Publication
Seok-Min Kim, June-Seok Lee, and Kyo-Beum Lee, "A Novel Modulation Strategy Based on LevelShifted PWM for Fault Tolerant Control of Cascaded Multilevel Inverters," The Transactions of the Korean Institute of Electrical Engineers, vol. 64, no. 5, pp. 718-725, May. 2015.
2015
PEEMS
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Jul. 22, 2023
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1. Authors: Seok-Min Kim, June-Seok Lee, and Kyo-Beum Lee
2. Title: A Novel Modulation Strategy Based on LevelShifted PWM for Fault Tolerant Control of Cascaded Multilevel Inverters
3. Journal: The Transactions of the Korean Institute of Electrical Engineers
4. Vol/no/pp: vol. 64, no. 5, pp. 718-725
5. Date: May. 2015
6. Abstract
: This paper proposes a novel level-shifted PWM (LS-PWM) strategy for fault tolerant cascaded multilevel inverter. Most proposed fault-tolerant operation methods in many of studies are based on a phase-shifted PWM (PS-PWM) method. To apply these methods to multilevel inverter systems using LS-PWM, two additional steps will be implemented. During the occurrence of a single-inverter-cell fault, the carrier bands scheme is reconfigured and modulation levels of inverter cells are reassigned in this proposed fault-tolerant operation. The proposed strategy performs balanced three-phase line-to-line voltages and line currents when a switching device fault occurs in a cascaded multilevel inverter using LS-PWM. Simulation and experimental results are included in the paper to verify the proposed method.
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