A Capacitance Design Guideline of Snubber Capacitors for Soft Switching in Bi-directional Inductive Power Transfer System Considering Battery Charging Cycle
A Capacitance Design Guideline of Snubber Capacitors for Soft Switching in Bi-directional Inductive Power Transfer System Considering Battery Charging Cycle
复制标题
考虑电池充电周期的双向感应电力传输系统软开关缓冲电容器电容设计指南
DOI：
10.1109/icrera.2018.8566766
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
N. Hoshi
中科院分区：
文献类型：
--
作者：
Ryosuke Ota;D. S. Nugroho;N. Hoshi
此前，曾提出过用于单向感应电能传输（IPT）系统的软开关方法。然而，这些方法并不适用于双向IPT系统。此外，在这些论文中没有讨论用于软开关的缓冲电容器的合适电容。为了实现降低开关损耗的软开关，需要对电容进行合理的设计。此外，为了在经常使用的充电模式中获得更高的效率，需要考虑电池充电和放电循环。因此，本文通过考虑电池充放电循环的可视化评估图，给出了IPT系统缓冲电容器的设计准则。利用该设计方法，可以很容易地确定缓冲电容的合适电容值。此外，通过实验验证了电容设计准则的有效性。实验结果表明，在实验条件下，采用缓冲电容可以实现开关管的软开关，且整个系统的效率比不采用缓冲电容时提高了0.9%。
Previously, soft switching methods for unidirectional inductive power transfer (IPT) systems were proposed. However, these methods were not applicable to bidirectional IPT system as it is. In addition, the appropriate capacitances of snubber capacitors for soft switching were not discussed in these papers. In order to achieve soft switching which can reduce switching loss, it is necessary to design the capacitances appropriately. Furthermore, it is necessary to consider the battery charging and discharging cycle in order to obtain higher efficiency in the charging pattern which is often used. Therefore, this paper shows the design guideline of the snubber capacitors for IPT systems by using the visual evaluation maps considering battery charging and discharging cycles. By using the design method, it becomes easy to decide the appropriate capacitances of the snubber capacitors. In addition, the effectiveness of the capacitances design guideline is clarified by the experiments. As the results, the soft switching could be achieved and the efficiency of the whole system with snubber capacitors could be improved by 0.9 % compared to the efficiency of the system without the snubber capacitors in the experimental condition.