摘要
基于Zeta变换器和Super Buck变换器,构造了一种新颖的航天用三端口非隔离变换器。构造的拓扑可以实现光伏、负载和蓄电池之间能量相互流动,避开了Buck-Boost输出负电压问题,同时Zeta和Super Buck共用了双电感,提高了效率。分析各个模式的增益特性并设计了基于跨导分域控制和最大功率跟踪控制竞争的控制策略,通过PLECS仿真证明了控制策略的有效性。最后,基于TMS320F28335搭建了一台400W样机,实现了对该拓扑的数字控制并验证了拓扑的可行性。
This paper presents a novel three port non-isolated converter based on Zeta converter and Super Buck converter for space applications. The proposed topology can achieve photovoltaic, load and battery energy flow between each other, and avoid the negative output voltage of the Buck-Boost. Benefit form shared inductor of Zeta and Super Buck, efficiency can easily be improved. This paper analyses the gain characteristics of each mode and design the control strategy based on competition of transconductance control and the maximum power tracking control strategy. Control strategy is verified by PLECS simulation. Finally, a 400 W prototype is built based on TMS320 F28335, which realizes the digital control of the topology and verifies the feasibility of the topology.
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第A02期139-147,共9页
Transactions of China Electrotechnical Society
基金
上海市科技计划项目(15111101702)
深圳市基础研究项目(JCYJ20150403161923505)资助
