DVR电压波形跟踪无差拍控制方法  

Voltage waveform deadbeat control of DVR

作　　者：马振国[1] 李鹏[1] 赵保利[2] 李和明[1] 

机构地区：[1]华北电力大学电力工程系,河北保定071003 [2]保定保菱变压器有限公司,河北保定071056

出　　处：《电力自动化设备》2005年第3期13-17,共5页Electric Power Automation Equipment

基　　金：国家电力公司重点科研项目(SP11-2002-01-09);华北电力大学博士学位教师科研基金项目(20041201)~~

摘　　要：针对动态电压恢复器DVR(Dynamic Voltage Restorer)电压补偿信号的不确定性,根据选择的DVR逆变电路进行了无差拍控制算法研究。对于任意负载模型,利用系统的状态方程和状态变量的信息,结合状态观测器和电压、电流预测算法,推算出下一采样周期的逆变器开关控制量,使输出电压跟踪参考电压,实现了对不确定电压补偿分量的跟踪补偿控制。提出了一个具体的实现方案,仿真结果验证了算法的正确性和可行性。Aiming at the uncertainty of voltage compensation signals of DVR(Dynamic Voltage Restorer),the deadbeat control is studied on the inverter circuitry selected. Based on the state equa-tions and state variables information of the system,a specific scheme is presented to realize vol-tage waveform tracking compensation. Combining the state observer with voltage and current forecast algorithm,it calculates switch control signals for next sampling period for random load. The output voltage is thus tracking the reference voltage. The simulative results show it correct and feasible.

关 键 词：动态电压恢复器 电能质量 无差拍控制 逆变器 采样周期 

分 类 号：TM464[电气工程—电器]