D-C series motor speed-torque curves

Author(s): G. W. Heumann
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 November 1949
Volume: 68
Page(s): 949
ISSN (Paper): 0095-9197
DOI: 10.1109/EE.1949.6443214



FOR many years control-circuit designers have used a method of calculating d-c series motor speed-torque curves which was described by A. A. Merrill in the General Electric Review, October 1933. Speed and torque are calculated with the following formulas