HOW DOES Regenerative Braking Work? 

Sounds like a personal problem

@@cameramanjonny you could be right.

Exactly

Fr.

EV's use Permanent Magnet Synchronous AC Motors. The concept of regenerative braking with these is actually extremely complex. A lot actually goes into the mechanics of regenerative braking with them. Due to the air gap flux being uncontrollable in them, the output voltage is directly related to the RPM of the rotor. To start, the motor controller changes the angle of difference between the stator field and rotor field. The closer to a 90 degree angle between the two fields, the more current is produced as well as rotational resistance. This would be what specifically controls the amount of force the regenerative braking system is applying to the vehicle. As said earlier, in these types of motors the RPM of the rotor dictates the voltage output of the motor during generation. The Inverter needs to be able to receive this voltage and regulate it back into the battery packs DC voltage. This means that if the battery is 400v, the motor is producing 750v @ 20a, the Inverter needs to do two things. First, it will step the AC voltage down from 750v to roughly 400v, meaning due to ohms law the amperage will be increased to 37.5a, then the inverter will regulate the 400v 37.5a AC into DC, which the battery can then accept.

Not that serious pal no one is getting annoyed from the small reflection 😂

I think it’s the electromagnetic field force that moves the motor but in reverse

I do. To put it simply the motor reverse’s it’s self creating a dynamo which generates electricity which charges the positive ions in the battery

@@EdenMotorGroup But at which moment does the motor reverse itself? why doesn't it brake anything when changing direction at high speeds? Does it uncouple itself from the drivetrain at the moment of recharging?

@@profdmiranda The motor doesn't change the direction of spin. The wheels, and all the gears between them and the motor, and the shaft running through the middle of the motor are all still turning in the same direction. What changes is that the motor is no longer receiving power from the battery to turn that shaft (or at least, it's not contributing as much). Instead, the momentum of the vehicle is turning the wheels on the road, so the wheels are now the generators in the system, turning the gears that spin the shaft that rotates the motor, which produces electricity from spinning.

Glad it helped

I'm not 100% sure but the Toyota Prius uses physical brakes under 5 mph

Regenerative braking can be used as the only braking system in normal stop and go traffic, but the issue is that regenerative braking currently doesn’t have the ability to quickly slow down fast enough to evade some emergencies and potentially crashes. This is why all EVs and Hybrids still include standard brakes, however this could change with improvements to the current technology.

Oops, you might want to hide it - your racism is showing.

Ev’’s use DC for drive to the wheels but AC for everything else