Oscillation Recognition Using a Geometric Feature Extraction Process Based on Periodic Time-Series Approximation. - Hwanhee Cho; Namki Choi; Byongjun Lee (IEEE Access, 2020)

Extended Geometric Feature Extraction Process for Detecting Multiple Frequency Oscillations in KEPCO System. - Hwanhee Cho; Namki Choi; Suchul Nam; Byongjun Lee (IEEE Access, 2021)

Three-Phase Diode-Clamped Four-Level PWM Inverter With Offset Voltage Injection. - Min-Sup Song; Jaewon Kim; Hwanhee Cho (IEEE Access, 2024)

Hybrid PI and Fuzzy Logic Control for Energy Optimization in Train Operations. - Hwanhee Cho; Jae-Won Kim; Min-Sup Song; Chi-Myeong Yun; Gyu-Jung Cho; Zhongbei Tian (IEEE Access, 2025)