An Active Modulation Scheme for Avoiding Overcharging in the Dual Converter with Isolated Asymmetric Supplies

This paper presents an enhanced modulation technique for dual converters with isolated supplies. This unified modulation technique is applicable for any positive voltage ratio between the isolated supplies. The modulation technique enhances the quality of converter output voltage compared to using previously reported methods. The effectiveness of the proposed technique is validated and results are presented for an open-end winding induction motor to demonstrate the advantages.