CN111817368A - Multi-module series-parallel resonance high-voltage charging device - Google Patents

Multi-module series-parallel resonance high-voltage charging device Download PDF

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Publication number
CN111817368A
CN111817368A CN202010564831.7A CN202010564831A CN111817368A CN 111817368 A CN111817368 A CN 111817368A CN 202010564831 A CN202010564831 A CN 202010564831A CN 111817368 A CN111817368 A CN 111817368A
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China
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module
output
series
voltage
input
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Pending
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CN202010564831.7A
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Chinese (zh)
Inventor
郭灯华
关晓存
管少华
史铎林
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Naval University of Engineering PLA
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Naval University of Engineering PLA
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Priority to CN202010564831.7A priority Critical patent/CN111817368A/en
Publication of CN111817368A publication Critical patent/CN111817368A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0074—Plural converter units whose inputs are connected in series
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration

Abstract

The invention discloses a multi-module series-parallel resonance high-voltage charging device which comprises an input voltage division module, a plurality of module components and an output voltage module, wherein the input voltage division module comprises a plurality of supporting capacitors, and the output voltage module comprises n filter capacitors; the device has the advantages that multiple groups of low-power LC charging modules are connected in parallel and cascaded, so that input voltage and power are improved through serial and parallel connection of the module units, each module unit can work in a serial resonance state of dozens of kHz, the volume and weight of a passive device are greatly reduced, and through the designed serial and parallel connection topology, the device greatly simplifies the requirements of voltage-sharing and current-sharing control and can adopt open-loop control; in addition, the module unit adopts a multiplexing technology, so that input and output current harmonics are reduced, the volume weight of the direct current supporting capacitor and the filter capacitor is greatly reduced, and the power density of the whole device is improved.

Description

Multi-module series-parallel resonance high-voltage charging device
Technical Field
The invention belongs to the technical field of power electronics, and particularly relates to a multi-module series-parallel resonance high-voltage charging device.
Background
The capacitor energy storage is widely applied to the fields of military, industry, medical treatment and daily life, and the capacitor types include electrolytic capacitors, super capacitors, metal film capacitors and the like. The charging device is an important device used with a capacitor, and in some application occasions such as electromagnetic emission, laser ignition, a pulse strong magnetic field and the like, the capacitor has higher voltage and higher charging power, and higher requirements are put forward on the voltage and current grade of the charging device. The early high-voltage charging device mainly rectifies and filters the power frequency voltage through a boosting transformer, or obtains high voltage by adopting voltage-doubling rectification after boosting, and has the defects of large transformer volume, large ripple, incapability of closed-loop regulation and the like; the semi-control device is adopted at the beginning of the thyristor control stage, closed-loop regulation can be realized, and the defects of large volume, low efficiency, large harmonic wave and the like still exist; in recent years, with the maturity of fully-controlled devices, the era of switching power supplies begins to be entered, and at present, the charging device has the characteristics of high efficiency, small volume, light weight, convenience in design and manufacture and the like.
In high-voltage and high-power application occasions, the conventional charging device mostly adopts a high-power IGBT as a main control device, and in the aspect of non-isolation technology, the voltage is regulated by the IGBT and an inductor, and typical topologies comprise buck, boost and the like; in the aspect of isolation technology, voltage regulation is realized by an IGBT and a transformer, and a typical topology comprises H-bridge inversion and the like. The high-power IGBT has higher cost, high use requirement and low switching frequency (generally 1kHz), so that the volume and the weight of a passive device of the device are larger.
Disclosure of Invention
The invention aims to solve the technical defects and provide a multi-module series-parallel resonance high-voltage charging device with high switching frequency and low use cost.
In order to achieve the purpose, the multi-module series-parallel resonance high-voltage charging device comprises an input voltage division module, a plurality of module assemblies and an output voltage module, wherein the input voltage division module comprises a plurality of supporting capacitors, the output voltage module comprises n filter capacitors, and the number of the module assemblies is equal to that of the supporting capacitors and is connected in a one-to-one correspondence manner;
one end of each support capacitor is connected with the input anode after being connected in series, and the other end of each support capacitor is connected with the input cathode after being connected in series; each module component comprises a plurality of module units, and the input sides of the module units are connected in parallel and then connected in parallel with corresponding supporting capacitors; each module unit of each module assembly is provided with n output levels which are n +1 output endpoints, the n +1 output endpoints of all the module units of each module assembly are connected in parallel to form n +1 total output endpoints, and the n output levels of the same module unit are in a series connection relationship; one end of the n filter capacitors is connected with the output anode after being connected in series, the other end of the n filter capacitors is connected with the output cathode after being connected in series, and the n +1 total output ends of each module component are connected with the n +1 end points of the filter capacitors after being connected in series in a one-to-one correspondence mode.
Furthermore, each module unit is an LC series resonance circuit and comprises an inversion topology, a resonance circuit and an output unit, the inversion topology is an H-bridge topology formed by four switching devices, the resonance circuit comprises a resonance capacitor, a resonance inductor and a transformer which are sequentially connected in series, the positive pole of the input side of the H-bridge topology is connected to one end of the corresponding support capacitor, the negative pole of the input side of the H-bridge topology is connected to the other end of the corresponding support capacitor, the output side of the H-bridge topology is connected with the input end of the resonance circuit, and n windings output by the transformer are rectified to output n output levels which are n +1 output terminals.
Further, the switching device is an IGBT or a MOSFET.
Compared with the prior art, the invention has the following beneficial effects: according to the multi-module series-parallel resonance high-voltage charging device, a plurality of groups of low-power LC charging modules are connected in parallel and cascaded, firstly, input voltage and power are improved through series-parallel connection of the module units, secondly, each module unit can work in a series resonance state of dozens of kHz, the volume and weight of a passive device are greatly reduced, thirdly, through a designed series-parallel topology, the device greatly simplifies the requirements of voltage-sharing and current-sharing control, and open-loop control can be adopted; in addition, the module unit adopts a multiplexing technology, so that input and output current harmonics are reduced, the volume weight of the direct current supporting capacitor and the filter capacitor is greatly reduced, and the power density of the whole device is improved.
Drawings
FIG. 1 is a topological diagram of a multi-module series-parallel resonant high-voltage charging device according to the present invention;
FIG. 2 is an electrical diagram of a module unit of FIG. 1;
FIG. 3 is a graph of IGBT drive signals and transformer primary side current;
fig. 4 is a diagram of parallel 2-string connections of modules 2.
Detailed Description
The present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, specific examples and comparative examples, which are not intended to limit the invention.
As shown in fig. 1, the multi-module series-parallel resonance high-voltage charging device comprises an input voltage division module, a plurality of module assemblies and an output voltage module, wherein the input voltage division module comprises a plurality of supporting capacitors, the output voltage module comprises n filter capacitors, and the number of the module assemblies is equal to that of the supporting capacitors and is in one-to-one correspondence connection. One end of the support capacitor is connected with the input anode 101 after being connected in series, and the other end of the support capacitor is connected with the input cathode 102 after being connected in series, so that the input voltage is divided, and the input voltage grade of each module assembly is lower. Each module assembly comprises a plurality of module units, wherein input sides of the module units are connected in parallel and then connected in parallel with corresponding supporting capacitors, for example, the input sides of the module unit 1_1, the module unit 1_2, the module unit … … and the module unit 1_ N are connected in parallel through a first lead 103 and a second lead 104, the input sides of the module units are connected in parallel and then share a first supporting capacitor 201, and similarly, the input sides of the module unit 2_1, the module unit 2_2, the module unit … … and the module unit 2_ N are connected in parallel and then share a second supporting capacitor 202 to meet the level of input voltage; each module unit of each module assembly is provided with n output levels (namely the number of the output levels of each module unit is equal to the number of the filter capacitors), which are n +1 output end points, the n +1 output end points of all the module units of each module assembly are connected in parallel to form n +1 total output end points, and the n output levels of the same module unit are in series connection; one end of the n filter capacitors is connected with the output anode 110 after being connected in series, the other end of the n filter capacitors is connected with the output cathode 111 after being connected in series, a higher output voltage grade is formed, n +1 total output ends of each module assembly are connected with n +1 end points of the filter capacitors after being connected in series in a one-to-one correspondence mode, namely the output of all the module assemblies shares the n filter capacitors which are connected in series. For example, each module unit has four output levels to form five output terminals, the first filter capacitor 401, the second filter capacitor 402, the third filter capacitor 403, and the fourth filter capacitor 404 are connected in series to form five terminals, the output terminal 104, the output terminal 106, the output terminal 107, the output terminal 108, and the output terminal 109 of the module unit 1_1 are connected in parallel with the output terminals of all other module units of the module assembly, and finally are respectively connected to the five terminals 110, 112, 113, 114, and 111 of the four filter capacitors.
As shown in fig. 2, each module unit is an LC series resonant circuit, and includes an inverter topology, a resonant circuit, and an output unit, where the inverter topology is an H-bridge topology composed of four switching devices (i.e., a switching device 203, a switching device 204, a switching device 205, and a switching device 206), the resonant circuit includes a resonant capacitor 207, a resonant inductor 208, and a transformer 209 connected in series in sequence, an input-side anode 120 of the H-bridge topology is connected to one end of a corresponding supporting capacitor, an input-side cathode 121 of the H-bridge topology is connected to the other end of the corresponding supporting capacitor, an output side of the H-bridge topology is connected to an input end of the resonant circuit, the transformer 209 outputs four windings, after rectification, to output four output levels, which are five output terminals (five output terminals are an output terminal 122, an output terminal 123, an output terminal 124, an output terminal 125, and, The output terminal 123, the output terminal 124, the output terminal 125, and the output terminal 126 correspond to the output terminal 104, the output terminal 106, the output terminal 107, the output terminal 108, and the output terminal 109 in fig. 1, respectively. When the switching frequency is less than half of the natural resonant frequency, the H-bridge switching device works in a soft switching mode, and the output of the whole device is in a current mode, so that the device is particularly suitable for a capacitive load. In this embodiment, the switching device is an IGBT or a MOSFET.
The working mode of the multi-module series-parallel resonance high-voltage charging device is that the input voltage is reduced through the input anode 101 and the input cathode 102 of the figure 1 to the support capacitor and the like, and the H-bridge inverter topology of each module unit starts to act during working. For example, if the switching devices 203 and 206 in fig. 2 are turned on, the gate signals thereof correspond to the first rectangular shape 301 in fig. 3, and the switching devices 204 and 205 are turned off, the current in fig. 2 forms a loop through the input side positive electrode 120, the switching device 203, the resonant capacitor 207, the resonant inductor 208, the primary side of the transformer 209, the switching device 206, and the input side negative electrode 121, and the waveform of the current is shown as a first curve 303 in fig. 3; when the switching devices 204, 205 of fig. 2 are turned on and their gate signals correspond to the second rectangular shape 302 of fig. 3, and the switching devices 203, 206 are turned off, the current in fig. 2 loops through the input side positive electrode 120, the switching device 204, the primary side of the transformer 209, the resonant inductor 208, the resonant capacitor 207, the switching device 205, and the input side negative electrode 121, and the current waveform is shown by the second curve 304 of fig. 3, thus transferring energy to the secondary side of the transformer and thus to the output side of the entire apparatus.
Fig. 4 specifically illustrates an example of a 2-parallel 2-string charging device. An input positive electrode 101, an input negative electrode 102, an output positive electrode 110, and an output negative electrode 111. The first support capacitor 201 and the second support capacitor 202 are connected in series to divide the higher dc input voltage into two lower voltages, which are provided to the following modules. The input sides of the module unit 1_1 and the module unit 1_2 are connected in parallel and share the first supporting capacitor 201; the input sides of the module unit 2_1 and the module unit 2_2 are connected in parallel and share the second supporting capacitor 202; the output sides of the module unit 1_1, the module unit 1_2, the module unit 2_1 and the module unit 2_2 are respectively provided with 4 sets of windings, 4 sets of direct current voltages are respectively output through a rectifier bridge, and the direct current voltages of each module are connected in series to form high voltage required by output; all the module units have the first group of output voltages connected in parallel, share a first filter capacitor 401, the second group of output voltages connected in parallel, share a second filter capacitor 402, the third group of output voltages connected in parallel, share a third filter capacitor 403, and the fourth group of output voltages connected in parallel, share a fourth filter capacitor 404.
By adopting the circuit in the topological connection form, the input side and the output side can automatically realize the parallel current sharing and the series voltage sharing of open-loop control, a feedback control strategy is not needed, and the software cost required by detection hardware and control is greatly simplified. The self-current-sharing and voltage-sharing principle of the whole circuit is that according to the LC resonance charging principle, the expression of output current is
Io＝8kfsUinCr
Wherein, IoIs a module outputCurrent, k is transformer transformation ratio, fsIs H-bridge switching frequency, UinIs the DC voltage at the input side of the module H-bridge inverter circuit, CrIs the resonant capacitance value. When all modules CrAnd fsIn agreement, each module output current is proportional to the module input voltage. Therefore, the output current of the parallel templates is balanced due to the common supporting capacitor, and the output power of all the modules is consistent due to the parallel connection of the outputs of all the modules, so that the input current of the parallel modules is also balanced.
Because the output current is proportional to the input voltage, namely the power of the module is proportional to the input voltage, when the voltage of the input side is higher, the power of the module connected in series at the input side is correspondingly increased, so that the discharge of the capacitor at the input side is increased, and the voltage of the capacitor is reduced; on the other hand, if the input side voltage is low, the discharge is reduced, and the capacitor voltage is increased. Therefore, the input sides of the modules connected in series can realize self-voltage-sharing. For example, in fig. 4, if the voltage of the first supporting capacitor 201 is higher than that of the second supporting capacitor 202, the power of the module unit 1_1 and the module unit 1_2 is higher than that of the module unit 2_1 and the module unit 2_2, and the discharging current of the first supporting capacitor 201 is larger than that of the second supporting capacitor 202, so that the voltage of the first supporting capacitor 201 decreases and the voltage of the second supporting capacitor 202 increases, that is, the voltages of the first supporting capacitor 201 and the second supporting capacitor 202 are automatically equalized to be equal, and no special voltage detection and voltage equalization control measures are required.
The module output side can also realize series voltage equalization. For example, in fig. 4, the turns ratios of 4 sets of windings on the secondary side of the transformer are equal, and 4 levels output by each module are opposite, so that series voltage-sharing of output is realized.
It can be seen that after the series-parallel connection topological structure is adopted, as long as the parameters of each module are the same and the inversion frequency of the H bridge is the same, the self-balancing of the series voltage of the input side and the output side and the self-balancing of the parallel current of the modules can be realized without an additional feedback control strategy. Furthermore, the input sides of the module unit 1_1 and the module unit 1_2, and the input sides of the module unit 2_1 and the module unit 2_2 share the direct current supporting capacitor respectively, and all the modules share the output filter capacitor.
According to the multi-module series-parallel resonance high-voltage charging device, a plurality of groups of low-power LC charging modules are connected in parallel and cascaded, firstly, input voltage and power are improved through series-parallel connection of the module units, secondly, each module unit can work in a series resonance state of dozens of kHz, the volume and weight of a passive device are greatly reduced, thirdly, through a designed series-parallel topology, the device greatly simplifies the requirements of voltage-sharing and current-sharing control, and open-loop control can be adopted; in addition, the module unit adopts a multiplexing technology, so that input and output current harmonics are reduced, the volume weight of the direct current supporting capacitor and the filter capacitor is greatly reduced, and the power density of the whole device is improved.

Claims (3)

1. The utility model provides a multimode series-parallel resonance high voltage charging device which characterized in that: the voltage divider comprises an input voltage dividing module, a plurality of module components and an output voltage module, wherein the input voltage dividing module comprises a plurality of supporting capacitors, the output voltage module comprises n filter capacitors, and the number of the module components is equal to that of the supporting capacitors and is connected in a one-to-one correspondence manner;
one end of each support capacitor is connected with the input anode after being connected in series, and the other end of each support capacitor is connected with the input cathode after being connected in series; each module component comprises a plurality of module units, and the input sides of the module units are connected in parallel and then connected in parallel with corresponding supporting capacitors; each module unit of each module assembly is provided with n output levels which are n +1 output endpoints, the n +1 output endpoints of all the module units of each module assembly are connected in parallel to form n +1 total output endpoints, and the n output levels of the same module unit are in a series connection relationship; one end of the n filter capacitors is connected with the output anode after being connected in series, the other end of the n filter capacitors is connected with the output cathode after being connected in series, and the n +1 total output ends of each module component are connected with the n +1 end points of the filter capacitors after being connected in series in a one-to-one correspondence mode.
2. The multi-module series-parallel resonant high-voltage charging device of claim 1, wherein: each module unit is an LC series resonance circuit, including contravariant topology, resonant circuit and output unit, the contravariant topology is the H bridge topology of compriseing four switching device, resonant circuit is including the resonance capacitance, resonance inductance and the transformer that establish ties in proper order, the input side positive pole of H bridge topology is connected in the one end that corresponds support capacitance, the other end that corresponds support capacitance is connected to the input side negative pole of H bridge topology, H bridge topology output side links to each other with resonant circuit's input, n output level of transformer output n winding after the rectification total n +1 output terminal.
3. The multi-module series-parallel resonant high-voltage charging device of claim 1, wherein: the switching device is an IGBT or MOSFET.
CN202010564831.7A 2020-06-19 2020-06-19 Multi-module series-parallel resonance high-voltage charging device Pending CN111817368A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114069694A (en) * 2021-11-02 2022-02-18 北京动力源科技股份有限公司 Method for reducing loop inductance of multi-phase variable frequency/fixed frequency parallel multi-module unit
CN116346034A (en) * 2023-03-19 2023-06-27 成都科创时空科技有限公司 Resonance device suitable for miniaturized multistage electromagnetic gun and operation method thereof

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN102355038A (en) * 2011-09-29 2012-02-15 株洲市达能科技有限公司 High voltage direct current charger
WO2013046536A1 (en) * 2011-09-28 2013-04-04 株式会社アドバンテスト Wireless power receiving device, wireless power supplying device, and wireless power supplying system
CN106301033A (en) * 2016-08-29 2017-01-04 中国人民解放军海军工程大学 The aviation quiet variable power source device of alternating current-direct current timesharing output and control method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013046536A1 (en) * 2011-09-28 2013-04-04 株式会社アドバンテスト Wireless power receiving device, wireless power supplying device, and wireless power supplying system
CN102355038A (en) * 2011-09-29 2012-02-15 株洲市达能科技有限公司 High voltage direct current charger
CN106301033A (en) * 2016-08-29 2017-01-04 中国人民解放军海军工程大学 The aviation quiet variable power source device of alternating current-direct current timesharing output and control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114069694A (en) * 2021-11-02 2022-02-18 北京动力源科技股份有限公司 Method for reducing loop inductance of multi-phase variable frequency/fixed frequency parallel multi-module unit
CN114069694B (en) * 2021-11-02 2024-03-22 北京动力源科技股份有限公司 Method for reducing loop inductance of multiphase variable frequency/fixed frequency parallel multi-module unit
CN116346034A (en) * 2023-03-19 2023-06-27 成都科创时空科技有限公司 Resonance device suitable for miniaturized multistage electromagnetic gun and operation method thereof
CN116346034B (en) * 2023-03-19 2024-02-09 成都科创时空科技有限公司 Resonance device suitable for miniaturized multistage electromagnetic gun and operation method thereof

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Application publication date: 20201023