Decoupled Internal Energy Regulation and Inertial Response Provision for Grid-Forming Multilevel-Converter-Based E-STATCOMs
A novel algorithm decouples energy management from frequency support, cutting unnecessary battery cycling by 50%.
Researchers Ki-Hyun Kim, Yeongung Kim, and Shenghui Cui developed a new control strategy for double-star multilevel-converter-based E-STATCOMs. The method separates internal energy regulation (handled via AC-side power) from inertial response provision (handled via DC-side storage). This decoupling prevents unnecessary battery cycling, extends storage lifespan, and allows flexible operation with or without storage. The scheme was validated through offline simulations and lab-scale experiments, offering more resilient grid support for renewable-heavy power systems.
Why It Matters
Enables more reliable and cost-effective grid stabilization as renewable energy adoption increases, reducing infrastructure wear.