三相VIENNA整流器THD优化控制策略  

THD Optimized Control Method for Three-phase VIENNA Rectifier

作　　者：奚志林 寇志强 邹宇航 张犁 XI Zhi-lin;KOU Zhi-qiang;ZOU Yu-hang;ZHANG Li(Lianyungang JARI Electronics Co.,Ltd.,Lianyungang 222061,China)

机构地区：[1]连云港杰瑞电子有限公司,江苏连云港222061 [2]南京航空航天大学,自动化学院,江苏南京211100 [3]河海大学,能源与电气学院,江苏南京211100

出　　处：《电力电子技术》2021年第4期53-55,67,共4页Power Electronics

摘　　要：三相VIENNA整流器具有高效率、高功率密度的特点,在充电桩和通信电源中得到了广泛的应用。但由于其驱动电路存在延时而引入的附加占空比易在网侧电流中引入6k±1(k≥1)次谐波。详细分析了驱动电路延时产生的原因及其作用机制,提出了在三相a,b,c静止坐标系下,分别对三相调制波叠加延时补偿分量的策略,并给出了补偿后三相调制波的计算方法。最后,搭建了 1台7.5 kW的三相VIENNA整流器样机,实验结果表明所提驱动延时补偿策略改善了网侧电流总谐波畸变率(THD)。Three-phase VIENNA rectifier which characterized by high efficiency and high power density has been widely used in charging pile and communication power supply.However,due to the delay of the drriving circuit,the additional duty ratio is easy to introduce 6 k±1(k≥1) harmonic in the grid current.The cause of the delay of the drive circuit and its action mechanism are analyzed in detail,the strategy of superimposing the delay compensation component of the three-phase modulated wave respectively in the three-phase a,b,c static coordination system is put forward and the calculation method of the compensated three-phase modulated wave is given.Finally,a prototype of7.5 kW three-phase VIENNA rectifier is set up.Experimental results show that the proposed drive delay compensation strategy improves the total harmonic distortion(THD) of the current at the grid side.

关 键 词：整流器 延时 总谐波畸变率 

分 类 号：TM461[电气工程—电器]