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2. 发明公开

EP1677410A1 Isolated bidirectional DC-DC Converter 有权转让
标题翻译： Bidirektionaler Gleichspannungstrennwandler
公开(公告)号：EP1677410A1
公开(公告)日：2006-07-05
申请号：EP05018082.7
申请日：2005-08-19
申请人： HITACHI, LTD.
发明人： Shoji, Hiroyuki , Kanouda, Akihiko , Saito, Ryuichi , Yukutake, Seigou , Higuchi, Katsuhiro
IPC分类号： H02M3/335
CPC分类号： H02M1/34 , H02M3/33584 , H02M2001/342 , Y02B70/1491
摘要： The DC-DC converter connects a first and a second switching circuit for converting power mutually between direct current and alternating current respectively to a first DC power source 10 and a second DC power source 90 and has a transformer 40 between the AC terminals thereof. Here, between the AC terminals of the second switching circuit and the negative pole terminal of the DC power source 90, a voltage clamp circuit 70 composed of a series unit of switching devices 21 and 23 with a reverse parallel diode and a clamp condenser 71 is connected.
An isolated bidirectional DC-DC converter which prevents a reduction in a circulating current at time of buck and an occurrence of a surge voltage at time of voltage boost and realizes highly efficiency, low noise, and miniaturization is provided.
摘要翻译： DC-DC转换器将用于将直流和交流之间的电力相互转换的第一和第二开关电路分别连接到第一直流电源10和第二直流电源90，并且在其AC端子之间具有变压器40。这里，在第二开关电路的交流端子和直流电源90的负极端子之间，由具有反向并联二极管的开关器件21和23的串联单元和钳位电容器71构成的电压钳位电路70是连接的。提供一种隔离的双向DC-DC转换器，其防止降压时的循环电流的降低和在升压时的浪涌电压的发生，并且实现高效率，低噪声和小型化。

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