Analysis of real-time energy losses of electric vehicle caused by non-stationary road irregularity

Jun-Cheng Wang, Fa-Hui Wang, Ya-Xiong Wang and Shi-An Chen

Energy, 2023, vol. 282, issue C

Abstract: To enhance the road mobility of EVs, this research performs the accurate modeling of non-stationary road irregularity and estimates the real-time power consumption of shock absorbers and the energy slip loss of the driving wheel. First, a modulated white noise method is proposed to generate non-stationary road irregularity with different frequency exponents. Then, the parameter setting problem of the standard white noise is solved. To describe the detrimental effect of time-domain non-stationary road irregularity on the time-varying vehicle speed, a simple and effective lookup table method is presented with the real-time running distance and the corresponding road elevation as input and output, respectively. Next, a half electric vehicle model is developed to describe the interaction between vertical-pitching vibration and longitudinal driving motion. The non-stationary road irregularity-induced power consumptions of both pairs of shock absorbers and the energy slip loss of the driving wheel are analyzed under different frequency exponents and time-varying vehicle speed. The results show that the power consumption of shock absorbers increases when the frequency exponent decreases and the vehicle speed increases. Under the high running speed and large acceleration driving condition, the mean of slip energy loss of the driving wheel is several times larger than the mean sum of the power consumption of shock absorbers.

Keywords: Electric vehicle; Road mobility; Non-stationary road irregularity-induced real-time energy losses; Modulated white noise and lookup table method; Longitudinal-vertical-pitching motion model (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223018388
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:282:y:2023:i:c:s0360544223018388

DOI: 10.1016/j.energy.2023.128444

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().