Energy Flow of a Plug-In Electric Vehicle under the New European Driving Cycle

Fuel cell hybrid electric vehicle (FCHEV) is one of the most efficient technologies to solve the problems of the energy shortage and the air pollution caused by the internal-combustion engine vehicles, and its performance strongly depends on the powertrains’ matching and its energy control strategy. The theoretic matching method only based on the theoretical equation of kinetic equilibrium, which is a traditional method, could not take fully use of the advantages of FCHEV under a certain driving cycle because it doesn’t consider the target driving cycle. In order to match the powertrain that operates more efficiently under the target driving cycle, the matching method based on driving cycle is studied. The powertrain of a fuel cell hybrid electric bus (FCHEB) is matched, modeled and simulated on the AVL CRUISE. The simulation results show that the FCHEB has remarkable power performance and fuel economy.

Download Full-text

Developing an electric vehicle urban driving cycle to study differences in energy consumption

Environmental Science and Pollution Research ◽

10.1007/s11356-018-3541-6 ◽

2018 ◽

Vol 26 (14) ◽

pp. 13839-13853 ◽

Cited By ~ 13

Author(s):

Xuan Zhao ◽

Jian Ma ◽

Shu Wang ◽

Yiming Ye ◽

Yan Wu ◽

...

Keyword(s):

Energy Consumption ◽

Electric Vehicle ◽

Driving Cycle

Download Full-text

Reducing Mobile Air Conditioner (MAC) Power Consumption Using Active Cabin-Air-Recirculation in A Plug-In Hybrid Electric Vehicle (PHEV)

World Electric Vehicle Journal ◽

10.3390/wevj9040051 ◽

2018 ◽

Vol 9 (4) ◽

pp. 51 ◽

Cited By ~ 8

Author(s):

Chengguo Li ◽

Eli Brewer ◽

Liem Pham ◽

Heejung Jung

Keyword(s):

Air Quality ◽

Power Consumption ◽

Electric Vehicle ◽

Fuel Economy ◽

Hybrid Electric Vehicle ◽

Driving Cycle ◽

Total Power ◽

Air Conditioner ◽

Hybrid Electric ◽

Cabin Air Quality

Air conditioner power consumption accounts for a large fraction of the total power used by hybrid and electric vehicles. This study examined the effects of three different cabin air ventilation settings on mobile air conditioner (MAC) power consumption, such as fresh mode with air conditioner on (ACF), fresh mode with air conditioner off (ACO), and air recirculation mode with air conditioner on (ACR). Tests were carried out for both indoor chassis dynamometer and on-road tests using a 2012 Toyota Prius plug-in hybrid electric vehicle. Real-time power consumption and fuel economy were calculated from On-Board Diagnostic-II (OBD-II) data and compared with results from the carbon balance method. MAC consumed 28.4% of the total vehicle power in ACR mode when tested with the Supplemental Federal Test Procedure (SFTP) SC03 driving cycle on the dynamometer, which was 6.1% less than in ACF mode. On the other hand, ACR and ACF mode did not show significant differences for the less aggressive on-road tests. This is likely due to the significantly lower driving loads experienced in the local driving route compared to the SC03 driving cycle. On-road and SC03 test results suggested that more aggressive driving tends to magnify the effects of the vehicle HVAC (heating, ventilation, and air conditioning) system settings. ACR conditions improved relative fuel economy (or vehicle energy efficiency) to that of ACO conditions by ~20% and ~8% compared to ACF conditions for SC03 and on-road tests, respectively. Furthermore, vehicle cabin air quality was measured and analyzed for the on-road tests. ACR conditions significantly reduced in-cabin particle concentrations, in terms of aerosol diffusion charger signal, by 92% compared to outside ambient conditions. These results indicate that cabin air recirculation is a promising method to improve vehicle fuel economy and improve cabin air quality.

Download Full-text

Engineering of Light Electric Commercial Vehicle

Science & Technique ◽

10.21122/2227-1031-2020-19-1-63-75 ◽

2020 ◽

Vol 19 (1) ◽

pp. 63-75

Author(s):

R. Dorofeev ◽

A. Tumasov ◽

A. Sizov ◽

A. Kocherov ◽

A. Meshkov ◽

...

Keyword(s):

Mathematical Model ◽

Electric Vehicle ◽

Electric Motor ◽

Field Tests ◽

Angular Speed ◽

Maximum Energy ◽

Driving Cycle ◽

Thermal Calculation ◽

Technical Solutions ◽

The Mathematical Model

The paper describes the process and results of the development of the light commercial electric vehicle. In order to ensure maximum energy efficiency of the developed vehicle the key parameters of the original electric motor. The article also presents the results of power electronic thermal calculation. For the mathematical model of the vehicle, the driving cycle parameters of the electric platform were determined in accordance with UNECE Regulations No 83, 84. The driving cycle was characterized by four successive urban and suburban cycles. The mathematical model also takes into account the time phases of the cycle, which include idling, vehicle idling, acceleration, constant speed movement, deceleration, etc. The model of the electric part of the vehicle was developed using MatLab-Simulink (SimPowerSystems library) in addition to the mechanical part of the electric car. The electric part included the asynchronous electric motor, the motor control system and the inverter. This model at the output allows to obtain such characteristics of the electric motor as currents, flows and voltages of the stator and rotor in a fixed and rotating coordinate systems, electromagnetic moment, angular speed of rotation of the motor shaft. The developed model allowed to calculate and evaluate the performance parameters of the electric vehicle. Technical solutions of the electric vehicle design were verified by conducting strength calculations. In conclusion, the results of field tests of a commercial electric vehicle are presented.

Download Full-text