基于改进的瞬态传递矩阵法的风力发电机转子建模与分析

Modeling and Analysis of Wind Turbine Rotor Based on Improved Transient Transfer Matrix Method

风力发电机转子的动力学特性是风力发电机组的关键性能.为解决风力发电机转子动力学有限元仿真的时效问题,本文提出改进的瞬态传递矩阵法分析风力发电机转子瞬态响应.以变截面轴段方式改进轴段单元加速度传递矩阵,使其适用于锥形支撑结构类型,采用Riccati分块矩阵递推,获得计算风力发电机转子的瞬态传递矩阵法.最后,作为算例,对一划分为19个轴段的风力发电机转子作了计算,并与Runge-Kutta法进行对比,验证了本文方法的高效性.

The dynamics of the wind turbine rotor are the key features of the wind turbine. In order to solve the aging problem of wind turbine rotor dynamics based on the finite element simulation, this paper presents an improved transient transfer matrix method to analyze the transient response of wind turbine rotor. The acceleration transfer matrix of the shaft element is improved by using the variable section shaft segment, which is suitable for the type of tapered support structure. The Riccati block matrix recursion is used to obtain the transient transfer matrix method for calculating the rotor of the wind generator. Finally, a rotor of wind turbine with 19 shaft elements is calculated and compared with Runge Kutta method to ver ify the effectiveness of the proposed method.