COMPUTER SIMULATION OF INTERMITTENT CURRENT MODE OF DC ELECTRIC DRIVE WITH THREE-PHASE CONTROLLED RECTIFIER

Authors

  • J. V. Kovalova O.M. Beketov National University of Urban Economy in Kharkiv, Ukraine

DOI:

https://doi.org/10.20998/2074-272X.2018.4.03

Keywords:

thyristor rectifier, voltage pulsations, angle of control, intermittent current

Abstract

Introduction. The mode of intermittent current for DC motor with three-phase thyristor rectifier appears in the idle intervals of some mechanisms. Active and passive filters reduce the variable component of the rectified voltage. The capacitance of the capacitors filter is determined by the effective value of the variable component of the rectified voltage. Problem. Necessity of developing an analytical method for calculating the effective value of the variable component of the rectified voltage in the intermittent current mode, taking into account three parameters: the control angle, the electromagnetic time constant of the armature circuit and the load current. Purpose. To determine the dependence of the effective value of the variable component of the rectified voltage for three parameters in theintermittent current mode. Methodology. The effective value of the variable component of the rectified voltage is suggested to be determined through the voltage pulsations factor as the ratio of the effective value of the variable component of the rectified voltage to its constant component. The dependence of the pulsations factor from the parameters of the mode is determined using computer simulation of the mode for intermittent current. Results. The computer model is developed in the software package Simulink, which allows to change each parameter of the mode separately while stabilizing the other two. Numerical dependences of the pulsation factor on each parameter are obtained. The analytical dependence of the voltage pulsations factor on three influencing values was obtained by the method of experiment planning. Originality. For the first time, method has been developed for calculating pulsation factor of the rectified voltage and calculating the effective value of the variable component in the mode of intermittent currents, taking into account three parameters. Practical value. The proposed method will allow to rationally determine the capacity of the capacitors of active and passive filters and increase the efficiency of electromechanical power conversion by reducing the variable component of the rectified voltage.

References

1. Afonso J., Couto C., Martins J. Active filters with control based on p-q theory. IEEE Industrial Electronics Society Newsletter, 2000, vol.47, no.3, pp. 5-10.

2. Soares V., Verdelho P., Marques G.D. An instantaneous active and reactive current component method for active filters. IEEE Transactions on Power Electronics, 2000, vol.15. no.4, pp. 660-669. doi: 10.1109/63.849036.

3. Kovalova Y.V. Determination of the ripple factor of the voltage of single-phase three sided rectifier. Lighting engineering and power engineering, 2016, no.3, pp. 4-7.

4. Sen'ko V.I. Sylova elektronika [Power electronics]. Kiev, IZMN Publ., 1999. 214 р. (Ukr).

5. German-Galkin S.G. Komp'iuternoe modelirovanie poluprovodnikovykh sistem v MATLAB 6.0 [Computer model of the semiconductor systems in MATLAB 6.0]. Saint Petersburg, CORONA Publ., 2007. 320 р. (Rus).

6. Vlasov K.P. Metody issledovanii i organizatsiia eksperimentov [The method of investigation and organization experiments]. Kharkiv, Gumanitarnyi Center Publ., 2002. 256 р. (Rus).

Published

2018-08-13

How to Cite

Kovalova, J. V. (2018). COMPUTER SIMULATION OF INTERMITTENT CURRENT MODE OF DC ELECTRIC DRIVE WITH THREE-PHASE CONTROLLED RECTIFIER. Electrical Engineering & Electromechanics, (4), 20–23. https://doi.org/10.20998/2074-272X.2018.4.03

Issue

Section

Electrotechnical complexes and Systems