Ye-Ji Kim, Seok-Min Kim, and Kyo-Beum Lee, "A Switching Method for Improving Lifetime of DC-Link Capacitors in Hybrid ANPC Inverters," in Proc. SCEMS Conf., Nov. 2019. > Paper

This paper presents a switching strategy for improving lifetime of DC-link capacitors in photovoltaic (PV) hybrid active neutral-point-

clamped (ANPC) inverters. The DC-link capacitor current ripples should be reduced, because the high current ripples of the capacitors

cause high thermal stress and short lifetime of the capacitors. To reduce the DC-link current ripples, the switching sequence of the

conventional space vector pulse width modulation (SVPWM) method is replaced with the proposed switching sequence. By applying

the proposed method, the DC-link current ripples are reduced substantially. The effectiveness of the proposed method was verified

by simulation results.