We develop a unit commitment and economic dispatch model to estimate the operation costs and the air emissions externality costs attributable to new electric vehicle electricity demand under controlled vs uncontrolled charging schemes. We focus our analysis on the PJM Interconnection and use scenarios that characterize (1) the most recent power plant fleet for which sufficient data are availabl...

Low-voltage ride-through (LVRT) and grid support capability are becoming a necessity for grid-tied renewable energy sources to guarantee utility availability, quality reliability. In this paper, swap control scheme is proposed permanent magnet synchronous generator (PMSG) MW-level wind turbines. This shifts system operation from maximum power point tracking (MPPT) mode LVRT mode, during voltage...

The European Space Agency (ESA) is developing a direct detection Doppler wind Lidar for the measuring of wind from space. The pulsed UV Lidar, with high spectral resolution capability, shall deliver horizontally projected single line-of-sight wind measurements at 24 vertical layers from each of its two channels; one molecular (clear air) and one particle (aerosol and cloud backscatter) channel....

Many features of the general circulation of the atmosphere shift upward in response to warming in simulations of climate change with both general circulation models (GCMs) and cloud-system-resolving models. The importance of the upward shift is well known, but its physical basis and the extent to which it occurs coherently across variables are not well understood. A transformation is derived he...

As wind turbines get larger, worries have emerged that the turbine noise would move down in frequency and that the low-frequency noise would cause annoyance for the neighbors. The noise emission from 48 wind turbines with nominal electric power up to 3.6 MW is analyzed and discussed. The relative amount of low-frequency noise is higher for large turbines (2.3-3.6 MW) than for small turbines (≤ ...

The global energy mix is shifting from fossil fuels to combinations of multiple storage and generation types. Hybrid system advancements provide opportunities for developing deploying innovative green technology solutions that can further reduce emissions achieve net-zero by 2050. This study examined the impact an increasing share wind solar electricity production on reducing carbon intensity c...

We present a model for the structure, temporal behavior, and evolutionary status of the bipolar nebula M2−9. According to this model the system consists of an AGB or post-AGB star and a hot white dwarf companion, with an orbital period of about 120 years. The white dwarf has undergone a symbiotic nova eruption about 1200 years ago, followed by a supersoft x-ray source phase. The positional shif...

Impacts of convective momentum transport (CMT) on tropical Pacific climate are examined, using an atmospheric (AGCM) and coupled GCM (CGCM) from Seoul National University. The CMT scheme affects the surface mainly via a convection-compensating atmospheric subsidence which conveys momentum downward through most of the troposphere. AGCM simulations—with SSTs prescribed from climatological and El ...