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A simplified control scheme for electric vehicle-power grid circuit with DC distribution and battery storage systems

Author

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  • Kabeya Musasa
  • Musole Innocent Muheme
  • Nnamdi Ikechi Nwulu
  • Mammo Muchie

Abstract

The direct current (DC) system is becoming the major trend for future internal power grid of electric vehicles (EVs). Since DC power grid system has a different nature to conventional alternating current (AC) grid system, appropriate design of the controller for EV-grid circuit is mandatory. In this paper, an EV employing a pure DC grid circuit with battery storage system (BSS) is considered as a study case. To enable a more efficient use of BSS, a flyback DC-DC converter for batteries charger/or discharger strategy is selected, which satisfies the power flows requirements. The dynamic and control performances of the combined system, i.e. ‘BSS-flyback DC-DC converter connected to a DC motor’, is investigated in terms of voltage/current signal fluctuations. The small-signal based control method is used, which limits the small-signal variations to about zero. To verify the effectiveness of the control strategy, several simulations are done using Matlab. The simulation results illustrate the performances obtained.

Suggested Citation

  • Kabeya Musasa & Musole Innocent Muheme & Nnamdi Ikechi Nwulu & Mammo Muchie, 2019. "A simplified control scheme for electric vehicle-power grid circuit with DC distribution and battery storage systems," African Journal of Science, Technology, Innovation and Development, Taylor & Francis Journals, vol. 11(3), pages 369-374, April.
    • Handle: RePEc:taf:rajsxx:v:11:y:2019:i:3:p:369-374
    DOI: 10.1080/20421338.2018.1527888
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