基于双环控制的Buck DC-AC逆变器  

Buck DC-AC Inverter Based on Double-Loop Control

作　　者：陈江辉[1] 谢运祥[1] 黄敏俊[1] 明宗峰[1] 陈敬峰[1] 

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2009年第2期147-151,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(05006521)

摘　　要：为了提高Buck DC-AC逆变器的动态特性,改善系统的鲁棒性及抗负载扰动的能力,提出一种带电流前馈的双环控制器.该控制器采用全状态反馈的电压和电流双环控制策略,改善了逆变器系统的动态响应性能,提高了稳态性能;另外,电流前馈环的使用也使系统的抗负载扰动能力显著提高.实验结果表明,双环控制中的内环增大了逆变器控制系统的带宽,加快了逆变器的动态响应,提高了稳态精度,对负载扰动也有较高的抑制能力.In order to improve the dynamic characteristics, robustness and anti-disturbance performance of Buck DC-AC inverters, a double-loop controller with current feedforward is presented. In this controller, the full-state feedback scheme is adopted to implement the double-loop control of voltage and current, thus improving the dynamic response as well as the steady-state performance of the inverter system. Moreover, a current feedforward loop is em- ployed to improve the anti-disturbance performance of the inverter system. Experimental results indicate that the inner loop in the double-loop controller enlarges the bandwidth of the inverter control system, quickens the dynamic response, increases the steady-state precision, and restrains the load turbulence.

关 键 词：BUCK变换器 双环控制 逆变器 动态响应 

分 类 号：TM464[电气工程—电器]