电工技术学报2017，Vol.32Issue(14)：66-76,11.DOI:10.19595/j.cnki.1000-6753.tces.170628
一种基于损耗模型的 双有源桥DC-DC变换器效率优化方法
An Efficiency Optimization Method in Dual Active Bridge DC-DC Converter Based on Loss Model
摘要
Abstract
This paper focuses on the loss model and efficiency optimization of dual active bridge (DAB) DC-DC converter. First, the single phase modulation principle is shown and the current RMS value is derived analytically. Voltage transfer ratio is introduced to characterize the current waveform, which is related to the transformer ratio. The energy loss of DAB can be divided into two parts, one from device power dissipations, and the other from power loss in electromagnetic elements, such as the transformer and inductance. Their loss values are both related to material choices, and also affected by operation states including transfer power, voltage and current value. Combined the current and voltage waveforms with element material features, DAB loss model is built in a steady operation. Furthermore, by numerical calculation of the loss model, voltage transfer ratio and phase shift duty are optimized aiming at high efficiency. At last, a 4kW-DAB platform is built and the optimization method is tested by experimental results.关键词
双有源桥DC-DC变换器/损耗模型/高频隔离变压器/电压转换比/效率优化Key words
Dual active bridge (DAB) DC-DC converter/loss model/high frequency isolated transformer/voltage transfer ratio/efficiency optimization分类
信息技术与安全科学引用本文复制引用
李婧,袁立强,谷庆,孙建宁,段任之..一种基于损耗模型的 双有源桥DC-DC变换器效率优化方法[J].电工技术学报,2017,32(14):66-76,11.基金项目
国家自然科学基金重大项目资助(51490680,51490683). （51490680,51490683）
