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Modular Multilevel Converter (MMC) topology is an interesting solution for number of medium and high voltage applications. Key advantages over another multilevel topologies include flexibility of scaling in voltage and simple implementation of redundancy. In this publication control of DC-DC MMC is discussed. Analyzed converter consists of six branches connected in double wye structure. It enables...
This paper describes a new concept of a three phase switch dedicated for low voltage capacitor bank for reactive power compensation (RPC). The switch combines electromagnetic relay with a solid-state valve. In contrast to state-of-the-art solution where thyristors are used, the proposed device utilizes fully controllable IGBT transistors. IGBT gives possibility to turn-on the switch without inrush...
The paper presents the results of investigation of the realization of the maximum power point tracking (MPPT) method in a single-phase, single-stage, grid-connected photovoltaic (PV) system. The algorithm is based on the analysis of harmonic components occurring in the PV array power. The paper presents analytical discussion of a modified ripple-based MPPT technique, simulation results and verification...
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