摘要
由于DC-DC开关变换器中固有的混沌现象可以用来提高电磁兼容(EMC)性,故量化其混沌行为有着重要的意义.文中通过建立DC-DC变换器的混沌模型,得到其相应的混沌映射,进而利用特征向量法对该混沌映射的不变分布进行求解,实现了基于混沌特性的量化.并以峰值电流控制的Boost变换器为例,说明了DC-DC变换器混沌映射的不变分布的量化方法,为进一步利用混沌特性降低DC-DC变换器的电磁干扰(EM I)打下了理论基础.
As the inherent chaotic behavior of DC-DC converter helps to improve its EMC （Electromagnetic Compatibility）, the quantitative calculation of the chaos is very important. In this paper, the chaotic mapping of DC-DC converter is obtained by first establishing the chaotic model. Then, the eigenvector method is adopted to solve the invariant probability distribution of the chaotic mapping, thus achieving the chaotic quantitative calculation based on the chaotic characteristics. A peak current mode-controlled Boost converter is finally selected as an example for calculating the invariant probability distribution. All the details mentioned above lay a theoretical basis for the suppression of EMI （Electromagnetic Interference） of DC-DC converter according to the chaotic characteristics.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第9期1-5,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(60474066)
广东省自然科学基金重点资助项目(05103540)
关键词
BOOST变换器
混沌量化
电磁干扰
特征向量法
DC-DC变换器
Boost converter
chaotic quantitative calculation
electromagnetic interference
eigenvector method
DC-DC converter
