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In this paper, a study on single-phase delta UPS topological alternatives is proposed for low power and low cost applications. The proposed topology has a DC-DC converter connected between the shunt inverter and the battery bank/series converter DC terminals. This modification will allow the downsizing of the DC battery bank as well as the removing of the series converter transformer. Two different...
This work presents several harmonic analyses using the four-wire three-phase harmonic current injection method (FHCIM) to simulate the power distribution neutral-to-earth voltage (NEV) Test Case. FHCIM is a fast and reliable Newton-Raphson multi-frequency power flow methodology to simulate unbalanced three-phase electric power systems with explicit representation of the network characteristics and...
This paper proposes a new modeling of monopolar HVDC (High Voltage Direct Current) link for harmonic load flow analysis in electrical power systems with explicit representation of the DC and AC networks, as well as the converters non-linear characteristics and their harmonic interdependences, ensuring an accurate solution using current injection equations in frequency domain. This new methodology...
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