CN103441692B - Series resonant inverter and its implementation - Google Patents
Series resonant inverter and its implementation Download PDFInfo
- Publication number
- CN103441692B CN103441692B CN201310325070.XA CN201310325070A CN103441692B CN 103441692 B CN103441692 B CN 103441692B CN 201310325070 A CN201310325070 A CN 201310325070A CN 103441692 B CN103441692 B CN 103441692B
- Authority
- CN
- China
- Prior art keywords
- pwm
- switching
- switching devices
- carry out
- drive singal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000010586 diagram Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 101150004367 Il4i1 gene Proteins 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007775 late Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Inverter Devices (AREA)
Abstract
The invention provides a kind of series resonant inverter and its implementation, method wherein comprises: adopt PWM and non-PWM to switch in turn, the opening of four switching devices of inverter is controlled with shutoff, wherein, according to the size of resonance current, adjust opening and turning off frequency of switching device; Wherein, the process of switching in turn comprises at least two switch periods, wherein in a switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make it at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, drive two of following bridge switching devices to carry out non-PWM, make it at preset duty cycle by two-way drive singal, another two-way drive singal drives two switching devices of top bridge to carry out PWM.Can be conducive to realizing the wear leveling of switching device and the design of radiator structure by the present invention.
Description
Technical field
The present invention relates to electronic technology field, more specifically, relate to a kind of series resonant inverter and its implementation.
Background technology
Nowadays, in X-ray machine high voltage source, series-resonant inverting circuit is its conventional topology.In series resonant circuit, the loss of switch and the design of radiator structure are the cores of series resonant circuit, and therefore, how to reduce switching loss and optimized heat radiation structure designs, be the subject matter that series resonant circuit faces always.
In existing high voltage source, the mode adopting full-bridge series resonance circuit, phase shifting control and advanced arm and lagging leg to switch in turn solves the loss equalizing problem of switch.Its switch adopts phase-shift PWM controlled, because this kind of phase shifting control is asymmetrical control mode, its advanced arm and lagging leg are switched in turn, each switching device can once no-voltage be opened and a zero voltage turn-off in every two switch periods, and its switching frequency is constant, this will inevitably cause switching loss in various degree to switching device, more increases the design difficulty of radiator structure.
In order to realize the loss equalizing of switch, utilize the principle that RCDSnubber circuit only works instantaneously at switch transition, effectively can improve the switching trace of switching device, reduce the climbing speed of its shutoff voltage, thus the loss of switching device is transferred on the resistance of RCDSnubber circuit, reduce the loss of switching device with this and improve the reliability of circuit, reach the object of switching loss equilibrium, but because itself also will produce certain loss, also to be subject to the restriction of inverter volume simultaneously, as relied on merely RCDSnubber circuit, it must bear larger stress, therefore, the effect realizing switching loss equilibrium is unsatisfactory.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of series resonant inverter and its implementation, to realize the loss equalizing of switching device.
According to an aspect of the present invention, a kind of implementation method of series resonant inverter is provided, comprises:
Adopt PWM and non-PWM to switch in turn, control the opening of four switching devices of inverter with shutoff, wherein, the size according to resonance current adjusts opening and turning off frequency of switching device;
Wherein, the process of switching in turn comprises at least two switch periods; Wherein in a switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two of top bridge switching devices at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, two of following bridge switching devices are driven to carry out non-PWM by two-way drive singal, make two of following bridge switching devices at preset duty cycle, another two-way drive singal drives two switching devices of top bridge to carry out PWM.
Wherein, opening and turning off in the process of frequency at the size adjustment switching device according to resonance current, compares the absolute value of resonance current and set point, if resonance current peak value is greater than set point, then reduces opening and turning off frequency of switching device; Otherwise increase opening and turning off frequency of switching device.
Wherein, by the process of switching in turn, make four switching devices in a switch periods, only have two switching devices to carry out PWM, two other switching device carries out non-PWM; And in every two switch periods, each switching device for once turns off firmly, and the rest switch moment is zero current turning-on or zero-current switching.
Wherein, preset duty ratio is 50% deduct default Dead Time.
On the other hand, the invention provides a kind of series resonant inverter, comprising:
Modulation system determining unit, for the mode adopting PWM and non-PWM to switch in turn, controls with shutoff the opening of four switching devices of inverter;
Switching frequency adjustment unit, for the size according to resonance current, adjusts opening and turning off frequency of switching device;
Modulating unit, for the switchover mode in turn determined according to modulation system determining unit, in one of them switch periods of at least two switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two of top bridge switching devices at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, two of following bridge switching devices are driven to carry out non-PWM by two-way drive singal, make two of following bridge switching devices at preset duty cycle, another two-way drive singal drives two switching devices of top bridge to carry out PWM.
Utilize above-mentioned according to series resonant inverter of the present invention and its implementation, by carrying out switching in turn of PWM and non-PWM to the drive singal of two half-bridge switch, realize the loss equalizing of switch, thus be conducive to the design carrying out radiator structure.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is the implementation method schematic flow sheet of the series resonant inverter according to the embodiment of the present invention;
Fig. 2 is the main circuit schematic diagram of the series resonant inverter according to the embodiment of the present invention;
Fig. 3 is the series resonant inverter block diagram according to the embodiment of the present invention.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
For aforementioned existing series-resonant inverting circuit, realizing in switching loss and heat radiation structure design, because the loss of switching device is different, cause the difficulty problem increasing heat radiation structure design, the modulation system that the present invention switches in turn by adopting PWM and non-PWM, realize the loss equalizing of switch, thus be conducive to the design carrying out radiator structure.
In order to describe the implementation method of series resonant inverter provided by the invention in detail, Fig. 1 shows the implementation method schematic flow sheet of the series resonant inverter according to the embodiment of the present invention.
As shown in Figure 1, the implementation method of series resonant inverter provided by the invention comprises:
S110: adopt PWM and non-PWM to switch in turn, the opening of four switching devices of inverter is controlled with shutoff; Wherein, opening and turning off frequency of switching device is adjusted according to the size of resonance current.
S120: the process of switching in turn comprises at least two switch periods, wherein in a switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two of top bridge switching devices at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, two of following bridge switching devices are driven to carry out non-PWM by two-way drive singal, make two of following bridge switching devices at preset duty cycle, another two-way drive singal drives two switching devices of top bridge to carry out PWM.
That is, when carrying out PWM and non-PWM switches in turn, comprise at least two switch periods, in the front half period of a switch periods wherein, first the switching device of one of them top bridge is driven to carry out non-PWM by drive singal, make it at a preset duty cycle, wherein, preset duty ratio is 50% Dead Time deducting setting; Then the switching device of one of them following bridge is driven to carry out PWM by drive singal; In the rear half period of a switch periods wherein, first another switching device of top bridge is driven to carry out non-PWM by drive singal, make it at preset duty cycle, then drive another switching device of following bridge to carry out PWM by drive singal.
In a upper switch periods, respectively by two-way drive singal, PWM is carried out to two of following bridge switching devices, and two of top bridge switching devices carry out non-PWM, so, in another switch periods of two switch periods, then PWM and non-PWM are switched, respectively by two-way drive singal, PWM is carried out to two of top bridge switching devices, non-PWM is carried out to two switching devices of following bridge.
That is, in the process of switching in turn, at least two switch periods, one-period carries out PWM to following bridge, and one-period carries out PWM to top bridge.
S130: by the process of switching in turn, make switching device in a switch periods, only have two switching devices to carry out PWM, two other switching device carries out non-PWM, in every two switch periods, each switching device for once turns off firmly, and the rest switch moment is zero current turning-on or zero-current switching.
In the present invention, preset duty ratio is 50% deduct default Dead Time.Because switching device is insulated gate polar form power tube, and all there is certain junction capacitance in insulated gate polar form power tube constant power device, switching device therefore can be caused to have delay phenomenon to occur when conducting turns off.In order to avoid turn-off delay effect cause upper and lower bridge arm (i.e. top bridge and following bridge) lead directly to, be therefore preset with Dead Time, its can effectively avoid late effect to cause when a brachium pontis does not turn off completely, another brachium pontis is in again the state of conducting.In the present invention, the Dead Time preset is 1 μ s-5 μ s, and default Dead Time is scaled percentage, then preset duty ratio is 50% deduct 1%-3%, and namely preset duty ratio is 47%-49%.
Can be found out by the schematic flow sheet described in Fig. 1, four switching devices of series resonant inverter are by switching PWM in turn to top bridge and following bridge, each switching device for once turns off firmly, the rest switch moment is all zero current turning-on or zero-current switching, thus achieve the switch loss equalizing of four switching devices, easily carry out heat radiation structure design.And adjust switching frequency according to the size of resonance current, the zero current turning-on of four switching devices and the zero-current switching of preset duty ratio brachium pontis can be ensured.
Wherein, in the size according to resonance current, opening and turning off in the process of frequency of adjustment switching device, compares the absolute value of resonance current and set point, if resonance current peak value is greater than set point, then reduces opening and turning off frequency of switching device; Otherwise increase opening and turning off frequency of switching device.
In order to describe series resonant inverter of the present invention in detail, Fig. 2 shows the main circuit schematic diagram of the series resonant inverter according to the embodiment of the present invention.
As shown in Figure 2, V1, V2, V3, V4 are the switching devices such as IGBT, and D1, D2, D3, D4 are switching device backward diode in parallel.L and C is resonant inductance and resonant capacitance, after transformer isolation, carry out rectification and capacitor filtering, and R is output loading, certainly also will comprise the parasitic parameter of transformer.This is applied in high voltage source occasion, is especially applied in the typical circuit of high-power Gigantos occasion.
First switch periods, first utilize the switching device V1 of a road drive singal to top bridge to carry out PWM, utilize the switching device V4 of a road drive singal to following bridge to carry out non-PWM; Then utilize the switching device V3 of a road drive singal to top bridge to carry out PWM, utilize the switching device V2 of a road drive singal to following bridge to carry out non-PWM.
Second switch periods, first utilize the switching device V4 of a road drive singal to following bridge to carry out PWM, utilize the switching device V1 of a road drive singal to top bridge to carry out non-PWM; Then utilize the switching device V2 of a road drive singal to following bridge to carry out PWM, utilize the switching device V3 of a road drive singal to top bridge to carry out non-PWM.
As mentioned above, in two switch periods, the switching sequence switched in turn four switching devices being carried out to PWM and non-PWM is as follows:
Fig1:V1V4 conducting, V1V4 zero current turning-on;
Fig2:D2V4 conducting, V1 turns off firmly;
Fig3:D2D3 conducting, V4 zero-current switching;
Fig4:V2V3 conducting, V2V3 zero current turning-on;
Fig5:V2D4 conducting, V3 turns off firmly;
Fig6:D1D4 conducting, V2 zero-current switching;
Fig7:V1V4 conducting, V1V4 zero current turning-on;
Fig8:D3V1 conducting, V4 turns off firmly;
Fig9:D2D3 conducting, V1 zero-current switching;
Fig10:V2V3 conducting, V2V3 zero current turning-on;
Fig11:V3D1 conducting, V2 turns off firmly;
Fig12:D1D4 conducting, V3 zero-current switching.
As can be seen from the schematic diagram of Fig. 2, in two switch periods, one of them switch periods, first two-way drive singal is utilized to carry out PWM to two of top bridge switching devices, utilize two-way drive singal to carry out non-PWM to two of following bridge switching devices in addition, make it at the duty cycle being similar to 50%; Another switch periods, first utilizes two-way drive singal to carry out PWM to two of following bridge switching devices, utilizes two-way drive singal to carry out non-PWM to the switching device of top bridge in addition, make it at the duty cycle being similar to 50%.
Due to the mode having four switching devices to turn off simultaneously, and according to the size of resonance current adjustment switching frequency, can ensure four switching devices to open electric current be 0 is 0 with the cut-off current of approximate 50% duty ratio brachium pontis.Compare with set point after resonance current is taken absolute value, if resonance current peak value is greater than set point, reduce switching frequency, otherwise then increase switching frequency.Switching frequency changes near resonance frequency, and suitable adjustment switching frequency ensures the optimization of switching device turn-off power loss and conduction loss and output voltage ripple.
In example of the present invention, by PWM and non-PWM bridge switch are switched in turn, that is to by carrying out PWM to the drive singal of two half-bridge switch devices and non-PWM switches in turn, the wear leveling of each switching device can be realized, and according to resonance current size adjustment switching frequency, the zero current turning-on of four switching devices and the zero-current switching of preset duty ratio brachium pontis can be ensured.That is, in every two switch periods, each switching device for once turns off firmly, and the rest switch moment is zero current turning-on or zero-current switching, is more conducive to realizing the wear leveling of switching device and the design of radiator structure.
Corresponding with said method, the present invention also provides a kind of series resonant inverter.Fig. 3 shows the series resonant inverter block diagram according to the embodiment of the present invention.
As shown in Figure 3, series resonant inverter 300 provided by the invention comprises modulation system determining unit 310, switching frequency adjustment unit 320 and modulating unit 330.
Wherein, the mode that modulation system determining unit 310 is switched in turn for adopting PWM and non-PWM, controls with shutoff the opening of four switching devices of inverter.
Switching frequency adjustment unit 320, opening and turning off frequency for the size adjustment switching device according to resonance current.
Modulating unit 330, for the switchover mode in turn determined according to modulation system determining unit 310, in one of them switch periods of at least two switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two of top bridge switching devices at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, two of following bridge switching devices are driven to carry out non-PWM by two-way drive singal, make two of following bridge switching devices at preset duty cycle, another two-way drive singal drives two switching devices of top bridge to carry out PWM.
In addition, switching frequency adjustment unit 320 comprises comparing unit (not shown) further, for the size according to resonance current, opening and turning off in the process of frequency at adjustment switching device, the absolute value of resonance current and set point are compared, if resonance current peak value is greater than set point, then reduce opening and turning off frequency of switching device; Otherwise increase opening and turning off frequency of switching device.
Series resonant inverter provided by the invention and its implementation, by PWM and non-PWM bridge switch are switched in turn, realize the wear leveling of each switching device, and according to resonance current size adjustment switching frequency, ensure the zero current turning-on of four switching tubes and the zero-current switching of preset duty ratio brachium pontis.By the present invention, can be conducive to realizing the wear leveling of switching device and the design of radiator structure.
Describe in an illustrative manner according to series resonant inverter of the present invention and its implementation above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that series resonant inverter and its implementation that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (9)
1. an implementation method for series resonant inverter, comprising:
Adopt PWM and non-PWM to switch in turn, the opening of four switching devices of described inverter is controlled with shutoff, wherein, adjusts opening of described switching device according to the size of resonance current and turn off frequency;
Described process of switching in turn comprises at least two switch periods;
Wherein in a switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two switching devices of described top bridge at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM;
In another switch periods, two switching devices of described following bridge are driven to carry out non-PWM by two-way drive singal, make two switching devices of described following bridge at described preset duty cycle, another two-way drive singal drives two switching devices of described top bridge to carry out PWM.
2. the implementation method of series resonant inverter as claimed in claim 1, wherein, is adjusting opening and turning off in the process of frequency of described switching device according to the size of described resonance current,
The absolute value of described resonance current and set point are compared, if described resonance current peak value is greater than described set point, then reduces opening and turning off frequency of described switching device; Otherwise increase opening and turning off frequency of described switching device.
3. the implementation method of series resonant inverter as claimed in claim 1, wherein, described preset duty ratio is 50% deduct default Dead Time.
4. the implementation method of series resonant inverter as claimed in claim 3, wherein, the Dead Time preset is 1 μ s-5 μ s.
5. the implementation method of series resonant inverter as claimed in claim 1, wherein, by described process of switching in turn, make described four switching devices in a switch periods, only have two switching devices to carry out PWM, two other switching device carries out non-PWM; And,
In every two switch periods, each switching device for once turns off firmly, and the rest switch moment is zero current turning-on or zero-current switching.
6. a series resonant inverter, comprising:
Modulation system determining unit, for adopting the switchover mode in turn of PWM and non-PWM, controls with shutoff the opening of four switching devices of described inverter;
Switching frequency adjustment unit, for adjusting opening and turning off frequency of described switching device according to the size of resonance current;
Modulating unit, for the switchover mode in turn determined according to described modulation system determining unit, in one of them switch periods of at least two switch periods, two switching devices of top bridge are driven to carry out non-PWM by two-way drive singal, make two switching devices of described top bridge at a preset duty cycle, another two-way drive singal drives two switching devices of following bridge to carry out PWM; In another switch periods, two switching devices of described following bridge are driven to carry out non-PWM by two-way drive singal, make two switching devices of described following bridge at described preset duty cycle, another two-way drive singal drives two switching devices of described top bridge to carry out PWM.
7. series resonant inverter as claimed in claim 6, wherein, described switching frequency adjustment unit comprises further:
Comparing unit, for adjusting opening and turning off in the process of frequency of described switching device according to the size of resonance current, the absolute value of described resonance current and set point are compared, if described resonance current peak value is greater than described set point, then reduce opening and turning off frequency of described switching device; Otherwise increase opening and turning off frequency of described switching device.
8. series resonant inverter as claimed in claim 6, wherein, described preset duty ratio is 50% deduct default Dead Time.
9. series resonant inverter as claimed in claim 8, wherein, the Dead Time preset is 1 μ s-5 μ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325070.XA CN103441692B (en) | 2013-07-30 | 2013-07-30 | Series resonant inverter and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325070.XA CN103441692B (en) | 2013-07-30 | 2013-07-30 | Series resonant inverter and its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103441692A CN103441692A (en) | 2013-12-11 |
| CN103441692B true CN103441692B (en) | 2016-03-30 |
Family
ID=49695372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310325070.XA Active CN103441692B (en) | 2013-07-30 | 2013-07-30 | Series resonant inverter and its implementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103441692B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716863A (en) * | 2015-02-12 | 2015-06-17 | 中国科学院长春光学精密机械与物理研究所 | Resonant charging type triggering device for rotary spark switch |
| US10374520B2 (en) | 2015-12-17 | 2019-08-06 | Koninklijke Philips N.V. | Control circuit and method for controlling a resonant converter and power inverter comprising the resonant converter and the control circuit |
| CN107786091A (en) * | 2016-08-26 | 2018-03-09 | 南京中兴新软件有限责任公司 | The control method and device of bridge converter |
| CN108155804B (en) * | 2016-12-02 | 2019-11-08 | 比亚迪股份有限公司 | The control method of electric car and its DC-DC converter and DC-DC converter |
| CN108155808B (en) * | 2016-12-02 | 2020-02-21 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155792B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155800B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155802B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155803B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155807B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155806B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155793A (en) * | 2016-12-02 | 2018-06-12 | 比亚迪股份有限公司 | The control method of electric vehicle and its DC-DC converter and DC-DC converter |
| CN108155809B (en) * | 2016-12-02 | 2019-11-08 | 比亚迪股份有限公司 | The control method of electric car and its DC-DC converter and DC-DC converter |
| CN108155796B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155797B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN108155810B (en) * | 2016-12-02 | 2020-03-31 | 比亚迪股份有限公司 | Electric vehicle, DC-DC converter thereof and control method of DC-DC converter |
| CN107070234B (en) * | 2017-03-24 | 2019-02-01 | 上海联影医疗科技有限公司 | The control circuit and control method of series resonant converter |
| CN110138230A (en) * | 2019-06-25 | 2019-08-16 | 西安特锐德智能充电科技有限公司 | Resonance circuit control method, power circuit and charging pile |
| CN114679043B (en) * | 2022-05-26 | 2022-09-09 | 深圳市首航新能源股份有限公司 | Voltage spike suppression method, control unit and resonant converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064476A (en) * | 2006-04-30 | 2007-10-31 | 艾默生网络能源系统有限公司 | Resonant DC/DC converter and its control method |
| CN101291110A (en) * | 2007-04-20 | 2008-10-22 | 台达电子工业股份有限公司 | Resonant converter system with relatively better efficiency and control method thereof |
| CN101604923A (en) * | 2009-07-13 | 2009-12-16 | 西安理工大学 | Pulse width modulation PWM control method for single-phase grid-connected inverter |
| CN102611348A (en) * | 2012-03-21 | 2012-07-25 | 福州大学 | Pulse-width modulation (PWM) output method for solving problem of nonuniform heating of bridge arm switch of single-phase full-bridge inverter circuit |
-
2013
- 2013-07-30 CN CN201310325070.XA patent/CN103441692B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064476A (en) * | 2006-04-30 | 2007-10-31 | 艾默生网络能源系统有限公司 | Resonant DC/DC converter and its control method |
| CN101291110A (en) * | 2007-04-20 | 2008-10-22 | 台达电子工业股份有限公司 | Resonant converter system with relatively better efficiency and control method thereof |
| CN101604923A (en) * | 2009-07-13 | 2009-12-16 | 西安理工大学 | Pulse width modulation PWM control method for single-phase grid-connected inverter |
| CN102611348A (en) * | 2012-03-21 | 2012-07-25 | 福州大学 | Pulse-width modulation (PWM) output method for solving problem of nonuniform heating of bridge arm switch of single-phase full-bridge inverter circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103441692A (en) | 2013-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103441692B (en) | Series resonant inverter and its implementation | |
| US9554431B2 (en) | LED driver | |
| CN103262648B (en) | Induction heating device and control method thereof | |
| CN107070239B (en) | A full-range soft-switching control method for dual active bridge DC/DC converters based on frequency regulation | |
| CN102427627B (en) | Full-bridge phase shift induction heating device | |
| CN107968471B (en) | LCLC resonance circuit, wide-range constant-power output direct-current charger and control method | |
| CN104052161A (en) | Wireless power transmission system adaptive to multi-load dynamic switching | |
| CN107342688A (en) | A kind of resonant power converter and its frequency tracking method | |
| CN103812317A (en) | Clamping absorption circuit and impedance adjusting method thereof | |
| CN106455278B (en) | X-ray high-voltage generator, the control circuit of series resonant converter and method | |
| CN102097970B (en) | Soft switching inverting circuit and control method thereof | |
| JP2018521626A (en) | Resonant system controller and cycle-by-cycle predictive soft switching | |
| EP2731251B1 (en) | Inverter circuit and control method therefor, and inverter circuit control device | |
| CN110460019A (en) | A kind of control method and device of bridge converter short-circuit protection | |
| US20180019676A1 (en) | Soft Switching Auxiliary Circuit, Three-Level Three-Phase Zero-Voltage Conversion Circuit | |
| US20140254204A1 (en) | Half-bridge dc/dc converter with asymmetric pulse controlling process | |
| CN206117492U (en) | Resonant control circuit | |
| CN204504465U (en) | Parallel type inversion electric power main circuit | |
| CN102682955B (en) | A kind of controllable impedance | |
| JP5939903B2 (en) | Electromagnetic induction heating device | |
| CN207426992U (en) | A kind of Sofe Switch isolated inverter of quick response | |
| CN105429494B (en) | Inverter power supply device and control method thereof | |
| CN202026242U (en) | High-frequency and high-voltage direct-current switching power supply based on current source mode | |
| CN103378727B (en) | A kind of DC/DC for bidirectional constant and control method thereof | |
| CN202600548U (en) | Active snubber soft switching power regulating circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGRUAN MEDICAL SYSTEMS CO., LTD., SHENYANG Effective date: 20140213 Owner name: PHILIPS (CHINA) INVESTMENT CO., LTD. Free format text: FORMER OWNER: DONGRUAN PHILIPS MEDICAL EQUIPMENT AND SYSTEM CO., LTD. Effective date: 20140213 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 110179 SHENYANG, LIAONING PROVINCE TO: 200070 ZHABEI, SHANGHAI |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20140213 Address after: Zhabei District Shanghai City, No. 218 West Tianmu Road 200070 Applicant after: Philips (China) Investment Co., Ltd. Applicant after: Dongruan Medical Systems Co., Ltd., Shenyang Address before: Hunnan rookie street Shenyang city Liaoning province 110179 No. 2 East Software Park Applicant before: Dongruan Philips Medical Equipment and System Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 200070 Lingshi Road, Jingan District, Shanghai, No. 718 A1 Co-patentee after: Dongruan Medical Systems Co., Ltd., Shenyang Patentee after: Philips (China) Investment Co., Ltd. Address before: Zhabei District Shanghai City, No. 218 West Tianmu Road 200070 Co-patentee before: Dongruan Medical Systems Co., Ltd., Shenyang Patentee before: Philips (China) Investment Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200070 Lingshi Road, Jingan District, Shanghai, No. 718 A1 Co-patentee after: DongSoft Medical System Co., Ltd. Patentee after: Philips (China) Investment Co., Ltd. Address before: 200070 Lingshi Road, Jingan District, Shanghai, No. 718 A1 Co-patentee before: Dongruan Medical Systems Co., Ltd., Shenyang Patentee before: Philips (China) Investment Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: No. 177-1, Chuangxin Road, Hunnan District, Shenyang, Liaoning Patentee after: DongSoft Medical System Co., Ltd. Address before: 200070 building A1, No.718, Lingshi Road, Jing'an District, Shanghai (post code: 200233) Co-patentee before: DongSoft Medical System Co., Ltd. Patentee before: Philips (China) Investment Co., Ltd. |