BOTTLING COMPANY EQUIPMENT WOUND ROTOR INDUCTION MACHINE DRIVES SPEED AND STALL CONTROL USING EXTERNAL RESISTANCE

Abstract

The bottling company equipment wound rotor induction machine drives speed and stall control using external resistance is presented. A bottling plant is a specialized facility that is fitted with bottling equipment that provides service of filling of bottling of beverages with the product and other services for customers. Stalling is the slowing and stopping of a process bottling plant wound rotor induction machine, which includes power-off, power-on, and accelerated. These have constituted a negative threat to the plant’s smooth operation. A wound-rotor induction machine is an induction machine whose rotor windings are connected through slip rings to external resistance and allows control of the speed and torque characteristics of the machine by resistance adjustment. The rheostat was used for starting, changing, and disconnecting the machine speed by changing the rotor resistance with the rheostat. The bottling plant wound rotor induction machine now operates under constant load conditions when an external variable resistance is applied. Wound rotor induction machines are mainly used in a variety of industrial applications such as crushers, plunger pumps, cranes and hoists, elevators, compressors, and conveyors. Speed variation and stalling issues constitute a challenge and a negative threat to the smooth operation of bottling plant equipment, and the needs call for this negative threat. There was a variation in the bottling company wound rotor induction machine operational speed of as much as 75% as a result of varying the resistance in the rotor circuit. The greater the resistance inserted in the rotor circuit, the lower the speed below the synchronous speed. When the bottling company wound rotor induction machine resistance was adjusted to the lowest value, the speed was less because of the internal resistance of the rotor windings, which is appreciably higher due to winding and rheostat tolerances. The bottling company wound rotor induction machine rotor stalls while operating in an overload condition at low speed. An external resistance was connected to the circuit, and the speed and stalling issues that constitute a challenge and threat to the smooth operation of the bottling plant equipment were eliminated.  The results of the no-load characteristics of the wound rotor induction machine are as follows: average current = 0.62, apparent power = 223 VA, real power = 72w, reactive power = 211 var, and power factor = 0.323. The results of the characteristics of the wound rotor induction machine when the external resistance was set at zero ohms and at a torque of 91 bf.in are as follows: average current = 1.08 AC, apparent power = 378 VA, real power = 290w, reactive power = 242 var, power factor = 0.772, horse power = 0.220, and efficiency = 56.6%. The results of the characteristics of the wound rotor induction machine when the external resistance was set at 16W and at a torque of 91 bf.in are as follows: average current = 1.03 Aac, apparent power = 377 VA, real power = 283w, reactive power = 240 var, power factor = 0.768, horse power = 0.117, and efficiency = 30.8%. With the external resistance in the circuit, the input power supplied not only the actual output power but also the iron, copper, windage, and frictional losses, including the power dissipated by the external resistances. However, below the full speed operation means that the machine is operating at reduced efficiency and horse power. The machine is susceptible to variation in speed as the load changes because it has a high rotor resistance. This is recommended for bottling company engineers, technicians, and operators