CN206195649U - High frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks - Google Patents
High frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks Download PDFInfo
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- CN206195649U CN206195649U CN201621266196.XU CN201621266196U CN206195649U CN 206195649 U CN206195649 U CN 206195649U CN 201621266196 U CN201621266196 U CN 201621266196U CN 206195649 U CN206195649 U CN 206195649U
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- bridge arm
- bridge
- inverter
- switching tube
- parallel
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Abstract
The utility model provides a high frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks, adopts a plurality of low frequency of operation's voltage type single -phase bridge type parallel inverter, and each voltage type single -phase bridge type dc -to -ac converter includes two parallelly connected bridge arms, and the upper and lower bridge arm of every bridge arm all includes switch tube V, switch tube and diode VD inverse parallel, condenser C1 is connected to the direct current side of two parallelly connected bridge arms, the output and resistance R of the mid point output conduct dc -to -ac converter of two bridge arms, and inductance L and transformer U establish ties, the utility model discloses a plurality of lower frequency of operation's single -phase voltage type dc -to -ac converter carries out parallel combination, and the working method of switch tube then adopts " the timesharing is crisscross " to feasible whole improves the output frequence of inverter, and the output frequence that can make the single -phase inversion device obtains N and doubly improves.
Description
Technical field
The utility model is related to the high frequency output for being widely used in the multiple fields such as high-frequency induction heating, high-frequency welding inverse
Become device, the high frequency output inverter high frequency output inverter of more particularly to a kind of superimposing technique of interlocking based on timesharing.
Background technology
High frequency output inverter is quite varied in many applications such as sensing heating, welding, plasma generations.At present,
The high-power high-frequency output inverter device that the country uses, also relies primarily on import.
Restrict high-power inverter high frequency output major reason, be the power electronic element of inverter switching loss,
The problems such as switching speed and dead band.It is many using voltage-type multiple inverter parallel, transformer combination and intermittent wheel both at home and abroad at present
Change jobs mode, to realize high frequency and high-power output.Although this is solved using single inverter high frequency to a certain extent
Problems of excessive heat caused by the switching loss of power electronic element is excessive during work, but it is outstanding not solve switching speed fundamentally
It is the restriction of dead-time problem.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model be provide one kind interlocked based on timesharing it is folded
Plus the high frequency output inverter of technology, parallel combination is carried out with the single-phase electricity die mould inverter of multiple relatively low working frequencies, use
Timesharing interlocks superposition, the output frequency of single-phase inversion device can be made to obtain N times and improved；The utility model can be relatively low with cost
, the power switch component of relatively low working frequency, realize the high frequency output of DC-to-AC converter.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of high frequency output inverter of superimposing technique of being interlocked based on timesharing, using the voltage-type list of multiple low working frequencies
Phase bridge-type inverter is in parallel, and each voltage-type single-phase bridge type inverter includes two bridge arms of parallel connection, the upper bridge of the first bridge arm
Arm includes switching tube V11, switching tube V11With diode VD11Inverse parallel；The lower bridge arm of the first bridge arm includes switching tube V13, switching tube
V13With diode VD13Inverse parallel, similarly, the upper bridge arm of the second bridge arm includes switching tube V12, switching tube V12With diode VD12Instead
It is in parallel；The lower bridge arm of the second bridge arm includes switching tube V14, switching tube V14With diode VD14Inverse parallel, two bridge arms in parallel it is straight
Stream side connects capacitor C1, the first bridge arm, the midpoint output of the second bridge arm are exported and resistance R as the output of inverter1, inductance
L1And transformer U1Series connection.
The voltage-type single-phase bridge type inverter of the multiple low working frequencies of described use is in parallel, and its quantity is more than or equal to 3
Odd number.
The utility model carries out parallel combination using the single-phase electricity die mould inverter of multiple relatively low working frequencies, switching tube
Working method then uses " timesharing interlocks ", to cause the overall output frequency for improving inverter, can make single-phase inversion device
Output frequency obtain N times and improve.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is 5 voltage-type single-phase bridge type inverters of the utility model embodiment operating diagram in parallel.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
Explanation is introduced by taking 5 single-phase bridge type inverter parallel connections as an example, as shown in Figure 2.It should be appreciated that of the present utility model
Can also be in parallel using more single-phase bridge type inverters, as long as its quantity is odd number more than or equal to 3 just may be used.
Reference picture 1, Fig. 2, a kind of high frequency output inverter of superimposing technique of being interlocked based on timesharing, using 5 low work frequently
The voltage-type single-phase bridge type inverter of rate is in parallel, and each voltage-type single-phase bridge type inverter includes two bridge arms of parallel connection, the
The upper bridge arm of one bridge arm includes switching tube V11, switching tube V11With diode VD11Inverse parallel；The lower bridge arm of the first bridge arm includes opening
Close pipe V13, switching tube V13With diode VD13Inverse parallel, similarly, the upper bridge arm of the second bridge arm includes switching tube V12, switching tube V12
With diode VD12Inverse parallel；The lower bridge arm of the second bridge arm includes switching tube V14, switching tube V14With diode VD14Inverse parallel, two
The DC side connection capacitor C of individual bridge arm in parallel1, the first bridge arm, the midpoint of the second bridge arm are exported as the output of inverter, defeated
Go out and resistance R1, inductance L1And transformer U1Series connection.
Operation principle of the present utility model is：
Reference picture 2, at 0 moment, to first switching tube V of inverter bridge11, V14Drive signal, switching tube V11, V14It is open-minded；
In t1Moment, to second switching tube V of inverter bridge22, V23Drive signal, switching tube V22, V23It is open-minded；In t2Moment, to the 3rd
The switching tube V of individual inverter bridge31, V34Drive signal, switching tube V31, V34It is open-minded；In t3Moment, to the 4th switch of inverter bridge
Pipe V42, V43Drive signal, switching tube V42, V43It is open-minded；In t4Moment, to the 5th switching tube V of inverter bridge51, V54Drive letter
Number, switching tube V51, V54It is open-minded；In t5Moment, to first switching tube V of inverter bridge12, V13Drive signal, switching tube V12, V13
It is open-minded；In t6Moment, to second switching tube V of inverter bridge21, V24Drive signal, switching tube V21, V24It is open-minded；... afterwards with
This analogizes.It is obvious, for each inverter bridge, due to time-sharing work, only worked 1 time in work period each switch element,
But can obtain such as u in Fig. 2oThe output overlaid waveforms of shown 5 times.
Switch element due to each inverter bridge and discontinuous work again, but staggeredly carry out, this is not only very beneficial for
The switching speed requirements to switch element are reduced, and without specially setting Dead Time between two groups of commutation elements, so that
The more convenient overall high frequency output for improving whole converting means.
Claims (2)
1. a kind of high frequency output inverter of superimposing technique of being interlocked based on timesharing, it is characterised in that use multiple low working frequencies
Voltage-type single-phase bridge type inverter it is in parallel, each voltage-type single-phase bridge type inverter includes two bridge arms of parallel connection, first
The upper bridge arm of bridge arm includes switching tube V11, switching tube V11With diode VD11Inverse parallel；The lower bridge arm of the first bridge arm includes switch
Pipe V13, switching tube V13With diode VD13Inverse parallel, similarly, the upper bridge arm of the second bridge arm includes switching tube V12, switching tube V12With
Diode VD12Inverse parallel；The lower bridge arm of the second bridge arm includes switching tube V14, switching tube V14With diode VD14Inverse parallel, two
The DC side connection capacitor C of bridge arm in parallel1, the first bridge arm, the midpoint output of the second bridge arm are exported as the output of inverter
With resistance R1, inductance L1And transformer U1Series connection.
2. the high frequency output inverter of a kind of superimposing technique of being interlocked based on timesharing according to claim 1, it is characterised in that
The voltage-type single-phase bridge type inverter of the multiple low working frequencies of described use is in parallel, and its quantity is the odd number more than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266196.XU CN206195649U (en) | 2016-11-24 | 2016-11-24 | High frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266196.XU CN206195649U (en) | 2016-11-24 | 2016-11-24 | High frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195649U true CN206195649U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621266196.XU Expired - Fee Related CN206195649U (en) | 2016-11-24 | 2016-11-24 | High frequency output dc -to -ac converter based on timesharing superimposing technique that interlocks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114430241A (en) * | 2022-04-01 | 2022-05-03 | 杭州禾迈电力电子股份有限公司 | Three-phase inverter and control method thereof |
-
2016
- 2016-11-24 CN CN201621266196.XU patent/CN206195649U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114430241A (en) * | 2022-04-01 | 2022-05-03 | 杭州禾迈电力电子股份有限公司 | Three-phase inverter and control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170524 Termination date: 20171124 |