【摘要】 该文提出一种两相交错并联三电平双向DC-DC变换器功率均衡解耦控制策略，并有效地减少了电流传感器的使用。通过对变换器拓扑工作原理的分析，得出两相交错三电平拓扑的等效两电平分析方法。在此基础上，提出基于总电流分时倍频采样功率均衡解耦控制策略，使变换器的电压调节与相间电流均衡控制实现了完全解耦。此外，将常规均衡控制所需的四路电流采样，减少为两路，达到了简化控制结构的目的。建立基于等效拓扑下的小信号模型，利用该模型对所提方案进行理论验证，并给出控制器参数的具体设计方案。最后通过小功率物理仿真实验对所提控制策略进行了有效验证。更多还原

【Abstract】 A decoupled power-balancing control strategy for the two-phase interleaved parallel three-level bidirectional DC-DC converter is proposed in this paper, and the use of current sensors is effectively reduced. By analyzing the working principle of topology, an equivalent two-level analysis method under the two-phase interleaved parallel topology is obtained. On this basis, a decoupled power-balancing control strategy based on total current time-sharing and frequency-doubling sampling is proposed to fully decouple the voltage regulation of the converter from the current-balancing control between phases. In addition, the four channels of current sampling required by the conventional balance control are reduced to two channels, which simplifies the control structure. A small signal model based on the equivalent topology is established, and the specific design scheme of the controller parameters is given. Finally, the proposed control strategy is verified by a physical experiment.更多还原