Monday, 8 July 2013

MMF distributions in a 3-phase ac machine


Under balanced 3-phase sinusoidal excitation of an ac machine, the field space distribution produced by each phase is a sinusoidally distributed pulsating wave centered in its axis. The ABC [RGB] axes are 120o apart. The resultant field (in black) is a traveling wave of constant amplitude moving at a speed which corresponds to the excitation frequency.

No comments:

Post a comment