CN103337956A - Bidirectional buck converter - Google Patents
Bidirectional buck converter Download PDFInfo
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- CN103337956A CN103337956A CN2013102031476A CN201310203147A CN103337956A CN 103337956 A CN103337956 A CN 103337956A CN 2013102031476 A CN2013102031476 A CN 2013102031476A CN 201310203147 A CN201310203147 A CN 201310203147A CN 103337956 A CN103337956 A CN 103337956A
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- buck converter
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- sustained diode
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Abstract
The invention provides a bidirectional Buck converter. The bidirectional Buck converter comprises a positive-direction Buck converter and a negative-direction Buck converter, wherein the positive-direction Buck converter and the negative-direction Buck converter are in reverse series connection, and the positive-direction Buck converter and the negative-direction Buck converter share the same inductor L. Since the positive-direction Buck converter and the negative-direction Buck converter are combined and share the same inductor, the bidirectional Buck converter has the advantages of simple structure and low cost.
Description
Technical field
The invention belongs to the design of electronic circuits technical field, be specifically related to a kind of two-way Buck converter.
Background technology
The Buck converter be a kind of relatively simple for structure, use DC/DC buck converter very widely, especially be widely used in high-power voltage conversion occasion.
Along with the extensive use of power electronic equipment, in the electric energy transmission course, there is the application scenario of big energy two-way flow, for example: solar photovoltaic generation system, electric motor car EMS, communication are with standby power system etc.Therefore, by the Buck converter is improved, in the technology two-way Buck converter has appearred again now.
But existing two-way Buck converter uses a large amount of electronic devices, has the high deficiency of complex structure and cost.
Summary of the invention
Defective at prior art exists the invention provides a kind of two-way Buck converter, has simple in structure and the low advantage of cost.
The technical solution used in the present invention is as follows:
The invention provides a kind of two-way BUCK converter, comprise forward BUCK converter and negative sense BUCK converter; Described forward BUCK converter and described negative sense BUCK converter differential concatenation; Described forward BUCK converter and described negative sense BUCK converter share identical inductances L.
Preferably, described two-way BUCK converter comprises first power supply and second source; Described first positive source is connected with described second source positive pole and forms anodal circuit, and described first power cathode is connected with described second source negative pole and forms the negative pole circuit; Described inductance L is connected on described anodal circuit; Or described inductance L is connected on described negative pole circuit; Or described inductance L is split as first inductance L 1 and second inductance L 2, and described first inductance L 1 is connected on described anodal circuit, and described second inductance L 2 is connected on described negative pole circuit.
Preferably, described forward BUCK converter is made up of first capacitor C 1, the first power tube Q1, first sustained diode 1 and described inductance L; Described first capacitor C 1 is connected in parallel on the two ends of described first power supply; Be connected in parallel on the two ends of described first capacitor C 1 after the described first power tube Q1 and 1 series connection of described first sustained diode; Wherein, the negative electrode of described first sustained diode 1 is connected with described anodal circuit, and tie point is P1; The anode of described first sustained diode 1 is connected with described negative pole circuit, and tie point is P2;
Described negative sense BUCK converter is made up of second capacitor C 2, the second power tube Q2, second sustained diode 2 and described inductance L; Described second capacitor C 2 is connected in parallel on the two ends of described second source; Be connected in parallel on the two ends of described second capacitor C 2 after the described second power tube Q2 and 2 series connection of described second sustained diode; Wherein, the negative electrode of described second sustained diode 2 is connected with described anodal circuit, and tie point is P3; The anode of described second sustained diode 2 is connected with described negative pole circuit, and tie point is P4;
Described inductance L is connected on the circuit P1P3; Perhaps, described inductance L is connected on the circuit P2P4; Perhaps described first inductance L 1 is connected on the circuit P1P3, and described second inductance L 2 is connected on the circuit P2P4.
Preferably, the described first power tube Q1 and described first sustained diode, 1 series system are: the negative electrode series connection of the anode of the described first power tube Q1 and described first sustained diode 1.
Preferably, the described first power tube Q1 and described first sustained diode, 1 series system are: the anode series connection of the negative electrode of the described first power tube Q1 and described first sustained diode 1.
Preferably, the described second power tube Q2 and described second sustained diode, 2 series systems are: the negative electrode series connection of the anode of the described second power tube Q2 and described second sustained diode 2.
Preferably, the described second power tube Q2 and described second sustained diode, 2 series systems are: the anode series connection of the negative electrode of the described second power tube Q2 and described second sustained diode 2.
Beneficial effect of the present invention is as follows:
The invention provides a kind of two-way Buck converter, forward BUCK converter and negative sense BUCK converter are merged, and forward BUCK converter and negative sense BUCK converter share same inductance, therefore, have simple in structure and the low advantage of cost.
Description of drawings
Fig. 1 is first kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 2 is second kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 3 is the third circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 4 is the 4th kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 5 is the 5th kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 6 is the 6th kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 7 is the 7th kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 8 is the 8th kind of circuit theory diagrams of two-way Buck converter provided by the invention;
Fig. 9 is the 9th kind of circuit theory diagrams of two-way Buck converter provided by the invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing:
The invention provides a kind of two-way BUCK converter, comprise forward BUCK converter and negative sense BUCK converter; Forward BUCK converter and negative sense BUCK converter differential concatenation; And forward BUCK converter and negative sense BUCK converter share identical inductances L.
Concrete, two-way BUCK converter comprises first power supply and second source; First positive source is connected with the second source positive pole and forms anodal circuit, and first power cathode is connected with the second source negative pole and forms the negative pole circuit; Inductance L can have following three kinds of connected modes: (1) inductance L is connected on anodal circuit; (2) inductance L is connected on the negative pole circuit; (3) inductance L is split as first inductance L 1 and second inductance L, 2, the first inductance L 1 are connected on anodal circuit, and second inductance L 2 is connected on the negative pole circuit.As shown in Figure 2, be at positive polar road and the negative pole circuit circuit diagram of series inductance respectively.
Below forward BUCK converter and negative sense BUCK converter are introduced respectively in detail:
(1) forward BUCK converter
Forward BUCK converter is made up of first capacitor C 1, the first power tube Q1, first sustained diode 1 and inductance L; First capacitor C 1 is connected in parallel on the two ends of first power supply; Be connected in parallel on the two ends of first capacitor C 1 after the first power tube Q1 and 1 series connection of first sustained diode; Wherein, the negative electrode of first sustained diode 1 is connected with anodal circuit, and tie point is P1; The anode of first sustained diode 1 is connected with the negative pole circuit, and tie point is P2; Wherein, the first power tube Q1 and first sustained diode, 1 series system comprise following two kinds: (1) series connection A mode--the anode of-the first power tube Q1 and the series connection of the negative electrode of first sustained diode 1.(2) series connection B mode--the negative electrode of-the first power tube Q1 and the series connection of the anode of first sustained diode 1.
(2) negative sense BUCK converter
Negative sense BUCK converter is made up of second capacitor C 2, the second power tube Q2, second sustained diode 2 and inductance L; Second capacitor C 2 is connected in parallel on the two ends of second source; Be connected in parallel on the two ends of second capacitor C 2 after the second power tube Q2 and 2 series connection of second sustained diode; Wherein, the negative electrode of second sustained diode 2 is connected with anodal circuit, and tie point is P3; The anode of second sustained diode 2 is connected with the negative pole circuit, and tie point is P4; Wherein, the second power tube Q2 and second sustained diode, 2 series systems comprise following two kinds: (1) series connection C mode--the anode of-the second power tube Q2 and the series connection of the negative electrode of second sustained diode 2.(2) series connection D mode--the negative electrode of-the second power tube Q2 and the series connection of the anode of second sustained diode 2.
Three kinds of types of attachment of inductance L are: (1) connection A form---inductance L can be connected on the circuit P1P3; (2) connection B form---inductance L is connected on the circuit P2P4; (3) connection C form--inductance L is split as first inductance L 1 and second inductance L 2, and wherein, first inductance L 1 is connected on the circuit P1P3, and second inductance L 2 is connected on the circuit P2P4.
Among the present invention, two kinds of series systems of the first power tube Q1 and first sustained diode 1: series connection A mode, series connection B mode; Two kinds of series system series connection C modes of the second power tube Q2 and second sustained diode 2, series connection D mode; And, three kinds of types of attachment of inductance L: connect the A form, connect the B form and be connected the C form; The following formula variety of way can combination in any, and for example: Fig. 1 is: series connection A mode+connection A form+series connection C mode; Fig. 2 is: series connection A mode+connection C form+series connection C mode; Fig. 3 is: series connection B mode+connection B form+series connection D mode; Fig. 4 is: series connection B mode+connection A form+series connection D mode; Fig. 5 is: series connection A mode+connection B form+series connection C mode; Fig. 6 is: series connection A mode+connection A form+series connection D mode; Fig. 7 is: series connection A mode+connection B form+series connection D mode; Fig. 8 is: series connection B mode+connection B form+series connection C mode; Fig. 9 is: series connection B mode+connection A form+series connection C mode.
Two-way Buck converter provided by the invention; can control positive terminal voltage, negative terminal voltage simultaneously; forward current and negative current; effectively system is carried out the voltage and current protection, and, forward BUCK converter and negative sense BUCK converter are merged; and; forward BUCK converter and negative sense BUCK converter share same inductance, therefore, have simple in structure and the low advantage of cost.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (7)
1. a two-way BUCK converter is characterized in that, comprises forward BUCK converter and negative sense BUCK converter; Described forward BUCK converter and described negative sense BUCK converter differential concatenation; Described forward BUCK converter and described negative sense BUCK converter share identical inductances L.
2. two-way BUCK converter according to claim 1 is characterized in that, described two-way BUCK converter comprises first power supply and second source; Described first positive source is connected with described second source positive pole and forms anodal circuit, and described first power cathode is connected with described second source negative pole and forms the negative pole circuit; Described inductance L is connected on described anodal circuit; Or described inductance L is connected on described negative pole circuit; Or described inductance L is split as first inductance L 1 and second inductance L 2, and described first inductance L 1 is connected on described anodal circuit, and described second inductance L 2 is connected on described negative pole circuit.
3. two-way BUCK converter according to claim 2 is characterized in that, described forward BUCK converter is made up of first capacitor C 1, the first power tube Q1, first sustained diode 1 and described inductance L; Described first capacitor C 1 is connected in parallel on the two ends of described first power supply; Be connected in parallel on the two ends of described first capacitor C 1 after the described first power tube Q1 and 1 series connection of described first sustained diode; Wherein, the negative electrode of described first sustained diode 1 is connected with described anodal circuit, and tie point is P1; The anode of described first sustained diode 1 is connected with described negative pole circuit, and tie point is P2;
Described negative sense BUCK converter is made up of second capacitor C 2, the second power tube Q2, second sustained diode 2 and described inductance L; Described second capacitor C 2 is connected in parallel on the two ends of described second source; Be connected in parallel on the two ends of described second capacitor C 2 after the described second power tube Q2 and 2 series connection of described second sustained diode; Wherein, the negative electrode of described second sustained diode 2 is connected with described anodal circuit, and tie point is P3; The anode of described second sustained diode 2 is connected with described negative pole circuit, and tie point is P4;
Described inductance L is connected on the circuit P1P3; Perhaps, described inductance L is connected on the circuit P2P4; Perhaps described first inductance L 1 is connected on the circuit P1P3, and described second inductance L 2 is connected on the circuit P2P4.
4. two-way BUCK converter according to claim 3 is characterized in that, the described first power tube Q1 and described first sustained diode, 1 series system are: the negative electrode series connection of the anode of the described first power tube Q1 and described first sustained diode 1.
5. two-way BUCK converter according to claim 3 is characterized in that, the described first power tube Q1 and described first sustained diode, 1 series system are: the anode series connection of the negative electrode of the described first power tube Q1 and described first sustained diode 1.
6. two-way BUCK converter according to claim 3 is characterized in that, the described second power tube Q2 and described second sustained diode, 2 series systems are: the negative electrode series connection of the anode of the described second power tube Q2 and described second sustained diode 2.
7. two-way BUCK converter according to claim 3 is characterized in that, the described second power tube Q2 and described second sustained diode, 2 series systems are: the anode series connection of the negative electrode of the described second power tube Q2 and described second sustained diode 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102031476A CN103337956A (en) | 2013-05-28 | 2013-05-28 | Bidirectional buck converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102031476A CN103337956A (en) | 2013-05-28 | 2013-05-28 | Bidirectional buck converter |
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| CN103337956A true CN103337956A (en) | 2013-10-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944376A (en) * | 2014-05-09 | 2014-07-23 | 重庆大学 | Isolation type equalization circuit based on bus type equalization network |
| CN105141168A (en) * | 2014-05-28 | 2015-12-09 | 株洲变流技术国家工程研究中心有限公司 | Multifunctional converter device with wide adaptation range |
| CN110504835A (en) * | 2019-08-26 | 2019-11-26 | 广州金升阳科技有限公司 | A kind of switch converters and its control method |
| CN115001120A (en) * | 2022-08-03 | 2022-09-02 | 合肥华思系统有限公司 | Multi-battery-pack parallel circuit for efficient energy storage system, control method and system |
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| US20030042880A1 (en) * | 2001-08-29 | 2003-03-06 | Toyota Jidosha Kabushiki Kaisha | DC-DC converter |
| JP3402254B2 (en) * | 1999-05-21 | 2003-05-06 | トヨタ自動車株式会社 | Bidirectional DC-DC converter |
| CN1445914A (en) * | 2000-12-04 | 2003-10-01 | Nec东金株式会社 | Symmetrical DC/DC converter |
| JP2012205427A (en) * | 2011-03-25 | 2012-10-22 | Shindengen Electric Mfg Co Ltd | Bi-directional converter and method of controlling the same |
| CN103269116A (en) * | 2013-04-09 | 2013-08-28 | 中国人民解放军重庆通信学院 | Bidirectional Buck transformer-based super capacitor and storage battery hybrid energy storage photovoltaic system |
| CN203251225U (en) * | 2013-05-28 | 2013-10-23 | 北京联动天翼科技有限公司 | Bi-directional Buck converter |
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2013
- 2013-05-28 CN CN2013102031476A patent/CN103337956A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3402254B2 (en) * | 1999-05-21 | 2003-05-06 | トヨタ自動車株式会社 | Bidirectional DC-DC converter |
| CN1445914A (en) * | 2000-12-04 | 2003-10-01 | Nec东金株式会社 | Symmetrical DC/DC converter |
| US20030042880A1 (en) * | 2001-08-29 | 2003-03-06 | Toyota Jidosha Kabushiki Kaisha | DC-DC converter |
| JP2012205427A (en) * | 2011-03-25 | 2012-10-22 | Shindengen Electric Mfg Co Ltd | Bi-directional converter and method of controlling the same |
| CN103269116A (en) * | 2013-04-09 | 2013-08-28 | 中国人民解放军重庆通信学院 | Bidirectional Buck transformer-based super capacitor and storage battery hybrid energy storage photovoltaic system |
| CN203251225U (en) * | 2013-05-28 | 2013-10-23 | 北京联动天翼科技有限公司 | Bi-directional Buck converter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944376A (en) * | 2014-05-09 | 2014-07-23 | 重庆大学 | Isolation type equalization circuit based on bus type equalization network |
| CN105141168A (en) * | 2014-05-28 | 2015-12-09 | 株洲变流技术国家工程研究中心有限公司 | Multifunctional converter device with wide adaptation range |
| CN105141168B (en) * | 2014-05-28 | 2017-11-14 | 株洲变流技术国家工程研究中心有限公司 | A kind of multi-functional converter device of wide accommodation |
| CN110504835A (en) * | 2019-08-26 | 2019-11-26 | 广州金升阳科技有限公司 | A kind of switch converters and its control method |
| CN110504835B (en) * | 2019-08-26 | 2021-09-14 | 广州金升阳科技有限公司 | Switch converter and control method thereof |
| CN115001120A (en) * | 2022-08-03 | 2022-09-02 | 合肥华思系统有限公司 | Multi-battery-pack parallel circuit for efficient energy storage system, control method and system |
| CN115001120B (en) * | 2022-08-03 | 2022-10-25 | 合肥华思系统有限公司 | Multi-battery-pack parallel circuit for efficient energy storage system, control method and system |
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Application publication date: 20131002 |
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