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江苏科技信息 ›› 2015, Vol. 32 ›› Issue (15): 54-55.doi: 10.3969/j.issn.1004-7530.2015.15.015

• 论文 • 上一篇    下一篇

基于前馈电流控制的逆变器控制方法的研究

曹皖诚, 沈昊骢, 蔡林君   

  1. 东南大学,江苏南京,210096
  • 出版日期:2015-05-25 发布日期:2015-05-25

Research on the Inverter Control Method Based on the Feed-Forward Current Control

Cao Wancheng, Shen Haocong, Cai Linjun   

  • Online:2015-05-25 Published:2015-05-25

摘要： 文章针对非线性负载波动对逆变电源的影响，结合单相逆变器状态模型，在原有PI双环控制的基础上，提出了一种数字化控制方案，通过负载电流前馈控制的方式，有效抑制负载突变导致的过电流，并通过极点配置的方式对逆变器PI控制参数进行整定，最后在Matlab/Simulink中进行仿真研究。仿真结果表明，带负载电流前馈的双环控制方法可以在负载波动条件下有效抑制输出电压波动，对非线性负载突变引起的过电流具有很好的抑制能力，鲁棒性强，同时，极点配置的方式对PI控制参数进行整定，计算简单，对逆变器控制的研究具有很好的参考价值。

关键词: 逆变器, 前馈控制, 闭环控制, PI参数整定

Abstract: For the nonlinear load fluctuation’s influence on the inverter power supply,combined with the single-phase inverter state model,based on the original PI loop control,this study puts forward one digital control method. Firstly,use the feed-forward current of load to restrain the over-current caused by the load mutation;Secondly, tuning the parameters of the inverter’s PI-controller through the pole placement method;Finally,the simulation of Matlab is provided.Simulation shows that the method of double loop control with load current feed-forward can effectively suppress the fluctuation of the output voltage caused by load fluctuation ,for the over-current of the nonlinear load mutation has also good inhibitory ability ,strong robustness.Meanwhile the pole placement method of tuning the inverter’s PI-controller’s parameters is easy to calculate.This study has a good value of reference for the study of inverter.