Computer Aided Derivation of Linearized Dynamical Models for Stability Analysis. Part 1. Description of the General Model.

摘要

The report includes a different approach to identify the different types of wind turbine rotor instability which may occur and develop simple models with a limited number of degrees of freedom to describe only one specific form at a time. The results in simple and fast programs from which the physical nature of the instability may be more clear. This type of modelling is particularly useful at an early stage of the design process. The development of such simple mathematical models is a nevertheless laborsome and error sensitive task when done by hand. It is however possible to perform the necessary steps of the process almost entirely with the aid of the computer, thereby reducing the effort and the amount of errors. The report is intended to describe the path the user has to follow in order to obtain such a model. The text is divided into two separate parts. This part deals with the general description of the process and how the computer can be utilized in it. In the second part examples of the general method are given.