The MGB Electric Sports Car

Analysis by Warren Winovich

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An MGB electric sports car conversion

(home built design)

curb weight2530 pounds
cross section area16.6 square feet
drag coefficient0.602
rolling force0.0075[1 + (V, mph/90)2] #/lbm
motor15-kW, 3-phase, 4-pole, induction
14 #-ft @6000rpm @ rating
70V @ 48 A per phase, continuous
50 kW, short-term (150A per phase)
battery packeight lead-acid AGM, sealed units
96V @ 100 A-hrs; 9.6 kW-hrs
65 milliOhms pack resistance
0.845 Peukert number: I x tP = const.
ControllerCurtis three-phase inverter; 120 Volts
0 200 Hz (4-pole stator)
20 kW continuous, 50 A per phase
60 kW short-term, 150 A per phase
95% efficiency
drivetraindirect-drive; gear ratio 8.00:1
90% power transmission efficiency
top speed55 mph (set by motor speed)


Figure 2. Specifications of the MGB sports car used in a performance analysis as an electric-powered car.

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