Total slots = 42, 2 conductors/slot Z=slots* conductors/slot = 2*42=84 = =28, = = Zph= Tph= 14 Eph= 4.44 Kc Kd f Tph Ф 1327.9056=4.44 × Ф ×50×0.952×0.956×14 Ф=0.4694Wb A 3- phase, 6 pole star connected alternator revolves at 1000 rpm. The stator has 90 slots and 8 conductors per slot. The flux per pole is 0.05 Wb. calculate the voltage generated by the machine if the winding factor is 0.96 line and phase value. [Dec 2013/Jan 2014] P=6, slots=90, conductors/slot= 8, = 0.05Wb, Kw=0.96, N = 1000 rpm Ф Slots/phase =144/3 =48 m = 3(three phase) = = = 20˚, = slot angle = = = Ns= ; f 50 Hz Z=slots× conductors/slot = 90 × 8= 720 = =240 Zph = = Tph = 120 Eph= 4.44 Kc Kd Tph= 1224.424V Ф f EL = = √3 Eph √3×1268.5=2120.7652V
Total slots = 42, 2 conductors/slot Z=slots* conductors/slot = 2*42=84 Zph= = =28, Tph= = = 14 Eph= 4.44 Kc Kd Ф f Tph 1327.9056=4.44 × Ф ×50×0.952×0.956×14 Ф=0.4694Wb A 3- phase, 6 pole star connected alternator revolves at 1000 rpm. The stator has 90 slots and 8 conductors per slot. The flux per pole is 0.05 Wb. calculate the voltage generated by the machine if the winding factor is 0.96 line and phase value. [Dec 2013/Jan 2014] P=6, slots=90, conductors/slot= 8, Ф = 0.05Wb, Kw=0.96, N = 1000 rpm Slots/phase =144/3 =48 m = 3(three phase) slot angle = = = = = 20˚, Ns= ; f = = 50 Hz Z=slots× conductors/slot = 90 × 8= 720 Zph = = =240 Tph = = 120 Eph= 4.44 Kc Kd Ф f Tph= 1224.424V EL = √3 Eph = √3×1268.5=2120.7652V