Dual AC-input power system architectures

Power systems for data-processing and communication equipment used in mission-critical applications that require high system availability must be implemented with fault-tolerant architectures. Generally, these fault-tolerant power architectures require that the power supplies built into data-processing/communication equipment are capable of operating from two different AC power sources. In this paper, a number of dual AC-input power system architectures are proposed and evaluated on a relative basis with respect to power density and cost.