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Single stage converter system (SSCS) does both dc-dc conversion and dc-ac conversion in one stage. In this paper, a SSCS for photovoltaic (PV) applications is presented. This system can deliver active power from PV to the grid while continuously tracking maximum power point (MPP). The proposed system is controlled such that it can deliver/receive reactive power from grid. The presented system has...
This paper gives an overview about droop based power sharing issues of parallel connected dc-dc converters in low voltage dc microgrid. Droop control is the popular technique for power sharing in dc microgrid. The main drawbacks of the conventional droop methods are, poor current sharing and drop in dc grid voltage due to large droop gain. In this paper, a modified figure of merit called proportional...
In this paper, a generalized mathematical model for buck, boost and buck-boost converters is derived. An average power balance control (APBC) scheme is proposed and analyzed for these converters. The proposed scheme consists of two control loops, the fast inner current loop uses sliding mode control (SMC) and outer voltage loop uses the average power balance algorithm (APBA). The existence condition...
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