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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(a) Phase A current vs. time for the modified Emerson Electric motor, T = 0.35 Nm, n = 4400 rpm, 1 div = 0.5 A, 1 div = 500 µs; (b) phase A current vs. time for the prototype motor, T = 0.35 Nm, n = 4400 rpm, 1 div = 0.5 A, 1 div = 500 µs.