Section 16.1: Single-Phase Induction Motors cont.
Electrical Method(s) cont.
The resultant magnetic field (mmf) is:
FR(t) = FH(t) + jFV(t) = |FR(t)|/q(t)
Which for FH(t) = FHcos(wt) and FV(t) = FVsin(wt) with FH= FV = F (by winding design) yields: |FR(t)| = Ö(FH2 + FV2) = Ö2F (constant) and q(t) = tan-1[FVsin(wt) / FHcos(wt)] = tan-1[tan(wt)] = wt (linear)
Which describes a (stator field) vector of constant magnitude Ö2F rotating CCW at a constant angular speed w (which the rotor chases) N.B.: So there is starting torque