考虑电流应力优化的DAB电压模型预测控制

沈艳霞,魏硕,张伟

Voltage model predictive control of DAB converter considering current stress optimization

Yanxia SHEN,Shuo WEI,Wei ZHANG

表 1 半周期内各时刻的电感电流

Tab.1 Inductance current at each moment in half cycle

模式 电感电流 模式1 $ \begin{aligned}{i}_{{L}}({t}_{1})&=-\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[r-1-(r+1){D}_{1}+2{D}_{2}]\\{i}_{{L}}({t}_{2})&=\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[1+r(2{D}_{2}-1-{D}_{1})]\\{i}_{{L}}({t}_{3})&=\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[(r-1){D}_{1}+r(2{D}_{2}-1)+1]\\{i}_{{L}}({t}_{4})&=\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[(r-1)(1-{D}_{1})+2{D}_{2}]\end{aligned} $ 模式2 $ \begin{aligned}{i}_{{L}}({t}_{1})&={i}_{\textit{L}}({t}_{2})=-\dfrac{n{V}_{2}}{4{f}_{\text{s}}{\mathrm{L}}_{\text{r}}}[(r-1)(1-{D}_{1})]\\{i}_{{L}}({t}_{3})&=\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[(1-r)(1-{D}_{1})+2{D}_{2}]\\{i}_{{L}}({t}_{4})&=\dfrac{n{V}_{2}}{4{f}_{\text{s}}{L}_{\text{r}}}[(r-1)(1-{D}_{1})+2{D}_{2}]\end{aligned} $