CN103066680A - Back-up source charging circuit of alternating current driver - Google Patents
Back-up source charging circuit of alternating current driver Download PDFInfo
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- CN103066680A CN103066680A CN2011103209867A CN201110320986A CN103066680A CN 103066680 A CN103066680 A CN 103066680A CN 2011103209867 A CN2011103209867 A CN 2011103209867A CN 201110320986 A CN201110320986 A CN 201110320986A CN 103066680 A CN103066680 A CN 103066680A
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Abstract
The invention discloses a back-up source charging circuit of an alternating current driver. The back-up source charging circuit of the alternating current driver is connected to an alternating current power source and comprises a rectifying circuit, a filter circuit and a switch circuit. An output end of the switch circuit is connected with a power-switching circuit and a sampling protective circuit in parallel. An input end of the switch circuit is connected with an audion in series. An input end of the power-switching circuit is connected with the switch circuit. An output end of the power-switching circuit is connected with a control unit through the audion. An input end of the sampling protective circuit is connected with the switch circuit. An output end of the sampling protective circuit is connected with the control unit. According to the back-up source charging circuit of the alternating current driver, a back-up power source is added, charging of the back-up power source is achieved through the charging circuit, a variable pitch system is enabled to still work reliably when momentary power outage of a power grid occurs, and special requirements of a variable pitch driver are satisfied by the alternating current driver.
Description
Technical field
The invention belongs to wind power generation field, relate in particular to a kind of back-up power charging circuit of the ac driver for the wind power AC pitch-controlled system.
Background technology
At present, wind power generation is a kind of relatively ripe 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 its Main Function is the size of regulating wind driven generator output power by changing wind turbine generator blade angle, guarantees that wind-driven generator output is in rated power.Variable pitch driver and change oar motor are the performance elements of variable blade control system, also are one of most crucial parts of pitch-controlled system.The characteristics that ac motor structure is simple, reliability and durability, cost is low, easy to maintenance, at present, the application in variable propeller pitch control of ac driver and alternating current machine is more and more extensive.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 has the back-up source of oneself.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the objective of the invention is to propose a kind of back-up power charging circuit of the ac driver for the wind power AC pitch-controlled system.
Purpose of the present invention will be achieved by the following technical programs:
A kind of back-up power charging circuit of ac driver, be connected on the AC power, comprise rectification circuit, filter circuit and switching circuit, wherein: the input of described rectification circuit is connected with the output of AC power, the output of described rectification circuit links to each other with the input of filter circuit, the output of described filter circuit links to each other with the input of switching circuit, the output of described switching circuit links to each other with back-up source, the output of described switching circuit is parallel with a power-switching circuit and a sampling protective circuit, and the input of described switching circuit is in series with a triode; The input of described power-switching circuit is connected with switching circuit, and the output of described power-switching circuit is connected with a control unit by described triode; The input of described sampling protective circuit is connected with switching circuit, and the output of described sampling protective circuit is connected with described control unit.
Preferably, the back-up power charging circuit of above-mentioned ac driver, wherein: described filter circuit is passive filter circuit.
The present invention increases and optimizes by the function to universal ac driver, increased back-up source, by the charging of charging circuit realization to back-up source, 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 more satisfies the application requirements in the wind power AC pitch-controlled system.
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Description of drawings
Fig. 1 is the circuit diagram of the embodiment of the invention 1.
Embodiment
Embodiment 1
The back-up power charging circuit of a kind of ac driver of the present embodiment as shown in Figure 1, is connected on the AC power, comprises rectification circuit, and 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, 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 by triode; The input of sampling protective circuit is connected with switching circuit, and the output of sampling protective circuit is connected with control unit.
The present embodiment increases and optimizes by the function to universal ac driver, increased back-up source, by the charging of charging circuit realization to back-up source, 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 more satisfies the application requirements in the wind power AC pitch-controlled system.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.
Claims (2)
1. the back-up power charging circuit of an ac driver, be connected on the AC power, comprise rectification circuit, filter circuit and switching circuit, wherein: the input of described rectification circuit is connected with the output of AC power, the output of described rectification circuit links to each other with the input of filter circuit, the output of described filter circuit links to each other with the input of switching circuit, the output of described switching circuit links to each other with back-up source, it is characterized in that: the output of described switching circuit is parallel with a power-switching circuit and a sampling protective circuit, and the input of described switching circuit is in series with a triode; The input of described power-switching circuit is connected with switching circuit, and the output of described power-switching circuit is connected with a control unit by described triode; The input of described sampling protective circuit is connected with switching circuit, and the output of described sampling protective circuit is connected with described control unit.
2. the back-up power charging circuit of ac driver according to claim 1, it is characterized in that: described filter circuit is passive filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103209867A CN103066680A (en) | 2011-10-20 | 2011-10-20 | Back-up source charging circuit of alternating current driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103209867A CN103066680A (en) | 2011-10-20 | 2011-10-20 | Back-up source charging circuit of alternating current driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103066680A true CN103066680A (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103209867A Pending CN103066680A (en) | 2011-10-20 | 2011-10-20 | Back-up source charging circuit of alternating current driver |
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| CN (1) | CN103066680A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976955A (en) * | 2010-09-27 | 2011-02-16 | 上海交通大学 | Variable-pitch servo driver with function of energy storage |
| CN102013726A (en) * | 2010-12-10 | 2011-04-13 | 苏州能健电气有限公司 | Backup power supply device in wind turbine pitch system |
| CN202231475U (en) * | 2011-10-20 | 2012-05-23 | 苏州能健电气有限公司 | Back-up power charging circuit of alternating-current driver |
| CN102832681A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Lithium battery pack charger of wind power pitch system |
-
2011
- 2011-10-20 CN CN2011103209867A patent/CN103066680A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976955A (en) * | 2010-09-27 | 2011-02-16 | 上海交通大学 | Variable-pitch servo driver with function of energy storage |
| CN102013726A (en) * | 2010-12-10 | 2011-04-13 | 苏州能健电气有限公司 | Backup power supply device in wind turbine pitch system |
| CN102832681A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Lithium battery pack charger of wind power pitch system |
| CN202231475U (en) * | 2011-10-20 | 2012-05-23 | 苏州能健电气有限公司 | Back-up power charging circuit of alternating-current driver |
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Application publication date: 20130424 |