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Design Analysis of High Power Density Additively Manufactured Induction Motor
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 20, 2016 by SAE International in United States
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Induction machines (IM) are considered work horse for industrial applications due to their rugged, reliable and inexpensive nature; however, their low power density restricts their use in volume and weight limited environments such as an aerospace, traction and propulsion applications. Given recent advancements in additive manufacturing technologies, this paper presents opportunity to improve power density of induction machines by taking advantage of higher slot fill factor (SFF) (defined as ratio of bare copper area to slot area) is explored. Increase in SFF is achieved by deposition of copper in much more compact way than conventional manufacturing methods of winding in electrical machines. Thus a design tradeoff study for an induction motor with improved SFF is essential to identify and highlight the potentials of IM for high power density applications and is elaborated in this paper. A traction/propulsion motor application is considered due to its demanding requirements on power density, constant power to speed ratio and efficiency. The motor design space explores different number of poles, slots-per-pole-per-phase and slot fill factors while satisfying the stringent requirements. Then the total weight reduction of active materials in the proposed design is compared with traditional manufacturing methods. The analysis and proposed design validates the power density and efficiency improvement given the increased SFF availed due to additive manufacturing method.
CitationWawrzyniak, B. and Tangudu, J., "Design Analysis of High Power Density Additively Manufactured Induction Motor," SAE Technical Paper 2016-01-2063, 2016, https://doi.org/10.4271/2016-01-2063.
- Rahman M.A., “Advances of interior permanent magnet (IPM) wind generators”, in International Conference on Electrical Machines and Systems, ICEMS. p. 2228-2233. (2008)
- EL-Refaie A.M., “Motors/Generators for Traction /Propulsion Applications: A Review”, in IEEE International Electric Machine & Drives (IEMDC), 490-497, (2011).
- Zhu Z.Q. and Howe D., “Electrical Machines and Drives for Electric, Hybrid, and Fuel Cell Vehicles”, Proceedings of the IEEE, v. 95, pp. 746-765 (2007).
- Chan C.C., “The state of the art of electric and hybrid vehicles”, in Proc. IEEE, 247-275, (2002).
- Eudy L., “Overview of advanced technology transportation”, 2004 Update, in Natl. Renewable Energy Lab., Golden, CO, DOE/GO-10 (2004).
- Rahman, Z., Ehsani, M., and Butler, K., "An Investigation of Electric Motor Drive Characteristics for EV and HEV Propulsion Systems," SAE Technical Paper 2000-01-3062, 2000, doi:10.4271/2000-01-3062.
- Bianchi, N., Bolognani, S., “Design procedure of a vector controlled induction motor for flux-weakening operations”, Industrial Application Society Conference 1997., Vol 1, PP 104-111
- Krishnan, R., ”Review of flux-weakening in high performance vector controlled induction motor drives”, Proceedings of the IEEE International Symposium 1996, vol.2, PP 917-922
- Vagati, A., Fratta, A., Franceschini, G., Rosso, P. “AC motors for high-performance drives: a design-based comparison”, Industry Applications, IEEE Transactions on, 1996, Vol 32, PP 1211-1219
- Tangudu J. K., Jahns T. M., and Bohn T. P., “Design, analysis and loss minimization of a fractional-slot concentrated winding IPM machine for traction applications,” in Proc. IEEE ECCE, Sep. 17-22, 2011, pp. 2236-2243.
- Internal communication with Ricardo Inc. towards developing target motor specifications
- Ranjan R, Tangudu J, “Thermal design of high power-density additively-manufactured induction motors”, IEEE Energy Conversion Congress and Exposition (ECCE), 1325-1331, 2014