- #1

jakesmith

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I have been trying to calculate the maximum torque that can be applied to my driveline through regenerative braking, using the equations from this paper: https://smartech.gatech.edu/bitstre...ambamurthy_aravind_201305_mast.pdf?sequence=1

I have been using the equation T=-(K^2/Ra)*omega , the motor I have has an armature resistance of around 0.2Amps; while also as the magnetic constant is given by K=Em/omega , I have for the sakes of estimation let steady state applied voltage = back EMF voltage, this gave me: K(V/Rad/s)=18/127 = 0.142

Looking at some physical test data I could achieve 22Nm of torque at 84 rad/sec, but using this equation it shows I should only achieve 8.5Nm (calculated below)

(T=-(K^2/Ra)*omega = - (0.142^2/0.2)*84=8.5Nm

Would I be correct in saying that this is because the charge resistance of the batteries increases regeneration torque?

Kind regards

Jacob Smith