Seok-Min Kim, “H-브릿지 멀티레벨 인버터의 셀 간 손실 분배를 고려한 허용 제어,” 아주대학교 공학석사 학위 논문, 2016. > Paper

This paper proposes a modulation technique for fault-tolerant cascaded H-bridge multileve linverters. The proposed modulation

scheme comprises two types of PWM strategy to cover both open-and short-device fault cases. The neutral shift is applied as

fault-tolerant control with the proposed modulation scheme. Finally, three-phase balanced line-to-line voltages and line currents

are produced under the internal faulty condition. In addition, a novel switching rotation scheme is proposed to improve power

distribution among the H-bridge inverter cells under the faulty conditions. Simulation and experimental results are included to

show the feasibility on the proposed fault-tolerant methods in the field.