A Cost-Effective Stimulus Generator for Battery Channel Characterization in Electric Vehicles

2014 ◽  
Author(s):  
Shao-Feng Hung ◽  
Long-Yi Lin ◽  
Hao-Chiao Hong
Keyword(s):  
Electric Vehicles ◽  
Cost Effective ◽  
Effective Stimulus ◽  
Channel Characterization ◽  
Stimulus Generator

scholarly journals Impact of Different Charging Strategies for Electric Vehicles in an Austrian Office Site

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5858
Author(s):  
Carlo Corinaldesi ◽  
Georg Lettner ◽  
Daniel Schwabeneder ◽  
Amela Ajanovic ◽  
Hans Auer
Keyword(s):  
Electric Vehicles ◽  
Electricity Market ◽  
Optimization Problems ◽  
Real Life ◽  
Cost Effective ◽  
Sensitivity Analyses ◽  
Specific Power ◽  
Mathematical Representation ◽  
High Concentration ◽  
Linear Relationships

Electric vehicles represent a necessary alternative for wheeled transportation to meet the global and national targets specified in the Paris Agreement of 2016. However, the high concentration of electric vehicles exposes their harmful effects on the power grid. This reflects negatively on electricity market prices, making the charging of electric vehicles less cost-effective. This study investigates the economic potential of different charging strategies for an existing office site in Austria with multiple charging infrastructures. For this purpose, a proper mathematical representation of the investigated case study is needed in order to define multiple optimization problems that are able to determine the financial potential of different charging strategies. This paper presents a method to implement electric vehicles and stationary battery storage in optimization problems with the exclusive use of linear relationships and applies it to a real-life use case with measured data to prove its effectiveness. Multiple aspects of four charging strategies are investigated, and sensitivity analyses are performed. The results show that the management of the electric vehicles charging processes leads to overall costs reduction of more than 30% and an increase in specific power-related grid prices makes the charging processes management more convenient.

scholarly journals Modeling the Future California Electricity Grid and Renewable Energy Integration with Electric Vehicles

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5277 ◽  
Author(s):  
Florian van Triel ◽  
Timothy E. Lipman
Keyword(s):  
Electric Vehicles ◽  
Capital Investment ◽  
Cost Model ◽  
Cost Effective ◽  
Energy Integration ◽  
Electricity Grid ◽  
Charging Infrastructure ◽  
Simulation Tools ◽  
Storage Technologies ◽  
Charging Demand

This study focuses on determining the impacts and potential value of unmanaged and managed uni-directional and bi-directional charging of plug-in electric vehicles (PEVs) to integrate intermittent renewable resources in California in the year 2030. The research methodology incorporates the utilization of multiple simulation tools including V2G-SIM, SWITCH, and GridSim. SWITCH is used to predict a cost-effective generation portfolio to meet the renewable electricity goals of 60% in California by 2030. PEV charging demand is predicted by incorporating mobility behavior studies and assumptions charging infrastructure and vehicle technology improvements. Finally, the production cost model GridSim is used to quantify the impacts of managed and unmanaged vehicle-charging demand to electricity grid operations. The temporal optimization of charging sessions shows that PEVs can mitigate renewable oversupply and ramping needs substantially. The results show that 3.3 million PEVs can mitigate over-generation by ~4 terawatt hours in California—potentially saving the state up to about USD 20 billion of capital investment costs in stationary storage technologies.

scholarly journals Common Metal Die Attachment for SiC Power Devices Operated in an Extended Junction Temperature Range

2012 ◽  
Vol 717-720 ◽  
pp. 853-856 ◽  
Author(s):  
Satoshi Tanimoto ◽  
Kohei Matsui ◽  
Yusuke Zushi ◽  
Shinji Sato ◽  
Yoshinori Murakami ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Cost Effective ◽  
Consumer Electronics ◽  
Junction Temperature ◽  
Test Results ◽  
Power Devices ◽  
Short Term ◽  
Die Attachment ◽  
Temperature Range ◽  
Soldering Process

A new high-temperature die attachment system that is cost effective has been strongly desired for SiC power applications in electric vehicles and consumer electronics. This paper presents preliminary results for SiC/Zn-Al/Cu-SiN die attachments using eutectic Zn-Al solder (m.p. = 356°C), focusing on preparation and die-shear reliability. Superior wettability and reproducibility were achieved in the soldering process. It was found that the attachments were viable at least for short-term application in a temperature range up to 300°C. Reliability test results revealed that they could withstand storage for 1500 hours at 200°C and thermal cycle stress of 1500 cycles between –40°C and 200°C.

scholarly journals Design of a sustainable personal mobility system (SPMS)

2011 ◽  
Author(s):  
Ralph O. Buchal ◽  
Adam Day ◽  
J. Cooper Robinson
Keyword(s):  
Undergraduate Students ◽  
Electric Vehicles ◽  
Ghg Emissions ◽  
Cost Effective ◽  
Personal Mobility ◽  
Mobility System ◽  
Personal Transportation ◽  
Student Projects ◽  
Is Design ◽  
Social And Environmental Impacts

Engineers must consider social and environmental impacts of engineering, particularly sustainability. Student design projects should help develop this competency. A suitable theme is design to address the challenge of global warming. Personal transportation is a major contributor to greenhouse gas (GHG) emissions, and students at Western have worked for several years on the design of a Sustainable Personal Mobility System (SPMS). SPMS is a vehicle sharing system using ultralight electric vehicles (ULVs) powered by renewable energy. Western undergraduate students have developed and analysed the SPMS concept, and have concluded that it is feasible to provide convenient and cost-effective personal mobility while reducing GHG by at least 85% compared to private cars. The design of a suitable ULV would be an excellent new direction for student projects, including existing solar car teams.

scholarly journals Efficiency of Governmental Policy and Programs to Stimulate the Use of Low-Emission and Electric Vehicles: The Case of Romania

2021 ◽  
Vol 14 (1) ◽  
pp. 45
Author(s):  
Ioana C. Sechel ◽  
Florin Mariasiu
Keyword(s):  
Co2 Emissions ◽  
Electric Vehicles ◽  
Cost Effective ◽  
Government Policies ◽  
Transport Sector ◽  
Primary Analysis ◽  
Government Programs ◽  
The Road ◽  
Transportation Sector ◽  
Low Emission

The contemporary demands for massive reductions in industrial pollution caused by the transport sector, especially in large urban agglomerations, compel local and national authorities to propose, develop, and implement programs and policies that have the ultimate goal of significantly reducing (or eliminating) pollution. The aim of this article is to provide a primary analysis of the effectiveness of Romanian government policies in terms of reducing pollution (CO2 emissions) caused by transportation (due to the “Rabla Plus” (RP) program, through which financial subsidies are granted for the purchase of a new plug-in hybrid electric vehicles (PHEVs) or battery electric vehicle (BEVs)). After analyzing the justification for the use of low-emission and electric vehicles in traffic (as a major solution to eliminate pollution), a comparative analysis of energy-efficient transport for Romania and Europe is presented in order to identify the directions in which it is necessary to develop and implement government policies specifically in Romania, considering a series of indicators chosen and considered by the authors to be important, including CO2 emissions compared with the size of the road infrastructure, the number of registered vehicles, the number of passengers transported, and the quantity of goods transported. With the identification of the ability of government programs to encourage the acquisition and use of low-emission and electric vehicles in traffic, the efficiency achieved is calculated in terms of the net CO2 emissions eliminated (average values of 1949.23 CO2 tons/year and 1.71 CO2 tons/vehicle). Furthermore, this aspect is also beneficial for analyses in terms of the economic costs involved (the associated costs are estimated to be 7034.17 EUR/ton of CO2 eliminated from the transportation sector), identifying new directions of action that are more cost-effective and sustainable and on which government policies should focus in the future.

A cost effective accumulator management system for electric vehicles

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
Suchitra D ◽  
Rajarajeswari R ◽  
Dhruv Singh Bhati
Keyword(s):  
Electric Vehicles ◽  
Management System ◽  
Lithium Ion ◽  
Cost Effective ◽  
Battery Management System ◽  
Battery Management ◽  
Cell Parameters ◽  
Battery Design ◽  
Battery Packs ◽  
Cost Efficient

AbstractAn accumulator or battery is an energy storage cramped in an adaptable stockade. Lithium-ion batteries are commonly used in hybrid electric vehicles (HEV) and battery operated electric vehicles (BOEV) due to its eco-friendliness and increased efficiency. To maintain lithium batteries in the safe operating region and also to perform tasks like cell balancing, preventing thermal runaway, maintain the state of health, an effective battery management system (BMS) is required. The BMS should also communicate effectively between host devices and battery packs. This paper proposes a reliable, modular and cost-efficient BMS, which will emanate an alert when a fault occurs and thus preventing the battery from damage. An efficient control strategy has been proposed for charging and discharging of the battery pack. The thermal analysis of the lithium-ion battery used in this work is simulated using battery design studio (BDS) with the inclusion of a self-discharging effect. The proposed hardware setup also provides a provision for on-board diagnosis (OBD) and logging in the accumulator management system (AMS) to constantly monitor the cell parameters like voltage, current, and temperature. The live data display of AMS working is also shown during abnormal and normal conditions. Also, an attempt is made to use the design of proposed AMS for HEV.

scholarly journals Bilevel vs. Passive Equalizers for Second Life EV Batteries

Electricity ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 63-76
Author(s):  
Ngalula Sandrine Mubenga ◽  
Boluwatito Salami ◽  
Thomas Stuart
Keyword(s):  
Electric Vehicles ◽  
Second Life ◽  
Lower Cost ◽  
Lithium Ion ◽  
Cost Effective ◽  
The Other ◽  
Capacity Fade ◽  
Battery Capacity ◽  
Energy Storage Applications ◽  
Cell Average

Once lithium-ion batteries degrade to below about 80% of their original capacity, they are no longer considered satisfactory for electric vehicles (EVs), but they are still adequate for second-life energy storage applications. However, once this level is reached, capacity fade increases at a much faster rate, and the spread between the cell capacities becomes much wider. If the passive equalizer (PEQ) from the EV is still used, battery capacity remains equal to that of the worst cell in the stack, just like it was in the EV. Unfortunately, the worst cell eventually becomes much weaker than the cell average, and the other cells are not fully utilized. If operated while the battery is in use, an active equalizer (AEQ) can increase the battery capacity to a much higher value close to the cell average, but AEQs are much more expensive and are not considered cost effective. However, it can be shown that the bilevel equalizer (BEQ), a PEQ/AEQ hybrid, also can provide a capacity very close to the cell average and at a much lower cost than an AEQ.

Sign in / Sign up

Export Citation Format

Share Document