摘要
提出了一种优化的LLC谐振电路控制方法。该方法可使LLC电路运行在一个宽的负载条件下,同时能在负载切换时有一个好的闭环动态效果。提出的方法在稳态时采用并行双PID控制,由此解决了常规PID无法解决的负载宽度问题;在负载变化时采用基于状态轨迹法的优化控制来实现常规PID无法快速调节的问题。利用这2种控制方法的组合实现了在400 V/24 V 150 W的半桥LLC电路上的仿真验证与实验样机验证。
This paper presents an optimized control which makes LLC resonant converters operate with a wider load range and provides good closed-loop performance. The proposed control employs two paralleled digital compensations to guarantee the good closed-loop performance in a wide load range during the steady state, and an optimized trajectory control will take over to change the gate-driving signals immediately at the load transients. Finally, the proposed control has been implemented and tested on a 150 W 400 V/24 V LLC resonant converter and the result validates the proposed method.
出处
《重庆理工大学学报(自然科学)》
CAS
2017年第6期166-170,204,共6页
Journal of Chongqing University of Technology:Natural Science
基金
东南大学国家工程实验室与苏州博创公司合作项目