An investigation of the dynamic electromechanical coupling effects in machine drive systems driven by asynchronous motors

Szolc, Tomasz; Konowrocki, Robert; Michajłow, Maciej; Pręgowska, Agnieszka

doi:10.1016/j.ymssp.2014.04.004

Cited by 63 publications

(42 citation statements)

References 9 publications

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“…In the case of modern light railway vehicles with independent drive systems the above mentioned instability phenomena do not appear, but the dynamic electromechanical coupling occurs [8]. …”

Section: Phase Velocity Of Wave Propagated In the Rimmentioning

confidence: 99%

On some rotor-dynamical phenomena of high-speed trains

Bogacz

Kurnik

2014

Arch Appl Mech

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The paper is devoted to radial and out-of-plane vibration of railway wheels and to wheelset stability as key elements affecting high-speed vehicle dynamics, noise emission, and safety. In the present study, railway wheel tire is treated as a curved beam with various beam models, and the wheel plates are modeled as Winkler's elastic foundation. New results are presented concerning the influence of the residual stresses on the corrugation and poligonalization of wheels as well as wave propagation in the wheel tire.

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Section: Phase Velocity Of Wave Propagated In the Rimmentioning

confidence: 99%

On some rotor-dynamical phenomena of high-speed trains

Bogacz

Kurnik

2014

Arch Appl Mech

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“…Equations coupling [3,4,5] between the motor and the pump is recorded on the basis of equality of mechanical power absorbed by the pump and generated by the engine:…”

Section: (2)mentioning

confidence: 99%

Pressure control system of the pumping units with frequency-controlled induction motor

Lysenko

2014

2014 Dynamics of Systems, Mechanisms and Machines (Dynamics)

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The ever-increasing demands to the quality of production processes are associated with the pumping of nonviscous liquids, which indicate the need in improving operating conditions of liquid transfer systems with centrifugal pumps, including by means of mathematical modeling. The purpose of the paper is to develop a system for stabilizing the pressure in the calculated point by a scalar frequency-controlling of an induction motor speed, and to study its dynamic operation modes. The following methods are used in the research: theory of the variable frequency drive and electrical machines, methods of operational calculus, theory of centrifugal bladed machines. As a result, a scheme for controlling the pressure of the centrifugal pumping unit in the calculated point by controlling the rotational speed of the induction motor and determining calculated pressure indirectly using the respective models of the centrifugal pump was developed.

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“…Namely, the stepping motors generate more or less severe fluctuation components of driving electromagnetic torques exciting periodic torsional vibrations of driven mechanical systems . Furthermore, each periodic perturbation of the driven machine loading induces torsional oscillations of asynchronous and synchronous motor rotors, which results in an induction of harmonic components of their driving torques …”

Section: Introductionmentioning

confidence: 99%

Semi‐active reduction of vibrations in the mechanical system driven by an electric motor

Michajłow

Jankowski

Szolc

et al. 2017

Optim Control Appl Methods

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Summary In this paper, a semi‐active damping approach is used for reduction of vibrations in a laboratory drivetrain system. The considered drivetrain system is powered by an electric, asynchronous motor at the one side and loaded with a harmonically varying torque on the other side. Here, an influence of electromechanical interaction, i.e., an electromechanical coupling, between the electric motor and the mechanical system has been taken into consideration. The harmonic load signal induces torsional vibrations in the system, which in the steady‐state phase of motion become periodic. The aim of the work is to determine the optimal control function for a semi‐active damping element, leading to vibration reduction and considering only the steady‐state phase of system motion. The optimal control is derived by using a semi‐analytical approach based on the optimal control theory aided with supplementary numerical computations. The proposed methodology is fully general, and it can be directly applied to any type of a periodically oscillating system.

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An investigation of the dynamic electromechanical coupling effects in machine drive systems driven by asynchronous motors

Cited by 63 publications

References 9 publications

On some rotor-dynamical phenomena of high-speed trains

On some rotor-dynamical phenomena of high-speed trains

Pressure control system of the pumping units with frequency-controlled induction motor

Semi‐active reduction of vibrations in the mechanical system driven by an electric motor

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