By Deepak Ramasubramanian, Pouyan Pourbeik, Evangelos Farantatos, and Anish Gaikwad Simulation of 100% Inverter-Based Resource Grids With Positive Sequence Modeling HANDS ©SHUTTERSTOCK/POPTIKA. BATTERY ICON ©SHUTTERSTOCK/POCKYGALLERY Digital Object Identifier 10.1109/MELE.2021.3070938 Date of current version: 8 June 2021 62 IEEE Electrification Magazine / JUNE 2021 2325-5897/21©2021IEEE