Energy saving is one of the most important factor for industrial and commercial applications. In the industries, Induction motors are the mostly preferred due to their reliability, robustness, price and rugged construction. The largest percentage of consumed energy in industrial is consumed by induction motors. So, Energy conservation in induction motor drive leads to reduction in power consumption and electricity cost. This paper describes energy saving technique for squirrel cage induction motor. The energy saving is achieved by controlling the voltage applied to the stator winding using the three phase AC voltage controller. The simulation verifications are done in MATLAB/Simulink. The results show that the proposed scheme gives rise to the considerable energy-savings
The rated efficiency of an induction motor is high when it operates under the full load. In general, the rated efficiency is larger than 75%. Although, the operating efficiency of the induction motor drive system will be low if an induction motor is operating at light loads or does not selected correctly. So, that the improvement in the energy efficiency of induction motor drives refers to huge energy saving