CN206452299U - A kind of converter - Google Patents
A kind of converter Download PDFInfo
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- CN206452299U CN206452299U CN201621475693.0U CN201621475693U CN206452299U CN 206452299 U CN206452299 U CN 206452299U CN 201621475693 U CN201621475693 U CN 201621475693U CN 206452299 U CN206452299 U CN 206452299U
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- inversion
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Abstract
The utility model embodiment discloses a kind of converter, including：Rectification filtering module and inversion control module, in addition at least two inversion modules and transformer；Transformer includes at least two first side windings and a secondary side winding, and at least two first side windings are connected with the output end of at least two inversion modules respectively；At least two inversion modules, its input is connected in parallel dc source, for being exchange electricity output by the DC inverter of input；The secondary winding connection of the input and transformer of rectification filtering module, for the alternating current of the secondary winding output of transformer to be converted into direct current electricity output to load；Inversion control module and the connection of at least two inversion modules, for drive signal to be sent at least two inversion modules, frequency, dutycycle and the phase of the alternating current of control inversion generation.The technical scheme of the utility model embodiment, is superimposed realization by many inversion module magnetic fluxs and avoids leading directly to risk across inverter bridge, simplify hardware circuit, reduce cost.
Description
Technical field
The utility model embodiment is related to Power Electronic Technique, more particularly to a kind of converter.
Background technology
Converter, is that the information for sending information source enters line translation by certain purpose.In powerful power conversion circuit
In, it is general to use multi-channel converter Parallel opertation.
As shown in figure 1, a kind of typical transformer configuration of prior art, mainly includes：Inversion module 110, transformer
120th, rectification circuit 130, filter circuit 140 and inversion control module 150, the point in parallel of traditional multi-channel converter crisscross parallel
It is to be required for using an independent transformer after bus and Circuit Fault on Secondary Transformer rectification circuit, and per road converter, such as
Shown in Fig. 1, by taking two converters as an example.
In the prior art, the switching device in converter often selects high current IGBT.But, it is limited to IGBT device special
Property, switching frequency can only typically accomplish highest 20kHz~30kHz.When output stability requires very high, final output side needs
Electric capacity using inductance/big capacitance of big sensibility reciprocal is filtered as filter circuit, but so does equipment cumulative volume by increase, is increased
Plus the device of hardware circuit, cause cost to increase.
Utility model content
The utility model embodiment provides a kind of converter, to realize simplified circuit, reduces cost.
The utility model embodiment provides a kind of converter, including：Rectification filtering module and inversion control module, are also wrapped
Include at least two inversion modules and transformer；
The transformer include at least two first side windings and a secondary side winding, primary side described at least two around
Group is connected with the output end of at least two inversion module respectively；
At least two inversion module, its input is connected in parallel dc source, for by the DC inverter of input
For exchange electricity output；
The secondary winding connection of the input of the rectification filtering module and the transformer, for by the transformer
The alternating current of secondary winding output is converted to direct current electricity output to load；
The inversion control module and at least two inversion module connection, for by drive signal send to it is described extremely
Few two inversion modules, frequency, dutycycle and the phase of the alternating current of control inversion generation.
Further, at least two inversion modules specification is identical.
Further, the topology of the inversion module is resonance, flyback, normal shock or recommended.
Further, the equal turn numbers of at least two first side windings of the transformer.
The utility model is superimposed by many inversion module magnetic fluxs, and solving multi-channel converter crisscross parallel needs multiple transformers
And the problem of rectification circuit, realize and simplify hardware circuit, reduce the effect of cost.
Brief description of the drawings
Fig. 1 is the transformer configuration schematic diagram of prior art；
Fig. 2 is a kind of transformer configuration schematic diagram in the utility model embodiment；
Fig. 3 is the voltage waveform view in the utility model embodiment；
Fig. 4 is the voltage waveform view in the utility model embodiment.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than limits of the present utility model.Further need exist for
It is bright, for the ease of description, the part related to the utility model rather than entire infrastructure are illustrate only in accompanying drawing.
Embodiment
Fig. 2 is a kind of converter that the utility model embodiment one is provided, and the converter can be used for DC-to-dc and turn
Change, as shown in Fig. 2 converter includes：Rectification filtering module 210 and inversion control module 220, in addition at least two inversion moulds
Block 230 and transformer 240；
Transformer 240 include at least two first side windings and a secondary side winding, primary side described at least two around
Group is connected with the output end of at least two inversion modules 230 respectively；
At least two inversion modules 230, its input is connected in parallel dc source, for being by the DC inverter of input
Exchange electricity output；
The secondary winding connection of the input of rectification filtering module 210 and transformer 240, for by the two of transformer 240
The alternating current of secondary winding output is converted to direct current electricity output to load；
The inversion module 230 of inversion control module 220 and at least two is connected, for drive signal to be sent at least two
Inversion module 230, frequency, dutycycle and the phase of the alternating current of control inversion generation.
Wherein, in Fig. 2 exemplified by configuring two inversion modules in converter, inversion control module 220 is sent at least two
The drive signal of individual inversion module 230 is used for the break-make for controlling the switching tube in inversion module, so as to control inversion module 230 inverse
Become frequency, dutycycle and the phase of the alternating current of generation.The topology of inversion module 230 can be resonance, flyback, normal shock or push away
Draw, the direct current of input is converted to exchange electricity output to transformation by inversion module 230 under the control of inversion control module 220
Device 240, the alternating current of at least two inversion modules 230 output carries out magnetic flux superposition, transformer 240 2 times in transformer 240
The alternating voltage at side winding two ends is exported to rectification filtering module 210, rectification filtering module 210 by the secondary side of transformer 240 around
The alternating voltage at group two ends is output as direct current after passing through rectifying and wave-filtering.
The technical scheme of the present embodiment, is superimposed by many inversion module magnetic fluxs, and solving multi-channel converter crisscross parallel needs
The problem of multiple transformers and rectification circuit, realize and simplify hardware circuit, reduce the effect of cost.
Optionally, the specification of at least two inversion module 230 is identical, and inversion control module 220 can control at least two inverse
Become the output frequency of module 230 equal, and dutycycle identical alternating current.Further, at least two primary sides of transformer 240
The equal turn numbers of winding.When the quantity of inversion module 230 is n (n is the integer more than 1), the control of inversion control module 220 n
The output frequency of inversion module 230 is equal, and dutycycle identical alternating current, and the alternating current of the output of each inversion module 230
Phase differs phase angle successivelyWherein,In such cases, the friendship at the secondary side winding two ends of transformer 240
The frequency of stream electricity is n times of the frequency of the alternating current at first side winding two ends.
Example, so that inversion module 230 adds resonance circuit (LC series resonances) for inverter bridge as an example, the input of inverter bridge
As the input of inversion module, the DC inverter of input is square wave alternating-current electricity by inverter bridge, then by resonator, conversion
For simple alternating current electricity output.
As n=2, for ease of distinguish by 2 inversion modules be designated as inversion module 1 (including the resonant cavity 1 of inverter bridge 1) and
Inversion module 2 (including the resonant cavity 2 of inverter bridge 2), connects the first side winding 1 and first side winding 2 of transformer, input respectively
The electric frequency of square wave alternating-current and dutycycle to the resonant cavity 2 of resonator 1 is equal, inputs to the electric phase of square wave alternating-current of resonator 2
Input is compared to electric 180 ° of the delayed phase of square wave alternating-current of resonator 1 in position, as shown in figure 3, Circuit Fault on Secondary Transformer winding two ends are electric
Press as 2 times of first side winding both end voltage.
As n=3, for ease of distinguish by 3 inversion modules be designated as inversion module 1 (including the resonant cavity 1 of inverter bridge 1),
Inversion module 2 (including the resonant cavity 2 of inverter bridge 2) and inversion module 3 (including the resonant cavity 3 of inverter bridge 3), connect transformation respectively
First side winding 1, first side winding 2 and the first side winding 3 of device, input to resonator 1, the square wave of the resonant cavity 3 of resonator 2
Ac frequency and dutycycle are equal, input to square wave of the electric phase of square wave alternating-current compared to input to resonator 1 of resonator 2
Delayed 120 ° of alternating current phases, are inputted to square wave alternating-current electricity of the electric phase of square wave alternating-current compared to input to resonator 2 of resonator 3
120 ° of delayed phase, as shown in figure 4, Circuit Fault on Secondary Transformer winding both end voltage is 3 times of first side winding both end voltage.
It is how inverse when different inversion module drivings meets aforementioned condition from the voltage waveform shown in Fig. 3 and Fig. 4
Become the superposition of module magnetic flux and times yupin effect can be achieved, so as to improve the power density of converter output voltage.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carried out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although pass through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (4)
1. a kind of converter, including：Rectification filtering module and inversion control module, it is characterised in that also inverse including at least two
Become module and transformer；
The transformer includes at least two first side windings and a secondary side winding, first side winding described at least two point
Output end not with least two inversion module is connected；
At least two inversion module, its input is connected in parallel dc source, for the DC inverter of input to be handed over
Flow electricity output；
The secondary winding connection of the input of the rectification filtering module and the transformer, for by the secondary of the transformer
The alternating current of winding output is converted to direct current electricity output to load；
The inversion control module and at least two inversion module connection, for drive signal to be sent to described at least two
Individual inversion module, frequency, dutycycle and the phase of the alternating current of control inversion generation.
2. converter according to claim 1, it is characterised in that at least two inversion modules specification is identical.
3. converter according to claim 1, it is characterised in that the topology of the inversion module is resonance, flyback, normal shock
Or recommend.
4. converter according to claim 1, it is characterised in that the circle of at least two first side windings of the transformer
Number is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621475693.0U CN206452299U (en) | 2016-12-30 | 2016-12-30 | A kind of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621475693.0U CN206452299U (en) | 2016-12-30 | 2016-12-30 | A kind of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206452299U true CN206452299U (en) | 2017-08-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621475693.0U Active CN206452299U (en) | 2016-12-30 | 2016-12-30 | A kind of converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN206452299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768726A (en) * | 2017-11-06 | 2019-05-17 | 哈尔滨工业大学（威海） | It is a kind of can under illumination bad condition efficiency operation solar inverter |
-
2016
- 2016-12-30 CN CN201621475693.0U patent/CN206452299U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768726A (en) * | 2017-11-06 | 2019-05-17 | 哈尔滨工业大学（威海） | It is a kind of can under illumination bad condition efficiency operation solar inverter |
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Address after: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |