Abstract
Traditional means of generating starting and braking torques and limiting currents of induction motors with wound rotors is incorporation of additional resistors in the rotor circuit that are gradually removed during motor acceleration. Simplified electric drives are used in inductive resistance units (chokes) added to the induction motor rotor circuit. The design of the choke and the mechanical characteristics of the choke electric drive are considered. Control of phase speed and torque control is done using thyristor controllers. Functional diagrams and mechanical characteristics are given that provide a clear idea of the properties of the considered drives used in transport and lifting crane gear.
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Borisov, A.M., Drachev, G.I., and Lyakh, N.E., Throttle induction electric drive and the way to calculate its characteristics, Trudy XXVIII Rossiiskoi shkoly Nauka i tekhnologii (Proc. 28th Russian School “Science and Technologies”), Moscow: RAS, 2008, vol. 2, pp. 123–134.
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Borisov, A.M., Drachev, G.I., Lyakh, N.E., et al., A mathematical model of an AC electric drive with nonlinear resistance in rotor’s circuit, Elektroprivody peremennogo toka: Trudy mezhdunarodnoi 14-i nauchno-tekhnich. konf. (Proc. 14th Sci.-Tech. Conf. AC Electric Drives), Yekaterinburg: Ural Federal Univ., 2007, pp. 189–192.
Borisov, A.M., Drachev, G.I., Lyakh, N.E., et al., Throttle induction electric drive with speed control, Izv. Tul’sk. Gos. Univ. Tekhn. Nauki, 2010, part 2, no. 3.
Borisov, A.M., Drachev, G.I., Lyakh, N.E., et al., RF Patent 2311725, Byull. Izobret., 2007, no. 33.
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Original Russian Text © A.M. Borisov, G.I. Drachev, N.E. Lyakh, 2014, published in Elektrotekhnika, 2014, No. 10, pp. 44–48.
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Borisov, A.M., Drachev, G.I. & Lyakh, N.E. Revamping the crane electric drive. Russ. Electr. Engin. 85, 630–633 (2014). https://doi.org/10.3103/S1068371214100022
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DOI: https://doi.org/10.3103/S1068371214100022