Jin-Hyuk Park, June-Seok Lee, Myung Yong Kim, and Kyo-Beum Lee, "Diagnosis and Tolerant Control Methods for an Open-Switch Fault in Vienna Rectifier," IEEE Journal of Emerging and Selected Topics in Power Electronics, in press. -SCIE > Paper

This paper proposes the fault diagnosis and tolerant control methods for the open-switch fault in Vienna rectifier. The proposed diagnosis method

uses only the input currents to detect the open-switch fault without any additional hardware. In the proposed tolerant control, the offset voltage to

restore the input currents is used when the open-switch fault occurs in Vienna rectifier. In addition, the proposed tolerant control considers the

balance of the neutral-point voltage. This method can improve the total harmonic distortion of the current and mitigates the dc-link voltage ripple. 

The effectiveness of the proposed open-switch fault diagnosis and tolerant control method is verified by the simulation and the experiment results.