Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Neutral-Point Voltage Balancing Control Scheme for Fault-Tolerant Operation of 3-Level ANPC Inverter
Authors Jae-Woon Lee ; Ji-Won Kim ; Byoung-Gun Park ; Eui-Cheol Nho
Page pp.120-126
ISSN 1229-2214
Keywords Fault-tolerant ; ANPC ; Voltage balancing ; Multi-level inverter ; Reliability
Abstract This study proposes a neutral voltage balance control scheme for stable fault-tolerant operation of an active neutral point clamped (ANPC) inverter using carrier-based pulse width modulation. The proposed scheme maintains the neutral voltage balance by reconfiguring the switching combination and modulating the reference output voltage in order to solve the degradation of the output characteristic in the fault tolerant operation due to the fault of the power semiconductor switch constituting the ANPC inverter. The feasibility of the proposed control scheme is confirmed by HIL experiment using RT-BOX.