Micro wind power generation power controller

Abstract

The invention discloses a micro wind power generation power controller and belongs to the clean energy controller technology field. The micro wind power generation power controller comprises a wind power generator, a rectification module, a boost-buck DC / DC converter, a rotating speed detection module, a full digital controller, a storage cell and a DC load. Through the micro wind power generation power controller, a speed measurement function can be realized through detecting line voltage frequency of the wind power generator, low cost and high reliability are realized, additionally arranging a speed sensor on the wind power generator is not needed, and thereby tracking control on a largest-power point can be accurately carried out. A target power curve is utilized to calculate the largest-power point, high precision and fast response are realized, no shock is generated, and improvement of system power generation efficiency is facilitated.

Description

technical field [0001] The invention relates to a small wind power generation power controller, which belongs to the technical field of clean energy wind power generation controllers. Background technique [0002] Wind energy is a new energy source with great potential. Due to its cleanliness and renewability, it has attracted the attention of researchers all over the world. Its reserves are huge, the global wind energy is about 2.74×109MW, of which the available wind energy is 2×107MW. China's wind energy reserves are large and widely distributed, and the wind energy reserves on land alone are about 253 million kilowatts. Wind power generation will have very broad development prospects. [0003] However, in practical applications, relying on natural wind to drive wind turbines to generate electricity is very unstable, and the output power changes frequently and irregularly. Common wind generators mostly use permanent magnet synchronous generators, and at a certain wi...

AI Technical Summary

Problems solved by technology

However, the voltage of the generator is affected by the connected load. When the load increases, the voltage drops

The result of detecting the speed simply by detecting the voltage is inaccurate

[0004] Some wind power controllers detect the speed through the speed sensor. Although the accurate speed can be obtained in this way, the cost is high. Moreover, the speed sensor transmits the signal through the brush slip ring, which is easily affected by wind and sand in the application. Fault

Therefore, the application of the speed sensor is easily damaged, which is not economical and practical

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