Bendyk, MaciejLuk, Patrick Chi-Kwong2017-07-072017-07-072017-02-16Maciej Bendyk, Patrick Chi-Kwong Luk, Control strategy for a modified cascade multilevel inverter with dual DC source for enhanced drivetrain operation, 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016, Milwaukee, United States, 18 - 22 September 2016, paper number 78549719781509007370http://dx.doi.org/10.1109/ECCE.2016.7854971http://dspace.lib.cranfield.ac.uk/handle/1826/12171This paper presents a new control strategy for a modified cascade multilevel inverter used in drivetrain operations. The proposed inverter is a three-phase bridge with its dc link fed by a dc source (battery), and each phase series-connected respectively to an H-bridge fed with a floating dc source (ultracapacitor). To exploit the potentials of the inverter for enhanced drivetrain performance, a sophisticated yet efficient modulation method is proposed to optimise energy transfer between the dc sources and with the load (induction motor) during typical operations, and to minimise switching losses and harmonics distortion. Detailed analysis of the proposed control method is presented, which is supported by experimental verifications.en©2017 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.Multilevel inverterdual energy sourceswitching strategydrivetrainConference paper