基于前馈解耦的VIENNA整流器矢量控制研究  

Study on the vector control of three- phase three- level VIENNA rectifier based on SVPWM

作　　者：郑怡[1] 

机构地区：[1]兰州石化职业技术学院电子电气工程系,兰州730060

出　　处：《工业仪表与自动化装置》2016年第2期119-122,共4页Industrial Instrumentation & Automation

摘　　要：在详细分析VIENNA三电平整流器工作机理的基础上,引入平均功率的dq前馈解耦控制策略,有效消除了dq间耦合作用,提出了基于SVPWM控制策略下利用直流侧电压与单比例系数实时修正占空比实现直流侧母线中点电位的有效补偿机制,给出了详细的理论分析与PI控制器设计原则,同时构建了完整的三相三线制VIENNA整流器仿真模型与实验平台。仿真实验结果表明,文中设计的控制系统响应速度快,调节范围宽,输出电压纹波小,可有效保持直流侧输出电压平衡。On the basis of detailed analysis the three- phase three- level VIENNA rectifier,adopt dq feed forward decoupling PI control strategy to eliminate the coupling effect,a detailed analysis of fluctuation mechanism of neutral point potential was shown in this paper,put forward DC side voltage and correction coefficient of superposition of busbar effective compensate the neutral voltage based on SVPWM control strategy. On the basis of further for three- phase grid voltage unbalance is given when the positive and negative sequence independent double closed loop control implementation diagram,detailed theoretical analysis and PI controller design principle is given,a complete system of three- phase three- wire VIENNA rectifier simulation model is built. The simulation results shows that the design of the control strategy of system response speed,wide adjusting range and output voltage ripple is small,high power efficiency number.

关 键 词：VIENNA整流器 dq解耦控制 空间矢量调制 中点电位平衡 电压不平衡 

分 类 号：TM46[电气工程—电器]