摘要
在某些电路参数条件下,电流控制型Buck-Boost变换器会处于混沌状态,此时它不能正常工作。提出一种立方差形式控制器来控制电流控制型Buck-Boost变换器的混沌状态,并通过分析周期状态的庞加莱截面、周期状态的电感电流波形和周期状态的相图验证了这种混沌控制策略的有效性。结果表明,该策略不需要预先确定期望的目标轨道,不依赖于电流控制型Buck-Boost变换器的内部电路参数,只需要通过调整一个外部可调参数即可将电流控制型Buck-Boost变换器的混沌状态控制在周期2、3、4、6、8轨道。
The current-controlled Buck-Boost converter does not work well when it is under chaotic state for some circuit parameters. A controller in the form of difference of cubes is proposed to control the chaotic state of the current-controlled Buck-Boost converter and the validity of this chaos control scheme is confirmed by analysing Poincare sections, inductor current waveforms and phase portraits of periodic states. Results show that this scheme need not determine the desired targeting orbits beforehand. Moreover, this scheme does not depend on internal circuit parameters of the current-controlled Buck-Boost converter and can control the chaotic state of the current-controlled Buck-Boost converter to the period-2, period-3, period-4, period-6 and period-8 orbits via adjusting an external adjustable parameter.
出处
《控制工程》
CSCD
北大核心
2017年第12期2405-2411,共7页
Control Engineering of China
基金
国家自然科学基金(61074088)
