﻿ 基于差动轮系调速的风力发电机的动力学建模与分析

# 基于差动轮系调速的风力发电机的动力学建模与分析Dynamic Modeling and Analysis of Wind Turbine Based on Differential Gear Train Speed Regulation

Abstract: Based on the principle of stepless speed regulation, dynamic modeling of wind turbine has been done. Having changed fixed transmission ratio characteristic of gearbox in traditional wind turbines and the variable speed constant frequency characteristic realized by electronic method, the freedom of differential gear train is increased and the mechanical means have been used for the fore-end speed regulation in order to achieve constant output speed and torque. Taking the diffe-rential gear train as the main learning object, in this paper the wind turbine transmission chain is divided into three parts: planet carrier input shaft, sun wheel output shaft and ring gear speed- regulation shaft, and dynamic equations are established using the Lagrange equation and the speed constraint relations of differential gear train. Therefore, to satisfy the grid-connected requirement, the dynamic relationship in this circumstance is also learned. The dynamic problem can be transformed into the speed-regulation problem of speed-regulation motor under the variable wind turbine torque to achieve constant output speed.

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