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The growing installation of distributed generation (DG) units in low-voltage distribution systems has popularized the concept of nonlinear load harmonic current compensation using multifunctional DG interfacing converters. It is analyzed in this paper that the compensation of local load harmonic current using a single DG interfacing converter may cause the amplification of supply voltage harmonics...
Industrial modular multilevel converter (MMC) controllers usually implement the sub-module (SM) capacitor voltage balance control (VBC) in field-programmable gate array (FPGA) boards. Conventional VBC methods need to sort out the capacitor voltages, where the sorting algorithm would become too complex to be accommodated in FPGA if the SM number is large. A sorting-less VBC optimized for FPGA implementation...
In order to enhance the redundancy and reliability for distributed generation, a grid-tied photovoltaic (PV) generation system based on series-connected module integrated inverters (SC-MIIs) is proposed in this paper. In the proposed system, each MII is interfaced with a PV panel with independent maximum power point tracking (MPPT) to harvest maximum solar energy. The outputs of MIIs are at AC-line...
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