Design and performance evaluation of series hybrid electric vehicle using backward model

• Main Authors: Lalit B. Rana, Ashish Shrestha, Sudip Phuyal, Bijen Mali, Ojaswi Lakhey, Ramesh K. Maskey
• Format: Article
• Language: English
• Published: Wiley 2020-11-01
• Series: The Journal of Engineering
• Subjects: hybrid electric vehicles; battery powered vehicles; energy consumption; energy conservation; performance evaluation; series hybrid electric vehicle; backward model; environmental issues; power-split mode; highway drive cycles; series hev bus design; cruising strategies; transportation; acceleration strategies; soc limits; deceleration strategies; city drive cycles; energy-saving; battery state of charge; fuel consumption; rule-based algorithm; matlab environment; control strategies; fossil fuel resources depletion
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.1314

Hybrid electric vehicles (HEVs) are becoming a more promising means of transportation mainly because of environmental issues and depletion of fossil fuel resources. This study deals with the basic theoretical knowledge for describing their behaviour in acceleration, cruising, deceleration and control strategies. Preliminary design calculations for a series HEV bus are carried out in MATLAB environment using a backward model. In addition to this, the rule-based algorithm is implemented to compare fuel consumption, battery's state of charge (SOC) and energy-saving possibilities. The model is firstly tested for highway and city drive cycles for SOC limits of 0.6 and 0.7. Further, prolonged simulations are conducted for both the highway and city drive cycles for four different SOC limits and three parameters of the hybrid vehicle (SOC of battery, fuel power and average charging power) are observed and compared with each other. The performance indexes of both drive cycles are estimated and it is found that higher performance indexes are obtained using power-split mode and greater SOC lower limit as internal combustion engine is more efficient when operated in this mode.