作　　者： ; ; ; (李振强）;

机构地区： 华南理工大学电子与信息学院

出　　处： 《电机与控制应用》 2009年第4期18-22,共5页

摘　　要： 为了提高不间断电源(UPS)输出电压的波形质量,根据PID控制的快速响应性和重复控制的无静态误差跟踪特性,提出了一种单相UPS输出电压的重复+PD复合控制方案,并给出了控制系统的稳定性条件。改进型重复控制器只需检测UPS输出电压,结构简单,易于编程实现。试制了10 kVA单相UPS样机,试验结果表明:在线性或非线性负载情况下,系统都具有良好的稳态和动态特性,输出电压总谐波畸变较小。 In order to improve the waveform quality of the output voltage of UPS, a control scheme combining repetitive control with PD control for UPS output voltage is proposed according to the fast response characteristic belong- ing to PID control and free static-error tracking characteristic belonging to repetitive control, and conditions of stability for the control system is proposed. The improved repetitive controller needs only to detect the output voltage of UPS, so it is simple in form and easy to implement. The prototype of 10KVA single-phase UPS has been trial-manufactured. Experimental results demonstrate the system has good steady-state and dynamic-state performance under linear or nonlinear loads. Total harmonic distortion （THD） of the output voltage is endurable.

关 键 词： 重复控制 控制 总谐波畸变

领　　域： [电子电信]