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Linear control of wireless charging for electric bicycles

Author

Listed:
  • Joseph, Peter K.
  • Elangovan, D.
  • Arunkumar, G.

Abstract

The transportation field is witnessing a plethora of changes in vehicle electrification sector. One of the revolutionary technologies emerging in this filed is wireless power transmission. Despite various advantages like universal nature, non-physical contact and ease of access, wireless power transmission faces some limitations like flux leakage, non-linear transmitter-receiver relation, etc. This non-linear behavior of wireless power transformer causes a dynamic input-output relation throughout the operation. This leads to the use of multiple sensors which would increase the closed-loop response time. These additional sensing elements and gain determining process will reduce the power transfer efficiency in light power electric vehicles like electric bicycles. To mitigate these non-linear effects of wireless power transmission, a customized linear region is identified and implemented in this work. In this identified region of the transformer, the input-output relation will be linear, which will prevent the use of additional sensing elements. A 250 W electric bicycle is used for this study of linear control of the wireless charger. The overall efficiency of 93% is achieved for a coupling separation of 200 mm even when the primary and secondary coils have much higher misalignments. The linear closed-loop region is designed and represented with analytical equations, and the transformer efficiency obtained through these equations have been validated with the hardware outputs as well as with commercial simulations.

Suggested Citation

  • Joseph, Peter K. & Elangovan, D. & Arunkumar, G., 2019. "Linear control of wireless charging for electric bicycles," Applied Energy, Elsevier, vol. 255(C).
    • Handle: RePEc:eee:appene:v:255:y:2019:i:c:s0306261919315855
    DOI: 10.1016/j.apenergy.2019.113898
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    Citations

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    Cited by:

    1. Emin Yildiriz & Murat Bayraktar, 2022. "Design and Implementation of a Wireless Charging System Connected to the AC Grid for an E-Bike," Energies, MDPI, vol. 15(12), pages 1-15, June.
    2. Frechter, Yotam & Kuperman, Alon, 2020. "Analysis and design of inductive wireless power transfer link for feedback-less power delivery to enclosed compartment," Applied Energy, Elsevier, vol. 278(C).
    3. Gautham Ram Chandra Mouli & Peter Van Duijsen & Francesca Grazian & Ajay Jamodkar & Pavol Bauer & Olindo Isabella, 2020. "Sustainable E-Bike Charging Station That Enables AC, DC and Wireless Charging from Solar Energy," Energies, MDPI, vol. 13(14), pages 1-21, July.
    4. Ahmed A. S. Mohamed & Ahmed A. Shaier & Hamid Metwally & Sameh I. Selem, 2022. "An Overview of Dynamic Inductive Charging for Electric Vehicles," Energies, MDPI, vol. 15(15), pages 1-59, August.
    5. Xu Yang & Junfeng Yang & Jing Fan & Bao Wang & Dingzhen Li, 2023. "A Position-Insensitive Nonlinear Inductive Power Transfer System Employing Saturable Inductor," Energies, MDPI, vol. 16(5), pages 1-16, March.

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