电力电子技术在风力发电中的应用综述

风能是不能储存能源，将风能转换成电能并输送到电网过程中，电力电子设备是关键因素之一．介绍了当前主要的风力发电机系统及其控制．针对最具有发展潜力的变速恒频双馈风力发电系统，分析其用于转速控制的电力电子变换器装置．分析了交流并网安装静止无功补偿器的意义，介绍了基于VSC的轻型直流输电原理．最后，描述了未来大容量海上风电场将更广泛应用电力电子装置．

Summarization of Power Electronics Techniques in Wind Power

Since the wind is non-storable energy source, the power electronics device is one of the key factors during the period of the wind transferred into the electric energy and transmitted to the power network. In this paper, the main wind generator systems existing and their controls are introduced. To the most potential variable-speed constant- frequency doubly fed induction generator, the device of power electronics converter used to control rotate speed is ana- lyzed. The significance of installation of Static Var Compensator in AC connections to the grid is analyzed. The prin- ciple of high voltage direct current transmission light based on VSC is analyzed. Finally, it is described that the power electronics device will be applied widely in large-scale offshore wind farm in the future.