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Energies 2018, 11(2), 348; https://doi.org/10.3390/en11020348

Study of the Energy Conversion Process in the Electro-Hydrostatic Drive of a Vehicle

Faculty of Automotive and Construction Machinery Engineering, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, Poland
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Received: 9 December 2017 / Revised: 23 January 2018 / Accepted: 30 January 2018 / Published: 2 February 2018
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
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Abstract

In the paper, we describe a study of an electro-hydrostatic hybrid drive of a utility van intended for city traffic. In this hybrid drive, the electric drive is periodically accompanied by hydrostatic drive, especially during acceleration and regenerative braking of the vehicle. We present a mathematical model of the hybrid drive as a set of dynamics and regulation equations of the van traveling at a given speed. On this basis, we construct a computer program which we use to simulate the processes of energy conversion in the electro-hydrostatic drive. The main goal of the numerical simulation is to assess the possibility of reducing energy intensity of the electric drive through such a support of the hydrostatic drive. The obtained results indicate that it is possible to reduce the load on elements of the electric system and, therefore, improve energy conversion. View Full-Text
Keywords: hybrid drive; electric drive; hydrostatic drive; energy consumption; energy efficiency; regenerative braking; city traffic; numerical simulations hybrid drive; electric drive; hydrostatic drive; energy consumption; energy efficiency; regenerative braking; city traffic; numerical simulations
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Grzesikiewicz, W.; Knap, L.; Makowski, M.; Pokorski, J. Study of the Energy Conversion Process in the Electro-Hydrostatic Drive of a Vehicle. Energies 2018, 11, 348.

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