一种新型双PWM变流器混合控制方法研究  

Research on a New Hybrid Control Method for Dual-PWM Converter

作　　者：赵凤姣[1] 王久和[1] 慕小斌[2] 

机构地区：[1]北京信息科技大学自动化学院,北京100192 [2]北京交通大学电气工程学院,北京100044

出　　处：《电气传动》2015年第6期26-31,共6页Electric Drive

基　　金：国家自然科学基金资助项目(51077005);北京市属高校科技创新能力提升计划项目(PXM2013)

摘　　要：为提高供电电压不平衡条件下双PWM变流器的性能,提出了基于EL模型的无源控制与PI控制相结合的混合控制方法。根据双PWM变流器主电路的拓扑结构,分别建立了整流器和逆变器在dq坐标系下的EL模型。以系统的设计目标为依据确定期望平衡点,增加耗散矩阵的注入阻尼,进而设计了无源控制器。设计两个PI控制器分别用于控制直流电压和为网侧三相交流线电流d轴分量提供给定值。仿真和实物实验均表明,所提出的混合控制方法是可行的。In order to improve the performance of the dual-PWM converter under unbalanced supply voltage condition, the hybrid control method between passivity-based control based on EL model and PI control was presented. According to the topological structure of the dual-PWM converter, EL models in dq coordinates of the rectifier and inverter were established. The expected equilibrium point was determined by the system design target, and damp injection of dissipation matrix was added, then the passivity-based controller was designed. Two PI controllers were designed. One was used to control DC voltage and the other was used to provide the given value for the d-axis component of the net-side three-phase AC line current. The simulation results and the practicality experiment results indicate that presented control method is feasible.

关 键 词：供电电压不平衡 正负序分量 双PWM变流器 无源控制 EL模型 

分 类 号：TM46[电气工程—电器]