Abstract
The relevance of the implementation of electric drives with vector-control systems for asynchronous motors in traction rolling stock is shown. A comparative assessment of electric drives with algorithms consisting in a pulse-width and space-vector voltage modulation of an autonomous inverter in the structure of a vector-control system for an asynchronous motor is presented. A vector-control system oriented to rotor-flux linkage has been developed, and its functional diagram is presented. A mathematical model and functional diagram of the control system for an two-level autonomous voltage inverter that implements space-vector modulation algorithms has been developed. The developed circuits and topologies are assembled using the MATLAB/Simulink software package. According to known mathematical relationships that have been earlier confirmed, a control system with a two-level voltage source inverter implementing a pulse-width type of modulation has also been assembled. The results of simulation are presented for a 110-kW asynchronous motor electric drive, the mathematical model of which takes into account power losses occurring in the stator and rotor windings, as well as the losses in the stator magnetic core, and typical nonlinearities connected with saturation and resistance. Analysis of the energy efficiency and quality parameters of an electric drive depending on the asynchronous motor control system and rated power has been performed.
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Translated by O. Polyakov
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Inkov, Y.M., Kosmodamianskiy, A.S., Pugachev, A.A. et al. Comparative Assessment of Electric Drives with a Vector-Control System for Asynchronous Motors. Russ. Electr. Engin. 93, 570–575 (2022). https://doi.org/10.3103/S1068371222090085
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DOI: https://doi.org/10.3103/S1068371222090085