Re-Generative Braking is said to collect the heat that would otherwise be lost during braking and turn it into electric current. If this is true, how do they do it???
@heartlessvietboy Not really false, but poorly explained, electric vehicles convert the kinetic energy to electricity friction brakes convert the kinetic energy into heat. So it could be said that electric vehicles are collecting the energy that is normally lost as heat. Thanks for the questions hope I helped.
Regen using the drive motor/generator has too many conversions. mechanical>electrical>chemical then chemical>electrical>mechanical. The batteries can not accept the enegry fast enough to make it worth while. Capacitors could solve that problem but you still suffer conversion losses. Flywheel regen is the only way to do regenerative braking efficiently. I would really like to see that developed.
Regen braking is not an all or nothing proposition, if you were to ask it our regen capacity can and will lock the front tires. Normal driving scenarios regen is capable of slowing the vehicle and easily modulated, just as you would not apply full mechanical braking every time you stop. Even 30 amps of regen which is the recommended charging rate for the batteries will slow the car smoothly.
@IlluminatiMotorWorks 30amps can't stop a car any faster then it could accelerate it. A 300v 30a system, for example, can only produce about 10-12hp. It would be a slight drag to try and stop a car with 12hp. ~80% of braking is on the front tires. The driver would have to control the amount of braking just as they do with any braking system. Converting one form of enegry to the same form is much more efficient then converting it many times. Think desktop ball-clacker but with rotating mass.
We have an induction motor drive train that is capable of turning the kinetic energy into chemical energy efficiently. A device to capture the braking energy without increasing vehicle weight, can interface with a 200KW drive train, and is affordable, we will buy it. Regenerative braking into a battery bank is the best answer we have found thus far. If you have a good idea, build it. It is rewarding to see something become reality. You miss 100% of the shots you don’t take.
@IlluminatiMotorWorks "We have an induction motor drive train that is capable of turning the kinetic energy into chemical energy efficiently." That statement is pointless. It's a function of the battery to convert electrical enegry into chemical enegry. Not the motor's. You mat have an efficient "induction generator" but you do not have an efficient battery. That's the problem. They're are some solutions such as using capacitors to more efficiently absorb regen enegry but they add weight/cost.
@IlluminatiMotorWorks I haven't fiddled with EVs in years. I did a Geo conversion once and have a Yamaha FJ1200 that's 90% converted sitting in storage. I started to focus on controller design. At least I can sit at my desk designing it. :) Good luck with your project. I have a suggestion for regen for you. Shoot me a PM sometime. I'd be interested to see what you think about it.
Re-Generative Braking is said to collect the heat that would otherwise be lost during braking and turn it into electric current. If this is true, how do they do it???
heartlessvietboy 8 months ago
@heartlessvietboy We use our electric motor to slow the car this captures the kinetic energy and stores it in the batteries. It works very well.
IlluminatiMotorWorks 8 months ago
Then what is said about re-generative braking most of the time is false.
heartlessvietboy 8 months ago
@heartlessvietboy Not really false, but poorly explained, electric vehicles convert the kinetic energy to electricity friction brakes convert the kinetic energy into heat. So it could be said that electric vehicles are collecting the energy that is normally lost as heat. Thanks for the questions hope I helped.
IlluminatiMotorWorks 8 months ago
Regen using the drive motor/generator has too many conversions. mechanical>electrical>chemical then chemical>electrical>mechanical. The batteries can not accept the enegry fast enough to make it worth while. Capacitors could solve that problem but you still suffer conversion losses. Flywheel regen is the only way to do regenerative braking efficiently. I would really like to see that developed.
lazzer408 1 year ago
@lazzer408
Regen braking is not an all or nothing proposition, if you were to ask it our regen capacity can and will lock the front tires. Normal driving scenarios regen is capable of slowing the vehicle and easily modulated, just as you would not apply full mechanical braking every time you stop. Even 30 amps of regen which is the recommended charging rate for the batteries will slow the car smoothly.
IlluminatiMotorWorks 1 year ago
@IlluminatiMotorWorks 30amps can't stop a car any faster then it could accelerate it. A 300v 30a system, for example, can only produce about 10-12hp. It would be a slight drag to try and stop a car with 12hp. ~80% of braking is on the front tires. The driver would have to control the amount of braking just as they do with any braking system. Converting one form of enegry to the same form is much more efficient then converting it many times. Think desktop ball-clacker but with rotating mass.
lazzer408 1 year ago
@lazzer408
We have an induction motor drive train that is capable of turning the kinetic energy into chemical energy efficiently. A device to capture the braking energy without increasing vehicle weight, can interface with a 200KW drive train, and is affordable, we will buy it. Regenerative braking into a battery bank is the best answer we have found thus far. If you have a good idea, build it. It is rewarding to see something become reality. You miss 100% of the shots you don’t take.
IlluminatiMotorWorks 1 year ago
@IlluminatiMotorWorks "We have an induction motor drive train that is capable of turning the kinetic energy into chemical energy efficiently." That statement is pointless. It's a function of the battery to convert electrical enegry into chemical enegry. Not the motor's. You mat have an efficient "induction generator" but you do not have an efficient battery. That's the problem. They're are some solutions such as using capacitors to more efficiently absorb regen enegry but they add weight/cost.
lazzer408 1 year ago
@lazzer408
You have some fascinating ideas I look forward to seeing videos of your car’s energy recovery system in operation.
Good luck.
IlluminatiMotorWorks 1 year ago
@IlluminatiMotorWorks I haven't fiddled with EVs in years. I did a Geo conversion once and have a Yamaha FJ1200 that's 90% converted sitting in storage. I started to focus on controller design. At least I can sit at my desk designing it. :) Good luck with your project. I have a suggestion for regen for you. Shoot me a PM sometime. I'd be interested to see what you think about it.
lazzer408 1 year ago
nice name
MadHatterTruth 1 year ago
We are using an MES-DEA liquid cooled AC motor.
IlluminatiMotorWorks 2 years ago
What kind of motor are you working with? Have you tried regen with a series motor?
anewlow23 2 years ago