Electric vehicle Definition and 34 Threads

I have never been impressed with Electric Vehicle (EV) solutions in general. But this one is going in a direction that I like. A great solution for an easy transition with lots of potential for the full EV semi-truck of the future. You hook up the EV of Revoy between the trailer and the...

TL;DR Summary: I need help with calculating how much a motor will be able to pull. Hi all, I am currently in my first year of engineering and we have a project which requires us to use motors to drive a 4kg max vehicle. I was planning on using the very common yellow DC motors which have...

How can electric vehicle deliver energy to grid? This is the one of the few block diagrams that I could see in google. Do you have better one or can you explain this one? If I am not wrong. V2G is basically giving excess charge in your EV back to the grid.

Greetings everyone I work at a company that sells chargers for electric vehicles and I’m working on the electrical projects. The chargers I work with, are alternating current (AC) and the main mode here is a three-phase installation 220 V, at 7.04 kW with a current of 32 amps. If the system...

This is another open ended question, exploring a space of design concepts, in similar spirit to this. I want to explore monopods with regard to travel in densely populated cities(even possibly intercity travel). The main idea is to use small personalized pods to travel in tubes(or tracks). The...

Summary:: How to form an automatic billing system through Bluetooth and mobile phones? For commercial purposes, how can my system automatically signal, calculate the billing value and actually perform the billing or transfer the transaction from a credit or debit card or a bank account? [Note...

Hello guys, I'm trying to calculate the torque for a 3 wheeler electric (small vehicle). 2 driving wheels and one driven wheel. At the driving wheels we have a BLDC motor for each wheel. We want to calculate the torque for resting( not going down hill) on inclined plane (angle={5,10,15...

tesla cybertruck does promise a range of 250 to 500 miles and has 1 - 3 electric motors. Is this a good electric vehicle purely based on just its specs.

Hey all! I am working on my first ebike build and posted a question about friction drives earlier. Now, I have decided to go with a Mid-drive. I made calculations and found out the torque and rpm required for the build. But I am having difficulty find the right motor and gear ratio. I am trying...

So I'm interested in adding a bank of capacitors to help reduce the initial load on my batteries when accelerating from a stop but my current set up uses regenerative braking. My electrinics are this order, Motors, VESC, BMS, 10s5p Li-ion pack. If I add capacitors between the bms and vesc to...

So cars usually specify the batteries in kWh (rather than Ah). So given that i know the kWh capacity of a car. I also know the charging effect in W (i.e. the voltage and amps in my charging station). Can I reasonably estimate the time it'll take to charge the battery? It doesn't have to be...

Hi.. i am working on a developemnt of electric vehicle as my final year project..i have calculated the max. power required by 800 kg vehicle is 30 kw.. so i am using 30 kw 3 phase AC induction motor.. now can you please help me out in sizing my battery pack.. weight : 800kg max. velocity : 80...

Would it be possible to engineer a self-charging vehicle... Harnessing kinetic, solar, and wind energy?

Hi, I am a beginner in terms of mechanics and am an electrical engineer so I apologize in advance for asking what may be trivial questions. I am attempting to create a prototype design for an electric vehicle (truck) in which I am mimicking the Telsa drive train configuration but I am stumped...

Hello! I found how to calculate here: http://liionbms.com/php/precharge.php But the problem is, that when I used online calculator, it gives me that with resistance 531, my charging time to 288V will be about 2.3 seconds instead 5 seconds, that I need. Online calculator here...

Good evening, This Conversation is in regards to questions i have of a project of mine. I am, in a sense, looking to make a generator of sorts, one that uses a magnetic tesla turbine in order to power an electric motor. Unfortunately, i am at a loss for what formula i would need to figure out...

Lets say we have a car with no engine, just a shell. We want to create an extremely efficient electric vehicle. If we have unlimited resources and man power how would you go about making this vehicle?

Hi guys, I've been reading a bit and watching a few youtube videos on electric aircraft, but have come across little to do with supersonic aircraft. As far as I understand it an electric aircraft would use basically fans to push air behind it and as such generate thrust. The problem would be...

I have been thinking of a concept for a class 7-8 semi-tractor trailer that is hybrid electric. The basic idea is a fully electric drive system that propels the truck with electric motors only. A lithium-ion battery pack stores energy for the drive system. A diesel generator provides electricity...

Homework Statement For the following calculations, assume a typical electric car will need to apply a constant forc of 165 N to maintain a typical highway speed of 100 km/hr (27.7778 m/s). A: What power (watts) is needed to maintain this speed? B: What energy (Joules) is needed to travel 100...

I am in the design phase of a lightweight electric city vehicle with a capacity of 15kWh. I am at a stage where I am moving elements like Electric motors, tranmission, DC-DC converters, Inverters, Battery charger and battery pack in a CATIA software model. In-order to cater to the wide-range of...

what will happen if I ground my 12v(low voltage system) and 144v(high voltage system) to a common ground?

we are designing a electric car. in that motor controller has capacitors which get charged when supply is given.so across the contactor we are attaching a precharge resistor,which prevents the hiigh inrush of current in motor controller. now we are stuck on the ques that how to discharge the...

I notice that electric vehicle batteries (such as the one in the Tesla) are made of a bahzillion little batteries. I also notice that electric vehicle batteries seem to be absurdly expensive. A small battery is made of a case, some metals and chemicals. Can they not scale up this process...

I want to calculate the range of an Electric Vehicle (EV) with a Li-ion battery of 200 Wh/kg. Parameters v= 50 km/h = 14 m/s A= 0.8 m2 d = 500 m efficiency = η= 85% mc = 900 kg incl. 100 kg battery ρ = 1.3 kg/m3 First I have calculated the power of the EV with a speed of 50 km/h and...

Last year I built an electric car. I converted a 1966 MG to electric using 8 led acid batteries (96V bus), a DC motor coupled to the transmission, and a large motor controller. The vehicle was working fine. Top speeds of 55 mpg, but with many led acid vehicles, only a 20 miles range. The DC...

i found that this invention uses water and aluminum to make hydrogen in the most efficient way, uses only 1 kg aluminum for 600km for a 900kg vehicle. for more details click the link http://anon99.tripod.com/water_engine/index2.html Is this technology a better solution for today's crisis. if...

the requirement of electricity by EV would lead to huge investment in power stations so should electric vehicles be banned. For more information: [crackpot link deleted]

I have an concept electric car, i calculated it will need 15,000 Wh stored in batterys to operate over its required range (100 miles) on a certain drive cycle. I am attempting to work out how many batteries i need. The motor it is powering has a voltage rating of 156 vDC specs here...

I have an concept electric car, i calculated it will need 15,000 Wh stored in batterys to operate over its required range (100 miles) on a certain drive cycle. I am attempting to work out how many batteries i need The motor it is powering has a voltage rating of 156 vDC specs here...

I have recently come across a few electric motors (donated to me for my school's Technology Club), two from a wheel chair with gear reduction and another power window motor from a car. The power window motor has a worm gear on it of course, which is directly attached to the axle, but can be cut...

Hi, i really hope someone can help me with this... what type of battery that is suitable for an electric vehicle(slow walking speed,electric wheel barow)? is it a deep cycle marine? I have a problem on how to choose the correct battery. i have choose a motor which can produce a max...

I hope someone could verify/help/alter/add on my design calculation of an electric vehicle (in my case is a powered wheel barrow,3wheel, 2front wheel,1 back wheel castor, dc electric motor powered 2 front wheel). The specifications are: Speed : 2m/s maximum Weight : 150 max kg Gearbox...