摘要
提出了一种简单实用的改善矩阵变换器系统动态特性和稳定性的虚拟电阻方法。矩阵变换器系统存在潜在不稳定的根本原因是输入滤波器对不同次数的谐波的传输系数不同。论文提出采用虚拟电阻算法代替实际电阻来衰减系统中LC输入滤波器的振荡,不增加任何的损耗,提高了系统的效率,改善了系统的动态性能和稳定性。仿真结果证明了所提出方法的正确性和可行性。
A novel control method to improve the dynamic performance and stability of matrix converter system is presented. The reason for potential instability in the presence of input filter is the different gains of input filter for different frequency. The control method of virtual resistance is used to replace the physical resistance to damp the oscillation of LC filter. The proposed method can improve dynamic performance and stability without increasing loss and sacrificing efficiency. Simulation results verify the correctness and availability of the proposed method.
出处
《电工技术学报》
EI
CSCD
北大核心
2005年第12期18-23,共6页
Transactions of China Electrotechnical Society
基金
湖南省自然科学基金资助项目(05JJ30102)
关键词
虚拟电阻
输入滤波器
矩阵变换器
稳定性
Virtual resistance, input filter, matrix converter, stability
