Modulation method to reduce DC-bus harmonics current in two-motor drive system

This study proposes a modulation method to reduce high-frequency components in the DC-bus current for a two-motor drive system. The proposed method reduces the current flowing through the DC bus capacitor by adjusting the input current ripple of each inverter. An effectiveness of the proposed method is confirmed through experiments using actual equipment by reducing the RMS value of the capacitor current by 43.6 %.