Abstract
Electric vehicles (EVs) include battery electric vehicles (BEVs), fuel-cell vehicles (FCVs) and fuel-cell hybrid electric vehicles (FCHEVs). The performance of vehicles is usually evaluated using standardized driving cycle tests; however, the results from standardized driving cycle tests deviate from the real-world driving cycle. In order to test the adaptability of EVs to real-world driving cycles, conditions of three typical routes in Tianjin are collected and their characteristics analyzed; then BEV and FCV models are created based on a type of FCHEV to simulate 0–100 km/h acceleration and cruising performance under a real-world driving cycle; finally, a motor bench is used to test the performance of FCHEV under the NEDC (New European Driving Cycle). After the adaptability of the three models to real-world driving cycle is compared based on the simulation and test results, it is found that FCHEV can recycle braking energy and has quick dynamic response, which can be well adapted to the real-world driving cycle.
Highlights
China has become one of the largest energy consumers and importers in the world [1].While continuous environmental pollution and the energy security crisis have attracted increasing public attention, vehicle exhaust emissions have ranked to be a major source of air pollution in some cities in China because transportation is responsible for about 1/3 of greenhouse gas emissions [2].The proportion is same in EU (European Union), US and other regions in the world [3]
New-energy vehicles represented by battery electric vehicles (BEVs) and fuel-cell electric vehicles (FCEVs) are ideal solutions to this problem
The results showed that the costs of these two power systems become similar quickly from 2025 to 2030; after 2040, the cost of FCEVs will drop below that of BEVs and gain remarkable advantages in larger models and longer traveling distance [23]
Summary
China has become one of the largest energy consumers and importers in the world [1]. Z. Mokrani et al studied the fuel cell/accumulator power systems used in PHEVs and verified the effectiveness of the EV energy management and control strategy they came up with via a hybrid system simulation model based on Matlab/Simulink [22]. The simulation and test results of the three vehicles were comprehensively compared, and the real-world driving cycle adaptability of electric vehicles was analyzed. It uses vehicle motion parameters (such as velocity and accelerated velocity) as input and simulates power required for vehicles to move forward via the efficiency diagram and power model, and is suitable for the micro-analysis of energy flow process [25].
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