混沌抑制传导干扰的电源管理芯片实验研究  

Experimental Studies of Power Management Chip for Chaos Suppressing Conducted Interference

作　　者：刁家骐 杨汝 刘佐濂[1] 胡维[3] DIAO Jia-qi;YANG Ru;UU Zuo-lian;HU Wei(Guangzhou University,Guangzhou 510006,China;不详)

机构地区：[1]广州大学,物理与电子工程学院,广东广州510006 [2]广州大学,机械与电气工程学院,广东广州510006 [3]广州大学,实验中心,广东广州510006

出　　处：《电力电子技术》2020年第6期13-16,共4页Power Electronics

基　　金：广东省科技计划(2017A010101040);广东省自然科学基金团队项目(1714060000016)。

摘　　要：对刘氏混沌系统的硬件实验电路进行优化,使用最少的元件实现了混沌系统,达到了减小功率的目的。仿真和电路实验的结果验证了该优化硬件电路的正确性和实用性。将刘氏混沌电路与电源管理芯片相结合,做出了一款含有混沌扩频功能的电源管理芯片,在AC/DC反激变换器上进行了详尽的实验研究以及传导电磁干扰(EMI)测试。实验结果表明,使用混沌脉宽调制(PWM)控制信号的方法,可以实现PWM信号频谱在开关频率周围的连续分布,并且对比定频、周期扩频和混沌扩频的传导EMI测试曲线,可以得出混沌抑制传导EMI效果最好的结论。The realization of Liu chaotic system of an electronic circuit is optimized and using least components to implement this chaotic circuit can reduce the power at the same time.The results of computer simulation and circuit experiment verify the correctness of the optimized hardware circuit.Combining the above Liu chaotic circuit with a power management chip,the AC/DC converter is used for experimental research and conducted electromagnetic interference(EMI)test.Using the chaotic pulse width modulation(PWM)control signal,spectrum of PWM can be achieved continuous,and by comparing the EMI test of fixed frequency,periodic spread frequency and chaotic spread frequency,we can draw the conclusion that chaos suppression conducted EMI has the best effect.

关 键 词：电源 混沌系统 电磁干扰 反激变换器 

分 类 号：TN86[电子电信—信息与通信工程]