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This paper addresses the reliability and availability of uninterruptable power supply systems (UPS) used in modern datacenters and telecom core infrastructure. As 380V DC power distribution systems are gaining wider acceptance, it is expected that they meet high standards imposed by the industry in terms of reliability and availability. In this paper, reliability and availability of AC UPS topologies...
This paper presents a reconfigurable solar photovoltaic (PV) battery charger. A traditional PV charger either utilizes a DC/DC converter between the PV array and load, or it connects the battery directly to the PV array without any power conversion. Different from these approaches, our proposed PV charger avoids conventional DC/DC converters by using a reconfigurable switch matrix. This switch matrix...
This paper describes an algorithm for managing a system consisting of “dissimilar” battery packs in parallel without multiple DC/DC converters interfacing each battery pack to the load. The power loss from the circulating current can be avoided so that the operating time of the parallel battery system is prolonged. The proposed algorithm is able to recognize the load demand and determine the number...
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