CN204886704U - High -power switching power supply circuit and have high -voltage inverter of this circuit - Google Patents
High -power switching power supply circuit and have high -voltage inverter of this circuit Download PDFInfo
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- CN204886704U CN204886704U CN201520655700.4U CN201520655700U CN204886704U CN 204886704 U CN204886704 U CN 204886704U CN 201520655700 U CN201520655700 U CN 201520655700U CN 204886704 U CN204886704 U CN 204886704U
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Abstract
The utility model provides a high -power switching power supply circuit and have high -voltage inverter of this circuit, includes two at least full -bridges transform module, an output filter inductor, an output filter capacitance, is connected to the direct -current input power after the input of all full -bridges transform module is parallelly connected, and the output of all full -bridges transform module and output filter inductor series connection are between output positive bus -bar and output negative busbar, and output filter capacitance's both ends are connected the output positive bus -bar respectively and are exported the negative busbar. To the inside bridge type diode of every full -bridge transform module, the vice limit rectifier diode's among its voltage stress and the prior art voltage stress equals, still exports filter inductor and has only one with output filter capacitance, reduces system's volume, the lowering system cost.
Description
Technical field
The present invention relates to field of switch power, particularly relate to and a kind ofly there is the high power switching power supply circuit of wide input voltage range and there is the high voltage converter of this circuit.
Background technology
For high power switching power supply, usually adopt bridge circuit topology.Bridge circuit topology exist shortcoming be to be used for step-down occasion, because of bridge type topology Switching Power Supply be used for wide input voltage range occasion time, the voltage stress of secondary rectifier diode is very high, if when output voltage is higher, its rectifier diode is difficult to choose.For wide-voltage range input, high voltage output, high power switching power supply occasion, usually adopt two groups of full-bridge circuits, the former limit parallel connection of two groups of full-bridge circuits, secondary series connection, as shown in Figure 1.The advantage of this circuit is the half that the output voltage often organizing full-bridge circuit is only total output voltage, thus reduces the voltage stress of secondary rectifier diode, but can bring the defect that system bulk is comparatively large, cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provide a kind of can reduce volume, reduce costs there is the high power switching power supply circuit of wide input voltage range and there is the high voltage converter of this circuit.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of high power switching power supply circuit, comprise at least two full-bridge conversion modules, output inductor, an output filter capacitor, direct-current input power supplying is connected to after the input parallel connection of all full-bridge conversion modules, the output of all full-bridge conversion modules and described output inductor are connected in series in and export positive bus-bar and export between negative busbar, and the two ends of described output filter capacitor connect output positive bus-bar respectively and export negative busbar.
In high power switching power supply circuit of the present invention, full-bridge conversion module described in each comprises and connecting successively: full bridge inverter, DC filtering circuit, transformer, diode bridge rectifier circuit.
In high power switching power supply circuit of the present invention, full bridge inverter described in each comprises multiple brachium pontis containing device for power switching, described high power switching power supply circuit comprises two full-bridge conversion modules and a control unit, the phase 90 ° of the drive singal that described control unit exports to the device for power switching of same position in the identical brachium pontis of the full bridge inverter of these two full-bridge conversion modules.
In high power switching power supply circuit of the present invention, described full bridge inverter comprises four brachium pontis, and each brachium pontis comprises a device for power switching and the fly-wheel diode of inverse parallel on described device for power switching; Described DC filtering circuit comprises the first inductance and the first electric capacity; Wherein, two relative brachium pontis tie points are connected to two inlet highways respectively as two inverter inputs, two other relative brachium pontis tie point is as two inverting output terminals, between the first end of described first capacitance series on the former limit of described transformer and an inverting output terminal, between the second end that described first inductance is serially connected in the former limit of described transformer and another one inverting output terminal.
In high power switching power supply circuit of the present invention, described diode bridge rectifier circuit comprises the first diode, second diode, 3rd diode, 4th diode, described first diode be connected with the negative electrode of the second diode and tie point as the first rectification output end, 3rd diode be connected with the anode of the 4th diode and tie point as the second rectification output end, the anode of the first diode and the negative electrode of the 3rd diode are all connected to the first end of the secondary of described transformer, the anode of the second diode and the negative electrode of the 4th diode are all connected to the second end of the secondary of described transformer,
The quantity of described full-bridge conversion module is two, wherein, second rectification output end of first full-bridge conversion module is connected with the first rectification output end of second full-bridge conversion module, first rectification output end of first full-bridge conversion module is connected to output positive bus-bar, second rectification output end of second full-bridge conversion module is connected to output negative busbar, described output inductor is serially connected between the second rectification output end of first full-bridge conversion module and the first rectification output end of second full-bridge conversion module or is serially connected in the first rectification output end of first full-bridge conversion module and exports between positive bus-bar or be serially connected in the second rectification output end of second full-bridge conversion module and export between negative busbar.
The invention also discloses a kind of high voltage converter, comprise described high power switching power supply circuit.
Implement of the present inventionly to there is the high power switching power supply circuit of wide input voltage range and there is the high voltage converter of this circuit, there is following beneficial effect: in the present invention, export positive bus-bar because the output of all full-bridge conversion modules and output inductor are connected in series in and export between negative busbar, the two ends of output filter capacitor connect output positive bus-bar respectively and export negative busbar, for the bridge diode of each full-bridge conversion module inside, its voltage stress is equal with the voltage stress of secondary rectifier diode of the prior art, but output inductor and output filter capacitor only have one, reduce system bulk, reduce system cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of traditional high power switching power supply circuit;
Fig. 2 is the structural representation of the first embodiment of high power switching power supply circuit of the present invention;
Fig. 3 is the structural representation of the second embodiment of high power switching power supply circuit of the present invention;
Fig. 4 is the structural representation of the 3rd embodiment of high power switching power supply circuit of the present invention;
Output inductor current ripples comparison diagram in two kinds of situations of Fig. 5 to be two groups of drive singal phase differences be 0 ° and 90 °.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
With reference to figure 2-4, in figure, A, B represent the input positive bus-bar, the input negative busbar that connect direct-current input power supplying, and C, D represent whole switching power circuit finally for output positive bus-bar, the output negative busbar of out-put supply.
High power switching power supply circuit of the present invention comprises: at least two full-bridge conversion modules 10, output inductor L0, an output filter capacitor C0, direct-current input power supplying is connected to after the input parallel connection of all full-bridge conversion modules 10, the output of all full-bridge conversion modules 10 and described output inductor L0 are connected in series in and export positive bus-bar and export between negative busbar, and the two ends of described output filter capacitor C0 connect output positive bus-bar C respectively and export negative busbar D.
The output of all full-bridge conversion modules 10 and output inductor L0 connect, for the bridge diode of inside, its voltage stress is equal with secondary rectifier diode voltage stress of the prior art, but output inductor L0 and output filter capacitor C0 only has one, reduce system bulk, reduce system cost.
Be described in detail for two full-bridge conversion modules 10 below.
Each described full-bridge conversion module 10 comprises and connecting successively: control unit (not shown), full bridge inverter 11, DC filtering circuit 12, transformer T1, diode bridge rectifier circuit 13.
Control unit, output drive signal controls the work of full bridge inverter 11.
Full bridge inverter 11, for being converted to interchange by direct current.The input of two full bridge inverters 11 is in parallel and be all connected to input positive bus-bar A, input negative busbar B.
DC filtering circuit 12, for the DC component filtering in the signal that exported by full bridge inverter 11.
Transformer T1, for reduced output voltage.
Diode bridge rectifier circuit 13, exports for the interchange after step-down being converted to direct current.
Output inductor L0 and output filter capacitor C0, for by the alternating current component filtering in the output signal of all diode bridge rectifier circuits 13 finally superposition, and output filter capacitor C0 realizes voltage stabilizing exports.
In the present embodiment, the output of two diode bridge rectifier circuits 13 is connected on and exports positive bus-bar C, exports between negative busbar D, output inductor L0 can be serially connected in the optional position of the series arm of two diode bridge rectifier circuits 13, such as, be connected between two diode bridge rectifier circuits 13 in Fig. 2, Fig. 3 is connected on first diode bridge rectifier circuit 13 and exports between positive bus-bar C, and Fig. 4 is connected on second diode bridge rectifier circuit 13 and exports between negative busbar D.
Concrete:
Described full bridge inverter 11 comprises four brachium pontis, and each brachium pontis comprises a device for power switching and the fly-wheel diode of inverse parallel on described device for power switching; Described DC filtering circuit 12 comprises the first inductance L 1 and the first electric capacity C1; Described diode bridge rectifier circuit 13 comprises the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4.
Wherein, two relative brachium pontis tie points are connected to input positive bus-bar A, input negative busbar B respectively as two inverter inputs, two other relative brachium pontis tie point is as two inverting output terminals, described first electric capacity C1 is serially connected between the first end on the former limit of described transformer T1 and an inverting output terminal, between the second end that described first inductance L 1 is serially connected in the former limit of described transformer T1 and another one inverting output terminal.
Described first diode D1 be connected with the negative electrode of the second diode D2 and tie point as the first rectification output end, 3rd diode D3 be connected with the anode of the 4th diode D4 and tie point as the second rectification output end, the anode of the first diode D1 and the negative electrode of the 3rd diode D3 are all connected to the first end of the secondary of described transformer T1, and the anode of the second diode D2 and the negative electrode of the 4th diode D4 are all connected to the second end of the secondary of described transformer T1.
Wherein, output inductor L0 and two full-bridge conversion module 10 two diode bridge rectifier circuits 13 be serially connected with three kinds of situations:
In Fig. 2, output inductor L0 is connected in series the second rectification output end of first full-bridge conversion module 10 and the first rectification output end of second full-bridge conversion module 10, first rectification output end of first full-bridge conversion module 10 is connected directly to and exports positive bus-bar C, second rectification output end of second full-bridge conversion module 10 is connected directly to output negative busbar D, output filter capacitor C0 and is connected to output positive bus-bar C, exports between negative busbar D.
In Fig. 3, second rectification output end of first full-bridge conversion module 10 is directly connected with the first rectification output end of second full-bridge conversion module 10, output inductor L0 is connected in series the first rectification output end of first full-bridge conversion module 10 and exports positive bus-bar C, second rectification output end of second full-bridge conversion module 10 is connected directly to output negative busbar D, output filter capacitor C0 and is connected to output positive bus-bar C, exports between negative busbar D.
In Fig. 4, second rectification output end of first full-bridge conversion module 10 is directly connected with the first rectification output end of second full-bridge conversion module 10, output inductor L0 is connected in series the second rectification output end of second full-bridge conversion module 10 and exports negative busbar D, first rectification output end of first full-bridge conversion module 10 is connected directly to and exports positive bus-bar C, and output filter capacitor C0 is connected to and exports positive bus-bar C, exports between negative busbar D.
It is no matter which kind of mode in Fig. 2-4, all output inductor L0 and all diode bridge rectifier circuits 13 are serially connected with export positive bus-bar C, export between negative busbar D, so, both ensure that the voltage stress of secondary side diode, and output inductor L0 and output filter capacitor C0 only has one, reduce system bulk, reduce system cost.
It should be explicitly made clear at this point, the quantity of full-bridge conversion module 10 can according to circumstances be selected, and is not limited to two.No matter quantity is how many, all only the output of all full-bridge conversion modules 10 and output inductor L0 entirety need be connected on two and export between bus C, D.
Further preferred, in the present invention, the phase 90 ° (only change the phase place of drive singal, the duty ratio of drive singal is equal) of the drive singal that control unit exports to the device for power switching of same position in the identical brachium pontis of the full bridge inverter of two full-bridge conversion modules 10.So, at most, when output inductor L0 current ripples is identical, output inductor L0 can be reduced to 1/5 of output inductor L0 in conventional art in output waveform superposition, further reduction system volume, reduces costs.
With reference to figure 5, the output inductor L0 current ripples comparison diagram in two kinds of situations of to be two groups of drive singal phase differences be 0 ° and 90 °.In figure, dotted line represents that phase difference is the control mode of 90 °, and solid line represents that phase difference is the control mode (traditional control method) of 0 °.
When all hardware specifications are identical, as can be seen from the figure, phase difference differ the current ripples of the output inductor L0 of the control mode of 90 ° be adopt traditional control method output inductor L0 current ripples less than 1/5.Therefore, when the current ripples of output inductor L0 is identical, output inductor L0 can be reduced to and adopt 1/5 of traditional control method, and volume reduces greatly, and cost is reduced.
Further, the invention also discloses a kind of high voltage converter with this high power switching power supply circuit.
In sum, in the present invention, export positive bus-bar because the output of all full-bridge conversion modules and described output inductor are connected in series in and export between negative busbar, the two ends of output filter capacitor connect output positive bus-bar respectively and export negative busbar, for the bridge diode of each full-bridge conversion module inside, its voltage stress is equal with the voltage stress of secondary rectifier diode of the prior art, but output inductor and output filter capacitor only have one, reduce system bulk, reduce system cost; Further, the present invention exports to the phase 90 ° of the drive singal of the device for power switching of the same position of two full-bridge conversion modules, therefore output waveform is made to superpose at most, when output inductor current ripples is identical, output inductor can be reduced to 1/5 of output inductor in conventional art, further reduction system volume, reduces costs.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (6)
1. a high power switching power supply circuit, it is characterized in that, comprise at least two full-bridge conversion modules, output inductor, an output filter capacitor, direct-current input power supplying is connected to after the input parallel connection of all full-bridge conversion modules, the output of all full-bridge conversion modules and described output inductor are connected in series in and export positive bus-bar and export between negative busbar, and the two ends of described output filter capacitor connect output positive bus-bar respectively and export negative busbar.
2. high power switching power supply circuit according to claim 1, is characterized in that, full-bridge conversion module described in each comprises and connecting successively: full bridge inverter, DC filtering circuit, transformer, diode bridge rectifier circuit.
3. high power switching power supply circuit according to claim 2, it is characterized in that, full bridge inverter described in each comprises multiple brachium pontis containing device for power switching, described high power switching power supply circuit comprises two full-bridge conversion modules and a control unit, the phase 90 ° of the drive singal that described control unit exports to the device for power switching of same position in the identical brachium pontis of the full bridge inverter of these two full-bridge conversion modules.
4. high power switching power supply circuit according to claim 2, is characterized in that, described full bridge inverter comprises four brachium pontis, and each brachium pontis comprises a device for power switching and the fly-wheel diode of inverse parallel on described device for power switching; Described DC filtering circuit comprises the first inductance and the first electric capacity; Wherein, two relative brachium pontis tie points are connected to two inlet highways respectively as two inverter inputs, two other relative brachium pontis tie point is as two inverting output terminals, between the first end of described first capacitance series on the former limit of described transformer and an inverting output terminal, between the second end that described first inductance is serially connected in the former limit of described transformer and another one inverting output terminal.
5. high power switching power supply circuit according to claim 2, it is characterized in that, described diode bridge rectifier circuit comprises the first diode, second diode, 3rd diode, 4th diode, described first diode be connected with the negative electrode of the second diode and tie point as the first rectification output end, 3rd diode be connected with the anode of the 4th diode and tie point as the second rectification output end, the anode of the first diode and the negative electrode of the 3rd diode are all connected to the first end of the secondary of described transformer, the anode of the second diode and the negative electrode of the 4th diode are all connected to the second end of the secondary of described transformer,
The quantity of described full-bridge conversion module is two, wherein, second rectification output end of first full-bridge conversion module is connected with the first rectification output end of second full-bridge conversion module, first rectification output end of first full-bridge conversion module is connected to output positive bus-bar, second rectification output end of second full-bridge conversion module is connected to output negative busbar, described output inductor is serially connected between the second rectification output end of first full-bridge conversion module and the first rectification output end of second full-bridge conversion module or is serially connected in the first rectification output end of first full-bridge conversion module and exports between positive bus-bar or be serially connected in the second rectification output end of second full-bridge conversion module and export between negative busbar.
6. a high voltage converter, is characterized in that, comprises the high power switching power supply circuit as described in any one of claim 1-5.
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| CN201520655700.4U CN204886704U (en) | 2015-08-27 | 2015-08-27 | High -power switching power supply circuit and have high -voltage inverter of this circuit |
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| CN201520655700.4U CN204886704U (en) | 2015-08-27 | 2015-08-27 | High -power switching power supply circuit and have high -voltage inverter of this circuit |
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| CN105553271A (en) * | 2016-03-04 | 2016-05-04 | 盐城工学院 | Control method of three-phase DC converter |
| CN105576985A (en) * | 2016-03-04 | 2016-05-11 | 盐城工学院 | Control method of DC-DC converter |
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| CN106972752A (en) * | 2017-05-08 | 2017-07-21 | 深圳陆巡科技有限公司 | Can wide scope regulation output DC DC converters |
| CN107689732A (en) * | 2017-10-20 | 2018-02-13 | 桂林狮达机电技术工程有限公司 | Accelerating power source device and its control method are equipped in the increasing material manufacturing of electron beam powder bed |
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| CN105656313B (en) * | 2016-03-04 | 2018-06-05 | 盐城工学院 | A kind of control method of three-phase straight convertor |
| CN105576985A (en) * | 2016-03-04 | 2016-05-11 | 盐城工学院 | Control method of DC-DC converter |
| CN105656313A (en) * | 2016-03-04 | 2016-06-08 | 盐城工学院 | Control method of three-phase direct current-direct current converter |
| CN105553271A (en) * | 2016-03-04 | 2016-05-04 | 盐城工学院 | Control method of three-phase DC converter |
| CN105553271B (en) * | 2016-03-04 | 2018-06-05 | 盐城工学院 | A kind of control method of three-phase dc converter |
| CN105576985B (en) * | 2016-03-04 | 2018-05-25 | 盐城工学院 | A kind of control method of straight convertor |
| CN106972752A (en) * | 2017-05-08 | 2017-07-21 | 深圳陆巡科技有限公司 | Can wide scope regulation output DC DC converters |
| CN109039079A (en) * | 2017-06-09 | 2018-12-18 | 台达电子工业股份有限公司 | The converter circuit and its circuit board layout structure of DC to DC |
| US10601325B2 (en) | 2017-06-09 | 2020-03-24 | Delta Electronics, Inc. | DC-to-dC converter circuit and circuit board layout structure for the same |
| CN109039079B (en) * | 2017-06-09 | 2020-09-11 | 台达电子工业股份有限公司 | DC-DC converter circuit and circuit board layout structure thereof |
| CN107689732A (en) * | 2017-10-20 | 2018-02-13 | 桂林狮达机电技术工程有限公司 | Accelerating power source device and its control method are equipped in the increasing material manufacturing of electron beam powder bed |
| CN107689732B (en) * | 2017-10-20 | 2023-09-08 | 桂林狮达技术股份有限公司 | Acceleration power supply device of electron beam powder bed material-increasing manufacturing equipment and control method thereof |
| CN108306514A (en) * | 2018-03-09 | 2018-07-20 | 深圳市高斯宝电气技术有限公司 | A kind of DC-DC converter of fuel cell |
| CN109889058A (en) * | 2019-02-28 | 2019-06-14 | 中国第一汽车股份有限公司 | A kind of new energy vehicle inverter stream busbar |
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Effective date of registration: 20210517 Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. Address before: 215000 north side of Youxiang Road, Wangshan Industrial Park, Wuzhong Economic Development Zone, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU INOVANCE TECHNOLOGY Co.,Ltd. |
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