Design and Performance Analysis of Single-Phase Squirrel-Cage Induction Machine with High Efficiency

Abstract

Single-Phase Induction Machines (SPIMs), extensively employed in industry and homes, offer significant energy-saving potential. New regulations, starting from July 1, 2023, obligate that SPIMs with a rated power between 0.12 kW and 0.75 kW must provide to IE2 efficiency standards (per (EU)2019/1781 and (EU)2021/341). This paper aims designing single-phase squirrel-cage induction machine with high efficiency (IE2). 0.55 kW a SPIM is considered for the design. Initial design specifications, encompassing dimensioning, slot-pole selection, parametric optimization of stator and rotor geometry, and finite element analyses, validate the SPIM design. Design parameters, such as slot opening, end-ring length, and rotor bar width, are analyzed for their impact on performance metrics including efficiency, power factor, starting current, and starting torque. The analysis results indicate a power factor of 0.98 and an efficiency of 77.8% at full load. Using the design data, the SPIM is then prototyped and subjected to testing in accordance with the IEC 60034-2-1:2014 standard for rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests. The performance analysis of the SPIM is conducted at an ISO/EN 17025 accredited R&D Laboratory, achieving an efficiency of 80.1%. This research highlights the potential of SPIMs to meet IE2 efficiency standards, offering significant energy savings in various applications.

Keywords

• Single-Phase Induction Machine
• IE2 Efficiency
• IEC 60034-2-1:2014

References

1. [1] I. D. Chasiotis and Y. L. Karnavas, “On the design and manufacturing of small single phase induction motors toward super premium efficiency standards,” presented at the 2020 Int. Conf. on Electrical Machines (ICEM), Gothenburg, Sweden, pp. 2321-2327, 2020.
2. [2] Y. L. Karnavas, I. D. Chasiotis, “Design and manufacturing of a single-phase induction motor:A decision aid tool approach”, Int. Tran Electr Energ Syst. 27:e2357, 2017.
3. [3] D. Liang, V. Zhou, "Recent market and technical trends in copper rotor for high-efficiency induction motors", in Proc. of 2018 Int. Power Electronic Conf. (IPEC-Niigata 2018- ECCE Asia), Niigata, Japan, May 20-24, 2018.
4. [4] Udroiu, Nicoleta-Alina, and Carmen Georgeta Nicolae. "POSSIBILITIES TO REDUCE CO 2 EMISSIONS BY USING ELECTRIC MOTORS WITH HIGH ENERGY EFFICIENCY." Scientific Papers. Series D. Animal Science 65.1 (2022).
5. [5] T. Lubin, S. Mezani and A. Rezzoug, "Analytic Calculation of Eddy Currents in the Slots of Electrical Machines: Application to Cage Rotor Induction Motors," IEEE Transactions on Magnetics, vol. 47, no. 11, pp. 4650-4659, Nov. 2011.
6. [6] I. Chasiotis, Y. Karnavas, F. Scuiller, “Effect of rotor bars shape on the single-phase induction motors performance: An analysis toward their efficiency improvement”, Energies, 10.3390/en15030717, 15, 3, (717), 2022.
7. [7] Gui-Yu Zhou and Jian-Xin Shen, "Current harmonics in induction machine with closed-slot rotor," 2015 IEEE 2nd Int. Future Energy Electronics Conf. (IFEEC), Taipei, Taiwan, 2015.
8. [8] Lee KS, Ho Lee S, Park JH, Kim JM, Choi JY. “Experimental and analytical study of single-phase squirrel-cage induction motor consideringend-ring porosity rate,” IEEE Trans Magnet. 53(11) pp. 1-4. 2017.

9. [9] D. Sharma, R. K. Saini, and S. Pathania, “Design, analysis and selection of electric and magnetic loading for different rating of squirrel cage induction motors by using matlab gui software,” Int. J. Innovative Res. Elec. Electron. Instrum. Control Eng., vol. 3, no. 4, pp. 20-22, Apr. 2015.
10. [10] S.H. Choudhury, M.A. Uddin, N. Hasan, M. S. Alam, M. F. I. Bashar, “Impact of skin effect for the design of a squirrel cage induction motor on its starting performances”, International Journal of Engineering Science and Technology (IJEST), vol. 4, no.01 Jan. 2012. pp:362-366.
11. [11] C. Mademlis, I. Kioskeridis, and T.Theodoulidis, “Optimization of single-phase induction motors-Part I: Maximum energy efficiency control,” IEEE Trans. Energy Convers., vol. 20, no. 1, pp. 187–195, Mar. 2005.
12. [12] S. Shekhar, S. Kumar, S.K. Anand, S.K. Duve, P.D. Bharadwaj, “Design and programming for single phase induction motor”, International Journal of Engineering Science and Computing, April 2016.
13. [13] T.Z. Aung , E.E Cho, “Design calculation of single-phase permanent slip capacitor induction motor used in washing machine”, IRE Journals, vol. 3, no. 2, Aug 2019, pp:206-213.
14. [14] M. Farasat, A. M. Trzynadlowski, M. S. Fadali, “Efficiency improved sensorless control scheme for electric vehicle induction motors”, IET Electr. Syst. Transp., vol. 4, no. 4, pp. 122–131, 2014.