Simple cost model for EV traction motors

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A simple cost model has been developed that allows the calculation of the OEM cost of electric traction motors of three different types, normalized as a function of power in order to accommodate different power and size. The model includes enough information on the various elements integrated in the motors to allow analysis of individual components and to factor-in the effects of changes in commodities prices. A scalable cost model for each of the main components of an electric vehicle (EV) is a useful tool that can have direct application in computer simulation or in parametric studies. For the cost ... continued below

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17 p.

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Cuenca, R.M. February 1, 1995.

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Description

A simple cost model has been developed that allows the calculation of the OEM cost of electric traction motors of three different types, normalized as a function of power in order to accommodate different power and size. The model includes enough information on the various elements integrated in the motors to allow analysis of individual components and to factor-in the effects of changes in commodities prices. A scalable cost model for each of the main components of an electric vehicle (EV) is a useful tool that can have direct application in computer simulation or in parametric studies. For the cost model to have wide usefulness, it needs to be valid for a range of values of some parameter that determines the magnitude or size of the component. For instance, in the case of batteries, size may be determined by energy capacity, usually expressed in kilowatt-hours (kWh), while in the case of traction motors, size is better determined by rated power, usually expressed in kilowatts (kW). The simplest case is when the cost of the component in question is a direct function of its size; then cost is simply the product of its specific cost ($/unit size) and the number of units (size) in the vehicle in question. Batteries usually fall in this category (cost = energy capacity x $/kWh). But cost is not always linear with size or magnitude; motors (and controllers), for instance, become relatively less expensive as power rating increases. Traction motors, one of the main components for EV powertrains are examined in this paper, and a simplified cost model is developed for the three most popular design variations.

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17 p.

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OSTI as DE95013371

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  • 2. world car conference, Riverside, CA (United States), 22-24 Jan 1995

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  • Other: DE95013371
  • Report No.: ANL/ES/CP--84476
  • Report No.: CONF-950186--3
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 79757
  • Archival Resource Key: ark:/67531/metadc742528

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Office of Scientific & Technical Information Technical Reports

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  • February 1, 1995

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • Dec. 11, 2015, 6:35 p.m.

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Cuenca, R.M. Simple cost model for EV traction motors, article, February 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc742528/: accessed October 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.