DYNAMIC REGIMES OF ASYNCHRONOUS MOTORS WITH CONCATENATED CAPACITORS
Keywords:asynchronous motor, compensation of reactive power, starting characteristics, resonance, capacitors, subharmonіc oscillations
AbstractPurpose. Development of mathematical model for calculation of starting modes of asynchronous motor connected in series with capacitors. Method. Mathematical modeling of dynamic modes of asynchronous motors with lateral capacitor compensation of reactive power. Results. The calculation algorithm and results of mathematic modeling of processes during starting modes of asynchronous motor feeding from the network through capacitors connected in series are presented. It is shown that for some values of capacitance the self-excitation processes and subharmonic oscillations can appear. Scientific novelty. Mathematic modeling and research of processes in asynchronous motor under its feeding through capacitors is carried out for the first time. The calculation algorithm is based on the mathematical model of asynchronous motor with high level of adequacy, which takes into account the magnetic core saturation and the current displacement in limbs of the rotor. Practical implication. Developed mathematical model makes it possible to investigate the possibility of self-excitation modes appearing in condition of their feeding from line with lateral compensation of reactance in order to avoid the negative effects typical for them.
Golovan А.Т., Zhang Chen-Shen. Mechanical swinging asynchronous motors with a series connection capacitors. Elektrichestvo – Electricity, 1962, no.10, pp. 12-15. (Rus).
Dancis J.B., Zulov G.М. Emkostnaja kompensacija reaktivnyh nagruzok moshhnyh tokopriemnikov promyshlennyh predprijatij [Capacity indemnification of reactive power for powerful consumers of industrial enterprises]. Мoscow, Energija Publ., 1980. 176 p. (Rus).
Rydnickyj V.G., Bondarenko V.V. Analysis of the occurrence of self-excited of asynchronous motors with a series connection capacitors in the device voltage and reactive power control. Elektromashinostoenie i elektrooborudovanie – Electrical Engineering and Electric Equipment, 2006, no.66, pp. 232-233. (Ukr).
Filc R.V. Matematicheskie osnovy teorii elektromehanicheskih preobrazovatelej [Mathematical foundations of electromechanical transducers theory]. Кyiv, Naukova Dumka Publ., 1979. 208 p. (Rus).
How to Cite
Copyright (c) 2015 V. S. Malyar, V. S. Maday, I. A. Dobushovska
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.