摘要
在现有高增益变换拓扑不足的基础上,以峰值电流控制(PCMC)的Boost变换器为例,提出一种利用变换器非线性特性提高其增益的新方法,即利用变换器在混沌状态下的多周期轨道特性,采用混沌控制方法,使变换器稳定工作在具有较高增益的目标轨道上,实现高增益变换。该方法无需构造新的变换器拓扑,不增加电路的复杂度,弥补了现有高增益变换技术的不足,并可推广应用于高阶DC/DC变换器,因而在新能源、可再生能源系统中将具有广泛的应用前景。
A new scheme to realize the high gain of DC/DC converters is put forward which is verified by simulations in a peak-current-mode-controlled（PCMC） Boost converter.In this new scheme, nonlinear dynamics of converters wor- king in chaotic state are utilized to search the target orbits with larger values, and then the basic DC/DC converters would be stabilized on the desired orbits to obtain a higher voltage gain, with the help of target-oriented methods of chaos control.Without considering the design and analysis of new topologies, nonlinear control strategies could help to achieve high gain in basic converters in our scheme.As there is no addition on the complexity of the main circuits, the proposed control scheme can be promoted to high-order DC/DC converters and therefore could be applied widely in renewable energy system.
出处
《电力电子技术》
CSCD
北大核心
2017年第12期26-29,共4页
Power Electronics
基金
广东省自然科学基金(2014A030313247)
广东省自然科学基金团队项目(2017B030312001)~~
关键词
变换器
高增益
混沌控制
converter
high gain
chaos control
