What are the advantages of three phase induction motors over the other motors?

Answer 1

A Single phase induction motor includes a main winding, an auxiliary winding, a run capacitor, & a subsidiary star device. The auxiliary winding is configured such that the number of turns of the aauxiliary winding through which a current flows, varies according to the operating mode of motor. When the motor starts, the number of turns of the auxiliary winding through which a current flows is reduced there by increasing the start efficiency of the motor. when the motor runs in normal mode, the number of turns of auxiliary winding through which a current flows is increasing there by increasing the operations efficiency of motor

Answer 2

It gives more power as it uses up to 400V from all the three lines.

Answer

It is self-starting, due to a naturally-rotating magnetic field set up by the field windings. And it is lighter and more compact than a single-phase machine of similar power output.

Answer 3

Using three-phase or singe-phase motors depends mainly on what type of electric power supply is available.

Most small properties have a single-phase supply of up to about 24 kW (100 amps). Properties requiring more power can be supplied with a second phase from a three-phase neighborhood supply, or in some cases a full three-phase supply.

Three-phase is required for motors of over 30-40 HP, while most small motors up to 5 HP are single-phase.

Answer 4

the three phase induction motor is smoother, more efficient, less mathematically complex, and less expensive.

Answer 5

3 Phase motors are much simpler in design

they run quieter,

availiable in much bigger sizes.

better efficiency

Answer 6

A 3-phase motor produces a steady torque that does not pulsate. A 3-phase motor starts turning in the right direction when switched on without the need for a separate starting winding.

Answer 7

the followings are the advantages of three phase induction motor over other motors