摘要
为了满足超级电容器储能系统在实际应用中输出电压的精确调节以及超级电容器组充放电过程中端电压宽范围变化的要求,同时追求储能系统的高效率、高功率密度和高可靠性,提出了一种新颖的级联双向Buck/Boost-LLC DC/DC变换器拓扑,并通过主开关器件热学仿真和损耗的理论计算对比分析了系统效率,结果表明,该拓扑结构新颖,能够全负载范围内实现软开关,大大降低了功率变换器的开关损耗,提高了储能系统的工作效率和功率密度。最后基于IP发射机中超级电容器储能系统的实际应用进行了实验研究,实验结果验证了该拓扑的可行性和优越性。
During the charging and discharging process of the super capacitor units,in order to meet the requirement of the precise adjustment on the output voltage of super capacitor energy storage system in the practical application and the wide range change of the terminal voltage,a novel cascaded bi-directional DC/DC Buck/Boost-LLC converter is proposed. Meanwhile,the converter can also meet the demand of pursuing the high efficiency,high power density and high reliability of the energy storage system. System efficiency is analyzed through the thermal simulation analysis of main switch device and loss calculation. The results show that this kind of topological structure is novel,and it can realize soft switching in full load range. From this point,it can substantially reduce the switching loss of the power converter and improve the working efficiency and power density of the energy storage system. Finally,the experimental study is carried out with the energy storage system of the super capacitor in IP transmitter,and the experimental results verify the feasibility and superiority of the proposed topology.
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2018年第1期103-109,共7页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(61703144)
河南省高等学校控制工程重点学科开放实验室基金项目(KG2016-01)
河南省高等学校重点科研项目(18B470005)
全国大学生创新创业训练计划项目(201710460046)
