In this paper, a new optimal pulsewidth modulation (PWM) scheme for a three-level quasi-switched boost T-type inverter (TL qSBT 2I) under normal and failure modes is proposed. The proposed method reveals its semiconductor fault tolerance capability in open-circuit fault condition situations as described in this paper. The PWM control algorithm for the fault-tolerant qSBT 2I is implemented by selecting appropriate values for the modulation index, shoot-through (ST) duty cycle, and duty cycles of two additional switches. The steady-state analysis and operating principles of the fault-tolerant qSBT 2I are presented. A laboratory prototype was built to verify the operating principles of the qSBT 2I with the proposed modulation scheme before and after fault conditions.
A PWM Scheme for a Fault-Tolerant Three-Level Quasi-Switched Boost T-Type Inverter
2020-09-01
Do , D-T , Nguyen , M-K , Quach , T-H , Tran , V-T , Blaabjerg , F & Vilathgamuwa , M 2020 , ' A PWM Scheme for a Fault-Tolerant Three-Level Quasi-Switched Boost T-Type Inverter ' , IEEE Journal of Emerging and Selected Topics in Power Electronics , vol. 8 , no. 3 , 8736357 , pp. 3029-3040 . https://doi.org/10.1109/JESTPE.2019.2922687
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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