Synchrounous motor is three phase motor,but its not self
starting .why?
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Answer Posted / saravana babu
let assume the stator field as Ns and Ss..the rotor field as
Nr and Sr..when the given to supply to stator windings,which
cause rmf may occur..assume Ns is repel Nr..as the direction
of rotor is clock wise..(in first half cycle)..in next cycle
Ss is attract Nr(anti clk wise direction)..so the rotor cant
able to rotate in same direction.... so having only low
torque ...so that provides resudual magnetism at
innitialy..(ie dc excitation like alternator)
| Is This Answer Correct ? | 33 Yes | 11 No |
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