A Fault Protection Method for Avoiding Overvoltage in Symmetrical Monopole HVDC Systems by Half-Bridge MMC. - Kenichiro Sano; Hiro Nakayama (IEEE Access, 2021)

Assessment of Harmonic Stability of Grid-connected Inverter and Harmonic Limits in IEC TS 61000-3-16. - Hiro Nakayama; Naotaka Okada (ISGT EUROPE, 2024)