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Fundamental frequency sorting algorithm (FFSA) is outstanding for the MMC capacitor voltage balance due to the reduced computational burden and elimination of arm current detection. However, with the traditional carrier-phase-shifted pulse width modulation (CPS-PWM) scheme, FFSA will be ineffective when the carrier frequency is higher than 250 Hz, where the line frequency is 50 Hz. Thus, previous ...

Application Range Analysis and Implementation of the Logic-Processed CPS-PWM Scheme Based MMC Capacitor Voltage Balancing Strategy