CN110034688A - A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel - Google Patents
A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel Download PDFInfo
- Publication number
- CN110034688A CN110034688A CN201910317082.5A CN201910317082A CN110034688A CN 110034688 A CN110034688 A CN 110034688A CN 201910317082 A CN201910317082 A CN 201910317082A CN 110034688 A CN110034688 A CN 110034688A
- Authority
- CN
- China
- Prior art keywords
- module
- demagnetization
- output
- naval vessel
- common mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac 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
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
Abstract
The present invention relates to a kind of demagnetization power supply devices and demagnetization signal creating method for naval vessel.The device includes LLC conversion module, H4 inverter module, LCL filter module and common mode inhibition module, the LLC conversion module, the H4 inverter module, the LCL filter module and the common mode inhibition module are sequentially connected electrically, the input terminal of the LLC conversion module accesses DC voltage, and the output end of the common mode inhibition module exports demagnetization sine wave.Technical solution provided by the invention can obtain that form factor is more preferable, the higher demagnetization sine wave of precision, and reduce the influence to sensitive equipment on naval vessel.
Description
Technical field
A kind of believe the present invention relates to demagnetization power technique fields more particularly to for the demagnetization power supply device on naval vessel and demagnetization
Number generation method.
Background technique
It either newly makes, has still used the naval vessel of certain time, itself all has certain magnetism, in order to defend water
Middle magnetism weapon, such as the attack of Magnetic Induction submarine mine, or avoid being found by magnetic detection instrument, to ensure the navigation peace on naval vessel
Entirely, it needs to carry out demagnetization processing to naval vessel, to weaken the magnetic field strength on naval vessel and improve distribution character.Reduce the magnetic on naval vessel
, it is necessary in addition plus a magnetic field reversed with ship's magnetism, with this opposing magnetic field compensation counteracting ship's magnetism.
Opposing magnetic field can be generated by demagnetization power supply, and currently used demagnetization power supply is mainly two-level configuration.By previous grading
Row high-frequency isolation exports DC voltage by diode rectifier bridge, and adjusts output electric current by adjusting DC voltage size,
The low frequency sinusoidal electric current of change in polarity is provided by the reversing unit of rear stage.But due to rectifier bridge diode and reversing unit
Itself there is a fixed tube voltage drop, therefore when existing demagnetization power supply has the voltage near output no-voltage, waveform is not quasi- enough
Really, the larger problem of error.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of demagnetization power supply device for naval vessel and demagnetization signal generates
Method.
On the one hand, the present invention provides a kind of demagnetization power supply device for naval vessel, which includes LLC conversion module, H4
Inverter module, LCL filter module and common mode inhibition module, the LLC conversion module, the H4 inverter module, LCL filtering
Module and the common mode inhibition module are sequentially connected electrically, and the input terminal of the LLC conversion module accesses DC voltage, the common mode
The output end of suppression module exports demagnetization sine wave.
Beneficial effect provided by the present invention for the demagnetization power supply device on naval vessel is to be isolated by LLC conversion module defeated
Fixed DC voltage out, by adjusting voltage official post its output single-phase low frequency sinusoidal between two bridge arms of H4 inverter module
Wave, LCL filter module can effectively filter out ripple, and it is dry that the high frequency in power supply device output signal can be effectively suppressed in common mode inhibition module
Signal is disturbed, while realizing two functions of decompression and commutation, not only available form factor is more preferable, the higher demagnetization of precision is sinusoidal
Wave can also effectively reduce the influence to sensitive equipments such as sonars on naval vessel.
On the other hand, the present invention provides a kind of demagnetization signal creating method for naval vessel, using being used for as described above
The demagnetization power supply device on naval vessel, this method comprises the following steps:
The first output end and second output terminal of H4 inverter module are adjusted according to the demagnetization sine wave feedback that exports in real time
Voltage difference.
The ripple in H4 inverter module output signal is filtered out by LCL filter module.
Inhibit the high-frequency interferencing signal in LCL filter module output signal by common mode inhibition module, obtains demagnetization signal.
Beneficial effect provided by the present invention for the demagnetization signal creating method on naval vessel is, based on the demagnetization exported in real time
Sine wave, between the first output end of H4 inverter module and second output terminal, i.e. voltage difference between two bridge arms carries out dynamic
Feedback regulation can make in various voltage ranges, and the exportable good low-frequency sine of form factor of H4 inverter module passes through
After LCL filter module and common mode inhibition module filter out ripple and high fdrequency component, the higher demagnetization of accuracy of waveform can get
Sine wave to carry out accurate demagnetization for naval vessel, and reduces the influence to other equipment on naval vessel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the demagnetization power supply device for naval vessel of the embodiment of the present invention；
Fig. 2 is the flow diagram of the demagnetization signal creating method for naval vessel of the embodiment of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
A kind of demagnetization power supply device for naval vessel provided in an embodiment of the present invention includes LLC conversion module, H4 inversion mould
Block, LCL filter module and common mode inhibition module, the LLC conversion module, the H4 inverter module, the LCL filter module and
The common mode inhibition module is sequentially connected electrically, and the input terminal of the LLC conversion module accesses DC voltage, the common mode inhibition mould
The output end of block exports demagnetization sine wave.
In the present embodiment, the fixed DC voltage of output is isolated by LLC (resonance circuit) conversion module, passes through adjusting
Voltage official post its output single-phase low-frequency sine between two bridge arms of H4 inverter module, LCL filter module can effectively filter out line
Wave, the high-frequency interferencing signal in power supply device output signal can be effectively suppressed in common mode inhibition module, while realizing decompression and commutation
Two functions, not only available form factor is more preferable, the higher demagnetization sine wave of precision, can also effectively reduce to sonar on naval vessel
The influence of equal sensitive equipments.
Preferably, the H4 inverter module includes four power cells, the company of the first power cell and third power cell
Place is met as the first input end of the H4 inverter module, the junction of the second power cell and the 4th power cell is that the H4 is inverse
Become the second input terminal of module, the junction of the first power cell and the second power cell is first defeated for the H4 inverter module
The junction of outlet, third power cell and the 4th power cell is the second output terminal of the H4 inverter module, and the H4 is inverse
The first input end and the second input terminal for becoming module are electrically connected with two output ends of the LLC conversion module respectively, the H4
The first output end and second output terminal of inverter module are electrically connected with two input terminals of the LCL filter module respectively.
Specifically, the first power cell of H4 inverter module is the Q1 in Fig. 1, and the second power cell is Q2, third function
Rate unit be Q3, the 4th power cell be Q4, can for IGBT (Insulated Gate Bipolar Transistor, absolutely
Edge grid bipolar junction transistor) or MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor,
Metal-Oxide Semiconductor field effect transistor).
H4 inverter module is arranged due to including 4 power cells, and in " H " type, and every two power cell is located at
On two bridge arms, therefore referred to as H4 inverter module.A point can be considered that its first output end, B point can be considered its second output terminal, and C point can
It is considered as its first input end, D point can be considered its second input terminal.Pressure difference between A point and B point can be conditioned.
In the preferred embodiment, in all voltage ranges, the pressure difference between A point and B point is adjusted, so as to
The good sine voltage of final output form factor.
Preferably, the LCL filter module includes the first inductance, capacitor and the second inductance being sequentially connected electrically, and described
One end of one inductance is electrically connected as the first output end of the first input end and the H4 inverter module of the LCL filter module
It connecing, the junction of one end of the other end and capacitor of first inductance is the first output end of the LCL filter module,
The junction of one end of the other end of the capacitor and second inductance is the second output terminal of the LCL filter module, institute
The other end of the second inductance is stated as the second input terminal of the LCL filter module and the second output terminal of the H4 inverter module
Electrical connection, the first output end and second output terminal of the LCL filter module, i.e. capacitor both ends respectively with the common mode inhibition mould
Block electrical connection.
Specifically, the first inductance in LCL filter module is the L1 in Fig. 1, capacitor C1, and the second inductance is L2, and three
Person constitute low pass LCL filter module can will H4 inverter module output end, that is, A point and B point output modulating wave in
Ripple effectively filters out, and ripple when especially exporting low-voltage can be effectively filtered out, and guarantees the accuracy of signal.
Preferably, the common mode inhibition module is common mode inductance, and the input terminal of the common mode inductance is filtered with the LCL respectively
The first output end and second output terminal of wave module are electrically connected, and the output end of the common mode inductance exports the demagnetization sine wave.
Specifically, common mode inductance is the L3 in Fig. 1, can effectively inhibit the height in the signal through LCL filter module
Frequency interference signal, and output low frequency demagnetization sine wave u0。
In the preferred embodiment, by the effect of common mode inductance, it can reduce the common-mode voltage in power output signal,
Reduce influence of the demagnetization sine wave of output to naval vessel sonar, communication equipment or other sensitive equipments.
Preferably, which further includes rectifier, and the input terminal of the rectifier accesses alternating voltage, the rectifier
Output end is electrically connected with the input terminal of the LLC conversion module.
Specifically, LLC conversion module is accessed, i.e. the signal source of U1 in Fig. 1 can directly be DC voltage, or
The DC voltage that alternating voltage is converted to by rectified device, that is to say, that inputted if it is AC power source, pass through rectifier
It is converted.To keep the setting of demagnetization power supply device more flexible, meet more practical application scenes.
Preferably, the LLC conversion module is LLC high-frequency converter.
Specifically, LLC high-frequency converter volume is relatively small, can further reduce the volume of demagnetization power supply device, make
Its is more portable.In addition, can be designed as work in very efficient work since LLC high-frequency converter only plays buffer action
Make on point, design efficiency theoretical value can be effectively isolated the fixed DC voltage of output up to 98% or more.
A kind of demagnetization signal creating method for naval vessel provided in an embodiment of the present invention, using as described above for warship
The demagnetization power supply device of ship, as shown in Fig. 2, this method comprises the following steps:
The first output end and second output terminal of H4 inverter module are adjusted according to the demagnetization sine wave feedback that exports in real time
Voltage difference.
The ripple in H4 inverter module output signal is filtered out by LCL filter module.
Inhibit the high-frequency interferencing signal in LCL filter module output signal by common mode inhibition module, obtains demagnetization signal.
In the present embodiment, defeated to the first output end of H4 inverter module and second based on the demagnetization sine wave exported in real time
Between outlet, i.e. voltage difference between two bridge arms carries out dynamical feedback adjusting, can make in various voltage ranges, H4 inversion mould
The exportable good low-frequency sine of form factor of block, by LCL filter module and common mode inhibition module to ripple and high frequency
After component is filtered out, the higher demagnetization sine wave of accuracy of waveform can get, to carry out accurate demagnetization, and reduction pair for naval vessel
The influence of other equipment on naval vessel.
Preferably, the specific implementation packet of the voltage difference of first output end for adjusting H4 inverter module and second output terminal
It includes:
0.5+K1 is set by the complementary duty duty ratio of the first power cell of H4 inverter module and the second power cell,
0.5-K1 is set by the complementary duty duty ratio of the third power cell of H4 inverter module and the 4th power cell.
Specifically, 0≤K1≤0.5, enabling the period is Ts, and for K1 takes 0.1, in one cycle, (0-0.6) Ts stage is controlled
The work of the first power cell is made, the second power cell does not work at this time, the work of (0.6-1) Ts the second power cell of stage control,
The first power cell does not work at this time, the work of (0-0.4) Ts stage control third power cell, at this time the 4th power cell not work
Make, the work of the 4th power cell of (0.4-1) Ts stage control, third power cell does not work at this time.
In the preferred embodiment, using the demagnetization sine wave that exports in real time as feedback signal, it is each to adjust H4 inverter module
The complementary duty duty ratio of power cell, electricity when for needing to export the voltage in any range, especially near no-voltage
When pressure, precision and the extraordinary low frequency sinusoidal output of the linearity can get.
Preferably, according to the demagnetization sine wave exported in real time, the size of K1 is controlled by pi regulator.
Specifically, it is realized based on output demagnetization sine wave in real time by the proportional component and integral element of PI controller to H4
The feedback control of inverter module power cell duty cycle parameters, not only efficiently, and also it is accurate.
After tested, the demagnetization signal generated using technical scheme, system whole efficiency are improved than conventional method
The low-frequency sine coefficient as demagnetization signal of 2%-3%, output are preferable, effectively overcome demagnetization power supply in the prior art
When exporting the voltage near no-voltage, waveform is not accurate enough, the larger problem of error.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", specific examples or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of demagnetization power supply device for naval vessel, which is characterized in that including LLC conversion module, H4 inverter module, LCL filter
Wave module and common mode inhibition module, the LLC conversion module, the H4 inverter module, the LCL filter module and the common mode
Suppression module is sequentially connected electrically, and the input terminal of the LLC conversion module accesses DC voltage, the output of the common mode inhibition module
End output demagnetization sine wave.
2. the demagnetization power supply device according to claim 1 for naval vessel, which is characterized in that the H4 inverter module includes
The junction of four power cells, the first power cell and third power cell is the first input end of the H4 inverter module,
The junction of second power cell and the 4th power cell be the H4 inverter module the second input terminal, the first power cell with
The junction of second power cell is the first output end of the H4 inverter module, third power cell and the 4th power cell
Junction is the second output terminal of the H4 inverter module, the first input end of the H4 inverter module and the second input terminal difference
It is electrically connected with two output ends of the LLC conversion module, the first output end and second output terminal point of the H4 inverter module
It is not electrically connected with two input terminals of the LCL filter module.
3. the demagnetization power supply device according to claim 2 for naval vessel, which is characterized in that the power cell is IGBT
Or MOSFET.
4. the demagnetization power supply device according to claim 2 for naval vessel, which is characterized in that the LCL filter module packet
The first inductance, capacitor and the second inductance being sequentially connected electrically are included, one end of first inductance is as the LCL filter module
First input end is electrically connected with the first output end of the H4 inverter module, the other end and the capacitor of first inductance
The junction of one end is the first output end of the LCL filter module, the other end of the capacitor and the one of second inductance
The junction at end is the second output terminal of the LCL filter module, and the other end of second inductance filters mould as the LCL
Second input terminal of block is electrically connected with the second output terminal of the H4 inverter module, the first output end of the LCL filter module
It is electrically connected respectively with the common mode inhibition module with second output terminal.
5. the demagnetization power supply device according to claim 4 for naval vessel, which is characterized in that the common mode inhibition module is
Common mode inductance, the input terminal of the common mode inductance are electric with the first output end of the LCL filter module and second output terminal respectively
The output end of connection, the common mode inductance exports the demagnetization sine wave.
6. the demagnetization power supply device according to any one of claims 1 to 5 for naval vessel, which is characterized in that further include whole
Device is flowed, the input terminal of the rectifier accesses alternating voltage, the input of the output end of the rectifier and the LLC conversion module
End electrical connection.
7. the demagnetization power supply device according to claim 6 for naval vessel, which is characterized in that the LLC conversion module is
LLC high-frequency converter.
8. a kind of demagnetization signal creating method for naval vessel, which is characterized in that using as described in any one of claim 1 to 7
The demagnetization power supply device for naval vessel, described method includes following steps:
The first output end of H4 inverter module and the voltage of second output terminal are adjusted according to the demagnetization sine wave feedback exported in real time
Difference；
The ripple in H4 inverter module output signal is filtered out by LCL filter module；
Inhibit the high-frequency interferencing signal in LCL filter module output signal by common mode inhibition module, obtains demagnetization signal.
9. the demagnetization signal creating method according to claim 8 for naval vessel, which is characterized in that the adjusting H4 inversion
The specific implementation of the voltage difference of the first output end and second output terminal of module includes:
0.5+K1 is set by the complementary duty duty ratio of the first power cell of H4 inverter module and the second power cell, by H4
The third power cell of inverter module and the complementary duty duty ratio of the 4th power cell are set as 0.5-K1.
10. the demagnetization signal creating method according to claim 9 for naval vessel, which is characterized in that according to described real-time
The demagnetization sine wave of output controls the size of K1 by pi regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317082.5A CN110034688A (en) | 2019-04-19 | 2019-04-19 | A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317082.5A CN110034688A (en) | 2019-04-19 | 2019-04-19 | A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110034688A true CN110034688A (en) | 2019-07-19 |
Family
ID=67239311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317082.5A Pending CN110034688A (en) | 2019-04-19 | 2019-04-19 | A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110034688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128511A (en) * | 2019-12-31 | 2020-05-08 | 中国人民解放军海军工程大学 | Current control device of vessel partition demagnetizing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956930A (en) * | 2014-05-19 | 2014-07-30 | 电子科技大学 | Frequency modulation method for full-bridge inverter circuit |
| CN105915058A (en) * | 2016-06-16 | 2016-08-31 | 吉林建筑大学 | Electric energy transmission device based on isolated full-bridge boosting converter circuit structure and control method thereof |
| CN107852087A (en) * | 2015-07-09 | 2018-03-27 | 建筑电子与通信公司 | High power density inverter (i) |
| CN108832804A (en) * | 2018-06-08 | 2018-11-16 | 哈尔滨工程大学 | It is a kind of improve two stage power converter intermediate-bus voltage dynamic property compensation method and device |
| CN109378155A (en) * | 2018-12-27 | 2019-02-22 | 国网宁夏电力有限公司 | A kind of converter power transformer eraser system |
-
2019
- 2019-04-19 CN CN201910317082.5A patent/CN110034688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956930A (en) * | 2014-05-19 | 2014-07-30 | 电子科技大学 | Frequency modulation method for full-bridge inverter circuit |
| CN107852087A (en) * | 2015-07-09 | 2018-03-27 | 建筑电子与通信公司 | High power density inverter (i) |
| CN105915058A (en) * | 2016-06-16 | 2016-08-31 | 吉林建筑大学 | Electric energy transmission device based on isolated full-bridge boosting converter circuit structure and control method thereof |
| CN108832804A (en) * | 2018-06-08 | 2018-11-16 | 哈尔滨工程大学 | It is a kind of improve two stage power converter intermediate-bus voltage dynamic property compensation method and device |
| CN109378155A (en) * | 2018-12-27 | 2019-02-22 | 国网宁夏电力有限公司 | A kind of converter power transformer eraser system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128511A (en) * | 2019-12-31 | 2020-05-08 | 中国人民解放军海军工程大学 | Current control device of vessel partition demagnetizing system |
| CN111128511B (en) * | 2019-12-31 | 2021-04-06 | 中国人民解放军海军工程大学 | Current control device of vessel partition demagnetizing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ali et al. | Isolated single-phase single-stage DC-AC cascaded transformer-based multilevel inverter for stand-alone and grid-tied applications | |
| JP2019530418A (en) | Three-phase converter and three-phase converter control method | |
| CN204216790U (en) | A kind of scanning power supply able to programme | |
| Lin | Analysis and implementation of a three-level PWM rectifier/inverter | |
| CN102545681B (en) | Step wave synthesis three-phase inverter capable of eliminating low frequency harmonic waves and control method | |
| CN108683350A (en) | A kind of three level NPC converter particular harmonics optimization modulation strategy | |
| CN110086367A (en) | Equipment for controlling DC-DC converter | |
| CN108075635A (en) | A kind of control method of pfc circuit | |
| CN205844371U (en) | A kind of energy feedback AC electronic load device of wide input and output voltage | |
| CN108429469A (en) | The sources Z dual stage matrix converter modulator approach based on Carrier-based PWM | |
| CN206099788U (en) | Novel sinusoidal invertion power supply system of full -bridge | |
| CN102684518B (en) | High-frequency redundancy PWM (pulse-width modulation) rectifier device and method based on instantaneous current feedforward control | |
| CN207218551U (en) | A kind of adjustable three-phase inverter | |
| CN105006980B (en) | The three level NPC current transformer PWM control strategies overlapped based on carrier wave | |
| CN104124882A (en) | Variable-frequency and variable-voltage multi-level high-power voltage source | |
| CN110034688A (en) | A kind of demagnetization power supply device and demagnetization signal creating method for naval vessel | |
| Usmani et al. | Comparison of different three phase inverter topologies: A review | |
| Zahira et al. | SPWM technique for reducing harmonics in three-phase non-linear load | |
| TWI416853B (en) | A New Type of Curved Winding Transformer in a Multi-Stage Voltage Source Converter System and Using a Special Harmonic Elimination Strategy | |
| CN214591178U (en) | Composite mining frequency converter based on power electronic transformer | |
| TWI452808B (en) | A method and apparatus for applying a DC side injection compensation to an eighteen pulse wave AC / DC converter | |
| Basu et al. | High-frequency transformer-link three-level inverter drive with common-mode voltage elimination | |
| CN200994109Y (en) | 12-phase controllable high power crystal growth equipment heating power circuit | |
| RU2279178C1 (en) | Three-phased controllable rectifier | |
| CN111478610A (en) | Phase-shifting frequency-doubling switch power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190719 |