Industrial technologies, mobility, and energy efficiency of electric traction of rail transport

Burkov, A. T.; Blazhko, L. S.; Иванов, Игорь Анатольевич

doi:10.3103/s1068371216050059

Cited by 12 publications

(1 citation statement)

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“…The efficiency of electric drives is determined primarily by the efficiency of motors, the power loss of which depends not only on the resistance torque, which directly affects the values of stator and rotor currents but also on the parameters of the motor substitution scheme, rotor speed, power source parameters, motor power, modes of operation, operating conditions, etc. Nowadays traction electric drive has, as a rule, three variants of asynchronous motor control systems-scalar control system, a vector control system, and a direct torque control system [1,2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Modeling of energy-efficient direct torque control system for traction induction motor

Евстафьев

Пугачев

2023

E3S Web Conf.

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A brief analysis of existing control systems for traction electric drives with induction motors has been carried out, as a result of which it has been established that vector control and direct torque control systems are the most promising. The comparative characteristic of these control systems according to different parameters of electric drive quality has shown that in energy-saving algorithms it is appropriate to use the systems of direct torque control. The work aims to simulate the electric drive with a direct torque control system, which provides the reduction of power losses in an asynchronous motor. The value of the stator winding power factor is chosen as a control action. The calculation and functional dependences between the main parameters of the control system and the induction motor are synthesized, the fulfillment of which allows reducing duce power losses. The functional diagram of the electric drive with an energy-efficient control system is given. The hardware of this control system does not differ from the currently used frequency converters. In the power channel of the frequency converter, a three-level autonomous voltage inverter with locking diodes is used. The results of modeling for electric drive with 11 kW motor, analysis of which showed the adequacy of the developed model and performance of the synthesized control system, the efficiency of the electric drive with energy-efficient control system increases to 18% compared with the classical direct torque control system.

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Section: Introductionmentioning

confidence: 99%

Modeling of energy-efficient direct torque control system for traction induction motor

Евстафьев

Пугачев

2023

E3S Web Conf.

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Analysis of Traffic Accidents and Development of Means to Improve Railway Transport Safety

Akhtyamov

Титова

2022

International Scientific Siberian Transport Forum TransSiberia - 2021

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Improving the energy efficiency of electric drives for auxiliary units of traction rolling stock

Титова

Евстафьев

Пугачев

2021

J. Phys.: Conf. Ser.

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The review of technical solutions and schematic characteristics of auxiliary drives for traction vehicles has shown that the most rational variant is an electric drive with an induction machine. Given the operating modes of the auxiliary drives and the share of their power consumption in the total locomotive power, the task of using scalar control systems for induction machines becomes relevant. Based on a mathematical model describing the dynamic energy conversion processes in the T-shape substitution circuit of an induction motor, taking into account stator steel losses and current displacement effects in the rotor winding and saturation along the main magnetic path, possibilities for reducing stator current have been investigated. In order to improve the energy efficiency of electric drives two variants of control system have been proposed. One based on search method of self-tuning to the stator current minimum and the other - on maintaining the power factor of induction motor at the level that ensures equality of active and reactive components of stator current. The hardware and software requirements for implementing control systems have been analysed. Modelling using Matlab has shown that both control systems work - power loss reduction can be as low as 50% and as high as 60% in certain modes.

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Industrial technologies, mobility, and energy efficiency of electric traction of rail transport

Cited by 12 publications

References 0 publications

Modeling of energy-efficient direct torque control system for traction induction motor

Modeling of energy-efficient direct torque control system for traction induction motor

Analysis of Traffic Accidents and Development of Means to Improve Railway Transport Safety

Improving the energy efficiency of electric drives for auxiliary units of traction rolling stock

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