摘要
该文通过分析三重移相(triple phase shift,TPS)控制下双主动全桥(dual active bridge,DAB)变换器的等效电路,推导出传输功率以及电感电流有效值与控制量输入之间的统一模型,并根据控制量之间的关系,划分DAB变换器的6种工作模式。然后,通过揭示控制量的扰动对于传输功率及电感电流有效值的影响,提出针对电流有效值的全局最优化条件,统一不同功率段和不同工作模式的优化问题。全局最优化条件的解即为电感电流有效值最小的控制策略。最后搭建实验平台进行验证,实验结果证明了文中理论分析的正确性和控制策略的有效性。
By analyzing the equivalent circuit of the dual-active-bridge （DAB） controlled by TPS scheme, the general relations between the transferred power and the control variables as well as the relations between the RMS value of the inductor current and the control variables were derived. Therefore, the DAB operation can be divided into six modes. Moreover, by investigating the influence of the perturbation of control variables on the transferred power and the RMS value of the inductor current, the global optimal conditions can be deduced. Then the optimization problem for different conditions can be unified. In addition, it can be concluded that the solutions of the global optimal conditions are the optimal control method to minimize the RMS value of the inductor current. Finally, a prototype of DAB was built, and the experimental results verified the validity of the theoretical analysis and the effectiveness of the proposed modulation scheme.
作者
童安平
杭丽君
李国杰
TONG Anping HANG Lijun LI Guojie(Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiao Tong University, Minhang District, Shanghai 200240, Chin)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第20期6037-6049,共13页
Proceedings of the CSEE
基金
上海市自然科学基金(14ZR1422200)
台达环境教育基金会<电力电子科教发展计划>(DREG2015005)
国家自然科学基金项目(51477098)
国家重点研发计划(2016YFB0900201)~~
关键词
DAB变换器
TPS调制
工作模式
零电流开关
最优控制策略
dual active bridge converter
triple phase shift modulation scheme
operating mode
zero current switching
optimal control method
