Emulated Inertia Control of Grid-connected Inverter-based Power Supply Sources for Mass Integration of Renewable Energy Resources

• Published in: IEEJ JOURNAL OF INDUSTRY APPLICATIONS Vol. 12; no. 3; pp. 368 - 375
• Main Authors: Miyazaki, Teru, Miyazaki, Satoshi, Harada, Atsushi, Matsuura, Takahiro, Takano, Sachio, Uemura, Hirofumi, Hamada, Hiromu
• Format: Journal Article
• Language: English
• Published: The Institute of Electrical Engineers of Japan 01.05.2023
• Subjects: emulated inertia control; grid-following inverter; grid-forming inverter; renewable energy; synthetic inertia; virtual inertia
• ISSN: 2187-1094; 2187-1108; 2187-1108
• DOI: 10.1541/ieejjia.22007633

This study investigated the important elements of emulated inertia control for grid-connected inverter-based power supply sources and identified the issues to be addressed for its integration into the electric power transmission and distribution system. For the first time, we categorized the emulated inertial control algorithms into five types based on three different aspects. Five emulated inertia control algorithms were simulated in order to compare their effectiveness in suppressing frequency fluctuations. In addition, a representative emulated inertia control algorithm based on the voltage-controlled method and another based on the current-controlled method were distinguished. The two emulated inertia control algorithms were implemented and demonstrated using the experimental hardware of a 5[kVA] inverter-based power supply.