摘要
LLC谐振变换器能以很小的工作频率变化,调节宽范围的输出功率,在全负载变化范围实现功率开关管的零电压开通和零电流关断。此处选取数字信号处理器(DSP)作为控制单元,设计了基于DSP的LLC谐振变换器,并通过分析给出了实现数字PI控制的具体算法和系统软件设计。最后给出了模块样机的实验波形,验证了理论分析的正确性。
A LLC resonant topology is studied and applied widely to derive efficiency and cost optimal design.In the LLC converter, a wide range of output power is controlled with only a narrow variation in operating frequency.Also, ZVS turn on and ZCS turn off of MOSFETs can be achieved over the entire operating range.DSP is selected as con- trol IC to design a DSP based LLC resonant converter.Then, the digital PI algorithm and the design of system soft- ware are given.Finally experimental results are presented to verify this concept.
出处
《电力电子技术》
CSCD
北大核心
2012年第5期14-16,共3页
Power Electronics
关键词
变换器
谐振
数字信号处理器
converter
resonant
digital signal processor
