Question

1- The following experimental data belong to a three-phase synchronous motor, which is being powered by a three-phase voltage source of 208 V. The current I1 is the magnitude of the stator line current (in amperes), while the current I3 is the DC excitation current in the rotor winding (in amperes). The readings of the method of the two wattmeters are identified by W1 and W2 (in watts). Calculate the actual input power Pse to the motor in watts (W), the reactive power Q3phase input to the motor in volts-amperes-reactive (VARS), the power factor and indicate, when applicable, if the power factor is behind or advance. Also, indicate if the motor behaves as a resistive, inductive or capacitive load for the source. (20 points)

Comportamiento (R,Lo C) Atrasado o P34 (W) Q34 (VARS) Factor de W2 (W) W1 (W) I3 (A) I1 (A) adelantado potencia 114 -47 0.8 93 0.6 -37 0.1 70 0.5 -17 0.2 40 10 0.2 0.3 25 25 0.14 0.4 10 40 0.2 0.5 -12 66 0.4 0.6 -24 80 0.5 0.7 -35 100 0.7 0.8 3

Answer 1

Casa3(,-0,) Poloer factor Sndicafm Cem paral 3 (w) 34Poor factor (u) (VAR) CR,L,C) 47 -216.8 0.234 behind R C 37 93 -225. RC .241 0.331behnd advence advane advene -7 53 -150-t RC 40 -51.96o.613 RC 25 25 O R s1.96 50 RL 40 0.613 behnd RL 54 135.1 0.31 -12 behnd RL 180.13 0. 29 5 6 behnd RL 6.268 233.8 GS -35 3