A three phase synchronous motor of 50Hz, has the stator winding with pitch angle of 15O, distribution angle of 20O, with number of slots per pole per phase of 10, and magnetic field flux density of 90mWeb/cm2 spread over an area of 2 cm2. The number of turns in the stator winding is 1500. Calculate, i. Fundamental component of EMF induced in stator winding. ii. 2th order (harmonic) component of EMF induced in stator winding. iii. 4th order (harmonic) component of EMF induced in stator winding. iv. RMS value of the EMF induced in stator winding.

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Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.