23 citations
4 papers
Data-driven Control of an LCC HVDC System for Real-time Frequency Regulation
Young-Jin Kim
Recent advances in data sensing and processing technologies enable data-driven control of high-voltage direct-current (HVDC) systems for improving the operational stability of inte…
Optimal Voltage and Current Control of an HVDC System to Improve Real-Time Frequency Regulation
Do-Hoon Kwon, Youngjin Kim
High-voltage direct-current (HVDC) systems for constant or intermittent power delivery have recently been developed further to support grid frequency regulation (GFR). This paper p…
Hybrid-functional and quasi-particle calculations of band structures of Mg2Si, Mg2Ge, and Mg2Sn
Byungki Ryu, Sungjin Park, Eun-Ae Choi +4
We perform hybrid functional and quasi-particle band structure calculations with spin-orbit interaction to investigate the band structures of Mg2Si, Mg2Ge, and Mg2Sn. For all Mg2X…
Defects responsible for abnormal n-type conductivity in Ag-excess doped PbTe thermoelectrics
Byungki Ryu, Min-Wook Oh, Jae Ki Lee +6
We find that Ag-interstitial () acts as an electron donor and plays an important role in Ag-excess doped polycrystalline PbTe thermoelectric materials. When Ag is heavily dop…