Permanent magnet speed regulation control method of wind driven generator

Abstract

The invention relates to the technical field of wind power generation, in particular to a permanent magnet speed regulation control method of a wind driven generator. The permanent magnet speed regulation control method of the wind driven generator is characterized in that a permanent magnet speed regulation driving device is applied to a power transmission system of the wind driven generator, when the generator starts, operates normally, halts and operates abnormally respectively, the generator is controlled according to the rotating speed of a wind wheel, and accordingly the generator is kept in the optimal safe generating efficiency state. Compared with the prior art, the permanent magnet speed regulation control method of the wind driven generator has the advantages that the permanent magnet speed regulation driving device is creatively applied to the power transmission system of the wind driven generator, and the blank of applying the permanent magnet speed regulation driving device to the wind driven generator is filled; the generator can be flexibly started through the permanent magnet speed regulation driving device, and the power obtaining efficiency of the generator is improved; abrasion and vibration can be lightened to the maximum degree, and the service life of the generator and the service life of a gear speed changing box are prolonged; it is guaranteed that the wind driven generator can be kept to operate efficiently and safely within a wider wind speed range.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a permanent magnet speed regulation control method of a wind power generator. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. The global wind energy is about 2.74×10 9 MW, of which the available wind energy is 2×10 7 MW is 10 times larger than the total amount of water energy that can be developed and utilized on the earth. [0003] The principle of wind power generation is to rely on the wind to drive the wind rotor of the wind turbine to convert the kinetic energy of the wind into mechanical energy, and then the speed increaser increases the rotation speed, drives the generator to generate electricity, and converts the mechanical energy into electrical energy. Currently, it is about three meters per second. The wind speed (the degree of breeze) can generate electr...

AI Technical Summary

Problems solved by technology

Compared with constant speed operation, variable speed operation reduces the gust impact, improves power generation efficiency, and improves power quality, but it also increases the cost and complexity of system control. It is still in the exploratory stage

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