Corrigendum to "A Single-Stage Buck-Boost Three-Level Neutral-Point-Clamped Inverter with Two Input Sources for the Grid-Tied Photovoltaic Power Generation". (27th August 2019) - Ge, Xuefeng; Chen, Mengxing; Shi, Mingming; Zhou, Qi; Li, Juan; Huang, Di; Yuan, Xiaodong; Yuan, Yubo