A new mandate for energy conversion: zero emission (electric) vehicles

2003 ◽  
Author(s):  
E.J. Cairns
Keyword(s):  
Energy Conversion ◽  
Electric Vehicles ◽  
Zero Emission

scholarly journals Energy conversion in motor vehicles.

2020 ◽  
Vol 183 (4) ◽  
pp. 50-57
Author(s):  
Andrzej Szałek
Keyword(s):  
Fuel Cells ◽  
Energy Conversion ◽  
Drive System ◽  
Motor Vehicles ◽  
Propulsion Systems ◽  
Automotive Market ◽  
Low Emission ◽  
Zero Emission ◽  
Harmful Substances ◽  
Drive Systems

The portfolio of the automotive market appears more and more low-emission and zero-emission propulsions in vehicles. This is the result of measures taken to limit or even eliminate the emission of harmful substances into the atmosphere generated by vehicles. The article covers issues related to energy conversion in automotive drive systems currently offered by automotive manufacturers. Standard, hybrid, hybrid plug-in, electric and fuel cells drive system were analyzed. Attention was drawn to the chain of energy transformations related to each of the analyzed drive systems. The efficiency of the presented vehicle drive systems was analyzed. General conclusions were formulated regarding the method of analyzing energy changes related to the operation of automotive propulsion systems. The article reviews selected author's own works on hybrid and hydrogen propulsions.

Application of New SEUMRE Global Optimization Tool in High Efficiency EV/PHEV/EREV Electric Mode Operations

2010 ◽  
Author(s):  
Adel Younis ◽  
Leon Zhou ◽  
Zuomin Dong
Keyword(s):  
Global Optimization ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Electric Vehicles ◽  
Hybrid Electric Vehicles ◽  
Mechanical Energy ◽  
Energy Conversion Efficiency ◽  
Optimal Operation ◽  
Model And Simulation ◽  
Operation Parameters

Electric Vehicles (EV), Hybrid Electric Vehicles (HEV), Plug-in Hybrid Electric Vehicles (PHEV) and Extend Range Electric Vehicles (EREV) draw mechanical power or regenerate electric power using multiple electric motors and generators (M/Gs). Conventionally, heuristics and experience based control rules are used to guide the determination of powertrain component operation parameters to obtain good efficiency. To achieve optimal vehicles electrical/mechanical energy conversion efficiency and to prolong the pure electric range of these vehicles, the energy conversion efficiency is to be maximized against powertrain component operation parameters using high fidelity model and simulation. However, the energy conversion efficiency model using vehicle powertrain component model and simulation is complex, multimodal, and computationally intensive. An efficient global optimization tool is needed to produce the optimal efficiency look-up surface for real-time control system implementation, or to search for the optimal operation parameters in real time. In this work, the electrical/mechanical energy conversion efficiency of EV and PHEV/EREV in EV mode is modeled using MATLAB Simulink based powertrain component models. In particular, a new 2 mode-plus EREV design is used as a design example. The optimal vehicle electrical/mechanical energy conversion efficiency under various powertrain component operation parameters are obtained using three alternative global optimization tools, Genetic algorithm (GA), Particle Swarm Optimization (PSO) and Space Exploration and Unimodal Region Elimination (SEUMRE). The conventional GA and PSO tools, with less efficient search efficiency and requiring long search time, are used for benchmark comparisons. The new SEUMRE global optimization tool is used obtain equally accurate results much efficiently. A rough look-up surface is created to demonstrate the difference in computational efficiency. Application of the SEUMRE global optimization tool allow refined and more accurate vehicle electrical/mechanical energy conversion efficiency map being created for the optimal operation of the EV/PHEV/EREV Optimal vehicle control schemes can then be generated in determining the speed and torque of the M/Gs of the vehicle without violating their physical constraints and achieving the overall maximum efficiency of the hybrid powertrain system. Results of the design optimization are presented and compared. New design guidelines are provided.

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