PUBLICATIONS
Paper
[Domestic Journals] Seok-Min Kim, June-Seok Lee, and Kyo-Beum Lee, "A Novel Modulation Strategy Based on Level-Shifted 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.
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- 날짜 2019-06-26 15:09
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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.
