A Novel DTC Strategy on Flying Capacitor Drives with Improved Capacitor Balancing

TitleA Novel DTC Strategy on Flying Capacitor Drives with Improved Capacitor Balancing
Publication TypeConference Paper
Year of Publication2009
AuthorsArasteh, M, Rahmati A_reza, Farhangi S, Abrishamifar A
Conference NameProceedings of the 44th International Universities Power Engineering Conference
Date PublishedSeptember
Conference LocationUniversity of Strathclyde
KeywordsElectrical Machines and Drives Power Quality and Power Electronic Applications
Abstract

A novel DTC strategy on flying capacitor multilevel drives using all space vectors is proposed. With a 24-sector switching table, the torque ripple and rate of change of the applied voltages are reduced. To keep balance the capacitor voltages in a low switching frequency, an alternative algorithm selects the redundant vectors to cover all the required evolutions. DTC with Flying Capacitor Multilevel Inverter is simulated in MATLAB/SIMULINK and the proposed balancing method is verified. The Analysis and Simulation results in MATLAB/SIMULINK confirm the performance of the proposed strategy.