
Circuit, by the output voltage and electric current, the power switch S21 and the work(that turn on and off control elementary cell 1 of S11
Rate diode D21, D22 constitute series parallel switch circuit, by the output voltage for turning on and off control elementary cell 2 of S21
And electric current；The connected mode of elementary cell is identical, and the positive pole of D11 is connected with the positive pole of V12, the positive pole phase of the negative pole of D11 and V11
Even, the positive pole of D12 is connected with the negative pole of V12, and the negative pole of D12 is connected with the negative pole of V11, and the source electrode of S1 is connected with the negative pole of V1,
The drain electrode of S1 is connected with the positive pole of V2, and the negative pole of the positive pole and V12 of V11 respectively constitutes the cathode output end and negative pole of elementary cell
Output end；Elementary cell 1, elementary cell 2, the element in the connected mode and elementary cell of switching tube S1 and diode D1, D2
Connected mode is identical.
Further, the positive pole of D1 is connected with the positive pole of elementary cell 2, and the negative pole of D1 is connected with the positive pole of elementary cell 1,
The positive pole of D2 is connected with the negative pole of elementary cell 2, and the negative pole of D2 is connected with the negative pole of elementary cell 1, the source electrode of S1 with substantially single
The negative pole of unit 1 is connected, and the drain electrode of S1 is connected with the positive pole of elementary cell 2, the negative pole of the positive pole of elementary cell 1 and elementary cell 2
Respectively constitute the cathode output end and cathode output end of nested type reconfigurable cell.
Further, by the on/off of controlling switch pipe S1, S11 and S21, to realize many level and many power etc.
Level output.
The third aspect, a kind of reconfigurable isolation multi-level converter, including multiple elementary cells, switching tube and two poles
Pipe, the elementary cell include insulating power supply V1, V2, power switch tube S 1, power diode D1, D2；The power switch S1
Series parallel switch circuit is constituted with described power diode D1, D2, by the output electricity for turning on and off the control unit of S1
Pressure and electric current；Wherein, the positive pole of D1 is connected with the positive pole of V2, and the negative pole of D1 is connected with the positive pole of V1, and the positive pole of D2 is negative with V1
Extremely it is connected, the negative pole of D2 is connected with the negative pole of V1, the source electrode of S1 is connected with the negative pole of V1, the drain electrode of S1 is connected with the positive pole of V2,
The negative pole of the positive pole and V2 of V1 respectively constitutes the cathode output end and cathode output end of the converter；Can nested type restructural list
First isolated converter topology unit includes two elementary cells, a switching tube and two diodes, described two elementary cells,
The connected mode of switching tube and two diodes is identical with the element connected mode in elementary cell；Two can nested type restructural
Cell isolation converter topology unit and a switching tube and two diodes may make up one again can nested type restructural list
First isolated converter topology unit, described two can nested type reconfigurable cell isolated converter topology unit, switching tube and two
The connected mode of individual diode is identical with the element connected mode in elementary cell.
Further, by the on/off of controlling switch pipe, to realize many level and the output of many power grades.
The invention has the beneficial effects as follows：The restructural that the present invention is provided isolates many level switching converter topologys, and which is basic
Unit is isolated form voltage source unit, it is only necessary to which a power switch and two diodes just can realize elementary cell simultaneously
Connection in series-parallel, additionally, various connection in series-parallel combination nested can be applied under the technology, is not only suitable for many level demand fields of small-power low pressure
Close, be also applied for high-power high voltage occasion.
Description of the drawings
Fig. 1 is traditional three level implementation schematic diagrames in DC/DC conversion, and wherein, Fig. 1 (a) is diode common cathode
Non-isolated three-level structure, Fig. 1 (b) is the non-isolated three-level structure of power switch common source, Fig. 1 (c) be diode altogether
The isolated form three-level structure of negative electrode, Fig. 1 (d) are series connection three-level structures；
Fig. 2 be the present invention can connection in series-parallel reconstruct isolated converter topology unit circuit diagram；
Fig. 3 is the nested type reconfigurable cell isolated converter topology unit circuit diagram of the present invention；
Fig. 4 is the high-power applications schematic diagram of a scenario of high reliability demand；
Fig. 5 is by the converter topology schematic diagram of two insulating power supply outputs of a transformer belt.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail the present invention.
The restructural isolation multi-level converter of the present invention, still by taking the realization of three level as an example.
Shown in accompanying drawing 2 be one basic can connection in series-parallel reconstruct isolated converter topological structure unit.V1 and V2 be every
From power supply, the two all can control output identical voltage or identical electric current.Power switch S1 and power diode D1 and D2
Constitute series parallel switch circuit, by S1 turn on and off control the unit output voltage and electric current.In one embodiment,
The positive pole of D1 is connected with the positive pole of V2, and the negative pole of D1 is connected with the positive pole of V1, and the positive pole of D2 is connected with the negative pole of V2, the negative pole of D2
Be connected with the negative pole of V1, the source electrode of S1 is connected with the negative pole of V1, the drain electrode of S1 is connected with the positive pole of V2, the positive pole and V2 of V1 negative
Pole respectively constitutes the cathode output end and cathode output end of unit.
When S1 is opened, insulating power supply V1 and V2 connect, and output voltage is equal to V1+V2=2V, two power supply automatic current equalizings；
When S1 is turned off, insulating power supply V1 and V2 are in parallel, and output voltage is equal to V1=V2=V, the two voltage are identical, automatically equalizing voltage.This
Automatically equalizing voltage closes automatic current equalizing can be real in the case where V1 and V2 are two kinds of identical output voltages, identical output current
Existing.
However, whether the circuit structure that the structure does not limit to V1 and V2 is identical, whether complete monomer power output is not limited to
Complete consistent.Also more flexible circuit form can be obtained by the reconstruct of addition control unit.Under this kind of circuit form, only
It is required that V1 and V2 is approximate in power and voltage range.When S1 is opened, the two is controlled for voltage output pattern, electric current is automatic
Flow；And when S1 is turned off, the two is controlled for current output mode, current-mode is directly in parallel, and voltage depends on load and exports.
Thus this reconfigured geometry can achieve the pattern of pulse voltage source and pulse current source consubstantiality isomery.
The structure can achieve to carry out fault redundance design, and when S1 is short-circuited failure, V1 and V2 are connected output all the time, and
When there is open circuit fault in S1, then V1 and V2 Parallel opertation all the time.
Using the reconfigurable cell shown in accompanying drawing 2 as elementary cell, it be as shown in Figure 3 nested type restructural power supply to constitute
Unit.In one embodiment, the positive pole of D1 is connected with the positive pole of elementary cell 2, the positive pole phase of the negative pole of D1 and elementary cell 1
Even, the positive pole of D2 is connected with the negative pole of elementary cell 2, and the negative pole of D2 is connected with the negative pole of elementary cell 1, the source electrode of S1 with basic
The negative pole of unit 1 is connected, and the drain electrode of S1 is connected with the positive pole of elementary cell 2, and the positive pole of elementary cell 1 and elementary cell 2 are born
Pole respectively constitutes the cathode output end and cathode output end of nested type reconfigurable cell.
In this case, many level and the output of many power grades can achieve, as shown in table 1.
The relation that 1 switch combination mode of table is exported with many level and many power grades
Can see from table, for 1,4,8 or 1,5,8 two groups of switch combinations can obtain the power output of 4UI, to the greatest extent
Pipe output voltage, electric current there occurs change, but power output is constant, thus in an invariable power demand system, both groups
Conjunction may serve to be reconstructed power supply structure, realize that power output is constant.Namely switch combination 1 is in all switchs
State under normal circumstances and keep opening or all short-circuit conditions of three in the case of to constitute power-supply system be high voltage-small current
Structure, and when switch S1 occurs open circuit fault, control S11 and S21 is switched on or off ensureing 4UI power simultaneously.Certainly
Can also analyze under other malfunctions, switch combination order.
Under nested type reconfigurable structures, the voltage and power grade of each elementary cell be can be made smaller, and convert
Various informative, under control reconfiguration and topology reconstruction dual combination, and state switching control is realized, for high-power applications demand
Occasion, need not do customized type design, it is only necessary to carry out appropriate design to controlling mode and series parallel switch.In switching power
In converter, voltage jump that each switch motion causes can affect the switching loss of power inverter, switch harmonic and
Electromagnetic interference (EMI).This nested type multi-level power converter can effectively reduce voltage jump during switch motion, so as to subtract
Little switching loss, switch harmonic and EMI.Output filter can be also reduced the power density that increases power inverter.
(1) present invention is applied to the high-power applications scene of high reliability demand
Under traditional approach, in the high occasion of some reliability requirements, multiple load groups will obtain the energy from same bus,
As shown in Figure 4, each load group has an isolated converter to keep apart load group with bus, once isolated converter event
Barrier, cut-out are contacted with bus, thus the design of isolated converter needs high reliability.However, it is possible to power demand is larger,
When designing single isolated converter and meeting demand herein, excessive, body is required to the electric pressure and volume of transformer of switching device
Product and weight all can be very huge.And accompanying drawing 2 and the unit structure shown in accompanying drawing 3, each little isolation source can be designed to less,
Power density is larger, the high-power isolated variable knot needed for only need to being combined into by several power switch and power diode
Structure, and such isolated converter possesses fault redundance restructural characteristic, preferably can serve in this kind of distribution system.
Accompanying drawing 2 or restructural power supply structure shown in accompanying drawing 3 are used for after the system, isolated converter output is when presence switch
During failure, output voltage can be changed, this also implies that load group bus is probably changed, for electricity needed for rear class load
Pressure needs more wide input voltage range power inverters in converter is selected, but prime reliability strengthens, power
Density is lifted.
(2) present invention is applied in the design of DC/DC isolated converters, constitutes multilevel, reduces wave filter design chi
Very little.
Such as accompanying drawing 5 is by the converter topology of two insulating power supply outputs of a transformer belt, in order to reduce
The capacity of passive device simultaneously improves power conversion efficiency.It is straight that the converter of isolation produces two outputs with constant duty ratio switch
Stream voltage.Voltage with multiple levels is produced by serial/parallel on-off circuit in the secondary side of transformer, and serial/parallel on-off circuit controls two
Output voltage is connected and in parallel, only by one power switch S1 of control.Therefore, on-off circuit is simplified.In output
The voltage pulsation of L-C wave filter input sides is reduced, thus output filter can be reduced.
Above content is further description made for the present invention with reference to specific preferred embodiment, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of without departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (9)
1. a kind of reconfigurable isolation multi-level converter, it is characterised in that：The converter includes insulating power supply V1, V2, work(
Rate switching tube S1, power diode D1, D2；The power switch S1 constitutes series parallel switch with described power diode D1, D2
Circuit, by S1 turn on and off control the unit output voltage and electric current；Wherein, the positive pole phase of the positive pole of D1 and V2
Even, the negative pole of D1 is connected with the positive pole of V1, and the positive pole of D2 is connected with the negative pole of V1, and the negative pole of D2 is connected with the negative pole of V1, S1's
Source electrode is connected with the negative pole of V1, and the drain electrode of S1 is connected with the positive pole of V2, and the negative pole of the positive pole and V2 of V1 respectively constitutes the conversion
The cathode output end and cathode output end of device.
2. converter according to claim 1, it is characterised in that：The insulating power supply exports identical voltage or identical
Electric current, when S1 is opened, V1 and V2 series connection, output voltage is V1+V2=2V, two power supply automatic current equalizings；When S1 is turned off,
V1 and V2 is in parallel, and output voltage is equal to V1=V2=V, the two voltage are identical, automatically equalizing voltage.
3. converter according to claim 1, it is characterised in that：The insulating power supply V1 and V2 is in power and voltage range
Approximately, when S1 is opened, V1 and V2 is controlled for voltage output pattern, electric current automatic current equalizing；And when S1 is turned off, control V1 and V2
For current output mode, current-mode is directly in parallel, and voltage depends on load output.
4. converter according to claim 1, it is characterised in that：The switching tube S1 is MOSFET.
5. a kind of reconfigurable isolation multi-level converter, it is characterised in that：The converter include insulating power supply V11, V12,
V21, V22, power switch tube S 1, S11, S21, power diode D1, D2, D11, D12, D21, D22；Wherein, elementary cell 1 is wrapped
Include insulating power supply V11, V12, power switch tube S 11, power diode D11, D12；Elementary cell 2 include insulating power supply V21,
V22, power switch tube S 21, power diode D21, D22；The power switch S11 and power diode D11, D12 structure
Bunchiness parallel control loop, by the output voltage and electric current that turn on and off control elementary cell 1 of S11, the power is opened
Close S21 and described power diode D21, D22 and constitute series parallel switch circuit, by S21 to turn on and off control substantially single
The output voltage and electric current of unit 2；The connected mode of elementary cell is identical, and the positive pole of D11 is connected with the positive pole of V12, the negative pole of D11
Be connected with the positive pole of V11, the positive pole of D12 is connected with the negative pole of V12, the negative pole of D12 is connected with the negative pole of V11, the source electrode of S1 with
The negative pole of V1 is connected, and the drain electrode of S1 is connected with the positive pole of V2, and the negative pole of the positive pole and V12 of V11 is just respectively constituting elementary cell
Pole output end and cathode output end；Elementary cell 1, elementary cell 2, connected mode and the base of switching tube S1 and diode D1, D2
Element connected mode in this unit is identical.
6. converter according to claim 5, it is characterised in that：The positive pole of D1 is connected with the positive pole of elementary cell 2, D1's
Negative pole is connected with the positive pole of elementary cell 1, and the positive pole of D2 is connected with the negative pole of elementary cell 2, the negative pole of D2 and elementary cell 1
Negative pole is connected, and the source electrode of S1 is connected with the negative pole of elementary cell 1, and the drain electrode of S1 is connected with the positive pole of elementary cell 2, elementary cell
The negative pole of 1 positive pole and elementary cell 2 respectively constitutes the cathode output end and cathode output end of nested type reconfigurable cell.
7. converter according to claim 5, it is characterised in that：Opening/closing by controlling switch pipe S1, S11, S21
Disconnected, to realize many level and the output of many power grades.
8. a kind of reconfigurable isolation multi-level converter, it is characterised in that：The converter includes multiple elementary cells, switch
Pipe and diode；The elementary cell includes insulating power supply V1, V2, power switch tube S 1, power diode D1, D2；The work(
Rate switchs S1 and constitutes series parallel switch circuit with described power diode D1, D2, controls the unit by turning on and off for S1
Output voltage and electric current；Wherein, the positive pole of D1 is connected with the positive pole of V2, and the negative pole of D1 is connected with the positive pole of V1, the positive pole of D2
It is connected with the negative pole of V1, the negative pole of D2 is connected with the negative pole of V1, the source electrode of S1 is connected with the negative pole of V1, the drain electrode of S1 is with V2 just
Extremely it is connected, the negative pole of the positive pole and V2 of V1 respectively constitutes the cathode output end and cathode output end of the converter；Can nested type
Reconfigurable cell isolated converter topology unit includes two elementary cells, a switching tube and two diodes, described two
The connected mode of elementary cell, switching tube and two diodes is identical with the element connected mode in elementary cell；Two can be embedding
Shell type reconfigurable cell isolated converter topology unit and a switching tube and two diodes may make up one again can be nested
Formula reconfigurable cell isolated converter topology unit, described two can nested type reconfigurable cell isolated converter topology unit,
The connected mode of switching tube and two diodes is identical with the element connected mode in elementary cell.
9. converter according to claim 8, it is characterised in that：By the on/off of controlling switch pipe, many to realize
Level and the output of many power grades.
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| CN201611205174.7A CN106505854A (en) | 2016-12-23 | 2016-12-23 | Reconfigurable isolation multi-level converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309452A (en) * | 2017-07-28 | 2019-02-05 | 北京德意新能电气有限公司 | A kind of adjustable structure changes DC/DC converter of output wide scope |
| CN114070044A (en) * | 2021-11-02 | 2022-02-18 | 北京动力源科技股份有限公司 | Isolated DCDC power supply cascade input method and circuit |
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| CN202634280U (en) * | 2012-04-19 | 2012-12-26 | 中国矿业大学(北京) | Isolation-type half-bridge three-level dual-direction DC/DC converter |
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| CN102005920A (en) * | 2010-10-29 | 2011-04-06 | 华南理工大学 | Three-level buck type conversion circuit and method |
| CN202634280U (en) * | 2012-04-19 | 2012-12-26 | 中国矿业大学(北京) | Isolation-type half-bridge three-level dual-direction DC/DC converter |
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| CN109309452A (en) * | 2017-07-28 | 2019-02-05 | 北京德意新能电气有限公司 | A kind of adjustable structure changes DC/DC converter of output wide scope |
| CN114070044A (en) * | 2021-11-02 | 2022-02-18 | 北京动力源科技股份有限公司 | Isolated DCDC power supply cascade input method and circuit |
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