TY - GEN
T1 - A Low Power Photo-Voltaic Battery Charger with Improved Reliability and Energy Recovery to Reduce Shading Effect
AU - Rastmanesh, Maziar
AU - El-Masry, Ezz
AU - El-Sankary, Kamal
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Micro-solar energy harvesting systems can operate efficiently at relatively high threshold luminance, and they exhibit 0% efficiency below threshold luminance or at strong shading. The objective of this paper is to introduce a new topology that improves the charge efficiency, functionality, sensitivity, and reliability of the Photo-Voltaic (PV) solar chargers during strong overcast while employing minimum hardware. The proposed topology responds to a wide range of solar irradiation and functions as an efficient charger with an improved battery charging current for slow charge topology at strong shading. It employs a boost converter with a second inductor and exploits the non-linearity of the PV characteristics of a solar cell to reduce power loss. To verify the proposed topology, a prototype, 1.4V/18mA charger, was built and successfully tested with 87.3% heavily sourced efficiency retained.
AB - Micro-solar energy harvesting systems can operate efficiently at relatively high threshold luminance, and they exhibit 0% efficiency below threshold luminance or at strong shading. The objective of this paper is to introduce a new topology that improves the charge efficiency, functionality, sensitivity, and reliability of the Photo-Voltaic (PV) solar chargers during strong overcast while employing minimum hardware. The proposed topology responds to a wide range of solar irradiation and functions as an efficient charger with an improved battery charging current for slow charge topology at strong shading. It employs a boost converter with a second inductor and exploits the non-linearity of the PV characteristics of a solar cell to reduce power loss. To verify the proposed topology, a prototype, 1.4V/18mA charger, was built and successfully tested with 87.3% heavily sourced efficiency retained.
UR - http://www.scopus.com/inward/record.url?scp=85128724798&partnerID=8YFLogxK
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U2 - 10.1109/TPEC54980.2022.9750762
DO - 10.1109/TPEC54980.2022.9750762
M3 - Conference contribution
AN - SCOPUS:85128724798
T3 - 2022 IEEE Texas Power and Energy Conference, TPEC 2022
BT - 2022 IEEE Texas Power and Energy Conference, TPEC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Texas Power and Energy Conference, TPEC 2022
Y2 - 28 February 2022 through 1 March 2022
ER -
