https://scholars.lib.ntu.edu.tw/handle/123456789/632435
標題: | System Control and Reset Algorithm for Differential Power Processing Converters in a Photovoltaic Microinverter | 作者: | Lo C.J KATHERINE ANN KIM |
公開日期: | 2021 | 來源出版物: | 2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics, COMPEL 2021 | 摘要: | PV-to-bus differential power processing (DPP) system can be utilized to achieve maximum power point (MPP) production for mismatched series-connected photovoltaic (PV) submodules and is examined for use in a microinverter. Series-connected PV systems can experience sudden ambient condition changes, decreasing PV power tracking efficiencies. Existing system control algorithms for bidirectional PV-to-bus converters in segmented DPP systems can achieve individual MPP tracking, but are slow to converge and cannot quickly respond to sudden changes. A reset algorithm based on PV submodule voltage sensing and PV MPP estimation is implemented for rapid PV power recovery to the proximity of the new MPP after conditions have changed and for fast convergence to the MPP during system startup. The proposed reset algorithm is tested in simulation and two different types of converter control methods are also compared. Simulation showed that MPP production was established within 0.98 seconds after system startup and PV power recovered approximately 2.6 seconds after a new set of mismatched irradiance conditions were imposed. High MPP tracking efficiency is observed in all mismatched irradiance conditions, with values up to 98.9%. © 2021 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124206838&doi=10.1109%2fCOMPEL52922.2021.9646000&partnerID=40&md5=2a6d9dcc4f0032ac67982408c731f5fc https://scholars.lib.ntu.edu.tw/handle/123456789/632435 |
DOI: | 10.1109/COMPEL52922.2021.9646000 | SDG/關鍵字: | Condition; Differential power; Maximum power point; Micro inverters; Photovoltaic power; Photovoltaics; Power processing; Processing systems; Series-connected; System control; Power converters |
顯示於: | 電機工程學系 |
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