基于空间矢量的能量回馈系统控制方法的研究  

Research of Control Method of Energy Feedback System Based on Space-vector

作　　者：宋书中[1] 王浩然[1] 周秋燕[1] 

机构地区：[1]河南科技大学,河南洛阳471003

出　　处：《工矿自动化》2009年第4期32-35,共4页Journal Of Mine Automation

摘　　要：针对通用变频器无法很好地消除电动机在减速、制动时产生的泵生电压的问题,文章提出了一种变频器能量回馈系统的SVPWM控制方法。该控制方法应用于有源逆变电路,采用基于固定开关频率的SVPWM控制策略,可有效消除泵生电压,实现相位动态跟踪以及电流单位功率因数回馈,并可使通用变频器在四象限运行,具有电压利用率高、动态响应快的特点。仿真结果验证了该控制方法的正确性和有效性。Aiming at the problem that general inverters couldn＇t eliminate pumping voltage well produced when motors were decelerating and braking, the paper proposed a SVPWM control method of energy feedback system of inverter. The control method is used in active inverter circuit and adopts SVPWM control strategy based on fixed switching frequency, which can eliminate pumping voltage effectively and realize dynamic tracking of phase and feedback with unity power factor of current. Moreover, the method can make general inverters run in four quadrants with characteristics of high voltage utilization ratio and quick dynamic response. The simulation results verified correctness and validity of the control method.

关 键 词：变频器 能量回馈 空间矢量 SVPWM 有源逆变 

分 类 号：TD614[矿业工程—矿山机电] TM464[电气工程—电器]