CN203788144U - Multipath interlaced parallel phase-shaft bidirectional CUK converter - Google Patents
Multipath interlaced parallel phase-shaft bidirectional CUK converter Download PDFInfo
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- CN203788144U CN203788144U CN201420113325.6U CN201420113325U CN203788144U CN 203788144 U CN203788144 U CN 203788144U CN 201420113325 U CN201420113325 U CN 201420113325U CN 203788144 U CN203788144 U CN 203788144U
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- cuk
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Abstract
The utility model aims at disclosing a multipath interlaced parallel phase-shaft bidirectional CUK converter which comprises at least one CUK bidirectional converter unit. The CUK bidirectional converter unit comprises a bridge circuit composed of a main switch tube Q1 and a freewheeling tube Q2, wherein the bridge circuit is isolated and driven by an isolation transformer, and the main switch tube Q1 and the freewheeling tube Q2 are driven by complementary PWM signals. Compared with the prior art, a freewheeling diode is replaced by an NMOS tube to realize synchronous rectification and bidirectional energy flow and improve the efficiency of the converter; and the power capacity of the converter is increased, the stress of power devices can be effectively dispersed, and the reliability of the converter is enhanced.
Description
Technical field
The utility model relates to a kind of non-isolated DC-DC converter, the two-way CUK converter of multichannel crisscross parallel phase shift that particularly a kind of voltage source that is applicable to two different voltages or the energy exchange between battery pack and energy can two-way flows.
Background technology
As shown in Figure 1, CUK chopper circuit also claims CUK converter, a kind of to the improved single tube of Buck/Boost isolated DC converter not, at input-output section, all there is inductance, can significantly reduce the pulsation of input and output electric current, polarity and the input voltage of output voltage are contrary, and output voltage both can be lower than also can be higher than input voltage.CUK converter can regard that Boost converter and Buck converter are in series, and have merged switching tube as.
Input power electric current and output load current are all continuous, and pulsation is very little, is conducive to input and output to carry out filtering.
But the power of existing CUK converter is not high, and converter cannot carry out energy in bidirectional flow.
Therefore, need especially the two-way CUK converter of a kind of multichannel crisscross parallel phase shift, to solve the above-mentioned existing problem existing.
Utility model content
The purpose of this utility model is to provide the phase shift of a kind of multichannel crisscross parallel two-way CUK converter, for the deficiencies in the prior art, has realized synchronous rectification, has improved power efficiency and the converter of converter and has realized energy in bidirectional flow.
The technical problem that the utility model solves can realize by the following technical solutions:
The two-way CUK converter of a kind of multichannel crisscross parallel phase shift, it is characterized in that, it comprises at least one CUK reversible transducer unit, described CUK reversible transducer unit comprises the bridge arm circuit that a main switch Q1 by isolating transformer isolation drive and continued flow tube Q2 form, and described main switch Q1 and continued flow tube Q2 are by the signal driver of complementary PWM.
In an embodiment of the present utility model, described CUK reversible transducer unit comprises main switch Q1, continued flow tube Q2, inductance L 1, inductance L 2, capacitor C, capacitor C 0 and capacitor C 1; One end of power supply V1 connects respectively one end of inductance L 1, one end of capacitor C 0, the other end of power supply V1 connect respectively the other end of capacitor C 0, one end of one end of main switch Q1, continued flow tube Q2, one end the ground connection of one end of capacitor C 1 and power supply V2, the other end of inductance L 1 connects respectively the other end of main switch Q1 and one end of capacitor C, the other end of capacitor C connects respectively the other end of continued flow tube Q2 and one end of inductance L 2, and the other end of inductance L 2 connects respectively the other end of capacitor C 1 and the other end of power supply V2.
In an embodiment of the present utility model, the two-way CUK converter of described multichannel crisscross parallel phase shift comprises at least two group CUK reversible transducer unit, and the phase shift that intermeshes between described CUK reversible transducer unit is connected in parallel.
In an embodiment of the present utility model, described main switch Q1 and continued flow tube Q2 are NMOS pipe.
The two-way CUK converter of multichannel crisscross parallel of the present utility model phase shift, compared with prior art, substitutes fly-wheel diode, thereby has realized synchronous rectification and energy in bidirectional flow with NMOS pipe, can improve the efficiency of converter; And effectively expanded the power capacity of converter, can also effectively disperse the stress of power device, improved the reliability of converter, realized the purpose of this utility model.
Feature of the present utility model can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained and be well understood to.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of existing CUK converter;
Fig. 2 is the circuit theory diagrams of the two-way CUK converter of multichannel crisscross parallel of the present utility model phase shift;
Fig. 3 is the circuit theory diagrams of two-way CUK converter unit of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment
As shown in Figure 2, the two-way CUK converter of multichannel crisscross parallel of the present utility model phase shift, it comprises at least one CUK reversible transducer unit, described CUK reversible transducer unit comprises the bridge arm circuit that a main switch Q1 by isolating transformer isolation drive and continued flow tube Q2 form, described main switch Q1 and continued flow tube Q2, by the signal driver of complementary PWM, have realized synchronous rectification and energy in bidirectional flow.
In the present embodiment, described CUK reversible transducer unit comprises main switch Q1, continued flow tube Q2, inductance L 1, inductance L 2, capacitor C, capacitor C 0 and capacitor C 1; One end of power supply V1 connects respectively one end of inductance L 1, one end of capacitor C 0, the other end of power supply V1 connect respectively the other end of capacitor C 0, one end of one end of main switch Q1, continued flow tube Q2, one end the ground connection of one end of capacitor C 1 and power supply V2, the other end of inductance L 1 connects respectively the other end of main switch Q1 and one end of capacitor C, the other end of capacitor C connects respectively the other end of continued flow tube Q2 and one end of inductance L 2, and the other end of inductance L 2 connects respectively the other end of capacitor C 1 and the other end of power supply V2.
In the present embodiment, the two-way CUK converter of described multichannel crisscross parallel phase shift comprises at least two group CUK reversible transducer unit, and the phase shift that intermeshes between described CUK reversible transducer unit is connected in parallel.
Use after the two-way CUK converter of the staggered phase shift parallel connection in N road as shown in Figure 3, power can increase N doubly, and because the operating frequency of the electric capacity of input and output has increased N doubly, the volume of electric capacity is compared with the element circuit of Same Efficieney with size, can significantly reduce.
In the present embodiment, described main switch Q1 and continued flow tube Q2 are NMOS pipe.
Voltage-current relationship and the calculating of CUK reversible transducer of the present utility model unit:
Vout?/?Vin=Ton?Q1?/TonQ2
When TonQ1=TonQ2, duty ratio=0.5 o'clock namely, Vout=Vin.
When TonQ1>TonQ2, namely during duty ratio >0.5, Vout>Vin, energy moves from left to right.
When TonQ2>TonQ1, namely during duty ratio <0.5, Vout<Vin, energy moves from right to left.
The two-way CUK converter of multichannel crisscross parallel of the present utility model phase shift, substitutes fly-wheel diode, thereby has realized synchronous rectification and energy in bidirectional flow with NMOS pipe, can improve the efficiency of converter; And effectively expanded the power capacity of converter, can also effectively disperse the stress of power device, improved the reliability of converter.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the two-way CUK converter of multichannel crisscross parallel phase shift, it is characterized in that, it comprises at least one CUK reversible transducer unit, described CUK reversible transducer unit comprises the bridge arm circuit that a main switch Q1 by isolating transformer isolation drive and continued flow tube Q2 form, and described main switch Q1 and continued flow tube Q2 are by the signal driver of complementary PWM.
2. the two-way CUK converter of multichannel crisscross parallel as claimed in claim 1 phase shift, is characterized in that, described CUK reversible transducer unit comprises main switch Q1, continued flow tube Q2, inductance L 1, inductance L 2, capacitor C, capacitor C 0 and capacitor C 1; One end of power supply V1 connects respectively one end of inductance L 1, one end of capacitor C 0, the other end of power supply V1 connect respectively the other end of capacitor C 0, one end of one end of main switch Q1, continued flow tube Q2, one end the ground connection of one end of capacitor C 1 and power supply V2, the other end of inductance L 1 connects respectively the other end of main switch Q1 and one end of capacitor C, the other end of capacitor C connects respectively the other end of continued flow tube Q2 and one end of inductance L 2, and the other end of inductance L 2 connects respectively the other end of capacitor C 1 and the other end of power supply V2.
3. the two-way CUK converter of multichannel crisscross parallel as claimed in claim 1 phase shift, it is characterized in that, the two-way CUK converter of described multichannel crisscross parallel phase shift comprises at least two group CUK reversible transducer unit, and the phase shift that intermeshes between described CUK reversible transducer unit is connected in parallel.
4. the two-way CUK converter of multichannel crisscross parallel as claimed in claim 1 phase shift, is characterized in that, described main switch Q1 and continued flow tube Q2 are NMOS pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113325.6U CN203788144U (en) | 2014-03-13 | 2014-03-13 | Multipath interlaced parallel phase-shaft bidirectional CUK converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113325.6U CN203788144U (en) | 2014-03-13 | 2014-03-13 | Multipath interlaced parallel phase-shaft bidirectional CUK converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788144U true CN203788144U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113325.6U Expired - Fee Related CN203788144U (en) | 2014-03-13 | 2014-03-13 | Multipath interlaced parallel phase-shaft bidirectional CUK converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203788144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901303A (en) * | 2015-05-29 | 2015-09-09 | 上海大学 | Bidirectional Cuk circuit-based voltage balancer |
| CN111064359A (en) * | 2019-12-23 | 2020-04-24 | 南京航空航天大学 | Wide-range bidirectional conversion circuit and control method |
-
2014
- 2014-03-13 CN CN201420113325.6U patent/CN203788144U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901303A (en) * | 2015-05-29 | 2015-09-09 | 上海大学 | Bidirectional Cuk circuit-based voltage balancer |
| CN111064359A (en) * | 2019-12-23 | 2020-04-24 | 南京航空航天大学 | Wide-range bidirectional conversion circuit and control method |
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Legal Events
| 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: 20140820 Termination date: 20160313 |