改进直流侧串联型有源电力滤波器的滑模控制方法  

Sliding-mode Control Method of Improved DC Side Series Active Power Filter

作　　者：侯世英[1] 张闯[1] 肖旭[1] 薛原[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《高电压技术》2012年第4期978-984,共7页High Voltage Engineering

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709304)~~

摘　　要：针对广泛应用的整流类负荷的谐波治理,提出一种基于滑模控制的改进型直流(DC)侧串联型有源电力滤波器(APF)。这种DC侧APF与传统的DC侧APF相比,调压范围更广,且2个全控开关工作在同一频率下,控制和驱动电路得到简化。同时滑模控制是一种非线性控制方法,具有控制结构简单,对外界干扰鲁棒性强,且动态响应速度快等优点,已广泛用于电路结构随开关管状态变化的变换器中。该文将此控制用于该DC侧APF中,针对控制目标,建立了降阶的滑模面,并应用等效控制理论分析了滑模控制的存在和稳定条件。仿真结果证明了这种非线性控制具有较好的抗扰动能力和较快的反应速度,也证明了该理论分析的正确性。Aiming at the harmonic treatment which is widely applied in the rectifier load,we proposed an improved DC side series active power filter（APF） with sliding mode control.Compared with the traditional DC side APF,the DC side APF has the advantages of wide regulating range of the output voltage,and the two high-frequency switches of the DC APF are driven by the same high frequency signal,so the control circuit is simple.At the same time,due to adopting nonlinear control method,the sliding mode control has characteristics of simple structure,strong robustness to interference,and fast dynamic response speed,so it is widely used in the switch converter whose state changes as the switch tube state.We adopted the control strategy in DC side APF,and established the sliding surface with the reduced order according to the control target.Moreover,we analyzed the existence of sliding-mode variable-structure control and its stability conditions by equivalent control theory.Simulation results show that this nonlinear control not only has better disturbance rejection and fast response speed,but also proves the correctness of the theoretical analysis.

关 键 词：有源电力滤波器(APF) 整流类谐波源 谐波补偿 滑模控制 等效控制 非线性控制 

分 类 号：TM46[电气工程—电器] TN713.8[电子电信—电路与系统]