Fast photovoltaic array reconfiguration for partial solar powered vehicles

Jaemin Kim, Yanzhi Wang, Massoud Pedram, Naehyuck Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

Abstract

This paper demonstrates that a partially solar powered EV can significantly save battery energy during cruising using innovative fast photovoltaic array (PV) reconfiguration. Use of all the vehicle surface areas, such as the hood, rooftop, door panels, quarter panels, etc., makes it possible to install more PV modules, but it also results in severe performance degradation due to inherent partial shading. This paper introduces fast online PV array reconfiguration and customization of the PV array installation according to the driving pattern and overcomes the partial shading phenomenon. We implement a high-speed, high-voltage PV reconfiguration switch network with IGBTs (insulated-gate bipolar transistors) and a controller. We derive the optimal reconfiguration period based on the solar irradiance/driving profiles using adaptive learning method, where the on/off delay of IGBT, CAN (control area network) delay, computation overhead, and energy overhead are taken into account. Experimental results show 25% more power generation from the PV array. This paper also introduces two important design-time optimization problems to achieve trade-off between performance and overhead. We derive the optimal PV reconfiguration granularity and partial PV array mounting by the car owner's driving pattern, which results in more than 20% PV cell cost reduction.

Original languageEnglish (US)
Title of host publicationProceedings of the International Symposium on Low Power Electronics and Design
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages357-362
Number of pages6
Volume2015-October
ISBN (Print)9781450329750
DOIs
StatePublished - Oct 13 2015
Externally publishedYes
EventACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED 2014 - La Jolla, United States
Duration: Aug 11 2014Aug 13 2014

Other

OtherACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED 2014
CountryUnited States
CityLa Jolla
Period8/11/148/13/14

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Keywords

  • Arrays
  • Insulated gate bipolar transistors
  • Microprocessors
  • Power generation
  • Switches
  • Vehicles

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kim, J., Wang, Y., Pedram, M., & Chang, N. (2015). Fast photovoltaic array reconfiguration for partial solar powered vehicles. In Proceedings of the International Symposium on Low Power Electronics and Design (Vol. 2015-October, pp. 357-362). [7298283] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1145/2627369.2627623