CN102281007A - Multi-transformer switch power supply with cascaded output - Google Patents
Multi-transformer switch power supply with cascaded output Download PDFInfo
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- CN102281007A CN102281007A CN2011102531938A CN201110253193A CN102281007A CN 102281007 A CN102281007 A CN 102281007A CN 2011102531938 A CN2011102531938 A CN 2011102531938A CN 201110253193 A CN201110253193 A CN 201110253193A CN 102281007 A CN102281007 A CN 102281007A
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- 238000004804 winding Methods 0.000 claims description 23
- 238000005070 sampling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000000178 monomer Substances 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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Abstract
The invention discloses a multi-transformer switch power supply with a cascaded output. The multi-transformer switch power supply comprises a plurality of groups of transformers, a rectifier, a high frequency transformer, a driving module, a power supply controller and a cascade controller, wherein the plurality of groups of transformers are used for converting direct current into alternating current; the rectifier is used for converting the alternating current into the direct current; the high frequency transformer is used for raising voltage or reducing voltage; the driving module is used for selecting and driving switch devices of the transformers; the power supply controller is used for outputting a control signal of a single power supply monomer; and the cascade controller is used for cascading a plurality of switch power supplies. The switch power supply can be applied to the electrochemical field.
Description
Technical field
But the present invention relates to a kind of Switching Power Supply of output cascade of multiple transformer, can in relative broad range, regulate, have the high power switching power supply that the cascade of depression belt heavy load ability is used continuously but relate in particular to a kind of voltage.
Background technology
At present, electrochemical power source commonly used on the market is in order to satisfy various requirement, and used Switching Power Supply need (be generally 0.1～100V) Adjustable Output Voltage, and when output voltage is 0.1V, still require output current can reach rated value in a big way.Because the loss of the switching device that adopted and transformer etc., output voltage is lower, power output hour, the whole efficiency of Switching Power Supply is very low, and when low-voltage (1V is following usually), is difficult to reach rated current and exports.In order to adapt to application scenario more widely, for the high power switching power supply of same model require can be in parallel or series connection use, this just requires Switching Power Supply to have all to press and the ability of current-sharing.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, propose the continuously adjustable large power supply of voltage in a kind of relative broad range, adopt the topological structure of many group converters, can satisfy the operating mode of output rated current when low pressure.
The present invention is achieved by the following technical solutions, the present invention includes: organize converter, rectifier, high frequency transformer, driver module, power-supply controller of electric more, all join controller, wherein: organize converter more and be used for direct current is converted to interchange; It is direct current that rectifier is used for exchange conversion; High frequency transformer is used to boost or step-down; Driver module is used to select the also switching device of driving transducer; Power-supply controller of electric is used to export the control signal of single power supply single; All join controller and be used for many these Switching Power Supplies of cascade.
Described many group converters can adopt full-bridge converter or half-bridge converter, determine the quantity of converter according to the scope of output voltage, specifically are the minimum voltages according to desired exportable rated current.Increase the quantity of converter, also can improve the whole efficiency of Switching Power Supply, the structure of organizing converter identical more.
Described rectifier can adopt full-bridge rectification form or half-bridge rectification form.
The quantity of the elementary winding of described high frequency transformer is identical with the quantity of many group converters, if adopt full-bridge converter, each elementary winding is without centre tap, if adopt half-bridge converter, each elementary winding need increase centre tap, the form of secondary winding is by the structures shape of rectifier, and full-bridge rectifier does not need centre tap, and half bridge rectifier needs centre tap.
Described driver module by drive circuit, optocoupler, and the enable signal of optocoupler form, each switching device corresponding drive circuit, optocoupler and an enable signal thereof, whether the enable signal of optocoupler works by the control change device that enables of control optocoupler by selecting signal and cascade signal and decision behind the door.Drive circuit is made up of chip for driving and driving transformer, chip for driving has strengthened the driving force of signal, the driving transformer primary side has a winding, primary side has two windings, with the drive signal that one group of TRANSFORMATION OF THE DRIVING is two groups of complementations, be used for driving upper and lower two switching devices of a brachium pontis.When optocoupler did not enable, the output of driving transformer can't produce voltage difference, also just can't the driving switch device, and switching device is in off state, and corresponding converter is not worked.
Described power-supply controller of electric has only one, drives many group converters, sets a basic transformation device, and this converter keeps operating state always, to this converter sample, with next drive signal of exporting constantly of decision power-supply controller of electric.
Many Switching Power Supplies of described cascade controller control can make that many Switching Power Supplies are in parallel or the output of connecting, and each Switching Power Supply is provided with sample port, the sample port of output current, cascade signal port, " independence/cascaded switch " of output voltage.
If " independence/cascaded switch " is in " independence " state, cascade signal just is in height, and the enable signal of optocoupler is by selecting signal deciding; If " independence/cascaded switch " is in " cascade " state, will control this signal by cascade controller, make this Switching Power Supply operate as normal, output " height " cascade signal is not if this Switching Power Supply is worked output " low " cascade signal.
During series connection, the sample port and the cascade signal port of each switch power source output voltage are connected to cascade controller, cascade controller is each output voltage relatively, obtain minimum output voltage, set the limit value of a permission, the Switching Power Supply in limited field works on, the cascade signal that surpasses the Switching Power Supply of limit value is low, the optocoupler of all driver modules of this Switching Power Supply will not enable, and this Switching Power Supply is in failure state, and the data that at every turn sample output voltage will be carried out this operation; When in parallel, the sampling output current compares, obtain minimum output current, set the limit value of a permission, Switching Power Supply in limits works on, the cascade signal that surpasses the Switching Power Supply of limit value is low, and optocoupler will not enable in all driver modules of this Switching Power Supply, and the data that at every turn sample output current will be carried out this operation.
Cascade controller is for the sampling of output voltage or electric current, and sample frequency is higher, is close to suitable with the switching frequency of inverter.
Selection signal in the optocoupler enable signal is by the output voltage decision of Switching Power Supply, each converter is a parallel-connection structure, voltage waveform to the input of high frequency transformer primary side winding is identical, keep synchronously, be equivalent to elementary winding parallel connection, thereby change the turn ratio of high frequency transformer primary side and primary side winding, the converter of work is many more, primary side and primary side turn ratio are low more, and output voltage is high more.
Compared with prior art, the present invention has following beneficial effect: the first, Switching Power Supply can be regulated in the voltage range of broad continuously; The second, still can export rated current during low pressure; Three, adopt the multi-inverter structure, the Switching Power Supply whole efficiency is higher; Four, designed all cascade control circuits of pressure, current-sharing, the monomer Switching Power Supply can realize connecting and parallel connection is used simultaneously, increases the capacity of power supply.
Description of drawings
But Fig. 1 is the topological structure of Switching Power Supply of the output cascade of full-bridge 3 converters;
But Fig. 2 is the topological structure of Switching Power Supply of the output cascade of half-bridge 3 converters;
But Fig. 3 is the driver module of Switching Power Supply of the output cascade of full-bridge 3 converters;
Fig. 4 is for satisfying the cascade controller of 3 Switching Power Supply cascades.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment has provided detailed execution mode and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.Therefore, should be understood that appended claim is intended to contain all such modifications and the change that falls into true spirit of the present invention.
As shown in Figure 1, present embodiment comprises: converter 11, converter 12, converter 13, high frequency transformer T, rectifier 14, and wherein: high frequency transformer T input winding has 3,1 of output winding, and all do not have centre tap; Converter 11,12,13 parallel connections are input as U
In, three transformer configuration are identical, all are full-bridge converter; Rectifier 14 is full-bridge rectifier, wherein U
OutWith U
1Need external-connected port, use for cascade controller.
Converter 11 is by the switching device S of 4 inverse parallel diodes
11, S
12, S
13, S
14Form; Converter 12 is by the switching device S of 4 inverse parallel diodes
21, S
22, S
23, S
24Form; Converter 13 is by the switching device S of 4 inverse parallel diodes
31, S
32, S
33, S
34Form.According to the range of output voltage, select the quantity of converter work, if rated voltage is U, work as output voltage U
OutWhen 0～U/3, converter 11 work; Work as output voltage U
OutWhen U/3～2U/3, converter 11 and 12 work; Work as output voltage U
OutWhen 2U/3～U, converter 11,12 and 13 is worked simultaneously.The drive signal of in running order converter is identical, converter is in synchronous regime, and the AC wave shape of its output is identical, and the elementary winding of corresponding transformer T is equivalent to parallel connection, change elementary, the number of secondary turns ratio of transformer T, obtained higher output voltage.
As shown in Figure 2, be another embodiment of the present invention, present embodiment comprises: converter 21, converter 22, converter 23, high frequency transformer T, rectifier 24, and wherein: high frequency transformer T input winding has 3,1 of output winding, and centre tap is all arranged; Converter 21,22,23 parallel connections are input as U
In, three transformer configuration are identical, all are half-bridge converter, and each converter only needs two switching devices; Rectifier 24 is a half bridge rectifier, only needs two fast diodes, wherein U
OutWith U
1Need external-connected port, use for cascade controller.
As shown in Figure 3, driver module for 3 converters among Fig. 1 embodiment, selecting converter 11 is the basic transformation device, the output voltage of unscented transformation device 11 obtains next drive signal constantly of power-supply controller of electric, input to drive circuit through after the light-coupled isolation, optocoupler 1,2,3 is made up of four optical couplers respectively, the enable signal of four optical couplers is identical, and the cascade signal that optocoupler 1,2,3 enables is identical, by " independence/cascaded switch " or cascade controller control, and the selection signal that optocoupler 1,2,3 enables is by the scope decision of output voltage.When optical coupler does not enable,, be input to the signal of drive circuit all always for high through optical coupler no matter the drive signal of power-supply controller of electric output is high or low.Drive circuit is made up of chip for driving and driving transformer, chip for driving has strengthened the driving force of signal, the driving transformer primary side has a winding, primary side has two windings, with the drive signal that one group of TRANSFORMATION OF THE DRIVING is two groups of complementations, be used for driving upper and lower two switching devices of a brachium pontis.When optical coupler did not enable, the output of driving transformer can't produce voltage difference, also just can't the driving switch device, and switching device is in off state, and corresponding converter is not worked.Drive signal G
11, G
12, G
13, G
14Corresponding switching device S
11, S
12, S
13, S
14Drive signal G
21, G
22, G
23, G
24Corresponding switching device S
21, S
22, S
23, S
24Drive signal G
31, G
32, G
33, G
34Corresponding switching device S
31, S
32, S
33, S
34
Be illustrated in figure 4 as the cascade controller that can satisfy 3 Switching Power Supply cascades, FPGA provides clock and enable signal for the serial ports sampling A, and the clock of sampling 1,2,3 and enable signal are identical to guarantee the simultaneity of sampled data.During series operation, with each switch power source output voltage U
OutBe input to FPGA through over-sampling 1,2,3, FPGA is each output voltage relatively, obtain minimum output voltage, set the limit value of a permission, Switching Power Supply in limited field works on, and the cascade signal that surpasses the Switching Power Supply of limit value is low, and the optocoupler of all driver modules of this Switching Power Supply will not enable, this Switching Power Supply is in off position, and the data that at every turn sample output voltage will be carried out this operation; When in parallel, sampling output current U
1Compare, obtain minimum output current, set the limit value of a permission, Switching Power Supply in limits works on, the cascade signal that surpasses the Switching Power Supply of limit value is low, optocoupler will not enable in all driver modules of this Switching Power Supply, and the data that at every turn sample output current will be carried out this operation.The cascade signal 1,2,3 of cascade controller output is corresponding with the Switching Power Supply 1,2,3 of sampling.
Claims (9)
1. but the Switching Power Supply of the output cascade of a multiple transformer comprises: organize converter, rectifier, high frequency transformer, driver module, power-supply controller of electric more, all join controller, wherein: organize converter more and be used for direct current is converted to interchange; It is direct current that rectifier is used for exchange conversion; High frequency transformer is used to boost or step-down; Driver module is used to select the also switching device of driving transducer; Power-supply controller of electric is used to export the control signal of single power supply single; All join controller and be used for many these Switching Power Supplies of cascade.
2. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1 is characterized in that, described many group converters can adopt full-bridge converter or half-bridge converter, and to organize the structure of converter identical more.
3. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1 is characterized in that, described rectifier can adopt full-bridge rectification form or half-bridge rectification form.
4. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1, it is characterized in that, the quantity of the elementary winding of described high frequency transformer is identical with the quantity of many group converters, if adopt full-bridge converter, each elementary winding is without centre tap, if adopt half-bridge converter, each elementary winding need increase centre tap, the form of secondary winding is by the structures shape of rectifier, and full-bridge rectifier does not need centre tap, and half bridge rectifier needs centre tap.
5. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1, it is characterized in that, described driver module is by drive circuit, optocoupler, and the enable signal of optocoupler is formed, the corresponding drive circuit of each switching device, optocoupler and enable signal thereof, the enable signal of optocoupler is by selecting signal and cascade signal and decision behind the door, whether the control change device that enables by the control optocoupler works, when optocoupler does not enable, the output of driving transformer can't produce voltage difference, also just can't the driving switch device, switching device is in off state, and corresponding converter is not worked.
6. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1 is characterized in that, described power-supply controller of electric has only one, drives many group converters, and is synchronous to guarantee in running order many groups converter.
7. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1, it is characterized in that, many Switching Power Supplies of described cascade controller control, can make that many Switching Power Supplies are in parallel or the output of connecting, each Switching Power Supply is provided with sample port, the sample port of output current, cascade signal port, " independence/cascaded switch " of output voltage, if " independence/cascaded switch " is in " independence " state, cascade signal just is in height, and the enable signal of optocoupler is by selecting signal deciding; If " independence/cascaded switch " is in " cascade " state, will control this signal by cascade controller, make this Switching Power Supply operate as normal, output " height " cascade signal is not if this Switching Power Supply is worked output " low " cascade signal.
8. but the Switching Power Supply of the output cascade of multiple transformer according to claim 7, it is characterized in that, during the Switching Power Supply series connection, the sample port and the cascade signal port of each switch power source output voltage are connected to cascade controller, cascade controller is each output voltage relatively, obtain minimum output voltage, set the limit value of a permission, Switching Power Supply in limited field works on, the cascade signal that surpasses the Switching Power Supply of limit value is low, the optocoupler of all driver modules of this Switching Power Supply will not enable, and this Switching Power Supply is in failure state, and the data that at every turn sample output voltage will be carried out this operation; When Switching Power Supply is in parallel, the sampling output current compares, obtain minimum output current, set the limit value of a permission, Switching Power Supply in limits works on, the cascade signal that surpasses the Switching Power Supply of limit value is low, and optocoupler will not enable in all driver modules of this Switching Power Supply, and the data that at every turn sample output current will be carried out this operation.
9. but the Switching Power Supply of the output cascade of multiple transformer according to claim 1, it is characterized in that, selection signal in the optocoupler enable signal is by the output voltage decision of Switching Power Supply, each converter is a parallel-connection structure, voltage waveform to the input of high frequency transformer primary side winding is identical, keep synchronously, be equivalent to elementary winding parallel connection, thereby change the turn ratio of high frequency transformer primary side and primary side winding, the converter of work is many more, primary side and primary side turn ratio are low more, and output voltage is high more.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253193.8A CN102281007B (en) | 2011-08-30 | 2011-08-30 | Multi-transformer switch power supply with cascaded output |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110253193.8A CN102281007B (en) | 2011-08-30 | 2011-08-30 | Multi-transformer switch power supply with cascaded output |
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| CN102281007A true CN102281007A (en) | 2011-12-14 |
| CN102281007B CN102281007B (en) | 2014-01-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248249A (en) * | 2012-02-03 | 2013-08-14 | 青岛艾迪森科技有限公司 | Magnetic circuit-based parallel system of high power inverter |
| CN104836424A (en) * | 2015-05-18 | 2015-08-12 | 国家电网公司 | Energy router with cascaded module voltage automatic balancing circuit |
| CN104868752A (en) * | 2014-12-12 | 2015-08-26 | 武汉绿鼎天舒科技发展有限公司 | High-efficiency multifunctional lighting device |
| CN106329947A (en) * | 2016-08-30 | 2017-01-11 | 浙江菲达环保科技股份有限公司 | High-frequency and high-voltage power supply |
| CN108183517A (en) * | 2017-11-23 | 2018-06-19 | 全球能源互联网欧洲研究院 | A kind of centralization DC charging circuit and system |
| CN114244135A (en) * | 2021-12-18 | 2022-03-25 | 北京动力源科技股份有限公司 | High-power high-current isolation DC-DC circuit |
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| CN201369679Y (en) * | 2009-03-10 | 2009-12-23 | 东南大学 | Electronic transformer for electric power line |
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| KR20010088926A (en) * | 2001-08-07 | 2001-09-29 | 윤문수 | Pulsed or step-like high-voltage generator composed of semiconductor switches and high-frequency transformers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248249A (en) * | 2012-02-03 | 2013-08-14 | 青岛艾迪森科技有限公司 | Magnetic circuit-based parallel system of high power inverter |
| CN104868752A (en) * | 2014-12-12 | 2015-08-26 | 武汉绿鼎天舒科技发展有限公司 | High-efficiency multifunctional lighting device |
| CN104836424A (en) * | 2015-05-18 | 2015-08-12 | 国家电网公司 | Energy router with cascaded module voltage automatic balancing circuit |
| CN106329947A (en) * | 2016-08-30 | 2017-01-11 | 浙江菲达环保科技股份有限公司 | High-frequency and high-voltage power supply |
| CN108183517A (en) * | 2017-11-23 | 2018-06-19 | 全球能源互联网欧洲研究院 | A kind of centralization DC charging circuit and system |
| CN114244135A (en) * | 2021-12-18 | 2022-03-25 | 北京动力源科技股份有限公司 | High-power high-current isolation DC-DC circuit |
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Inventor after: Liu Chuang Inventor after: Li Qin Inventor after: Li Enshi Inventor after: Li Xuan Inventor after: Geng Chao Inventor after: Wan Shuchun Inventor after: Wang Yingying Inventor after: Zou Jianzhong Inventor after: Liu Guangmei Inventor before: Liu Chuang |
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