基于准比例谐振的VIENNA整流器中点电位平衡策略  

Strategy of Neutral Point Potential Balancing for VIENNA Rectifier Based on Quasi Proportional Resonant Control

作　　者：王倩[1] 同向前[1] 张皓[1] 党超亮 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《电气传动》2016年第6期23-27,共5页Electric Drive

基　　金：陕西省重点学科建设专项基金(5X1301);高等学校博士学科点专项科研基金(20126118110009)

摘　　要：传统双闭环PI控制由于相位误差的存在难以实现交流量的零静差跟踪,同时dq解耦控制策略往往又需多次坐标变换,不利于数字实现。基于此,将准比例谐振控制器(QPR)引入VIENNA整流器的控制系统,同时针对直流侧电压不平衡问题,提出一种基于QPR控制器的直流侧电压中点平衡控制策略,进一步改善网侧电流质量,提升整机效率。为验证文中策略的正确性,构建了基于QPR控制的VIENNA整流系统完整的仿真模型与实验样机,结果表明该控制策略可有效改善直流侧均压并有效抑制网侧电流谐波影响,动静态性能优良。Due to the phase error,the traditional PI controller cannot achieve the zero static error of alternatingcurrent. Moreover,the strategy of dq decoupling control is not conducive to the digital implementation and multiplecoordinate transformations will be inevitable. The quasi proportional resonant controller(QPR)was introduced to thecontrol system of VIENNA rectifier. Aiming at the imbalance of DC side voltage,a kind of control strategy for neutralpoint balance at DC side voltage based on QPR controller was proposed which improved the current quality and theefficiency of machine. In order to verify the correctness of the method,a complete simulation model and prototypeunder QPR control was built. Both the simulation and experiment results show that the strategy with good performanceof dynamic and static can effectively improve the balance of DC side voltage and limit the impact of current harmonics.

关 键 词：VIENNA整流器 准比例谐振控制 PI控制 中点电位平衡 

分 类 号：TM464[电气工程—电器]