CN208691142U - Pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter - Google Patents
Pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter Download PDFInfo
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- CN208691142U CN208691142U CN201821297441.2U CN201821297441U CN208691142U CN 208691142 U CN208691142 U CN 208691142U CN 201821297441 U CN201821297441 U CN 201821297441U CN 208691142 U CN208691142 U CN 208691142U
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- power supply
- frequency converter
- explosion
- excitation type
- direct current
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Abstract
The utility model relates to the pair transistor inverse-excitation type high-voltage direct current switch power supply devices for explosion-proof frequency converter, which is characterized in that the output connection driving transformer T1 of control chip A1, A1 including Switching Power Supply respectively drive connection two switching tubes V1, V2；The switching tube V1 constitutes pair transistor inverse excitation type converter topological structure by diode D4, D5 and switch transformer T2 connection by diode D3, D6 and switch transformer T2 connection, switching tube V2；The secondary side output rectification circuit of switch transformer T2；It is equipped between switching tube V1 and diode D3, D6 by capacitor C24, C25；The RC absorbing circuit that resistance R43~R57 is composed in series；It is equipped between the switching tube V2 and diode D4, D5 by capacitor C26, C29；The RC absorbing circuit that resistance R58~R72 is composed in series, directly absorbs on bus.The utility model simplifies frequency converter hardware circuit, reduces overall cost, increases reliability.
Description
[technical field]
The utility model relates to high-voltage direct current switch power technique fields, are particularly used for the twin crystal of explosion-proof frequency converter
Body pipe inverse-excitation type high-voltage direct current switch power supply device.
[background technique]
Switching Power Supply is indispensable part in modern electronic product, and there are many type of Switching Power Supply, is had many uses,
There are many producers specially to produce Switching Power Supply.But it is AC220V input, input that Switching Power Supply almost all on the market is single-phase
It is low (isolation voltage AC1500V) to export isolation voltage, and is not suitable with explosion-proof frequency converter power supply requirement.
As shown in Figure 1, isolating transformer input and output are AC220V, isolation pressure resistance is DC4500V, and cowling panel is by 220V
AC rectification at the direct current of 320V, and export to Switching Power Supply, Switching Power Supply has a three road output voltages, J1:+15V ,-
15V, GND, the ground of power supply and the ground of Switching Power Supply input share here；J2:15V, PGND；J3:+24V, NGND.Three ground
Tri- ground GND, PGND, NGND are mutually isolated, isolation voltage are as follows: DC4500V.
From the above, it can be seen that Switching Power Supply input terminal needs isolating transformer and cowling panel, in 660V voltage class
In frequency converter, its DC bus-bar voltage is DC1000V, it is intended that one Switching Power Supply of design, its input terminal directly from
DC bus-bar voltage takes electricity, thus eliminates isolating transformer and cowling panel.Simultaneously in the case where frequency converter unexpected power loss,
Since frequency changer direct current bus has a capacitor of large capacity, such Switching Power Supply just has lasting voltage, and frequency converter will one
Directly there is control electricity, until busbar voltage is lower than DC320V.In the case where unexpected power loss, main circuit of frequency converter would not be caused to have
High-voltage electricity, and Frequency Converter Control circuit is really without electricity.
[summary of the invention]
The purpose of this utility model is that in order to adapt to explosion-proof frequency converter power supply requirement, a of bespoke design is suitble to quick-fried change
The power supply of frequency appliance mains switch, and solve defect existing in the prior art.
To achieve the above object, it is filled designed for the pair transistor inverse-excitation type high-voltage direct current switch power supply of explosion-proof frequency converter
It sets, which is characterized in that switching power circuit includes the control chip A1 of Switching Power Supply, the control chip A1's of the Switching Power Supply
Phase is identical, amplitude is identical at two by TRANSFORMATION OF THE DRIVING by the driving signal connection driving transformer T1 of 6 feet output, mutually every
From two driving signals, respectively drive connection two switching tubes V1, V2；
The switching tube V1 passes through diode by diode D3, D6 and switch transformer T2 connection, the switching tube V2
D4, D5 and switch transformer T2 connection constitute pair transistor inverse excitation type converter topological structure；The secondary side of switch transformer T2 is defeated
Rectification circuit out；
It is equipped between the switching tube V1 and diode D3, D6 by capacitor C24, C25；Resistance R43~R57 is composed in series
RC absorbing circuit；It is equipped between the switching tube V2 and diode D4, D5 by capacitor C26, C29；Resistance R58~R72 series connection group
At RC absorbing circuit, directly absorbed on bus.
The control chip A1 input terminal of the Switching Power Supply is inputted using direct current, voltage range are as follows: and DC320V~
DC1200V, the efficiency of Switching Power Supply reach 85% or more, and overall power is designed as 100W or more, per the line of output voltage all the way
Wave is less than 120mV, and the Switching Power Supply is used for the explosion-proof frequency converter of 660V voltage class.
The control chip A1 of Switching Power Supply use UC3844B, driving frequency by control chip A1 the port VREF, RT/CT
Connection switch pipe V12, V14, resistance R14, R15, capacitor C3 are codetermined.
The switch transformer T2 uses inverse-excitation type coiling, and the isolation voltage of transformer requires to reach DC3000V, therefore paints
Envelope curve uses three layer line modes.
The rectification circuit of the secondary side output of the switch transformer T2 uses multiple-stage filtering mode, before being rectification first
RC filtering, the CLC π type filtering after followed by rectifying, reduces voltage ripple and voltage spine.
The driving transformer T1 is positive activation type coiling.
Described switching tube V1, V2 select the switching tube of silicon carbide structure, model are as follows: C2M1000170D, pressure resistance are VDS=
1700V, rated current ID=5.0A, open resistance RDS=1.0 Ω.
A Switching Power Supply of the utility model design, its input are direct current input, voltage range are as follows: DC320V~
DC1200V, in this voltage range, Switching Power Supply can be worked normally.The efficiency of Switching Power Supply reaches 85% or more, entirety
Power designs reach 100W or more, and the ripple per output voltage all the way is less than 120mV, this Switching Power Supply is for 660V voltage etc.
On the explosion-proof frequency converter of grade, to simplify frequency converter hardware circuit, overall cost is reduced, increases reliability.
The direct-current switch power supply difficult point has a following: first: wide input voltage range.Second: output voltage ripple is small.
In order to reduce voltage ripple, which uses many measures, the RC absorbing circuit including V1, V2；The leakage of switch transformer
Sense requires；The RC filtering and the filtering of CLC π type of output loop；Each current loop minimal path of pcb board.
[Detailed description of the invention]
Fig. 1 is existing power supply elementary diagram；
Fig. 2 is the utility model principle figure；
[specific embodiment]
The technical solution of the utility model is further elaborated now in conjunction with accompanying drawings and embodiments, it is believed that art technology
It is clear for personnel.
As shown in schematic diagram Fig. 2, switching tube V1, V2；Diode D3, D4, D5, D6；Switch transformer T2 constitutes twin crystal
The classical topologies structure of body pipe inverse excitation type converter, and absorbing circuit part in this circuit, that is, C24, C25；R43~
R57 and C26, C29；R58~R72 innovatively uses RC and absorbs, compared with traditional, directly absorbed on bus with C, effect
More preferably.
The control chip A1 of Switching Power Supply uses UC3844B, and driving frequency is codetermined by V12, V14, R14, R15, C3,
The driving frequency of parameter setting in circuit diagram is 39KHz, and the driving signal of the 6 feet output of A1 will be driven by driving transformer T1
Signal is transformed into two two driving signals that phase is identical, amplitude is identical, mutually isolated, respectively drive two switching tube V1,
V2.For the damage for reducing Switching Power Supply, the fever for reducing switching tube, increase Switching Power Supply input voltage range, V1, V2 are selected
The switching tube of silicon carbide structure, model are as follows: C2M1000170D, its pressure resistance are VDS=1700V, rated current ID=5.0A,
Open resistance RDS=1.0 Ω.Drive transformation be positive activation type, detailed winding method be detailed in the driving transformer in attachment around
Method processed.
Switch transformer T2 uses inverse-excitation type coiling, and the isolation voltage of transformer requires to reach DC3000V, therefore enameled wire
Using three layer line modes, the magnetic core of transformer, turn ratio, leakage inductance require to be detailed in switch transformer winding method.
The rectifying part of switch transformer pair side output uses multiple-stage filtering mode, the RC filter before being rectification first
Wave, the CLC π type filtering after followed by rectifying.Its purpose of these filtering modes is exactly to reduce voltage ripple and voltage point
Thorn.
Claims (7)
1. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter, which is characterized in that switch
Power circuit includes the control chip A1 of Switching Power Supply, the driving signal of the 6 feet output of the control chip A1 of the Switching Power Supply
Driving transformer T1 is connected by TRANSFORMATION OF THE DRIVING into two two driving signals that phase is identical, amplitude is identical, mutually isolated,
Respectively drive connection two switching tubes V1, V2；
The switching tube V1 passes through diode D4, D5 by diode D3, D6 and switch transformer T2 connection, the switching tube V2
It is connect with switch transformer T2, constitutes pair transistor inverse excitation type converter topological structure；The secondary side output of switch transformer T2 is whole
Current circuit；
It is equipped between the switching tube V1 and diode D3, D6 by capacitor C24, C25；The RC that resistance R43~R57 is composed in series inhales
Receive circuit；It is equipped between the switching tube V2 and diode D4, D5 by capacitor C26, C29；Resistance R58~R72 is composed in series
RC absorbing circuit, directly absorbs on bus.
2. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as described in claim 1 fills
It sets, which is characterized in that the control chip A1 input terminal of the Switching Power Supply is inputted using direct current, voltage range are as follows: DC320V~
DC1200V, the efficiency of Switching Power Supply reach 85% or more, and overall power is designed as 100W or more, per the line of output voltage all the way
Wave is less than 120mV, and the Switching Power Supply is used for the explosion-proof frequency converter of 660V voltage class.
3. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as described in claim 1 fills
Set, which is characterized in that the control chip A1 of Switching Power Supply use UC3844B, driving frequency by control chip A1 VREF, RT/
The port CT connection switch pipe V12, V14, resistance R14, R15, capacitor C3 are codetermined.
4. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as described in claim 1 fills
It setting, which is characterized in that the switch transformer T2 uses inverse-excitation type coiling, and the isolation voltage of transformer requires to reach DC3000V,
Therefore enameled wire uses three layer line modes.
5. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as claimed in claim 4 fills
It sets, which is characterized in that the rectification circuit of the secondary side output of the switch transformer T2 uses multiple-stage filtering mode, is rectification first
RC filtering before, the CLC π type filtering after followed by rectifying, reduces voltage ripple and voltage spine.
6. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as described in claim 1 fills
It sets, which is characterized in that the driving transformer T1 is positive activation type coiling.
7. a kind of pair transistor inverse-excitation type high-voltage direct current switch power supply for explosion-proof frequency converter as described in claim 1 fills
It sets, which is characterized in that described switching tube V1, V2 select the switching tube of silicon carbide structure, model are as follows: C2M1000170D, pressure resistance are
VDS=1700V, rated current ID=5.0A, open resistance RDS=1.0 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297441.2U CN208691142U (en) | 2018-08-13 | 2018-08-13 | Pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297441.2U CN208691142U (en) | 2018-08-13 | 2018-08-13 | Pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208691142U true CN208691142U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821297441.2U Active CN208691142U (en) | 2018-08-13 | 2018-08-13 | Pair transistor inverse-excitation type high-voltage direct current switch power supply device for explosion-proof frequency converter |
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| CN (1) | CN208691142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021015725A1 (en) * | 2019-07-19 | 2021-01-28 | Hewlett-Packard Development Company, L.P. | Energy-absorbing circuits |
-
2018
- 2018-08-13 CN CN201821297441.2U patent/CN208691142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021015725A1 (en) * | 2019-07-19 | 2021-01-28 | Hewlett-Packard Development Company, L.P. | Energy-absorbing circuits |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211122 Address after: 710299 No. 7, middle section of Jingpu Road, Jingwei new town, economic and Technological Development Zone, Xi'an, Shaanxi Province Patentee after: Xi'an Heavy equipment Weiken Electric Co.,Ltd. Address before: 201806 No. 1957, Huiren Road, Jiading District, Shanghai Patentee before: SHANGHAI WEIKEN INDUSTRIAL CO.,LTD. Patentee before: Shanghai Meike Testing Technology Co., Ltd |