双向DC/DC变换器中大功率储能电感的设计是一件困难而具有挑战性的工作,提出研究双向DC/DC变换器的交错并联磁集成理论以克服这一困难。将三相Buck+Boost双向DC/DC变换器的所有相电感集成为一个耦合电感,对磁集成后变换器运行在Buck模式下的稳态电流纹波和暂态响应速度进行深入研究,给出三相Buck+Boost交错并联磁集成双向DC/DC变换器运行在Buck模式下的设计准则,即在设计这种变换器时,应根据占空比的大小及稳态相电流纹波和暂态总输出电流响应速度的技术要求,利用该文所给出的设计公式和设计区域选择磁集成耦合电感的反向耦合系数。仿真和实验验证了理论分析的正确性。
It is difficult to design a large power energy storage inductor in a bidirectional DC/DC converter. In order to overcome this difficulty, this paper studies the interleaving and magnetic integration theory of bidirectional DC/DC converters. All the phase inductors in the three-phase Buck+Boost bidirectional DC/DC converter are interleaving and magnetically integrated to one coupled inductor. The steady-state current ripple and the transient current response speed in the Buck mode of the interleaving and magnetically integrated bidirectional DC/DC converter are studied deeply,