Actual Electricity Utility Factor of Plug-In Hybrid Electric Vehicles in Typical Chinese Cities Considering Charging Pattern Heterogeneity

Abstract

The actual energy saving effect of plug-in hybrid vehicles (PHEVs) is usually evaluated by the electricity utility factor (UF) in a standardized charging pattern. To further evaluate the impacts of the charging pattern heterogeneity of PHEV, actual vehicle travel data are adopted to classify the charging pattern in seven typical Chinese cities and derive its impacts on actual UF. Additionally, UF curves are fitted as power exponential functions. The result shows that during daily usage, UF can reach over 0.8 for 50 km all-electric-range PHEVs for the 77% frequently charging adopters, while it is as low as 0.1 for the 3% rarely charging adopters. Comprehensive UF values at an actual charging pattern are 0.53 and 0.68 for the 50 km and 80 km all-electric-range PHEVs, and the values are 0.03 and 0.04 smaller than the standard UF, respectively.

Study of a Hybrid Vehicle Powertrain Parameter Matching Design Based on the Combination of Orthogonal Test and Cruise Software

“…The extended-range electric vehicle (EREV), which is close to a pure electric vehicle [14], has been improved based on the traditional hybrid electric vehicle, which is a significant model of the plug-in hybrid electric vehicle (PHEV) [10]. At the same time, it increases the driving range of the car compared to that of traditional pure electric vehicles, reduces fuel consumption by about 5-20% compared to conventional fuel vehicles, reduces emissions by about 60% over the entire life cycle, and can reduce costs by about 20% [15][16][17], which has become a hot spot in the industry recently.…”