直驱风力发电系统网侧变流器无源混合控制  

A Passive Hybrid Control for Grid-connected Converter of Direct-drive Wind Power Generation System

作　　者：马先芹[1] 王久和[1] 

机构地区：[1]北京信息科技大学,自动化学院,北京100192

出　　处：《电力电子技术》2013年第10期9-11,共3页Power Electronics

基　　金：国家自然科学基金重点资助项目(5107705);北京市高校创新能力提升计划项目(PXM2013_014224_000095);北京市教委科技发展计划面上项目(SQKM-201211232009)~~

摘　　要：针对直驱风力发电系统非线性特性和脉宽调制(PWM)变流器的控制策略,提出网侧变流器无源控制和比例积分(PI)控制相结合的混合控制策略。根据变流器拓扑结构,建立了基于欧拉方程的数学模型,设计了无源控制器,为提高变流器动态性能,采用注入阻尼方法对控制器进行优化设计;并与经典PI控制进行比较。仿真结果验证了所提控制策略的有效性,实验样机实现了交流电流正弦化及单位功率因数并网,且并网性能优良。Aiming at nonlinear characteristics of the direct-drive wind power generation system and pulse width modul- ation（PWM） converter＇s control strategy, a novel hybrid control strategy based on passive control and proportion in- tegral（PI） control for grid-connected converter is proposed.According to the topology of the converter,the passive controller based on Euler model is designed.In order to improve the dynamic performance of the converter,the ap- proach called injecting damping to optimize the controller is adopted, and compares with the classic PI control.Simula- tion is developed to verify the validity of the proposed control system.Through the prototype experiments,the converter can achieve sinusoidal grid alternating current, the unity power factor, and has excellent grid-connected characteristic.

关 键 词：风力发电 变流器 无源控制 注入阻尼 

分 类 号：TM614[电气工程—电力系统及自动化]