基于幅相控制的变频器能量回馈控制系统  

An Energy-Feedback Control System of Inverter Based on Phase and Amplitude Control

作　　者：张承慧[1] 李珂[1] 杜春水[1] 崔纳新[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《电工技术学报》2005年第2期41-45,共5页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50477042);高等学校博士点基金(20040422052);山东省自然科学基金资助项目(Z2004G04)。

摘　　要：针对变频器不能直接用于快速起动、制动和频繁正反转调速场合的问题,设计了一种基于幅相控制的SPWM能量回馈控制系统,克服了传统Bang-Bang控制存在的控制精度低的缺陷,实现了单位功率因数正弦波电流回馈和对回馈电流精确控制,使变频器可四象限运行。首先给出了主电路、控制电路的设计思路,然后从回馈电流谐波分析入手推导了能量回馈系统扼流电抗器的电感量的设计公式。实验结果表明该系统设计合理、简单可靠。Based on the fact that general inverter can’t meet the need of braking rapidly and the need of running between forward and reverse frequently, an SPWM energy-feedback control system based on phase and amplitude control is designed. The scheme overcomes the defects of normal Bang-Bang control and realizes unity power factor operation and sinusoidal current feedback, and therefore extends the application of general inverter to four quadrants. The paper introduces the design of main circuit, control circuit at first, then deducts the parameters of inductance according to feedback current harmonic analysis. An experiment is carried out on a 15kVA prototype and its results verify the design methods mentioned above are right, and the system is simple and reliable.

关 键 词：能量回馈 SPWM 幅相控制 有源逆变 

分 类 号：TM464[电气工程—电器]