电气传动2019，Vol.49Issue(3)：54-58,65,6.DOI:10.19457/j.1001-2095.dqcd18476
全桥LLC谐振变换器软启动混合控制策略
Hybrid Control Strategy for Full-bridge LLC Resonant Converter Based on Digital Soft-start
摘要
Abstract
Because of a huge resonant surge current at start-up for full-bridge LLC resonant converter,a hybrid control strategy with variable duty ratio and frequency at different stages of starting process was discussed. On the basis of analyzing the starting process and trajectory of resonant current,the implementation method of digital soft-start control strategy for the full-bridge LLC resonant converter was introduced in detail. A 400 W experimental prototype was built with 32-bit DSP processor as the control core. Experimental results show that the digital soft-start hybrid control strategy can significantly reduce current surge of the full-bridge LLC resonant converter,and the performance is better than the soft-start phase shift control strategy.关键词
数字控制/浪涌电流/软启动/全桥LLC谐振变换器/混合控制策略Key words
digital control/surge current/soft-start/full-bridge LLC resonant converter/hybrid control strategy分类
信息技术与安全科学引用本文复制引用
吴天文,李志忠,杨慧,李学易..全桥LLC谐振变换器软启动混合控制策略[J].电气传动,2019,49(3):54-58,65,6.基金项目
国家自然基金项目(51607142) （51607142）
陕西省自然科学研究项目(2016JM5061) （2016JM5061）
西安市科技计划项目(CXY1509(1)) （CXY1509(1）
