CN204993089U - Take parallelly connected modularization alternating -current converter of input series connection output of soft switch - Google Patents
Take parallelly connected modularization alternating -current converter of input series connection output of soft switch Download PDFInfo
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- CN204993089U CN204993089U CN201520047805.1U CN201520047805U CN204993089U CN 204993089 U CN204993089 U CN 204993089U CN 201520047805 U CN201520047805 U CN 201520047805U CN 204993089 U CN204993089 U CN 204993089U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model relates to a take parallelly connected modularization alternating -current converter of input series connection output of soft switch belongs to isolated form alternating -current converter technical field. The utility model discloses a structurally comprise 2 isolated form high -frequency ac converter submodule pieces, the inlet side is the cascaded structure, and the outlet side is parallelly connected structure. Insert a series connection LC network between the mid point through the leading arm at first full -bridge circuit and the mid point of second full -bridge circuit hysteresis arm, leading bizhong point of second full -bridge circuit and first full -bridge circuit hysteresis bizhong point insert the input of another series connection LC network implementation establish ties export the modularization alternating -current converter that connects in parallel in the no -voltage of lagging leg during in the underloading open ZVS, further reduce switching loss, improvement conversion efficiency.
Description
Technical field
The utility model relates to the application of electric and electronic technical field in electric power system, particularly relates to a kind of input series and output parallel modularization AC converter with Sofe Switch.
Background technology
Along with the development of social demand, the high input voltage switching mode converters of different capacity grade has penetrated into the industry-by-industry of national economy.Due to the restriction of power device, high input voltage power supply can not equally with conventional topologies design, and needs to adopt the novel control method of novel topologies to realize the change of high input voltage.By input series and output parallel, AC-DC converter block combiner is got up to be applicable to the occasion of high voltage input low-voltage and high-current output type, input series and output parallel modularization AC converter has relevant research, but the research be mostly confined to control method, seldom studies the soft switch technique of input series and output parallel converter.
Utility model content
The utility model not easily realizes to overcome in the phase-shifted full-bridge converter of input series and output parallel lagging leg when underloading the problem that no-voltage opens (zvs), propose under one is applied in high pressure occasion, there is the input series and output parallel modularization AC converter of Sofe Switch.
The described main circuit with the input series and output parallel modularization AC converter of Sofe Switch as shown in Figure 1, is connected by input by two identical isolated phase-shifted full-bridge converter modules, the form of output parallel connection is formed.Isolated phase-shifted full-bridge converter module is made up of full-bridge type frequency converter, high frequency transformer and bridge rectifier filter circuit.The former limit of high frequency transformer is the full-bridge type frequency converter be jointly made up of the metal-oxide-semiconductor of four pairs of differential concatenations, Q1a, Q1b, Q2a, Q2b, Q3a, Q3b, Q4a, Q4b, Q5a, Q5b, Q6a, Q6b, Q7a, Q7b, Q8a, Q8b are metal-oxide-semiconductor, T is high frequency transformer, wherein Q1a-Q4b forms the first full-bridge frequency converter, Q5a-Q8b forms the second full-bridge frequency converter, and wherein Q1a, Q1b, Q3a, Q3b form the first full-bridge frequency converter leading-bridge; Q5a, Q5b, Q7a, Q7b form the second full-bridge frequency converter leading-bridge, and Q2a, Q2b, Q4a, Q4b form the first full-bridge frequency converter lagging leg; Q6a, Q6b, Q8a, Q8b form the second full-bridge frequency converter lagging leg, a series LC network is accessed between the mid point and the mid point of the second full-bridge type frequency converter lagging leg of the advanced arm of the first full-bridge type frequency converter, described LC network is formed by an inductance and a capacitances in series, and inductance and capacitance positions can exchange; Another series LC network is accessed at the advanced arm mid point of the second full-bridge type frequency converter and the first full-bridge type frequency converter lagging leg mid point, this LC network is formed by an inductance and a capacitances in series, inductance, capacitance parameter are identical with previous LC network parameter, and inductance and capacitance positions can exchange.High frequency transformer secondary is the bridge rectifier filter circuit be made up of four diodes and inductance, electric capacity.
The series LC network that Cr1, Lr1 are identical with Cr2, Lr2 two has Sofe Switch function, can realize lagging leg no-voltage conducting when underloading in the phase-shifted full-bridge converter of input series and output parallel.Two identical input capacitance Cd1, Cd2 play the effect of input dividing potential drop, respectively bear 1/2 of input voltage.Two high frequency transformer T1, T2 parameters are identical, and transformer secondary is two groups of bridge rectifiers exporting rectifier diode D1-D4, D5-D6 and form, and two groups of output inductors Lf1, Lf2, and parameter is also identical.
Because this AC converter is connected to LC resonant type soft-switch, switching loss can be reduced further, improve conversion efficiency.Zero-pressure is open-minded; Can automatically adapt to different input voltages, output voltage and load.The gamut Sofe Switch of phase-shifted full-bridge converter can be realized according to the utility model, improve the efficiency of whole converter; Be applicable to the conversion occasion that high input voltage exports to low pressure, and meet wide input voltage range, wide output voltage range, wide load variations.
Accompanying drawing explanation
Fig. 1 is the input series and output parallel modularization AC converter structure chart of band Sofe Switch.
Embodiment
Fig. 1 is the phase shifting control strategy that the AC converter being with the input series and output parallel modularization AC converter of Sofe Switch involved in the present invention adopts polarity discriminating, this AC converter be input as alternating voltage Uin, first the polarity of Uin is judged, if input voltage is greater than zero, under be designated as all metal-oxide-semiconductor conductings of b, former limit is equivalent to the full-bridge circuit being input as positive voltage, adopt phase shifting control, under certain loading condition, by leakage inductance parameter and two ends, the paralleling MOS pipe drain-source pole capacitance parameter of Design of Transformer, the soft open-minded of each switching tube can be realized.When input voltage is for time negative, under transformer primary side, be designated as all metal-oxide-semiconductor conductings of a, under be designated as b metal-oxide-semiconductor adopt high frequency to control, remain a phase whole-bridging circuit.Consider the situation that input voltage is greater than zero, detailed process is as follows:
The drive singal of switching tube Q1b, Q2b, Q3b, Q4b, Q5b, Q6b, Q7b, Q8b meets following relation, the drive singal of leading-bridge Q1b, Q7b is identical, the drive singal of Q3b, Q5b is identical, is respectively the PWM complementary signal that duty ratio is 0.5, there is dead band between two groups of signals.And the drive singal of lagging leg Q2b, Q8b is identical, the drive singal of Q4b, Q6b is identical, to be also duty ratio be 0.5 PWM complementary signal, there is dead band between two groups of signals.
When lagging leg Q2b, Q8b drive singal control two pipes turn off simultaneously time, ip1 and ir1 simultaneously with C4, C8 resonance, there is resonance with C12, C16 in ip2 and ir2 simultaneously.Subsequently, C2, C16 charging voltage rises to Vin/2, and C8, C12 are discharged to 0, and the diode current flow of brachium pontis Q4b, Q6b now, it is open-minded that Q4b, Q6b realize no-voltage.
When leading-bridge Q1b, Q7b drive singal control two pipes turn off simultaneously time, ip1 and ir2 simultaneously with C3, C7 resonance, there is resonance with C11, C15 in ip2 and ir1 simultaneously.Subsequently, C3, C15 charging voltage rises to Vin/2, and C7, C11 are discharged to 0, and the diode current flow of brachium pontis Q3b, Q5b now, it is open-minded that Q3b, Q5b realize no-voltage.Half period switching tube is similar to front half period in addition.
On first phase-shifting full-bridge conversion module leading-bridge pipe drive singal rising edge to pipe drive singal under lagging leg rising edge between be phase shifting angle, regulate the size of phase shifting angle to determine current amplitude size in action time of two series LC network both end voltage and two LC networks, thus control the output voltage of phase-shifting transformer.Phase shifting angle increases, and output voltage reduces, and in series LC network, current amplitude increases; Otherwise phase shifting angle reduces, output voltage increases, and the current amplitude in series LC network reduces.
When exporting as constant voltage, input voltage raises and causes phase shifting angle to increase, thus the current amplitude in series LC network increases, and the no-voltage more easily realizing each switching tube is open-minded.When output voltage is constant and load reduces, phase shifting angle increases, and the current amplitude now in series LC network increases, and the no-voltage realizing each switching tube is open-minded.In output voltage change and output resistance is constant time, output voltage increases, and phase shifting angle reduces, and series LC network electric current reduces, but now transformer leakage inductance electric current still to realize the no-voltage of switching tube open-minded.Along with output voltage reduces, power output also reduces, and phase shifting angle increases, and the current amplitude of series LC network increases, and now Sofe Switch is realized by the electric current of series LC network.
Claims (1)
1. the input series and output parallel modularization AC converter with Sofe Switch, is characterized in that this input series and output parallel modularization AC converter with Sofe Switch is connected by input by two identical isolated phase-shifted full-bridge converter modules, the form of output parallel connection is formed; Isolated phase-shifted full-bridge converter module is made up of full-bridge type frequency converter, high frequency transformer and bridge rectifier filter circuit; The former limit of high frequency transformer is the full-bridge type frequency converter be jointly made up of the metal-oxide-semiconductor of four pairs of differential concatenations, Q1a, Q1b, Q2a, Q2b, Q3a, Q3b, Q4a, Q4b, Q5a, Q5b, Q6a, Q6b, Q7a, Q7b, Q8a, Q8b are metal-oxide-semiconductor, T is high frequency transformer, wherein Q1a-Q4b forms the first full-bridge frequency converter, Q5a-Q8b forms the second full-bridge frequency converter, and wherein Q1a, Q1b, Q3a, Q3b form the first full-bridge frequency converter leading-bridge; Q5a, Q5b, Q7a, Q7b form the second full-bridge frequency converter leading-bridge, and Q2a, Q2b, Q4a, Q4b form the first full-bridge frequency converter lagging leg; Q6a, Q6b, Q8a, Q8b form the second full-bridge frequency converter lagging leg, a series LC network is accessed between the mid point and the mid point of the second full-bridge type frequency converter lagging leg of the advanced arm of the first full-bridge type frequency converter, described LC network is formed by an inductance and a capacitances in series, and inductance and capacitance positions can exchange; Another series LC network is accessed at the advanced arm mid point of the second full-bridge type frequency converter and the first full-bridge type frequency converter lagging leg mid point, this LC network is formed by an inductance and a capacitances in series, inductance, capacitance parameter are identical with previous LC network parameter, and inductance and capacitance positions can exchange; High frequency transformer secondary is the bridge rectifier filter circuit be made up of four diodes and inductance, electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047805.1U CN204993089U (en) | 2015-01-23 | 2015-01-23 | Take parallelly connected modularization alternating -current converter of input series connection output of soft switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520047805.1U CN204993089U (en) | 2015-01-23 | 2015-01-23 | Take parallelly connected modularization alternating -current converter of input series connection output of soft switch |
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| CN204993089U true CN204993089U (en) | 2016-01-20 |
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| CN201520047805.1U Expired - Fee Related CN204993089U (en) | 2015-01-23 | 2015-01-23 | Take parallelly connected modularization alternating -current converter of input series connection output of soft switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199584A (en) * | 2017-12-25 | 2018-06-22 | 北京精密机电控制设备研究所 | A kind of forward power circuit of multitube series connection |
| CN111384858A (en) * | 2018-12-29 | 2020-07-07 | 中兴通讯股份有限公司 | Full-bridge circuit and full-bridge converter |
| CN116979813A (en) * | 2023-09-22 | 2023-10-31 | 武汉海德博创科技有限公司 | IPOS phase-shifting full-bridge circuit and switching converter |
-
2015
- 2015-01-23 CN CN201520047805.1U patent/CN204993089U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199584A (en) * | 2017-12-25 | 2018-06-22 | 北京精密机电控制设备研究所 | A kind of forward power circuit of multitube series connection |
| CN108199584B (en) * | 2017-12-25 | 2020-07-14 | 北京精密机电控制设备研究所 | Multi-tube series forward power circuit |
| CN111384858A (en) * | 2018-12-29 | 2020-07-07 | 中兴通讯股份有限公司 | Full-bridge circuit and full-bridge converter |
| CN116979813A (en) * | 2023-09-22 | 2023-10-31 | 武汉海德博创科技有限公司 | IPOS phase-shifting full-bridge circuit and switching converter |
| CN116979813B (en) * | 2023-09-22 | 2023-12-12 | 武汉海德博创科技有限公司 | IPOS phase-shifting full-bridge circuit and switching converter |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20170123 |