基于新扩展移相双有源全桥变换器降压-升压模式下电流应力优化

基于新扩展移相双有源全桥变换器降压-升压模式下电流应力优化

陶海军, 王宏祎, 杨乃通

Current Stress Optimization in Buck-Boost Mode Based on New Extended Phase-Shift Dual Active Full-Bridge Converter

TAO Haijun, WANG Hongyi, YANG Naitong

表1 LMM优化移相组合

Tab.1 Phase-shift combinations optimized by using LMM

降压-升压	功率范围	电流应力表达式
k>1	0≤P_i≤ $\frac{2 k - 2}{k^{2}}$	2 $\sqrt{2 P_{i} (k - 1)}$
	$\frac{2 k - 2}{k^{2}}$ <P_i≤1	2k-2 $\sqrt{(1 - P_{i}) (k^{2} - 2 k + 2)}$
k<1	0≤P_i≤2k(1-k)	2 $\sqrt{2 k P_{i} (1 - k)}$
	2k(1-k)<P_i≤1	2-2 $\sqrt{(1 - P_{i}) (2 k^{2} - 2 k + 1)}$