A bidirectional DC-DC converter for an energy storage system with galvanic isolation
A bidirectional DC-DC converter for an energy storage system with galvanic isolation
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DOI：
10.1109/tpel.2007.909248
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发表时间：
2007-11-01
影响因子：
6.7
通讯作者：
Akagi, Hirofumi
中科院分区：
文献类型：
--
作者：
Inoue, Shigenori;Akagi, Hirofumi
本文提出了一种适用于具有电流隔离功能的储能系统的双向DC-DC转换器。诸如双电层电容器的储能装置直接连接到DC-DC转换器的直流侧，而不需要任何斩波电路。然而，当储能装置两端的电压随着其放电而下降时，DC-DC转换器可以继续工作。理论计算和实验测量表明，功率损耗和峰值电流对允许的直流电压范围有限制。这些信息可能对DC-DC转换器的设计有用。实验结果验证了200V、2.6kJ储能系统实验室模型的充放电操作是正确的。此外，DC-DC转换器可以将电容器组从零充电到额定电压，而不需要任何外部预充电电路。
This paper addresses a bidirectional dc-dc converter suitable for an energy storage system with an additional function of galvanic isolation. An energy storage device such as an electric double layer capacitor is directly connected to a dc side of the dc-dc converter without any chopper circuit. Nevertheless, the dc-dc converter can continue operating when the voltage across the energy storage device drops along with its discharge. Theoretical calculation and experimental measurement reveal that power loss and peak current impose limitations on a permissible dc-voltage range. This information may be useful in design of the dc-dc converter. Experimental results verify proper charging and discharging operation obtained from a 200-V, 2.6-kJ laboratory model of the energy storage system. Moreover, the dc-dc converter can charge the capacitor bank from zero to the rated voltage without any external precharging circuit.