A 2-MW Motor and ARCP Drive for High-Speed Flywheel

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Thelen, R.F.
Gattozzi, A.L
Wardell, D
Williams, A.S.

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A high-speed induction motor and soft-switching electronic drive are selected to transfer energy between a flywheel and the other power components of prototype hybrid locomotive power system. The motor-generator operates in direct coupling at 14,000 rpm (233 Hz) with the composite flywheel. The motor drive rating is 2 MW (2600 hp) over the operating frequency range of 125 to 250 Hz. The power-frequency range and harmonic heating considerations have lead to a auxiliary resonant commutation pole (ARCP) soft-switching design. The drive and motor have been tested over the full speed range. Unique requirements of energy storage and transfer are also presented.


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R.F. Thelen, A.L. Gattozzi, D. Wardell, and A.S. Williams, “A 2-MW motor and ARCP drive for high-speed flywheel,” Twenty-second Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2007), Anaheim, California, U.S.A., February 25-March 1, 2007, pp. 1690-1694.