Experimental research on improving the energy efficiency of industrial-site induction motor drives

This study presents the results of comprehensive experimental research aimed at validating the functionality and practical applicability of a developed theoretical model for improving the energy efficiency of industrial induction motor drives. A non-contact measurement methodology was employed to collect 312 new data points from 13 statistical samples across eight actual operating modes and five no-load modes. The data were statistically analysed using point estimations, confidence intervals, and distribution characteristics. The study examined three energy-saving measures: increasing motor load, replacing oversized motors, and using high-efficiency motors. The experimental results identified Measure 1 (increasing motor load) as the most effective, with an average predicted annual saving of 3684 kWh, followed by Measure 3 (821 kWh) and Measure 2, which proved useful only in limited cases. The findings confirm that the developed adapted theoretical model is operable and applicable in real production environments for energy efficiency optimization.