Abstract:
This paper presents a novel soft-switching galvanically isolated buck-boost dc-dc converter as a module-integrated converter for photovoltaic (PV) applications. It featur...Show MoreMetadata
Abstract:
This paper presents a novel soft-switching galvanically isolated buck-boost dc-dc converter as a module-integrated converter for photovoltaic (PV) applications. It features three major operating modes: boost, normal, and buck mode. Their proper distribution over the input voltage range enables wide voltage regulation capabilities, i.e., close to those of nonisolated power optimizers. The proposed control algorithm requires only one buck-boost switching stage that performs voltage regulation by means of the switching stage reconfiguration with smooth transition between the modes. The design guidelines and the digital control system for PV applications are provided. The module-integrated converter was verified experimentally with a solar array simulator. The converter showed good maximum power point tracking performance and a peak efficiency of nearly 97%.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 64, Issue: 7, July 2017)
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