A voltage balancing circuit not only can split a two-wire dc grid into a three-wire dc grid, but also can balance the voltages of series capacitors or battery packs. A half-bridge voltage balancing circuit is a simpler topology and is widely introduced. But it has not been deeply analysed. Thus, in this paper the balancing circuit with the complementary driving method is studied in detail, firstly. Secondly, for avoiding the reactive current occurred in the complementary driving method, the unipolar current driving method is also proposed. Finally, the prototype is implemented in the lab, and the simulation and experimental results verify the analyses.

中文翻译：

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两种驱动方式的半桥电压平衡电路研究

电压平衡电路不仅可以将两线式直流电网分成三线式直流电网，而且可以平衡串联电容器或电池组的电压。半桥电压平衡电路是一种更简单的拓扑，已被广泛采用。但是尚未对其进行深入分析。因此，本文首先详细研究了采用互补驱动方法的平衡电路。其次，为了避免在互补驱动方法中产生无功电流，还提出了单极电流驱动方法。最后，在实验室中实现了原型，仿真和实验结果验证了分析结果。