A brief review on hardware structure of AC electric spring

<span lang="EN-US">Decarbonizing power generation and reducing greenhouse gas emissions require renewable energy sources. Intermittent nature of sources can cause blackouts, fluctuation in voltage, grid-connected inverter usage, inability to predict generation, fluctuations voltage frequency. It is possible balance between the supply demand overcome these problems by using an electric spring (ES). necessary study its work, types, controlling actions for realizing benefits spring. This paper reviews hardware structure ES based on voltage-source (VSI) current-source (CSI) topologies, single-phase three-phase AC distribution systems with The structure, control strategies, operating modes, advantages disadvantages each topology are elaborated make it a suitable alternative resolving different quality issues caused due high penetration sources.</span>