CN202231475U - Back-up power charging circuit of alternating-current driver - Google Patents
Back-up power charging circuit of alternating-current driver Download PDFInfo
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- CN202231475U CN202231475U CN2011204019615U CN201120401961U CN202231475U CN 202231475 U CN202231475 U CN 202231475U CN 2011204019615 U CN2011204019615 U CN 2011204019615U CN 201120401961 U CN201120401961 U CN 201120401961U CN 202231475 U CN202231475 U CN 202231475U
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- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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Abstract
The utility model discloses a back-up power charging circuit of an alternating-current driver. The charging circuit is characterized in that the charging circuit is connected to an alternating-current power supply, and the charging circuit comprises a rectifier circuit, a filter circuit and a switching circuit, wherein the output end of the switching circuit is connected in parallel with a power-switching circuit and a sampling protective circuit, and the input end of the switching circuit is connected in series with a triode; the input end of the power-switching circuit is connected with the switching circuit, and the output end of the power-switching circuit is connected with a control unit through the triode; and the input end of the sampling protective circuit is connected with the switching circuit, and the output end of the sampling protective circuit is connected with the control unit. In the back-up power charging circuit disclosed by the utility model, a back-up power supply is increased, the back-up power supply is charged by the charging circuit, and when an electric network is instantly interrupted, a pitch system can still reliably operate, therefore, the alternating-current driver meets the special requirements of a pitch driver.
Description
Technical field
The utility model belongs to wind power generation field, relates in particular to a kind of back-up source charging circuit that wind-powered electricity generation exchanges the ac driver of pitch-controlled system that is used for.
Background technology
At present, wind power generation is a kind of ripe relatively developmental technology of new energy resources that developed, and has and popularizes widely and use.Variable blade control system is one of core component of wind turbine generator, and it mainly acts on is to regulate the size of wind-driven generator power output through changing wind turbine generator blade angle, guarantees that wind-driven generator output is in rated power.Variable pitch driver is the performance element of variable blade control system with becoming the oar motor, also is one of most crucial parts of pitch-controlled system.Ac motor structure is simple, reliability and durability, cost characteristics low, easy to maintenance, and at present, the application in the wind electricity change paddle control system of ac driver and alternating current machine more and more widely.And in wind power pitch-controlled system, pitch-controlled system still can reliably working when guaranteeing the electrical network momentary power failure, and pitch-controlled system can draw blade in behind grid cut-off, and pitch-controlled system all has the back-up source of oneself.
The utility model content
In view of the defective that above-mentioned prior art exists, the purpose of the utility model is to propose a kind of back-up source charging circuit that wind-powered electricity generation exchanges the ac driver of pitch-controlled system that is used for.
The purpose of the utility model will be achieved through following technical scheme:
A kind of back-up source charging circuit of ac driver; Be connected on the AC power, comprise rectification circuit, filter circuit and switching circuit; Wherein: the input of said rectification circuit is connected with the output of AC power; The output of said rectification circuit links to each other with the input of filter circuit, and the output of said filter circuit links to each other with the input of switching circuit, and the output of said switching circuit links to each other with back-up source; The output of said switching circuit is parallel with a power-switching circuit and a sampling protective circuit, and the input of said switching circuit is in series with a triode; The input of said power-switching circuit is connected with switching circuit, and the output of said power-switching circuit is connected with a control unit through said triode; The input of said sampling protective circuit is connected with switching circuit, and the output of said sampling protective circuit is connected with said control unit.
Preferably, the back-up source charging circuit of above-mentioned ac driver, wherein: said filter circuit is a passive filter circuit.
The utility model increases and optimizes through the function to universal ac driver; Increased back-up source, realized the charging to back-up source through charging circuit, pitch-controlled system still can reliably working when having guaranteed the electrical network momentary power failure; Make ac driver satisfy the specific (special) requirements of variable pitch driver; Application function strengthens, and performance improves, and satisfies at wind-powered electricity generation exchanging the application requirements in the pitch-controlled system more.
Following constipation closes the embodiment accompanying drawing, the embodiment of the utility model is done further to detail, so that the utility model technical scheme is easier to understand, grasp.
Description of drawings
Fig. 1 is the circuit diagram of the utility model embodiment 1.
Embodiment
Embodiment 1
The back-up source charging circuit of a kind of ac driver of present embodiment, as shown in Figure 1, be connected on the AC power, comprise rectification circuit, filter circuit and switching circuit, filter circuit are passive filter circuit.The input of rectification circuit is connected with the output of AC power; The output of rectification circuit links to each other with the input of filter circuit; The output of filter circuit links to each other with the input of switching circuit; The output of switching circuit links to each other with back-up source, and the output of switching circuit is parallel with power-switching circuit and sampling protective circuit, and the input of switching circuit is in series with triode; The input of power-switching circuit is connected with switching circuit, and the output of power-switching circuit is connected with control unit through triode; The input of sampling protective circuit is connected with switching circuit, and the output of sampling protective circuit is connected with control unit.
Present embodiment increases and optimizes through the function to universal ac driver; Increased back-up source, realized the charging to back-up source through charging circuit, pitch-controlled system still can reliably working when having guaranteed the electrical network momentary power failure; Make ac driver satisfy the specific (special) requirements of variable pitch driver; Application function strengthens, and performance improves, and satisfies at wind-powered electricity generation exchanging the application requirements in the pitch-controlled system more.
The utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within the protection range of the utility model.
Claims (2)
1. the back-up source charging circuit of an ac driver; Be connected on the AC power, comprise rectification circuit, filter circuit and switching circuit; Wherein: the input of said rectification circuit is connected with the output of AC power; The output of said rectification circuit links to each other with the input of filter circuit, and the output of said filter circuit links to each other with the input of switching circuit, and the output of said switching circuit links to each other with back-up source; It is characterized in that: the output of said switching circuit is parallel with a power-switching circuit and a sampling protective circuit, and the input of said switching circuit is in series with a triode; The input of said power-switching circuit is connected with switching circuit, and the output of said power-switching circuit is connected with a control unit through said triode; The input of said sampling protective circuit is connected with switching circuit, and the output of said sampling protective circuit is connected with said control unit.
2. the back-up source charging circuit of ac driver according to claim 1, it is characterized in that: said filter circuit is a passive filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204019615U CN202231475U (en) | 2011-10-20 | 2011-10-20 | Back-up power charging circuit of alternating-current driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204019615U CN202231475U (en) | 2011-10-20 | 2011-10-20 | Back-up power charging circuit of alternating-current driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231475U true CN202231475U (en) | 2012-05-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204019615U Expired - Lifetime CN202231475U (en) | 2011-10-20 | 2011-10-20 | Back-up power charging circuit of alternating-current driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066680A (en) * | 2011-10-20 | 2013-04-24 | 苏州能健电气有限公司 | Back-up source charging circuit of alternating current driver |
-
2011
- 2011-10-20 CN CN2011204019615U patent/CN202231475U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066680A (en) * | 2011-10-20 | 2013-04-24 | 苏州能健电气有限公司 | Back-up source charging circuit of alternating current driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Qian Xiaoli Document name: Notice of expiration and termination of patent right |
|
| DD01 | Delivery of document by public notice |