CN114244121A - DC-DC series-parallel topological structure - Google Patents
DC-DC series-parallel topological structure Download PDFInfo
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- CN114244121A CN114244121A CN202111370427.7A CN202111370427A CN114244121A CN 114244121 A CN114244121 A CN 114244121A CN 202111370427 A CN202111370427 A CN 202111370427A CN 114244121 A CN114244121 A CN 114244121A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 28
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- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
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- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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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
- H02M3/22—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
- H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/08—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in parallel
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention provides a DC-DC series-parallel connection topological structure, which relates to the technical field of power electronics, and comprises the following components in part by weight: the rectifier circuits comprise transformer secondary sides and full-bridge rectifier units which are connected with each other; and each resonant circuit corresponds to one rectifying circuit, and the wave-sending mode of each resonant circuit is controlled to change the different polarity states in each rectifying circuit so as to realize DC-DC conversion. The wide-range constant-power DC-DC converter can realize wide-range constant-power DC-DC without adding an additional switching circuit, saves a large number of switching devices and sampling circuits, avoids failure risks added by adding a large number of switching functional units, simplifies control logic and optimizes cost space.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a DC-DC series-parallel topological structure.
Background
In the field of DC-DC, with the development of science and technology, the wide-range requirement for high output power is more and more obvious. For example, in the field of charging of a full-range new energy automobile caused by the technical form of a battery and the like, DC-DC power supplies with different specification output ranges and powers are required; the high-power electrolytic hydrogen production, at present, different technical routes exist in an electrolytic cell, the output voltage is various, and the constant power is widely applicable to various electrolytic hydrogen production application occasions; a high-power experimental power supply is used for verifying the reliability of power electronic equipment, performing cycle test, activating a battery assembly and the like, and similarly needs a wide-output-range constant-power DCDC conversion technology and the like. How to realize wide-range constant-power DC-DC conversion is the key point of research in the industry.
At present, aiming at a wide-range DC-DC implementation mode, most of the wide-range DC-DC implementation modes adopt the traditional switching modes of adding additional electronic switches (relays, semiconductor switch tubes and the like) and logic control circuits, realizing the wide range of output voltage through switching of different combinations, or changing the series-parallel connection of primary windings or secondary windings of a multi-winding transformer through switching of switches, changing the series-parallel connection of multi-path output through switching of switches, and realizing the wide range of output voltage by utilizing a diode voltage-multiplying rectification principle through switching of switches;
the switching unit logic device and the direct current end series-parallel connection mode realized by the corresponding control mode are additionally added, so that the reliability of the sampling and switching circuit is tested, and the switching switch logic device is added. The switching time is seriously influenced by the performance of the switching device, the shutdown time is relatively long, the dynamic performance is not good, and the influence of the stress of the switching device, the voltage surge suppression in the switching process and the like need to be considered when the overload protection of the parallel section series section is carried out. From the aspect of comprehensive cost performance, the traditional switching mode is not only complex but also relatively high in cost.
Disclosure of Invention
The invention aims to provide a DC-DC series-parallel topological structure, which can realize a series-parallel topological mode of a wide-range constant-power DC-DC output end.
The series-parallel topology includes:
the rectifier circuits comprise transformer secondary sides and full-bridge rectifier units which are connected with each other;
each resonant circuit corresponds to one rectifying circuit, and the wave-sending mode of each resonant circuit is controlled to change the state of different polarities in each rectifying circuit so as to realize DC-DC conversion.
Optionally, the plurality of rectifier circuits includes six sets of rectifier cells for continuous constant power output without interruption of operation.
Optionally, the connection manner of the six groups of rectification units includes:
the rectifier comprises a first rectifying unit, a second rectifying unit, a third rectifying unit, a fourth rectifying unit, a fifth rectifying unit and a sixth rectifying unit which are connected in parallel.
Optionally, the connection manner of the six groups of rectification units includes:
the first rectifying unit and the second rectifying unit are connected in series to form a first circuit; the third rectifying unit and the fourth rectifying unit are connected in series to form a second circuit; the fifth rectifying unit and the sixth rectifying unit are connected in series to form a third circuit; the first circuit, the second circuit and the third circuit are connected in parallel.
Optionally, the connection manner of the six groups of rectification units includes:
the first rectifying unit, the second rectifying unit and the third rectifying unit form a fourth circuit; the fourth rectifying unit, the fifth rectifying unit and the sixth rectifying unit are connected in series to form a fifth circuit; the fourth circuit and the fifth circuit are connected in parallel.
Optionally, the rectifying unit includes:
and two adjacent rectifier bridges share one bridge arm.
Optionally, the current stress borne by the diodes of the rectifier bridge changes correspondingly, and the selection type of the diodes is matched with the series-parallel topology structure, so that the diodes can work in a safe working area at the constant power output end.
Optionally, the resonant circuit includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube, where driving signals of the four switching tubes respectively correspond to a waveform, and the driving signals of the four switching tubes are correspondingly adjusted by continuously and respectively controlling the heights of the waveforms in a certain period.
Optionally, the series-parallel topology further comprises a filter circuit connected between the output terminals of the parallel rectification topology.
Optionally, the filter circuit comprises one or more filter capacitors.
Advantageous effects
The invention provides a DC-DC series-parallel connection topological structure, which comprises: the rectifier circuits comprise transformer secondary sides and full-bridge rectifier units which are connected with each other; and each resonant circuit corresponds to one rectifying circuit, and the wave-sending mode of each resonant circuit is controlled to change the different polarity states in each rectifying circuit so as to realize DC-DC conversion. The wide-range constant-power DC-DC converter can realize wide-range constant-power DC-DC without adding an additional switching circuit, saves a large number of switching devices and sampling circuits, avoids failure risks added by adding a large number of switching functional units, simplifies control logic and optimizes cost space.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and that other drawings can be obtained by those skilled in the art without inventive exercise.
FIG. 1 is a diagram of an LLC full-bridge rectification topology in the related art;
FIG. 2 is a simplified diagram of cell a of FIG. 1;
FIG. 3 is a schematic diagram of A, B polarity in control unit b by controlling unit a in a wave-sending manner;
FIG. 4 is a schematic diagram of a DC-DC series-parallel topology according to an embodiment of the present invention;
FIG. 5 is a simplified diagram of the connection of a plurality of rectifier circuits according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a full-bridge current flow under one mode of the present invention;
FIG. 7 is a full-bridge current flow diagram in another mode according to an embodiment of the present invention;
FIG. 8 is a full-bridge current flow diagram in another mode according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a simplified DC-DC series-parallel topology structure for the number of diodes of a DC-DC series-parallel topology structure according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a simplified post-rectification circuit according to the number of diodes according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a diagram of an LLC full-bridge rectification topology in the related art; FIG. 2 is a simplified diagram of unit b of FIG. 1; in the related art, as shown in fig. 1-2, the topology is divided into two parts, namely a unit a and a unit b, where the unit b includes a secondary side of a transformer and a full-bridge rectification unit. The polarities a and b can be realized by wave sending logic of the control unit a.
FIG. 3 is a schematic diagram of A, B polarity in control unit b by controlling unit a in a wave-sending manner;
as shown in fig. 3, the polarities of a and B in the unit B are controlled by the control unit a in a wave-transmitting manner, and at the same time, it is defined that a in 3-1 in fig. 3 is "B". cndot. "and a in 3-2 in fig. 3 is" B ". cndot." and B ". cndot.", "B". cndot. "" and "-", respectively exist at A B points in one cycle. Similarly, A, B polarity implementations in 6 groups of series-parallel combination units b can all realize different polarity state switching through the control unit a.
Aiming at the wide-range constant-power DC-DC, the series-parallel connection of internal functional logic units is realized without adding additional complex switching devices, and a series-parallel connection topological mode capable of realizing the wide-range constant-power DC-DC output end is designed on the basis of a full-bridge LLC topology.
The invention will be further described with reference to the following description and specific examples, taken in conjunction with the accompanying drawings:
FIG. 4 illustrates a DC-DC series-parallel topology of an embodiment of the present invention; FIG. 5 shows a simplified diagram of the connection of a plurality of rectifier circuits according to an embodiment of the present invention; as shown in fig. 4-5, the series-parallel topology includes:
a plurality of rectifier circuits 20, wherein each rectifier circuit comprises a transformer T1 secondary side and a full bridge rectifier unit connected to each other;
each resonant circuit 10 corresponds to a rectifying circuit, and the wave-sending mode of each resonant circuit 10 is controlled to change the state of different polarities in each rectifying circuit so as to realize DC-DC conversion.
This embodiment proposes a DC-DC series-parallel topology, which includes: a plurality of rectifier circuits 20, wherein each rectifier circuit comprises a transformer T1 secondary side and a full bridge rectifier unit connected to each other; each resonant circuit corresponds to a rectifying circuit, and the switching of different polarity states in each rectifying circuit is changed by controlling the wave-sending mode of each resonant circuit so as to realize DC-DC conversion. The power supply can work in a wide output range under the condition of no interruption, can realize wide-range constant-power DC-DC on the premise of not increasing an additional switching circuit, saves a large number of switching devices and sampling circuits, avoids failure risks added by increasing a large number of switching function units, simplifies control logic and optimizes cost space.
FIG. 6 is a diagram illustrating a full-bridge current flow under one mode of the present invention; referring to fig. 6, the rectifying circuits 20 include six groups of rectifying units, and the output of the power is continuously constant under the condition of uninterrupted operation. The connection mode of the six groups of rectifying units comprises the following steps: the rectifier circuit comprises a first rectifying unit 201, a second rectifying unit 202, a third rectifying unit 203, a fourth rectifying unit 204, a fifth rectifying unit 205 and a sixth rectifying unit 206 which are connected in parallel. When the parallel-connected mode-switching circuit operates in 6 groups of full-parallel modes, wherein (a) in fig. 6 is a full-bridge current flow diagram in a state of being marked as "+", ". is a full-bridge current flow diagram in a state of being marked as" - ", and (b) in fig. 6 is a full-bridge current flow diagram in a state of being marked as" + ".
FIG. 7 is a full-bridge current flow diagram in another mode according to an embodiment of the present invention; referring to fig. 7, the connection manner of the six groups of rectification units further includes:
the first rectifying unit 201 and the second rectifying unit 202 are connected in series to form a first circuit 1; the third rectifying unit 203 and the fourth rectifying unit 204 are connected in series to form a second circuit 2; the fifth rectifying unit 205 and the sixth rectifying unit 206 are connected in series to form a third circuit 3; the first circuit 2, the second circuit 2 and the third circuit 3 are connected in parallel. When operating in this mode, fig. 7 (a) is a full-bridge current flow diagram in the state of "prime" + "," is a full-bridge current flow diagram in the state of "prime" - ", and fig. 7 (b) is a full-bridge current flow diagram in the state of" prime "-", "is a full-bridge current flow diagram in the state of" plus ".
FIG. 8 is a full-bridge current flow diagram in another mode according to an embodiment of the present invention; referring to fig. 8, the connection manner of the six groups of rectification units further includes:
the first rectifying unit 201, the second rectifying unit 202 and the third rectifying unit 203 form a fourth circuit 4; the fourth rectifying unit 204, the fifth rectifying unit 205 and the sixth rectifying unit 206 are connected in series to form a fifth circuit 5; the fourth circuit 4 and the fifth circuit 5 are connected in parallel. In this mode, fig. 8(a) is a full-bridge current flow diagram in a state where the full-bridge current is marked as "+", ". is" - ", and fig. 8(b) is a full-bridge current flow diagram in a state where the full-bridge current is marked as" - ",". is "+".
Fig. 9 is a schematic structural diagram of a simplified DC-DC series-parallel topology structure for the number of diodes of a DC-DC series-parallel topology structure according to an embodiment of the present invention; fig. 10 is a schematic structural diagram of a simplified post-rectification circuit according to the number of diodes according to an embodiment of the present invention.
Referring to fig. 9 and 10, the number of diodes can be simplified to save the number of output rectifier diodes, which is optimized from 24 diodes to 14 diodes, thereby optimizing the cost, as shown in fig. 9 and 10. The optimized series-parallel topological structure has the same working process, the current stress borne by the diode of the rectifier bridge changes correspondingly, and the selection type of the diode is matched with the series-parallel topological structure, so that the diode works in a safe working area at a constant power output end.
Specifically, the rectifying unit includes:
and two adjacent rectifier bridges share one bridge arm.
Specifically, the resonant circuit 10 includes a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, and a fourth switch tube Q4, wherein the driving signals of the four switch tubes correspond to a waveform, and the driving signals of the four switch tubes are adjusted by controlling the waveform level continuously and respectively in a certain period.
Specifically, the series-parallel topology further comprises a filter circuit, and the filter circuit is connected between the output ends of the parallel rectification topology. The filter circuit may for example comprise one or more filter capacitors C.
The DC-DC series-parallel topological structure can realize wide-range constant-power DC-DC without adding an additional switching circuit, save a large number of switching devices and sampling circuits, avoid the failure risk added by adding a large number of switching functional units, simplify control logic and optimize cost space.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A DC-DC series-parallel topology, the series-parallel topology comprising:
the rectifier circuits comprise transformer secondary sides and full-bridge rectifier units which are connected with each other;
each resonant circuit corresponds to one rectifying circuit, and the wave-sending mode of each resonant circuit is controlled to change the state of different polarities in each rectifying circuit so as to realize DC-DC conversion.
2. The series-parallel topology of claim 1, wherein the plurality of rectification circuits comprises six groups of rectification units, with continuous constant power output without interruption of operation.
3. The series-parallel topology structure of claim 2, wherein the connection manner of the six groups of rectifying units comprises:
the rectifier comprises a first rectifying unit, a second rectifying unit, a third rectifying unit, a fourth rectifying unit, a fifth rectifying unit and a sixth rectifying unit which are connected in parallel.
4. The series-parallel topology structure of claim 2, wherein the connection manner of the six groups of rectifying units comprises:
the first rectifying unit and the second rectifying unit are connected in series to form a first circuit; the third rectifying unit and the fourth rectifying unit are connected in series to form a second circuit; the fifth rectifying unit and the sixth rectifying unit are connected in series to form a third circuit; the first circuit, the second circuit and the third circuit are connected in parallel.
5. The series-parallel topology structure of claim 3, wherein the connection manner of the six groups of rectifying units comprises:
the first rectifying unit, the second rectifying unit and the third rectifying unit form a fourth circuit; the fourth rectifying unit, the fifth rectifying unit and the sixth rectifying unit are connected in series to form a fifth circuit; the fourth circuit and the fifth circuit are connected in parallel.
6. The series-parallel topology of any of claims 1-5, wherein the rectification unit comprises:
and two adjacent rectifier bridges share one bridge arm.
7. The series-parallel topology according to claim 6, wherein the diodes of the rectifier bridge are subjected to a corresponding change in current stress, and the diodes are selected to match the series-parallel topology such that they operate in a safe operating region at the constant power output.
8. The series-parallel topology structure of claim 7, wherein the resonant circuit comprises a first switch tube, a second switch tube, a third switch tube and a fourth switch tube, the driving signals of the four switch tubes correspond to a waveform, and the driving signals of the four switch tubes are adjusted correspondingly by controlling the height of the waveform continuously and respectively in a certain period.
9. The series-parallel topology of claim 8, further comprising a filter circuit connected between outputs of the parallel rectification topology.
10. The series-parallel topology of claim 9, wherein the filter circuit comprises one or more filter capacitors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111370427.7A CN114244121A (en) | 2021-11-18 | 2021-11-18 | DC-DC series-parallel topological structure |
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| CN202111370427.7A CN114244121A (en) | 2021-11-18 | 2021-11-18 | DC-DC series-parallel topological structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030021125A1 (en) * | 2001-07-16 | 2003-01-30 | Alfred-Christophe Rufer | Electrical power supply suitable in particular for DC plasma processing |
| CN103391005A (en) * | 2013-07-24 | 2013-11-13 | 深圳市航天新源科技有限公司 | Power-extensible variable-structure converter |
| CN110138242A (en) * | 2019-05-23 | 2019-08-16 | 北京动力源科技股份有限公司 | A kind of series rectifier topological structure and a kind of LLC resonance circuit |
| CN110798073A (en) * | 2019-10-22 | 2020-02-14 | 深圳航天科技创新研究院 | Wide voltage range output current feed converter |
| CN113595415A (en) * | 2021-06-15 | 2021-11-02 | 袁源兰 | AC/DC resonant converter |
-
2021
- 2021-11-18 CN CN202111370427.7A patent/CN114244121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030021125A1 (en) * | 2001-07-16 | 2003-01-30 | Alfred-Christophe Rufer | Electrical power supply suitable in particular for DC plasma processing |
| CN103391005A (en) * | 2013-07-24 | 2013-11-13 | 深圳市航天新源科技有限公司 | Power-extensible variable-structure converter |
| CN110138242A (en) * | 2019-05-23 | 2019-08-16 | 北京动力源科技股份有限公司 | A kind of series rectifier topological structure and a kind of LLC resonance circuit |
| CN110798073A (en) * | 2019-10-22 | 2020-02-14 | 深圳航天科技创新研究院 | Wide voltage range output current feed converter |
| CN113595415A (en) * | 2021-06-15 | 2021-11-02 | 袁源兰 | AC/DC resonant converter |
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