用于电池储能应用的串联升降部分功率转换器的性能评估
Qian Liu1, Long Jing1, Wenzheng Xu2
1National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing, 100044, China.
Scientific reports
|January 16, 2026
概括
一种新型的串联升降部分功率转换器 (SUDPPC) 提高了电池储能效率和功率密度. 这种创新设计显著降低了组件应力,并处理最小的活性功率,实现高效率的峰值.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 储能系统 储能系统 储能系统
背景情况:
- 用于电池储能的传统全功率转换器 (FPC) 存在大型组件和低效率的问题.
- 在储能领域需要更高效,更紧的功率转换解决方案.
研究的目的:
- 为改进电池储能提出和分析串联式升降部分功率转换器 (SUDPPC).
- 为了降低转换器组件的电压和电流压力,同时提高功率密度.
主要方法:
- 拟议的SUDPPC拓组合了一个LLC共振转换器与一个全桥转换器.
- 对功率分配,元件应力因子 (CSF) 和非活性功率的分析.
- 与现有的FPC和步进部分功率转换器 (SUPPC) 拓进行比较.
主要成果:
- SUDPPC显著降低了组件应力,并增加了功率密度.
- 使用1.1千瓦原型的实验验证证证了理论分析.
- 在完全负载条件下,仅处理了总活性功率的14.3%,达到98.15%的峰值效率.
结论:
- 在电池储能应用中,SUDPPC为传统的FPC提供了优质的替代方案.
- 该拓使得高功率密度,降低组件应力和高效率.
- 拟议的设计适用于储能系统中的通用系列互连方案.
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