基于改进的无差拍控制方法在单相并网逆变器中的应用  

Improved Deadbeat Control Method for Single-phase Grid-connected System

作　　者：杨露露[1] 时斌[1] 闻枫[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096

出　　处：《水电能源科学》2014年第5期172-175,共4页Water Resources and Power

摘　　要：为有效提高并网电流的质量,基于无差拍电流控制方法,提出了改进的无差拍控制方法,采用线性推导的方法得到更加精确的电感电流值,同时采用采样点可变的控制策略,有效地避免开关噪声,并进行了MATLAB/Simulink软件仿真验证。结果表明,改进的无差拍控制方法不仅能降低成本和简化电路,且具有更好的动态抗干扰能力和较好的稳态特性,对系统模型的依赖更少。In order to improve the quality of grid-connected current effectively, an improved deadbeat control method is proposed based on the principle of deadbeat current control method. The method of linear derivation is used to determine more accurate value of the inductor current. And then a variable sampling control strategy is adopted to avoid switching noise effectively. Finally, the method is verified by MATLAB/Simulink. The results show that the improved deadbeat controller can not only reduce cost and simplify circuit, but also has better dynamic anti-interference and steady state characteristics as well as less dependence of the system model.

关 键 词：逆变器 改进的无差拍控制方法 单相并网 仿真 

分 类 号：TM615[电气工程—电力系统及自动化]