SOLUTION

Squirrel cage Induction Motor drive can be used for Textile Industry.

Textile Industry:-

The textile mill has various processes like ginning, spinning, and looms.

The ginning means the separation of seeds from cotton. The process requires standard starting torque and standard overload capacity, at a constant speed. No speed control is required. The operation is at a constant speed. The standard squirrel cage induction motor is the proper choice.

The twisting to produce continuous yarn of sufficient strength is called the spinning process. The moderate starting torque and high overload capacity are necessary. Acceleration must be constant or uniform so that there is no breakage of the thread. Since the Induction motor is almost a constant speed motor hence the operation is at a constant speed, therefore, no speed control is necessary but two-speed motors are preferred. Normally a 4 pole to 6 pole squirrel cage induction motor is used.

Before the yarn is actually woven, it is made into a uniform layer. The process is called weaving and is done on a loom. This requires 2 to 2.3 times rated torque at the start. There are frequent starts and stops. But the operation is at a constant speed and no speed control is necessary. The totally enclosed high torque squirrel cage induction motors are preferred. The motors are usually of 6 or 8 poles. The ratings of the motors for light fabrics such as cotton silk. rayon etc are 0.37, 0.55 to 1.5 kW while for wool it is 2kW to 3.7 kW.