Questions related to Electric Vehicles
I am trying to calculate the heat generation (during charging) from a li-ion battery and I used Bernardi equation for that. Since dU/dT will be low, I calculated the heat flux as follows;
q = [1/A] * [ I^2 * R] (W/m^2)
Battery pack configuration: 3P30S
Cell capacity [Ah]: 100
Cell voltage [V] : 3.2
Cell’s bottom area [m^2]: 0.00405
Battery’s bottom area [m^2]: 0.3645
Internal resistance (at 25degC / 0% SOC): 0.001546 [ohm]
Since the C-rate is 2, I calculated the cell current as 200 [A].
When the values are put in place, the heat flux is 15.270 (kW/m^2) for a single cell. I couldn't understand where and how I made a mistake. Could you give me your opinions about it?
Normal car uses Radiatior system to cool down the engine system. But in Electric vehicle that there is no nead of radiators i think.
Someboby told me electric vehicles using heatsink. Please clarify what type of heatsink is used and how heat in Electric vehicle is controlled.
What would be the future trends of solar and energy storage for large-scale asset management for improved reliability, increased revenue, higher energy cost reduction and better asset life extension?
Any researcher who is interested in working together in the field of Powers Electronics & Drives, Converter & Inverter Design, MPPT Techniques, Solar Photovoltaic Systems, Microgrid, EV Charging Stations. And also interested in publishing good quality paper. Kindly contact me. And also here Give your suggestion and feedback.
Electrical vehicles have been touted as one of the major ways to combat global climate change. Without combustion of fossil fuel producing gases harmful for human health is a major step towards using electric vehicles but it requires some drastic steps to replace the gas fired vehicles. The cost of vehicles and the lack of supercharging stations are some of the obstacles need to be overcome before making it a potential solution. Unfortunately, this type vehicles are not yet available in many countries. What are your comments?
Electric vehicles (EVs) are now widely regarded as mature and promising for the future of mobility. As the markets expand, the next battery technologies are being marketed as a miraculous answer for the energy transition to zero-emission automobiles. EVs are seen as the silver bullet for end-user electrification and a major weapon for combating global warming, allowing us to shift without having to change any of our lifestyles or mobility, which are based on the private car. Unfortunately, the electric vehicle is not a clean or carbon-free technology. Is there a future alternative to our current mode of transportation? How will knowledge and cutting-edge technologies change and solve our transportation problems?
I'm looking for a data showing details of EV charging events, preferably in the US.
For example, a data showing that out of a total number of annual EV charging events, X% are using level 2 and Y% are using DCFC, or out of total X kWh EVs annually gained, Y% is gained via level 2 and Z% is gained via DCFC.
Thanks in advance!
need clear view about future research in Electric vehicle, also need drawbacks in domine. it can be anything in that field like battery management, power issues, thermal management and power charging
As EV charging stations are now available at residential places as well as offices and malls.
So can we say that now 80% of the EVs will always be available to support the grid?
Electric Vehicles are gaining acceptability all over the world . Further, carbon emission concerns could bring in policy changes in future, thus, hampering the growth of IC based vehicles. EVs could be disruptive in nature slowly killing the market . If that scenario is going to take place, how would the leading manufactures and their ancillary units are going to gear up for the future. I request learned members to provide answers to this critical question which is going to impact the existing auto ecosystem.
I created Electric vehicle dynamic model in Matlab Simulink.IT is showing the perfect result. But I am facing the difficulties when I am integrating that EV in any system or MG. Its either not running or its taking too much time to run.How to solve this issue,can anyone find the solution please let me know.
Electric Vehicles (EV) Technology are now considered as mature and promisingfor the future of mobility. As the markets are growing, the next batteries technologies are presented as a miraculous solution for the energy transition to zero emissions vehicles. EV are considered as the silver bullet of the electrification of end users and a key tool for fighting against global warming, allowing us to enter into transition without changing any of our lifestyles and mobility built around the private car. Unfortunately, the EV is far from being clean and carbon free technology. Is there another alternative solution for our mobility in the future? How knowledge and innovative technnologies will shape and solve our transportation issues?
Take an example, where a battery is to supply two power electronic converters separately. If we switch the contacts of the battery from one converter to the other using two contactors, will it create a significant loss in the converter paths? How much will the efficiency get affected by this method (using contactors)?
What are the other problems that can arise, like the effect in control (due to the resistance or any other component of the contactor)?
Up to date, what is the rated/maximum power of different electric vehicles on the market (if possible, can list some examples)? And how is the development trend in the future?
I need GA algorithm for Electric Vehicle Charging/Discharging using MATLAB/SIMULINK where i can change the data required and find some solutions. Thank You
I want to optimize the usable SOC range of hybrid vehicle in order to improve fuel economy. So. how to choose maximum and minimum SOC values for running an optimization algorithm?
All lithium ion battery pack/system in the Electric vehicle (EV) needs to achieve certain certification before entering the country's market.
So does anyone know all the standards, norms to satisfy USA for Electric vehicle battery packs?
I know a few examples like UN GTR Nr. 20
Any references or links will be usfeul
Labor Reforms in Saudi Arabia under Its Vision 2030 aims to address the problem, two of my research papers are based on the subject.
1) EXPLORING SAUDI REASONS FOR ECONOMIC REFORMS AND NEED TO STUDY THE SOCIAL IMPACT FOR ITS SUCCESS
2) 'Nitaqat' Law: Labor Market Reforms in KSA and its Impact
In continuation of it, I would like to discuss points that could address Gulf countries position and highlight future struggles for economic resources.
Electric cars have been introduced world wide with the idea that there will be some decrease in carbon footprints along with decrease in air pollution. But we have to charge an electric car on regular basis. From where that energy will come, is a big question. Some countries have hydel power generation, and some have thermal energy, the other may have solar also.
Second question is about water, air and soil pollution? If we shifted from air pollution to water and/or soil pollution, we have the ability to handle such mega scale pollutions?
In the light of the above, what is your analysis and views?
I am working on a research project on an Electrical Vehicle Charger. So, I need a model of it in Simulink. Can anyone have the model of it? I need it to get a high startup for my research paper.
Thanks in anticipation.
Engr. Mujtaba Farrukh
In the transportation sector (Electric vehicles), Lithium ion batteries particularly LFP and NMC are the most utilized battery packs today! What are the other expected options within Lithium-ion or other options could be possibly used in the future?
I am trying to simulate the following case: A three-phase source in a Matlab is connected to a Vienna Rectifier which is supposed to supply power to a resistive load of 50KW. Output DC voltage to be 800V DC and the input voltage is 400V AC. Technically a Vienna rectifier after rectification also improves power factor, that is, reduces the input current distortion to be less than 5%. I have designed almost everything correctly still neither the Vienna rectifier is reducing the input current distortion nor it is boosting the output voltage at the DC link to be 800V. I cannot figure out what is wrong. I am trying to solve this problem for the past 2 weeks still no solution.
To run the simulation, first, run the Vienna_rectifier_data.m file and then simulate the test.slx
The Matlab version is 2020b. If you need me to convert to an older version I can do that too.
Any kind of help is highly appreciated.
Generally, the HPPC test is used to calculate the battery peak charge/discharge power. However, I wanted to calculate the battery peak charge/discharge power under drive cycle test condition such as UDDS, US06 and FUDS.
Thanks in advance.
All lithium ion battery pack/system in the Electric vehicle (EV) needs to achieve certain certification before entering the country's market.
So does anyone know all the standards, norms to satisfy China compulsory certification (CCC) for Electric vehicle battery packs?
I know a few examples like GB 38031-2020
Any references or links will be usfeul
My research area is solar photovoltaic systems..
At present, I started to work on PV integrated Electric vehicle/Hybrid Electric vehicle...
I need your support to model the Electric vehicle/Hybrid electric vehicle in MATLAB/Simulink..
Instead of Electric vehicle, Is a DC/AC motor is connected at the output of PV system?
Hybrid Electric vehicle is modeled by any tow of the sources, then in case if Hybrid electric vehicle, what are the two types of loads need to be considered to model the hybrid vehicles?
Please guide me to model the Electric vehicle/Hybrid electric vehicle in MATLAB/Simulink.
As per a latest report, 22 of world’s 30 most polluted cities are in India. What strategies need to be adopted to bring down this number to say half (11) in the fastest possible timeframe.
For example, strategy could be like stopping all new construction activity within the polluting city, shifting all no strategic offices to rural areas, fixing the allowed population density per unit area, shifting of airport traffic etc.......Please give suggestions in this context.
I have seen it in multiple research articles that authors use certain approaches to predict electric vehicle battery's state of charge(SoC) and then they compare it with battery's true SoC. So I wanna know how can I get this true SoC curve? Is it obtained using OCV method or Coulomb Counting method or any other technique?
Thanks for your time.
Looking forward to your positive and helpful responses.
I wanted to calculate the probability of one consumer shifting from using a petroleum-fueled vehicle to an electric vehicle. Since my background is in engineering I do not know much about how to measure the consumer willingness to change. Has anybody has the knowledge to measure consumer behavior to change and then kindly explain to me with understandable words?
What if we put a Flywheel Energy Storage System between a Renewable Energy Source (Solar, Wind, etc) and an Electric Vehicle Chrager?
Would be possible to really improve charging time by taking advantage of key cababilities like high power density and also the capacity of several charge/discharge cycles?
Please bring your thoughts!! Free-Expression....
For example, if I have the following data for a LiNi0,8Co0,15Al0,05O2 compound used in the cathode:
- Specific capacity = 200 mAh/g
- Average voltage = 3,7 V
I have no information about the anode.
Is it possible to know how much energy is stored in a battery which uses this compound as a cathode? Otherwise, what information is missing to know that?
Thank you very much.
Early innovation by Toyota via the Prius established an early adopter crowd for electronic vehicles. Since, competition in many offerings: GM (Volt, Bolt), Nissan (Leaf), and the rise of Tesla set the stage for vehicle transportation energy transformation. However, what are the most impactful underlying factors(?), social adoption, introduction of valid market place products, technology advances, supporting infrastructure, policy...?
What research based support fortifies your answer?
The speed estimation of induction motor at low speed is not precise and this affects the sensor less control of induction motor . I like to know whether the above limitation affect performance of Electric Vehicle when the sensor less induction motor is used to drive vehicle
Which forecasting method should I use to project EV market size in the next 5 years? This is for a developing country where penetration of EVs is relatively low for four-wheelers but high for two- wheelers.
Is there a way or suggestion to some works that can give me some informations how the signals of the battery in the BMS are estimated especially the actual maximal capacity of the battery in Ah (in order to supervise the aging of the battery).
The signals I have:
actual SoC [%]
actual energy in the battery or power capacity [Wh]
Many thanks in advance
The battery pack used for an electric vehicle consists of several series connected batteries. Is there a need to monitor the charging status of each battery?
I noticed that many studies which treat Electric Vehicle charging (in a V2X scenario) as an MILP (Mixed-Integer Linear Problem) problem, consider a constraint to prevent that an EV (Electric Vehicle) could simultaneous charge and discharge during the same time slot (the duration of this inteval varies from a study to another; the most used are: 15 minutes, 30 minutes; 1 hour).
I'm agree in considering that charging and discharging an EV at the same continuous time instant is not a realistic scenario, but which could be the reason of preventing this situation during a time inteval which lasts 15 minutes or 1 hour?
PS: I guess that it's done to simplify the complexity of the problem, but I'm wondering if there are other reasons.
Here as We all know different changes are being made in the Electric vehicles for the improvement of the output. Now, We know that Batteries are the thing that are need to be improved the most as of Now in the Electric vehicles but is it the Only one to be Improved?
Don't we have other Improvement to be done in ELECTRIC VEHICLES.?
Hi everyone, i am making optimization for energy management system of EV charging station. I established the mathematical model objective function (minimization of electricity cost) and constraints then i made a Python simulation. In the simulation results, i got the charging station load profile (power profile and energy profile) the energy charged in the car is discharged later on in the charging station and i got in the end 0 cars charged. Anyone can help with ideas on how i limit the energy discharged to be equal only to the initial amount of the car and not every EV charged it discharge later. Thank you.
Dealing with LLC resonant converter simulation and would like to plot the efficiency curve. How Can I do that ? eff = Pout/Pin ( Pout I can calculate from Output voltage and current but input current seems to be partial sinusoidal and cannot deal with any calculation !)
As you all know, the TSO and DSO need Ancillary Services (AS) to maintain the security and reliability of the power system. What kind of Ancillary Services the Electric Vehicles can provide to the TSO and DSO?
I have designed a synchronous buck-boost converter for the supercapacitor. I've set the rated voltage to 32v and the number of series capacitors to 1. However, on the input side, the voltage displayed is 10.3v. The voltage doesn't add up either when I change the number of series capacitors. Where am I going wrong?
The model of Supercapacitor chosen is from electrical drives.
Although current volumes are limited, E-Mobility is expected to grow in a big way. Primary questions on top of investor's mind are : Is this the right time to invest in E-Mobility? If so, where?
Read my detailed analysis to find answers- https://www.linkedin.com/pulse/e-mobility-is-right-time-invest-so-where-rahul-gope/
By modifying the PWM of the CP signal, I can change the charging current of Electric vehicles in AC charging.
But how the current is controlled/reduced accordingly? Which side does this current control?
Does charging station (EVSE) supply the corresponding charge current? or EV controller in the vehicle side reduces the incoming current?
Any literature/references/docs/links will be useful. I tried searching, but couldn't find how the current is controlled/reduced
One of my doctoral students is working on Electric Vehicle adoption. For the purpose of completing the thesis, it is essential to collect the responses from potential users. Kindly take your time to fill the following survey.
Thanks in advance.
I am designing a control for bi-directional LLC-SRC DC-DC converter. The converter charges a battery from the grid. But during reverse operation, i.e when the current flows from battery towards the grid, what may be the impacts of current on the resonant capacitor (Cs as attached)? Do I need to wait for the discharge of DC link capacitors (fast/slow anyhow) on both sides? I cannot see any abnormal change or fluctuations during simulations. For practical approach, I am not sure. Any suggestions?
We have performed the DWC of electric vehicles in network topological order, where charge was transferred among paired EV(s). I need journal suggestion for its paper publication.
Given values are:- top speed is 120kmph and average is 60 kmph,total weight of bike 135kg.l=1800mm b=700mm and h=1100mm.
Suppose the wheel dia is 10inch.
Please someone find the power rpm and torque.
Dear colleague, Electric vehicles in today's world are leading with special controlling mechanism which are easily operated for every one. Even-though, they are vital and they do have better control mechanism still in our country Ethiopia there is shortage of electric vehicles. Therefore , what are the challenges in Electric vehicles to implement in Ethiopia for mass production?
Biodisel is one of the important renewable source of energy. Biodiesel also hepls to decrease the pollution if we use used as transportation fuel, so Is there any effect of Electric vehicle on future scope of bio-diesel?
Which types of electromobility or alternative solutions for the environmentally-friendly supply of motor vehicles are being developed in your countries?
Are they based mainly on purely electrical or hybrid engines that connect electric power with petrol or other, or power based on the combustion of hydrogen with oxygen?
I invite you to the discussion
Thank you very much
Lead acid or lithium ion batteries etc possesses harmful element's. Openly, disposal will get serious harm's to environment.
I am currently designing a BMS for a 48 V Battery pack of an electric vehicle. One of the major challenges regarding the BMS is to equalize the voltages of the cells (as different cell have different ageing) of the battery pack. How can one address this issue??
I built a Simulink vehicle model with Dugoff's tire model that requires two parameters to calculate Fx and Fy; namely, the longitudinal stiffness and the cornering stiffness. Now I would like to verify my Simulink model by comparing the results with MSC ADAMS. ADAMS does not have Dugoff's tire model. How can I get these two parameters from ADAMS ?
i hope you all are good. i am modeling a system for charging and discharging cost minimization for different EV (Electric vehicle) agents like households, business buildings and and industrial park. i need electricity price for these different users.
I preferably consider a Lithium Ferro Phosphate cell (32650 type) 3.2V 6Ah cell.
I have few cells both used and fresh. How to determine how much of Life cycle is used and how much remains.
What all equipment or procedures need to be done to check life cycle? I am not considering a battery pack with BMS for this Life cycle test.
Hope to get some information in this regard.
As we tend to use the batteries in general they start to degrade and in purchase of an electric vehicle more than 50% cost would be of the battery. If it tend to degrade then again investing in buying a new battery is an additional expense. How can we cope with this issue?
I want to use "adv_no_gui" functionality of ADVISOR in order to implement a new power management strategy and an optimization routine for a parallel hybrid electirc vehicle. But there is not enough information available in ADVISOR help. If anyone have experience in this field, please help me.
Hello, I have been studying electrochemistry for the last 2 years. When working with supercapacitors, I sparked interest in supercapacitor's use in electric vehicles. I would like to hear experts in electric vehicle powertrain about this topic. Thanks!