Sushil Silwal

• PhD
• PostDoc Position at University of California, San Diego

Electric vehicle (EV) penetration has been increasing in the modern electricity grid and has been complemented by the growth of EV charging infrastructure. This paper addresses the gap in the literature on the EV effects of total electricity costs in commercial buildings by incorporating V0G, V1G, and V2B charging. The electricity costs are minimiz...

This article presents a new current controller in the synchronous reference frame and its associated design for enhancing the performance of three-phase grid-connected inverters, especially against weak-grid conditions. The existing controllers do not perform strongly during high-impedance grid conditions and lead to oscillations and instability is...

Battery Energy Storage Systems (BESS) are often used for demand charge reduction through monthly peak shaving. The effect of two temporal resolutions, 15~min and 1 hour, on peak load reduction is compared across a battery ratings space defined by power capacity and energy capacity. A linear program of the system optimizes the peak of the net load a...

The University of California, San Diego, has responded to the growth of Electric Vehicle (EV) ownership by continually adding charging stations all around campus over the past five years. In March 2020, the coronavirus pandemic caused a massive decline in EV charging as shelter-in-place orders were issued and the campus closed except for the medica...

Open-source, high resolution power consumption data are scarce. We compiled, quality controlled, and released publicly a comprehensive power dataset of parts of the University of California, San Diego microgrid. The advanced microgrid contains several distributed energy resources (DERs), such as solar power plants, electric vehicles, buildings, a c...

Many distributed energy resource (DER) systems are remotely located and are often interfaced at low or medium voltage levels through power electronics converters such as voltage-sourced converters (VSC). Therefore, a weak-grid situation is encountered where the voltage and frequency at the point of DER coupling can experience fluctuations. A power...

This paper presents an enhanced current controller for improving the performance of a class of single-phase gridconnected inverters operating in weak and distorted grid conditions. An inverter designed to operate at normal (strong or stiff and clean) grid conditions may not perform satisfactorily during weak and distorted grid conditions. One major...

This letter analyzes the responses of a class of grid connected solar photovoltaic (PV) inverters to grid transients. It is observed that during most of the sudden grid transients, the PV inverter momentarily responds in a way that is opposite to the inertial response of existing synchronous generators. Although the size of these power responses is...