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This article presents the analysis of a single-phase Back-to-Back converter with a generalized parallel structure, in order to manage bidirectional active power flow between two AC systems. The considered topology is formed by single-phase cells coupled magnetically through a power transformer. The main strategy to operate the converter is to distribute the active power flow symmetrically between...
An approach for three-phase AC to DC conversion is proposed, which consists of a single-stage while offering galvanic isolation, soft-switching, bi-directional power flow and a significant reduction of inductive and capacitive energy storage. Two elements enable this approach, namely a neutral voltage-lift capacitor and a Quad Active Bridge (QAB) converter. Moreover, a control strategy is described...
When considering issues such as power shortage, environmental pollution, and dependence on petroleum, a battery energy storage system (ESS) is one of the promising options to overcome these problems. This paper deals with a 3 kW residential battery ESS that consists of a buck/boost power conversion unit, a DC/AC bidirectional conversion unit, and a Li-ion battery pack with a battery management system...
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