2026-04-13T03:13:04Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3589532026-02-07T11:35:08Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Hamed, Moradmand Jazi author Mahmoud, Fekri author Milad, Keshani author Rahimzadeh Khorasani, Ramin author Ehsan, Adib author Wheeler, Patrick author Martínez García, Herminio author Velasco Quesada, Guillermo author 2021-10-04 Here, a soft switched three-level boost converter with high voltage gain is proposed which is suitable for high step-up applications with wide output power range. In this converter, a ZVT auxiliary circuit is used which provides soft switching in a wide range of output power independent of load variation. Utilizing coupled-inductors with one magnetic core removes extra auxiliary core in the soft switching circuit and provides high voltage gain in conjunction with size reduction. Also, the secondary and tertiary leakage inductances of the coupled-inductors minimize the reverse recovery problem of the output diodes. Due to its three-level structure, it has very low voltage stress over semiconductor elements in comparison to the existing interleaved structures, resulting in using MOSFETs with low on-resistance and thus lower conduction losses and cost. Operating modes as well as analytical analysis of the proposed converter are discussed. Finally, in order to validate the proposed converter performance, experimental results from a 200-W laboratory prototype are presented. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics Electronic instruments Electrònica - Aparells i instruments Soft-switching non-isolated high step-up three-level boost converter using single magnetic element