Capturing method and system of maximum power of wind turbine system and achieving method of capturing system

Abstract

The invention provides a capturing method of maximum power of a wind turbine system. The wind turbine system is a permanent magnet synchronous generator system and is mainly composed of a wind turbine, a permanent magnet synchronous generator, a rectifier, an SEPIC chopper and a storage battery with fixed voltage. The wind turbine captures wind energy and can drive a rotor of the permanent magnetsynchronous generator to rotate to generate current, the current is converted into direct-current power through the rectifier to be provided for the SEPIC chopper, and the output voltage of the SEPICchopper is the fixed voltage of the storage battery, and method is characterized in that a maximum power point tracking controller is connected with an S switch of the SEPIC chopper, through control over the duty ratio of the S switch of the SEPIC chopper, the rotating speed of the wind turbine is controlled, the rotating speed of the wind turbine is continuously close to the maximum power of theoutput, and the maximum power of the permanent magnet synchronous wind generator system is captured.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method for capturing maximum power of a permanent magnet synchronous wind power generator system, a capturing system and a method for realizing the system. Background technique [0002] Coal, oil, natural gas, etc. are the most widely used energy sources. They are all non-renewable fossil resources, while wind energy is an economical, environmentally friendly, and renewable resource with huge reserves. Therefore, countries all over the world are stepping up the development of wind energy development and utilization. Wind power generation is currently the main form of wind energy utilization in the world. Because wind power generation has a good prospect, the development and utilization of wind power resources is of great significance for alleviating energy shortages and protecting the ecological environment. Moreover, the wind power generation system has a small footprint, ...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved in the present invention is to provide a method for capturing the maximum power of a permanent magnet synchronous wind power generator system wind power generation system, a capturing system and an implementation method of the system, which are improved on the basis of the traditional mountain climbing method, thereby improving It improves the tracking speed of the maximum power point of wind power, reduces the waste of disturbance power, and can solve the problems of difficulty and high cost in practical application of traditional optimal tip speed ratio method and power signal feedback method.

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