Murtaza Ali Khooharo,Muhammad Mujtaba Shaikh,Ashfaque Ahmed Hashmani,



Energy-efficient motors,energy conservation,payback,cost saving,energy saving,


As the most energy-intensive machines on the planet, induction motors are the subject of an ongoing study to increase their effectiveness. In this respect, new energy-efficient motors (NEEMs) are being developed. For increasing energy conservation, motors with efficiencies considerably higher than traditional standard motors (TSMs) and energy-efficient motors (EEMs) have been suggested. NEEMs have the potential to save a significant quantity of energy as well as operating costs. A comparative study is conducted in this paper to show how much energy and cost can be saved if TSMs in various industries in Pakistan are replaced with NEEMs, as well as their payback period. A data sample of 23 motors of different ratings has been collected in this pilot study and 90 percent confidence limits are calculated using a t-distribution. The energy conservation benefits of the NEEMs are found encouraging


I. Boglietti, A. Cavagnino, M. Lazzari, and M. Pastorelli, “International standards for the induction motor efficiency evaluation: a critical analysis of the stray-load loss determination,” in 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003., Oct. 2003, vol. 2, pp. 841–848 vol.2. doi: 10.1109/IAS.2003.1257626.
II. De Almeida, J. Fong, C. U. Brunner, R. Werle, and M. Van Werkhoven, “New technology trends and policy needs in energy efficient motor systems – A major opportunity for energy and carbon savings,” Renew. Sustain. Energy Rev., vol. 115, p. 109384, Nov. 2019, doi: 10.1016/j.rser.2019.109384.

III. J. Memon and M. M. Shaikh, “Confidence bounds for energy conservation in electric motors: An economical solution using statistical techniques,” Energy, vol. 109, pp. 592–601, Aug. 2016, doi: 10.1016/

IV. T. De Almeida, F. Ferreira, D. ISR, and E. Electrotecnica, “Efficiency testing of electric induction motors,” ISR Dep Eng Electron. Univ. Coimbra Polo, vol. 2, p. 3030, 1997.

V. T. de Almeida, F. J. T. E. Ferreira, and G. Baoming, “Beyond Induction Motors—Technology Trends to Move Up Efficiency,” IEEE Trans. Ind. Appl., vol. 50, no. 3, pp. 2103–2114, May 2014, doi: 10.1109/TIA.2013.2288425.

VI. Energy Efficient Motor Market by Efficiency Level,Type, Application | COVID-19 Impact Analysis | Marketsand Markets TM.” (accessed Dec. 24, 2021).

VII. Energy-Efficient Motors: Are They Worth the Cost?,” Facilitiesnet.–9594 (accessed Dec. 24, 2021).

VIII. F. Abrahamsen, F. Blaabjerg, J. K. Pedersen, P. Z. Grabowski, and P. Thogersen, “On the energy optimized control of standard and high-efficiency induction motors in CT and HVAC applications,” IEEE Trans. Ind. Appl., vol. 34, no. 4, pp. 822–831, Jul. 1998, doi: 10.1109/28.703985.

IX. G. Pellegrino, A. Vagati, B. Boazzo, and P. Guglielmi, “Comparison of Induction and PM Synchronous Motor Drives for EV Application Including Design Examples,” IEEE Trans. Ind. Appl., vol. 48, no. 6, pp. 2322–2332, Nov. 2012, doi: 10.1109/TIA.2012.2227092.

X. Md. A. Rahman, “History of interior permanent magnet motors [History],” IEEE Ind. Appl. Mag., vol. 19, no. 1, pp. 10–15, Jan. 2013, doi: 10.1109/MIAS.2012.2221996.

XI. Motor Comparison: Standard vs. Energy Efficient,” Facilitiesnet.–9591 (accessed Dec. 24, 2021).

XII. Motor Efficiency – an overview | ScienceDirect Topics.” (accessed Sep. 23, 2021).

XIII. Motors and Generators.” (accessed Dec. 24, 2021).
XIV. N. Corporation, “IPM (Interior Permanent Magnet),” Nidec Corporation. (accessed Feb. 03, 2022).

XV. National Energy Efficiency & Conservation Authority.” (accessed Dec. 24, 2021).

XVI. NEMA MG 1 Motor and Generators Standard Now Available for Free Digital Download.” (accessed Dec. 24, 2021).

XVII. Pakistan Launches First Efficiency Policy for Electric Motors,” CLASP. (accessed Dec. 24, 2021). TECHNICAL NOTE No. 32 IPM TECHNICAL NOTE,” p. 74.

XVIII. R. Mugalimov and A. Mugalimova, “Technology for Reconstruction of traditional induction motors to energy saving variants,” Russ. Internet J. Ind. Eng., no. 1, Art. no. 1, Sep. 2013, doi: 10.24892/RIJIE/20130109.

XIX. R. Turconi, A. Boldrin, and T. Astrup, “Life cycle assessment (LCA) of electricity generation technologies: Overview, comparability and limitations,” Renew. Sustain. Energy Rev., vol. 28, pp. 555–565, Dec. 2013, doi: 10.1016/j.rser.2013.08.013.

XX. S. Bolognani, S. Calligaro, R. Petrella, and F. Pogni, “Flux-weakening in IPM motor drives: Comparison of state-of-art algorithms and a novel proposal for controller design,” in Proceedings of the 2011 14th European Conference on Power Electronics and Applications, Aug. 2011, pp. 1–11.

XXI. S. Hu, D. Yan, S. Guo, Y. Cui, and B. Dong, “A survey on energy consumption and energy usage behavior of households and residential building in urban China,” Energy Build., vol. 148, pp. 366–378, Aug. 2017, doi: 10.1016/j.enbuild.2017.03.064.

XXII. T. Ohnishi and N. Takahashi, “Optimal design of efficient IPM motor using finite element method,” IEEE Trans. Magn., vol. 36, no. 5, pp. 3537–3539, Sep. 2000, doi: 10.1109/20.908891.

XXIII. Z. Wu and X. Xia, “Optimal switching renewable energy system for demand side management,” Sol. Energy, vol. 114, pp. 278–288, Apr. 2015, doi: 10.1016/j.solener.2015.02.001.

XXIV. Z. Zhang, “Analysis of Reluctance Torque in Interior Permanent Magnet Synchronous Machines With Fractional Slot Concentrated Windings,” in 2019 4th International Conference on Intelligent Green Building and Smart Grid (IGBSG), Sep. 2019, pp. 158–163. doi: 10.1109/IGBSG.2019.8886289.

View Download