Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

An Experiment-Based Methodology for Evaluating the Impacts of Full Bandwidth Load on the Hybrid Energy Storage System for Electrified Vehicles

Version 1 : Received: 2 October 2018 / Approved: 10 October 2018 / Online: 1 November 2018 (00:00:00 CET)

A peer-reviewed article of this Preprint also exists.

Shahverdi, M.; Mazzola, M.; Doude, M.; Grice, Q.; Gafford, J.; Sockeel, N. An Experiment-Based Methodology for Evaluating the Impacts of Full Bandwidth Load on the Hybrid Energy Storage System for Electrified Vehicles. Sci 2019, 1, 26. Shahverdi, M.; Mazzola, M.; Doude, M.; Grice, Q.; Gafford, J.; Sockeel, N. An Experiment-Based Methodology for Evaluating the Impacts of Full Bandwidth Load on the Hybrid Energy Storage System for Electrified Vehicles. Sci 2019, 1, 26.

Journal reference: Sci 2019, 1, 26
DOI: 10.3390/sci1010026

Abstract

In Electrified Vehicles, the cost, efficiency, and durability of electrified vehicles are dependent on the energy storage system (ESS) components, configuration and its performance. This paper, pursuing a minimal size tactic, describes a methodology for quantitatively and qualitatively investigating the impacts of a full bandwidth load on the ESS in the HEV. However, the methodology can be extended to other electrified vehicles. The full bandwidth load, up to the operating frequency of the electric motor drive (20 kHz), is empirically measured which includes a frequency range beyond the usually covered frequency range by published standard drive cycles (up to 0.5 Hz). The higher frequency band is shown to be more efficiently covered by a Hybrid Energy Storage System (HESS) which in this paper is defined as combination of a high energy density battery, an Ultra-Capacitor (UC), an electrolytic capacitor, and a film capacitor. In this paper, the harmonic and dc currents and voltages are measured through two precision methods and then the results are used to discuss about overall HEV efficiency and durability. More importantly, the impact of the addition of high-band energy storage devices in reduction of power loss during transient events is disclosed through precision measurement based methodology.

Subject Areas

hybrid energy storage; energy efficiency; frequency domain analysis; hybrid electric vehicles

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