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This paper presents a high-voltage direct current (HVDC) transmission system using a 12-pulse thyristor inverter without AC grids' low-order harmonic distortions. Although it is effective to adopt a line-commutated converter (LCC) HVDC transmission system for connecting offshore wind farms, it generates unwanted harmonic distortions. We have proposed a novel harmonics elimination method using a three-winding...
A series of tetraalkylphosphonium amino acid salts was synthesized to determine the effect of ion structure, in particular the length of alkyl chains, on physico-chemical properties such as density, viscosity, glass transition temperature, and decomposition temperature. The resulting alkylphosphonium amino acid ionic liquids (AAILs) all had low density, from 0.886 to 0.945gcm −3 at 25°C. The...
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