please help me to my assignment...... thanks...
2006-08-14 12:06:26 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Three phase motors have a rotor and a stator. The rotor is made of heavy copper wires or bars on a laminated core. The stator is made of multiple windings that induce current into these bars to create the magnetic field. The stator is wound around a laminated core near the outside of the motor. The three phase current supplied to it creates a moving magnetic field that the rotor follows to create rotation. Depending on spacing of the windings the motor can be wound to perform best at a constant speed or multiple speeds depending on the frequency of the line.
Three Phase motors are the most economical way of delivering power from about 1 hp to thousands.
2006-08-15 05:52:09 · answer #1 · answered by Buffertest 3 · 1⤊ 0⤋
Three Phase Motor Definition
2016-12-10 19:37:34 · answer #2 · answered by ? 4 · 0⤊ 0⤋
It depends on the type of single phase motor you use, and if it requires any special starting arrangement for switching a start capacitor or starter winding for example. If it does not require any special starting arrangement and can be switched directly on to the single phase mains supply you could use a 3 phase switch and use only two poles of the switch, one for the live and the other for the neutral. However you must check the full load current of the motor to ensure it is equal to or below the rating of the switch and any overload protection for the motor is suitably rated for the motor you plan to use.
2016-03-17 00:06:48 · answer #3 · answered by ? 4 · 0⤊ 0⤋
A single phase motor (common household current) provides maximum power (voltage) to a motor 120 times a second. (60 Hz swings to maximum positive and maximum negative 120 times per second) A three phase motor gets the maximum juice 360 times a second by combining three of the single phases, in phase, evenly spaced - much more efficient.
2006-08-14 12:21:52 · answer #4 · answered by LeAnne 7 · 1⤊ 0⤋
Well normaly with AC power you get the within a phase starting from 0 volts 90DEG. + then via 0 deg.going to -90 deg the again + then MInus so you get 360 degrees 1cycle if you ad power meaning another phase (winding) you get more power out of the Motor because you reduce the cycle Time and add Power
I hope that helps you other People may explain it better.
Take care
2006-08-14 12:26:16 · answer #5 · answered by Anonymous · 0⤊ 1⤋