首页>
外国专利>
Uninterruptible power supply and selective cut-off method for uninterruptible power supply
Uninterruptible power supply and selective cut-off method for uninterruptible power supply
展开▼
机译:不间断电源及不间断电源的选择性切断方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
UPS performance failure is determined independently by itself. Selective tripping can be done within a shorter time than one cycle of an AC output. A UPS converts a DC voltage to an AC voltage and supplies the AC voltage to a load device. A UPS has a control unit identifying a resistance value of an internal resistance as an internal impedance of the UPS by using an instantaneous value of an internal voltage and current and conducting a failure determination by detecting abnormal fluctuation of the value. It is preferred that an identification of the internal impedance is done through a system identification unit.
展开▼