Industrial plant consists of 4-motors and transformer. Two induction motors and two synchronous motors are installed with the following data:
The slip range of induction motors is between: s = 0.03-0.05
The induction motor at rated load power factor is between PF = 0.75-0.85 lagging. The induction motor rated sizes are available of 100 150 200 & 250 hp.
The efficiency of the induction motors is between 80%-90%
The synchronous motor rated sizes are available of 100 150 200 &250 kW.
The synchronous motor at rated load power factor is between PF = 0.80 lagging-0.80 leading. The efficiency of the synchronous motors is between 85%-92%
The motor poles are available of 2 or 4. The voltage source is VLL = 480V 60Hz.
The total load torque of the plant is 2900 N.m.
The total power factor PF at the secondary side of the transformer is 1 = PF = 0.95 lagging.
Design the motor specification such as size pole numbers slip efficiency and PF based on the data available above. (note: Motors from each type cannot be the same rating)
Select proper transformer which can handle the total load taking to consideration 70% of load factor plus losses.
Show all your calculations in detail (power in all forms currents speeds voltages etc)
Typing report should be submitted.Transformer
480V 60Hz
M1
M2
M3
M4
Induction
Induction
Synchronous
Synchronous
Motor
Motor
Motor
Motor
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