直驱永磁风力发电系统电网侧变换器的模糊功率控制  

Fuzzy Power Control of Direct-driven Wind Turbine with PM Synchronous Generator

作　　者：黎春湦[1] 张坤[1] 毛承雄[1] 陆继明[1] 王丹[1] 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《水电能源科学》2012年第10期196-199,216,共5页Water Resources and Power

基　　金：国家重点基础研究发展计划基金资助项目(973项目)(2009CB219702);国家自然科学基金资助重点项目(50837003)

摘　　要：针对基于储能的并网永磁直驱风力发电系统的运行特点,提出了一种对电网侧变换器的模糊功率控制策略,当电网发生电压瞬时跌落时使电网侧变换器运行在模糊功率控制模式,依据电网电压跌落深度及风机输出功率大小通过模糊控制器来确定发出无功电流的大小,从而使风电系统能够适度地向电网提供一定的无功功率来支撑电网电压。仿真结果表明,所提出的控制策略正确、有效。According to operating characteristics of the grid-connected permanent-magnet direct-drive wind power generation system which is based on energy storage,a fuzzy control strategy of regulating the power of the grid-side converter is proposed.When the grid voltage sag occurs,the gird-connected converter adopts fuzzy power control.Specifically,in accordance with the degree of the grid voltage sag and the output power of the wind power generation,the output reactive current of the grid-side converter is derived by the fuzzy control strategy to provide suitable reactive power to maintain the desired grid voltage.Simulation results are given to illustrate the validity and effectiveness of the proposed method.

关 键 词：风电系统 直驱型 变换器 储能系统 低电压穿越 模糊控制 

分 类 号：TM464[电气工程—电器] TM761