公开(公告)号：US5804890A

公开(公告)日：1998-09-08

申请号：US815285

申请日：1997-03-11

申请人： Robert J. Kakalec ,  John S. Pendergrass

发明人： Robert J. Kakalec ,  John S. Pendergrass

IPC分类号： H02J9/06 ,  H02J7/00

CPC分类号： H02J9/062 ,  H02J2009/067 ,  Y10T307/615 ,  Y10T307/62 ,  Y10T307/625

摘要： A reserve power system for a commercial AC load provides DC power to the load when the primary power fails by providing direct current voltage power from a DC power source which enables the load to continue to operate in a normal fashion. A power system supplying commercial AC derived power to a load provides backup power by coupling DC power to the load when the primary AC power fails. AC power is supplied to a primary winding of a power transformer which also has a secondary winding side. A cable is connected, at a first end, to the secondary winding side and at a second end to a load powered by a commercial AC voltage. A battery DC voltage source and a battery charger are connected to the secondary winding side of the power transformer. The battery charger maintains the integrity of the reserve power. A voltage monitoring circuit connected to the power transformer detects a primary power failure and activates switching circuitry for connecting the DC voltage source directly to the load. A commercial AC load allows a DC voltage to be used for temporary power without adversely affecting the power cabling.

摘要翻译： 用于商业交流负载的备用电力系统通过从直流电源提供直流电压功率来故障时向负载提供直流电力，其使负载能够以正常方式继续运行。 通过在主交流电源故障时将直流电耦合到负载上，向负载提供商业交流电源的电力系统提供备用电力。 AC电源被提供给也具有次级绕组侧的电力变压器的初级绕组。 电缆在第一端连接到次级绕组侧，在第二端连接到由商用AC电压供电的负载。 电池直流电压源和电池充电器连接到电力变压器的次级绕组侧。 电池充电器保持备用电源的完整性。 连接到电源变压器的电压监视电路检测到主电源故障，并激活用于将DC电压源直接连接到负载的开关电路。 商用交流负载允许将直流电压用于临时电源，而不会对电源线路产生不利影响。