{"id":415,"date":"2014-04-01T09:43:34","date_gmt":"2014-04-01T00:43:34","guid":{"rendered":"http:\/\/isy2.wordpress.com\/?p=415"},"modified":"2014-04-01T09:43:34","modified_gmt":"2014-04-01T00:43:34","slug":"%e5%8e%9f%e8%91%97%e8%ab%96%e6%96%87%ef%bc%9a%e9%ab%98%e9%9b%bb%e5%9c%a7%e7%9b%b4%e6%b5%81%e7%b5%a6%e9%9b%bb%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0%e3%81%ab%e7%94%a8%e3%81%84%e3%82%8b%e7%b5%b6%e7%b8%81","status":"publish","type":"post","link":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=415","title":{"rendered":"Full Paper\uff1a\u9ad8\u96fb\u5727\u76f4\u6d41\u7d66\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u7528\u3044\u308b\u7d76\u7e01\u5f62\u30d5\u30eb\u30d6\u30ea\u30c3\u30b8DC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30b5\u30fc\u30b8\u89e3\u6790\u304a\u3088\u3073\u5bfe\u7b56"},"content":{"rendered":"<p><a href=\"http:\/\/jlc.jst.go.jp\/DN\/JST.JSTAGE\/ieejias\/133.1171\">\u9ad8\u96fb\u5727\u76f4\u6d41\u7d66\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u7528\u3044\u308b\u7d76\u7e01\u5f62\u30d5\u30eb\u30d6\u30ea\u30c3\u30b8DC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30b5\u30fc\u30b8\u89e3\u6790\u304a\u3088\u3073\u5bfe\u7b56<\/a><\/p>\n<p>\u96fb\u6c17\u5b66\u4f1a\u8ad6\u6587\u8a8c\uff24\uff08\u7523\u696d\u5fdc\u7528\u90e8\u9580\u8a8c\uff09Vol. 133 (2013) No. 12 P 1171-1178<\/p>\n<p>\u571f\u672c \u548c\u79c01), \u77f3\u585a \u6d0b\u4e001), \u4e8c\u5bae \u4fdd2), \u5b89\u90e8 \u5f81\u54c92), \u30b7\u30de\u30f3\u30b8\u30e7\u30e9\u30f3 \u30ec\u30b8\u30a7\u30ad3), \u5c71\u53e3 \u6d693), \u52a0\u8cc0 \u96c5\u4eba4)<\/p>\n<p>1) \u9577\u5d0e\u5927\u5b66\u5927\u5b66\u9662\u5de5\u5b66\u7814\u7a76\u79d1 2) \u56fd\u969b\u6771\u30a2\u30b8\u30a2\u7814\u7a76\u30bb\u30f3\u30bf\u30fc 3) \u7523\u696d\u6280\u8853\u7dcf\u5408\u7814\u7a76\u6240 4) (\u682a) NTT \u30d5\u30a1\u30b7\u30ea\u30c6\u30a3\u30fc\u30ba \u7814\u7a76\u958b\u767a\u672c\u90e8<\/p>\n<p>\u30ad\u30fc\u30ef\u30fc\u30c9: \u9ad8\u96fb\u5727\u76f4\u6d41\u7d66\u96fb\u30b7\u30b9\u30c6\u30e0, \u7d76\u7e01\u5f62DC-DC\u30b3\u30f3\u30d0\u30fc\u30bf, \u30b5\u30fc\u30b8\u89e3\u6790, \u9ad8\u5468\u6ce2\u7b49\u4fa1\u56de\u8def, \u30b5\u30fc\u30b8\u30b9\u30ca\u30d0<\/p>\n<p>In an isolated DC-DC converter utilized in a high-voltage DC power distribution system for data centers, a large surge voltage occurs across the secondary-side diodes owing to the transformer&#8217;s leakage inductance, necessitating diodes with a large withstand voltage. However, these diodes cause large power losses owing to relatively large ON-resistances. First, this study analyzes surge occurrences using a high-frequency equivalent circuit. Second, the surge-suppression capability of a simple snubber capacitor is examined, and the surge-voltage evaluation through analysis using high-frequency equivalent circuits is described. This is followed by experimental confirmation with SiC diodes. Finally, the minimum capacitance of the surge-snubber capacitor is determined for miniaturization.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9ad8\u96fb\u5727\u76f4\u6d41\u7d66\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u7528\u3044\u308b\u7d76\u7e01\u5f62\u30d5\u30eb\u30d6\u30ea\u30c3\u30b8DC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30b5\u30fc\u30b8\u89e3\u6790&#8230; <a class=\"more-link\" href=\"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=415\">Continue Reading 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