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This paper proposes an operational improvement of MMC (Modular Multilevel Converter) with redundancy SMs (sub-modules) by a new scheme of NLC (Nearest Level Control), which can offer reduction of voltage harmonics and switching loss. The feasibility of proposed scheme was verified through computer simulations with PSCAD/EMTDC software. Based on simulation results, a hardware prototype of 10kVA, DC-1000V...
Due to depletion of fossil fuels and environmental problem, renewable energy has become one of the important energy resources. For the purpose of efficient power generation of the renewable energy sources, MPPT control is essential. But if the power conditioning system operates under stand-alone mode, MPPT control is unavailable for the parameter control of the local load. This paper proposes a maximum...
In this paper, a simple maximum power point tracking (MPPT) method for series-connected DC-DC converter module of photovoltaic power conditioning systems (PCS) is proposed. This approach enables maximum power point (MPP) tracking control with the converter's output voltage information instead of calculating solar array power, which significantly simplifies the sensor network by removing current sensor...
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