Question

2 poles 1. (36') A 3-phase stator is wounded to haveDraw the stator (2') and the windings of the 4-pole stator(6'), label the winding signs (e.g., a1+, a1-, etc.)(6'), label the axes of all windings(6'). The windings are fed with balanced three phase currents as below: i,Im sin(ot 120) Please draw the magnetic field vectors produced by each single phase, and the total magnetic field vector of the three-phase windings for the following moments. Please draw one figure for each of a), b), c), and d). a) (4') at=0 b) (4')out = 90' c) (4')at=150. d) (4) ot 240 。

Answer 1