华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (2): 147-151.

• 动力与电气工程 • 上一篇    下一篇

基于双环控制的BuckDC—AC逆变器

陈江辉 谢运祥 黄敏俊 明宗峰 陈敬峰   

  1. 华南理工大学 电力学院, 广东 广州 510640
  • 收稿日期:2007-12-11 修回日期:2008-05-22 出版日期:2009-02-25 发布日期:2009-02-25
  • 通信作者: 陈江辉(1975-),男,博士生,主要从事电力电子装置及车载逆变电源研究. E-mail:jianghuichen@tom.com
  • 作者简介:陈江辉(1975-),男,博士生,主要从事电力电子装置及车载逆变电源研究.
  • 基金资助:

    广东省自然科学基金资助项目(05006521)

Buck DC-AC Inverter Based on Double-Loop Control

Chen Jiang-hui  Xie Yun-xiang  Huang Min-jun  Ming Zong-feng  Chen Jing-feng    

  1. School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-12-11 Revised:2008-05-22 Online:2009-02-25 Published:2009-02-25
  • Contact: 陈江辉(1975-),男,博士生,主要从事电力电子装置及车载逆变电源研究. E-mail:jianghuichen@tom.com
  • About author:陈江辉(1975-),男,博士生,主要从事电力电子装置及车载逆变电源研究.
  • Supported by:

    广东省自然科学基金资助项目(05006521)

摘要: 为了提高BuckDC—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.

关键词: Buck变换器, 双环控制, 逆变器, 动态响应

Abstract:

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.

Key words: Buck converter, double-loop control, inverter, dynamic response