Power converter
申请(专利)号： JP20080008299
专利号： JP4934600B2 主分类号： H02J9/06
申请权利人： 株式会社日立製作
所 公开国代码： JP 优先权国家： JP
摘 要：
PROBLEM TO BE SOLVED: To continue electric power supply to a load even when phases of an inverter output and commercial power supply do not
synchronize, and to keep an allowable value of a load current at switching within a tolerance.;SOLUTION: A phase
difference measuring circuit 19 of a power converter measures a phase difference of the commercial power supply on the basis of the output of an inverter 4. If a voltage phase difference level evaluating circuit 10 determines that the output of the inverter 4 and the commercial power supply are asynchronous, a switching command 15 at phase difference
asynchronization is delayed by a variable timing delay 21 only by a phase difference measured by the phase
difference measuring circuit 19, and the electric power supply by the commercial power supply 1 is started, when the electric power supply is shut off by the inverter 4 of an electric power supply selector 5.;COPYRIGHT:
申请日： 2008-01-17 公开公告日： 2012-05-16
分类号： H02J9/06;
H02M7/48 发明设计人： 宮田 博昭;
国貞 秀明 申请国代码： JP
优先权： 20080117 JP
2008008299
摘 要 附 图：
(C)2009,JPO&INPIT 主权项：
負荷への給電をインバータによる給電から商用電源による給電に切換える電源切換部と、
前記インバータの出力と前記商用電源との位相差が一定範囲内であるか否かを検出することにより、前記インバータの出
权 利 要 求 说 明 书
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Power converter
