Increase effectiveness of reversible braking mode realization of the wound-rotor induction motor
DOI:
https://doi.org/10.15587/1729-4061.2015.36670Keywords:
regulation, motor, pulse, energy efficiency, braking, recuperation, slipAbstract
The aim of the work is to increase performance of the wound-rotor induction motor (WRIM) in reverse braking mode by modified pulse control system (PCS), at which the saving the value of the WRIM operating current at the reverse moment as well as energy efficiency of electric drive in the process of its braking are provided.
For the purpose to perform investigation of realizing reverse braking mode for WRIM with modified PCS, with the help of MatLAB software (structural tools of Simulink), the simulation model for the electromagnetic processes in the electric drive is developed. Using the modified PCS for the WRIM with insertion of series resistance in the circuit of rectified rotor current at the reverse moment will prevent rising stator and rotor currents of the WRIM up to its short-circuit value. The values of the phase currents save at the level of the operating values, which in turn will enable to avoid abrupt change of the WRIM torque at the reverse moment. The modified PCS for the WRIM provides recuperation of slip energy as static and dynamic characteristics form at simple enough implementation circuit that ensures its reliability.
Modified PCS for the WRIM can be recommended for the modernization of electric drives of crane-positioning mechanisms.
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Copyright (c) 2015 Михаил Игоревич Коцур, Игорь Михайлович Коцур, Александр Викторович Близняков
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