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Achievable torque from regeneration

Achievable torque from regeneration

Achievable torque from regeneration

(OP)
Hello guys,



I have been trying to calculate the maximum torque that be applied to my driveline through regenerative braking, using the equations from this paper: https://smartech.gatech.edu/bitstream/handle/1853/...



I have been using the equation T=-(K^2/Ra)*omega , the motor I have has an armature resistance of around 0.2Amps, 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

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