I saw this AC motor parameter calculator online: http://www.engineeringtoolbox.com/electrical-motor-calculator-d_832.html
It says for 100 Horse power, in 90% efficiency, 0.9 Power Factor and 220 V AC supply, 300A current is needed. But when I calculate like:
220V AC * 300 A AC * 0.707 (sine root mean sq) * 0.9 (PF) / 745.7 W (1 Horse power) = 56.3 HP
Where do I confuse about the calculation?
Also, for a special purpose, I need to calculate the horsepower based on current flow in windings. In these windings below:
Because I only know my inductance(L) value, radius(R), turns(N) and RMS current which is going to flow through these winding coils. I know these below;
L = 60 mH
R = 5 cm
d(wire diameter) = 0.4 mm
N = 210
And RMS current for each phase (current flow on armature windings) is 12 A (peak to peak)
how can I calculate the horse power by only these parameters? Can I be sure that this parameters are whether enough or not enough to drive a car? Thanks.