A multi-level voltage-sharing resonant zero-current soft-switching DC-DC converter, which is composed of a direct-current voltage-sharing capacitor bank and two-port DC-DC resonant soft-switching conversion units connected to capacitors in the direct-current voltage-sharing capacitor bank. For the converter with the number of levels being (m + 1) (m is an integer greater than or equal to 2, same below), the direct-current voltage-sharing capacitor bank is composed of m direct-current voltage-sharing capacitors (Cm, C(m - 1),..., C2, and C1) which are sequentially connected in series from top to bottom, and the potentials of the various capacitors (Cm, C(m - 1),..., C2, and C1) in the direct-current voltage-sharing capacitor bank are sequentially lowered from top to bottom. At least (m - 1) two-port DC-DC resonant soft-switching conversion units are connected to various capacitors in the direct-current voltage-sharing capacitor bank. The converter realizes voltage self-balancing for a capacitor. All switching tubes and diodes realize zero-current switching. Various two-port DC-DC resonant soft-switching conversion units operate independently without affecting one another. The whole converter system has the characteristics of structure modularization and a simple control mode.
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机译：一种多级均压谐振零电流软开关DC-DC转换器，由直流均压电容器组和与该电容器中的电容器相连的两端口DC-DC谐振软开关转换单元组成。直流均压电容器组。对于电平数为（m + 1）的转换器（m为大于等于2的整数，下同），直流电压共享电容器组由m个直流电压共享电容器组成（C m ，C （m-1），...，C 2 和C 1 ）从上到下依次串联，以及各个电容器（C m ，C （m-1），...，C 2 和C 1 ）从上到下依次降低。至少（m-1）个两端口DC-DC谐振软开关转换单元连接到直流电压共享电容器组中的各种电容器。该转换器实现电容器的电压自平衡。所有开关管和二极管均实现零电流开关。各种两端口DC-DC谐振软开关转换单元独立运行，互不影响。整个变流器系统具有结构模块化，控制方式简单的特点。
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