Research Article

Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles

Volume: 10 Number: 2 June 23, 2026

Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles

Abstract

This study presents the systematic design, multi-surface integration, and experimental validation of a Vehicle-Integrated Photovoltaic (VIPV) system tailored for an electric urban delivery motorcycle. To maximize power density within highly constrained vehicular surface areas, a high-density shingled cell architecture was developed to elevate string voltage and optimize conversion efficiency. Ethylene Tetrafluoroethylene (ETFE) was used as a lightweight front-sheet material, providing more stable efficiency yields compared to standard Polyethylene Terephthalate (PET)-coated alternatives under fluctuating environmental conditions. To mitigate severe mismatch losses caused by the multi-oriented geometry of the courier delivery box, a multi-channel Maximum Power Point Tracking (MPPT) architecture was commissioned to independently manage heterogeneous irradiance profiles. Real-world outdoor testing conducted in Ankara, Türkiye, over a cumulative active test duration of 40,980 seconds (~11.4 hours), demonstrated a cumulative energy harvest of 364.9 Wh. This solar gain successfully yielded a 20.3% increase in the battery State-of-Charge (SoC) and provided an additional grid-independent driving range of approximately 14.2 km. Despite efficiency fluctuations induced by dynamic urban shading, the integration of flexible shingled PV panels with a tailored power electronics topology represents a promising approach to enhance the sustainability and range autonomy of lightweight electric mobility.

Keywords

Thanks

The authors would like to express their sincere gratitude to the Middle East Technical University (METU) – Center for Solar Energy Research and Applications (GÜNAM) for their expertise in photovoltaic characterization and for providing high-precision measurement infrastructure. The authors also gratefully acknowledge the support of Kocaeli University AYARGEM Center.

References

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Details

Primary Language

English

Subjects

Hybrid and Electric Vehicles and Powertrains

Journal Section

Research Article

Publication Date

June 23, 2026

Submission Date

March 28, 2026

Acceptance Date

June 16, 2026

Published in Issue

Year 2026 Volume: 10 Number: 2

APA
Aksoy, A. H., Özsezen, A. N., & Özden, T. (2026). Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles. International Journal of Automotive Science And Technology, 10(2), 427-436. https://doi.org/10.30939/ijastech..1917959
AMA
1.Aksoy AH, Özsezen AN, Özden T. Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles. IJASTECH. 2026;10(2):427-436. doi:10.30939/ijastech.1917959
Chicago
Aksoy, Ahmet Hamdi, Ahmet Necati Özsezen, and Talat Özden. 2026. “Evaluation of a VIPV-Based Solar-Assisted Charging System With Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles”. International Journal of Automotive Science And Technology 10 (2): 427-36. https://doi.org/10.30939/ijastech. 1917959.
EndNote
Aksoy AH, Özsezen AN, Özden T (June 1, 2026) Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles. International Journal of Automotive Science And Technology 10 2 427–436.
IEEE
[1]A. H. Aksoy, A. N. Özsezen, and T. Özden, “Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles”, IJASTECH, vol. 10, no. 2, pp. 427–436, June 2026, doi: 10.30939/ijastech..1917959.
ISNAD
Aksoy, Ahmet Hamdi - Özsezen, Ahmet Necati - Özden, Talat. “Evaluation of a VIPV-Based Solar-Assisted Charging System With Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles”. International Journal of Automotive Science And Technology 10/2 (June 1, 2026): 427-436. https://doi.org/10.30939/ijastech. 1917959.
JAMA
1.Aksoy AH, Özsezen AN, Özden T. Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles. IJASTECH. 2026;10:427–436.
MLA
Aksoy, Ahmet Hamdi, et al. “Evaluation of a VIPV-Based Solar-Assisted Charging System With Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles”. International Journal of Automotive Science And Technology, vol. 10, no. 2, June 2026, pp. 427-36, doi:10.30939/ijastech. 1917959.
Vancouver
1.Ahmet Hamdi Aksoy, Ahmet Necati Özsezen, Talat Özden. Evaluation of a VIPV-Based Solar-Assisted Charging System with Multi-MPPT Control and Shingled PV Panels for Electric Urban Delivery Motorcycles. IJASTECH. 2026 Jun. 1;10(2):427-36. doi:10.30939/ijastech. 1917959


International Journal of Automotive Science and Technology (IJASTECH) is published by Society of Automotive Engineers Turkey

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