一种新的基于混沌的DC/DC变换器控制策略  

A Novel Control Scheme of DC/DC Converter Based on Chaos

作　　者：汪剑鸣[1] 许镇琳[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2003年第5期622-625,共4页Journal of Tianjin University：Science and Technology

摘　　要：工作在混沌状态的DC/DC变换器能够改善电路的电磁兼容性能(EMC).该文首先分析了这种方法存在的不足,然后提出了一种新的DC/DC变换器混沌控制策略.仿真研究证明,这种控制策略扩展了电感电流的功率谱,减低了在开关频率上的电流分量,从而改善了DC/DC变换器的EMC性能.In recent years, great research effort h as been made for the chaotic phenomena in DC/DC converter, and people find that electromagnetic compatibility (EMC) of DC/DC converter can be improved when it w orks chaoticly. In this paper the principle why a DC/DC converter in chaotic reg ion can improve its EMC is illuminated , and the disadvantages of this method ar e pointed out. In order to avoid the disadvantages above, a novel control scheme is submitted. Computer simulation results show that the novel scheme can spread the spectrum of inductance current and reduce the peaks at the switching freque ncy and its multiples. So the EMC of DC/DC converter is improved.

关 键 词：DC/DC变换器 控制策略 混沌状态 电磁兼容 电感电流 电力电子电路 

分 类 号：TN624[电子电信—电路与系统] O415.5[理学—理论物理]