CN204089326U - The double power supply circuit of static reacance generator drive circuit - Google Patents
The double power supply circuit of static reacance generator drive circuit Download PDFInfo
- Publication number
- CN204089326U CN204089326U CN201420461221.4U CN201420461221U CN204089326U CN 204089326 U CN204089326 U CN 204089326U CN 201420461221 U CN201420461221 U CN 201420461221U CN 204089326 U CN204089326 U CN 204089326U
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- CN
- China
- Prior art keywords
- drive plate
- power supply
- circuit
- reacance generator
- static reacance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of double power supply circuit of static reacance generator drive circuit, comprise drive plate, it is characterized in that: be also provided with outside rectification module and DC capacitor, the direct current that outside rectification module exports is connected with a port of drive plate, the electric current that DC capacitor bus exports is connected with the another port of drive plate, is provided with two strings two diode also at the input of drive plate power supply.The utility model solves the various drawbacks that single circuit is powered, and single circuit effectively can be avoided to power the explosion phenomenon easily occurred, can avoid again the high cost using back-up source to need.
Description
Technical field
The utility model relates to static reacance generator drive circuit, is specially a kind of static reacance generator drive circuit of double power supply circuit.
Background technology
In static reacance generator, driving switch pipe (as IGBT's) turns on and off, the output signal of drive circuit, directly has influence on the waveform quality of the electric current that inversion goes out, and is even related to the straight-through of the pipe up and down of switching tube, if straight-through by busbar short-circuit, directly demolish switching tube.Therefore, stable driver module power supply is the Reliable guarantee of output drive signal.
Current static reacance generator drive circuit mainly adopts single power supply circuit, because drive plate is direct current supply, general employing AC power frequency voltage 220V is rectified into direct current and powers to drive plate, but if there is electric power system powering-off state, drive plate module is power down immediately also, switch tube can produce harmful effect, may occur the blast of switching tube.
Also the static reacance generator drive circuit had adopts UPS to power and super capacitor is powered, but price is high, therefore reduces static reacance generator drive circuit overall price/performance ratio.
Utility model content
The purpose of this utility model is a kind of double power supply circuit at static reacance generator drive circuit of design.
The technical scheme realizing the utility model object is:
A kind of double power supply circuit of static reacance generator drive circuit, comprise drive plate, unlike the prior art: be also provided with outside rectification module and DC capacitor, the direct current that outside rectification module exports is connected with a port of drive plate, the electric current that DC capacitor bus exports is connected with the another port of drive plate, is provided with two strings two diode also at the input of drive plate power supply.
The direct current of two ports that described drive plate is connected with outside rectification module and DC capacitor is 170-700V.
The power mode of duplicate supply of the present utility model is: also do not have in harness state at static reacance generator, and the drive circuit of static reacance generator to be come direct current supply by outside rectification; After static reacance generator starts, the DC side of static reacance generator has electricity, and time voltage exceedes external dc voltage, the power switching of static reacance generator drive circuit becomes by DC side bussed supply.
The utility model has the advantages that: the utility model solves the various drawbacks that single circuit is powered, single circuit effectively can be avoided to power the explosion phenomenon easily occurred, the high cost using back-up source to need can be avoided again.
Accompanying drawing explanation
Fig. 1 is actual connection electrical schematic
Fig. 2 is that double circuit is for electrical schematic
Embodiment
As shown in Figure 1, a kind of double power supply circuit of static reacance generator drive circuit, by drive plate,, outside rectification module and DC capacitor form, the direct current that outside rectification module exports is connected with a port of drive plate, the electric current that DC capacitor bus exports is connected with the another port of drive plate, is provided with two strings two diode also at the input of drive plate power supply.
The direct current of two ports that drive plate is connected with outside rectification module and DC capacitor is 170-700V.
After two-way direct current access drive plate, completed the switching of power supply by the power supply switch circuit on drive plate.As shown in Figure 2, commutation circuit has 4 diodes (IN4007) and 2 inductance (10mH) compositions, and diode two string, together in order to improve withstand voltage, can reach 2000V, form commutation circuit with another road diodes in parallel; Because busbar voltage may contain ripple current, in order to obtain cleaner direct current, add 2 inductance elimination ripple currents.
Claims (2)
1. the double power supply circuit of a static reacance generator drive circuit, comprise drive plate, it is characterized in that: be also provided with outside rectification module and DC capacitor, the direct current that outside rectification module exports is connected with a port of drive plate, the electric current that DC capacitor bus exports is connected with the another port of drive plate, is provided with two strings two diode also at the input of drive plate power supply.
2. double power supply circuit according to claim 1, is characterized in that: the direct current of two ports that described drive plate is connected with outside rectification module and DC capacitor is 170-700V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461221.4U CN204089326U (en) | 2014-08-15 | 2014-08-15 | The double power supply circuit of static reacance generator drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461221.4U CN204089326U (en) | 2014-08-15 | 2014-08-15 | The double power supply circuit of static reacance generator drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089326U true CN204089326U (en) | 2015-01-07 |
Family
ID=52181997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420461221.4U Expired - Fee Related CN204089326U (en) | 2014-08-15 | 2014-08-15 | The double power supply circuit of static reacance generator drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089326U (en) |
-
2014
- 2014-08-15 CN CN201420461221.4U patent/CN204089326U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150107 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |