So the interpoled DC motor can work well with regen if the controller can handle it....what we need is a 400+V controller that can handle 2000A AND have the ability to Regen...Non interpole motors are the ones with regen problems and the controllers must be able to handle that incoming rush of amps. In a light weight vehicle the H3 can and does do just fine with regen and an interpole motor but if you try with a heavy vehicle and a standard series with no interpoles and advanced it will most likely blow both the motor and controller. The best one to use for the heavier vehicles is the H2 but that one is only built for 120 volts or less. Still that would be fine. The interpole motor should not be advanced if you intend to do regen. I will be trying my Zapi with regen as soon as I finish my Kostov and get my programmer from Zapi.
Zapi controllers are still available but have a lead time of a few months. Many have forgotten about them but they are still around. Mostly because they did not do regen properly but it was not the controller but the person building the vehicle and the type of motor. It was learned the hard way about standard series motors that were advanced for higher voltages and regen. They do not mix as when the regen function is active the motor is actually over advanced and can arc out. You want neutral timing for regen. Much easier on the motor and your motor will also have better torque but not as much on the high end. Use a transmission.
You're not asking for the impossible, just pretty damn close to it...So the interpoled DC motor can work well with regen if the controller can handle it....what we need is a 400+V controller that can handle 2000A AND have the ability to Regen...
Understood...how much does regen help range anyway...everyone says about 10% but thats sounds like a pretty rough estimate since a stop-n-go traffic driver would see a lot more regen than a freeway cruiser with no traffic driver...You're not asking for the impossible, just pretty damn close to it...
Pumping up the voltage from, say, 50-100 Volt to 400+ Volt won't be easy. To even have the slightest chance to pull it off you'd have to have a series/parallel-setup that switch to series in regen so you AT LEAST start at 100 Volt AND have a motor setup that can handle that insane pack voltage (in regen motor peak voltage = pack voltage) without blowing up.
On top of that, regen in series gets extremely complicated the more motor and battery voltage differs, so pushing the voltage that much will probably take you dangerously close to the point when the whole setup go totally wild and the current shoots up exponentially, most likely burning something up in the process (like the motor(s)...).
I think regen with a pack voltage of 300 might work with two motors, but it's a big might because there's simply too much that can go to hell.
What gap? You mean how a series (or sepex) dc motor is capable of much higher torque at very low RPMs compared to even the most sophisticated VFD and high-slip induction motor? *That* gap???So the interpoled DC motor can work well with regen if the controller can handle it....what we need is a 400+V controller that can handle 2000A AND have the ability to Regen...
This would really close the gap between the AC & DC EV setups...
You're reading Tesseracts comment as the devil reads the bible.The main reason most do not do regen is because very few controllers provide for that function. That is the reason and some excuses must be generated to show they are better so over time REGEN became a bad thing and NEEDING MASSIVE BRAKES to slow down your very heavy vehicle has become very good.
Yeah, but it's a lot harder on the motor so what would you rather wear down faster - the brake pads or the commutator and brushes??? I'll take brake pads any day of the week.I'd just like to pipe in and say that range isn't the only reason to want regen. Batteries add a considerable weight to the car, and it's a lot easier on the brakes if you're using regen to slow down as much as possible.
I think I covered this. DO NOT USE MOTORS WITH ADVANCED BRUSHES PERIOD. Neutral timed AND interpoled if you plan on using a series motor. Kostov is a good choice. They were designed from the beginning for regen. (Forklifts and Industrial Vehicles)EXTREMELY reluctant to make regen a user-programmable feature as it will rapidly destroy an advanced brush timing motor like the most popular WarP and ADC brands.
I took Tess's comment to mean he didnt want to make it user-programmable, because so many people ask the forums if they can do regen with just about any motor they find...and time after time the knowlegable ones have to reply and help them understand...I think I covered this. DO NOT USE MOTORS WITH ADVANCED BRUSHES PERIOD. Neutral timed AND interpoled if you plan on using a series motor. Kostov is a good choice. They were designed from the beginning for regen. (Forklifts and Industrial Vehicles)
I thought I did too... why are you yelling at me?!?I think I covered this....
Well, at least somebody is paying attention here...Bowser330 said:I took Tess's comment to mean he didnt want to make it user-programmable..
Gottdi, you know as well as i do that there will be several people who will buy the Evnetics controller, buy a motor that does not apply, incorrectly turn on Regen (if its user programmable), blow it up and then come back and try to get thier money back or whatever.
Yeah, I would be one of those people that has publicly expressed both sentiments...kittydog42 said:Also, like others have said, the main benefit to regeneration is really the natural braking, as the actual return of energy is very negligable.