Variable-pitch super capacitor charging system having online monitoring function for wind driven generator
A technology for wind turbines and super capacitors, which is applied in the measurement of electrical variables, electrical measurement, battery circuit devices, etc., can solve the problems of wind turbines not being able to harvest pulp normally.
Active Publication Date: 2014-05-07
海南星宇智控科技有限公司
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[0007] The main purpose of the present invention is to provide a supercapacitor charging system for variable pitch of wind power generators with an online monitoring function, so as to solve the problem in the prior art that the wind power generators cannot collect pulp normally due to the failure of supercapacitors to be found in time
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[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0031] figure 1 It is a block diagram of a wind turbine pitch supercapacitor charging system with online monitoring function according to the first embodiment of the present invention, as figure 1 As shown, the system includes a charging module 10 , a temperature detection module 20 , an internal resistance detection module 30 , a capacitance value detection module 40 , a processing module 50 and an alarm module 60 .
[0032] Wherein, the charging module 10 is connected with the supercapacitor to be tested, converts the external alternating current into the voltage required for charging the supercapacitor through power conversion, and charges the supercapacitor. When the pow...
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The invention discloses a variable-pitch super capacitor charging system having an online monitoring function for a wind driven generator. The system comprises a charging module which is connected with a super capacitor and is used for performing power conversion on alternating current to charge the super capacitor, a temperature detection module which is connected with the super capacitor and is used for detecting the temperature of the super capacitor, an internal resistance detection module which is connected with the charging module and is used for detecting internal resistance after the super capacitor is charged, a capacitance value detection module which is connected with the charging module and is used for detecting the capacitance value in the charging process of the super capacitor, a processing module which is connected with the charging module, the temperature detection module, the internal resistance detection module and the capacitance value detection module respectively, and an alarm module which is connected with the processing module and is used for generating an alarm signal when the super capacitor becomes abnormal. By adopting the variable-pitch super capacitor charging system, the abnormal state of the super capacitor can be monitored in time during charging, thereby avoiding the situation that blades of the wind driven generator cannot retract normally in case of fault of the capacitor.
Description
technical field [0001] The invention relates to the technical field of wind power generators, in particular to a wind power generator pitch supercapacitor charging system with an online monitoring function. Background technique [0002] As non-renewable energy is facing the dilemma of depletion worldwide, in order to meet the needs of industrial production and human life, people's attention and utilization of renewable resources such as solar energy, wind power, and water power have been increasing day by day. Among them, wind power generation is a relatively mature energy development technology, which is widely popularized and applied especially in plateau and coastal areas. [0003] At present, the backup power supply of the wind turbine pitch system mostly uses lead-acid battery packs. Since the lead-acid battery is discharged at a current of 3C-5C when the pulp change system is collected, the lead-acid battery will be damaged to varying degrees after a period of use. If...
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IPC IPC(8): H02J7/00G01R31/00
Inventor 马伍新
Owner 海南星宇智控科技有限公司