中文摘要：

针对多相交错并联双向DC/DC变换器中的耦合电感器设计困难这一问题,提出具有普遍适用性的耦合电感器通用设计准则。以电感全部对称型耦合电感器的Buck＋Boost型交错并联磁集成双向DC/DC变换器为例,研究变换器的Buck模态转换规律,得到变换器的等效稳态电感和等效暂态电感表达式,推导出变换器的稳态电流纹波和暂态电流响应速度与占空比、相数及电感耦合系数之间的关系。总结出交错并联双向DC/DC变换器中耦合电感的通用设计准则,按照这一准则,在给定占空比时,通过合理选择耦合电感器的耦合系数,可以既减小稳态相电流纹波又提高暂态输出电流响应速度。最后,通过实验验证了通用设计准则的正确性。

英文摘要：

In order to solve the design problem of coupled inductors in multiphase interleaving bidirectional DC/DC convertors, the universal design criterion of coupled inductors with general applicability was proposed. The Buck ＋ Boost interleaving and magnetically integrated bidirectional DC/DC converter was studied under Buck mode with all inductors coupled symmetrically. By analyzing the distribution of modes, the expressions of universal equivalent steady state inductors and transient inductors in multiphase interleaving and magnetically integrated bidirectional DC/DC converters were got. The relationship among steady state current ripple, transient current response speed, duty circle, number of phases and coupling coefficient was deduced. The universal design criterion of coupled inductors in multiphase interleaving and magnetically integrated bidirectional DC/DC converters was summarized. When coupling coefficient was chosen under the design criterion with a constant duty circle, the steady state phase current ripple could be reduced and the transient total output current response speed could be improved at the same time. At last, the design criterion was verified by experiments.