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Integrated single-phase PFC charger for electric vehicles

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Abstract

This paper discusses a converter structure appropriate for charging the batteries of an electric vehicle. The structure is obtained by a transformation of a conventional three-phase inverter, which is already present in an electric vehicle’s powertrain system. Since the motor inverter’s semiconductor components and the electric motor’s windings form the battery charger’s circuit, a reduction in the powertrain system’s size and weight is achievable. The proposed fully integrated battery charger can operate in buck and boost modes, while providing power-factor correction capability continuously. This paper also proposes an input current control strategy which ensures smooth operating mode transitions, which occur during the operation of the battery charger. The control is entirely implemented within a microcontroller and ensures operation with a high power factor and low total harmonic distortion of the input current. The performance of the discussed converter using the proposed control scheme was verified experimentally.

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Notes

  1. \(T_\mathrm{s} =100~\upmu \)s and represent the PWM switching period.

  2. Object parameters are: winding inductance \(L = 20\) mH, winding resistance \(R_L = 4~\Omega \) for current controller design and instead of battery the output capacitance \(C= 220~\upmu \)F and output resistance \(R_N \in (100,300~\Omega )\) were chosen in order to design the voltage controller.

  3. Texas Instruments’ microcontroller TMS320F28335.

  4. \(U_\mathrm{ref}=200\) V.

  5. \(R_N=300~\Omega ,~R_N=200~\Omega ~\text{ and }~ R_N=100~\Omega \), respectively.

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Authors and Affiliations

  1. University of Maribor, FERI, Smetanova 17, 2000, Maribor, Slovenia

    Mitja Truntič, Primož Šlibar, Miro Milanovič & Miran Rodič

  2. United Technologies Research Centre Ireland Ltd. (UTRC), 4th Floor, Penrose Business Centre, Penrose Wharf, Cork, Ireland

    Tine Konjedic

Authors
  1. Mitja Truntič
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  2. Tine Konjedic
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  3. Primož Šlibar
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  4. Miro Milanovič
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  5. Miran Rodič
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Correspondence to Mitja Truntič.

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Truntič, M., Konjedic, T., Šlibar, P. et al. Integrated single-phase PFC charger for electric vehicles. Electr Eng 100, 2421–2429 (2018). https://doi.org/10.1007/s00202-018-0714-8

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  • DOI: https://doi.org/10.1007/s00202-018-0714-8

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