WarP 11" HV performance

[CroDriver]

I have purchased 3 WarP 11" HV motors that are in Jim Husted's shop now. I have some the test results from the Net-Gain factory. They tested them at ONLY 72V and maximum 590 Amps.

I asked them why they don't test them at higher voltages. Here is their answer:

Mate,

That question comes up every time..... The dyno is only capable of 72 volts..

Volts and RPMs are nearly linear, so doubling the voltage will double the RPMs. Torque will remain the same if the amps don't change.....

George

...so I made a graph based on the available data:

I have no idea if this graph will prove in real-life but I can't do better because of the lack of information.

My motor will probably perform better than that because Jim is building in some of his performance parts.

My biggest question is if the motor will have any power above 5000 RPM. A experienced electric motor designer from a big company in Croatia told me that the rotor field has to be weakened to have some power in the upper RPM band. Since there are no controllers that control the stator and rotor windings separate, I guess that I have to gear the car to drive 150 mph at 5.000 RPM. Or is there some other way to squeeze more power out of them at high RPM's?

Btw. The car will have two motors, every will have it's own Zilla Z2K EHV and a 370V nominal, 2000Amp capable pack. Direct drive (LSD)

 

[Doctorbass]

370V nominal, 2000Amp

Killacycle power.. hmmmmm!

You said two Warp 11.. !! OMG!!

 

[AussieJester]

Btw. The car will have two motors,

LoL...of course it will CroDriver, we wouldnt expect anything less of you mate hehee... insane power buddy cant waaaaait too see this baby arch up!!!! Best of luck with the build hope it goes as smoothly as it can for you buddy

KiM

 

[amberwolf]

My biggest question is if the motor will have any power above 5000 RPM. A experienced electric motor designer from a big company in Croatia told me that the rotor field has to be weakened to have some power in the upper RPM band. Since there are no controllers that control the stator and rotor windings separate, I guess that I have to gear the car to drive 150 mph at 5.000 RPM. Or is there some other way to squeeze more power out of them at high RPM's?

Sure--use a separate controller for the field windings. Then you can setup a throttle control with electronics necessary to keep the field controller at the same level as the rotor controller up to a certain RPM, then begin weakening (or strengthening) the field as needed at higher RPM, automagically.

 

[Malcolm]

CroDriver
I guess you've probably seen this on EVDL but I'll post it here anyway just in case:

As per NetGain, the motor would *likely* handle a 9000 rpm peak. However,
NetGain does not recommend taking the motor beyond the 5000 to 5500 RPM
range! Second, if one did decide to ignore that recommendation, running it
at higher rpms, approaching or equal to 9000, should not be sustained.

I have chosen to post the manufacturer recommended values on all my motor
listings on the EV Source website. Taking the motors to higher RPMs than
those recommended is at your own risk, and could cause motor damage or
injury to those in proximity to the motor. If you're determined to spin the
motors faster than the recommended values, 9000 is a good end-of-red-line
value, with the recommended values being the beginning of the red-line
zone. The motors should *never* be spun without a load, unless explicitly
following NetGain's bench testing procedures (
http://www.go-ev.com/end-users/005_007_Motor_Bench_Test.pdf)!

Ryan
EV Source