OPTIMIZATION OF TIMES OF RUNNING AND BRAKING OF POSITION FREQUENCY-REGULATED ASYNCHRONOUS ELECTRIC DRIVES
DOI:
https://doi.org/10.15588/1607-6761-2017-1-7Keywords:
asynchronous motor, frequency control, positioning, optimal energy-saving control, graphoanalytical techniqueAbstract
Purpose. Obtaining analytical dependencies for calculating the optimum speedup and speeddown times for a frequencycontrolled asynchronous motor that minimize the main electromagnetic energy losses of the engine for small displacements of its shaft, and also the estimation of the influence of these optimal speedup and speeddown times on the value of the main electromagnetic energy losses in the frequency-controlled asynchronous motor various types of engine tachograms (with linear and parabolic forms or hyperbolic sine form).Methodology. Methods of optimal control and simulation modelling.
Findings. Analytical dependencies are obtained and a graphoanalytical method proposed for calculating the optimum speedup and speedown times for the frequency-controlled asynchronous motor that minimizes the main electromagnetic energy losses of the motor with small displacements of its shaft. The effect of these optimal speedup and speeddown times on the value of the main electromagnetic energy losses in the frequency-controlled asynchronous motor under different types of motor tachograms (with linear and parabolic forms or the form of the hyperbolic sine) are estimated.
Originality. For the first time, analytical dependencies are obtained for calculating the optimal speedup and spedddown times for small displacements of the frequency-controlled asynchronous motor, by which the electromagnetic losses in the motor is minimized. For the first time, a graphoanalytical method developed to determine these optimum speedup and speeddown times for the frequency-controlled asynchronous motor when was working out small displacements.
Practical value. An approach to energy saving in positional frequency-controlled asynchronous electric drives is proposed, by optimizing their speedup and speeddown times, which allows in practice without significant capital costs to reduce power losses in these electric drives
References
Shreyner, R. T., Dmitrenko, YU. A. (1982). Optimal’noye chastotnoye upravleniye asinkhronnymi elektroprivodami. Kishinev: Shtiintsa, 224.
Polyakov, V. N. Shreyner, R. T. (2006). Ekstremal’noye upravleniye elektricheskimi dvigatelyami, Yekaterinburg: UGTU, UPI, 420 s.
Sandler, A. S., Sarbatov, R. S. (1974). Avtomaticheskoye chastotnoye upravleniye asinkhronnymi dvigatelyami. Moscow: Energiya, 328.
Kostenko, M. P. (1949). Elektricheskiye mashiny. Spetsial’naya chast’. Sankt-Peterburg: Gosenergotizdat, 708.
Pivnyak, G. G., Volkov, A. V. (2006). Sovremennyye chastotno-reguliruyemyye asinkhronnyye elektroprivody s shirotno-impul’snoy modulyatsiyey. Dnepropetrovsk: Natsional’nyy gornyy universitet, 470.
Volkov A. V., Kolesnikov A. A. (2013). Energosberegayushcheye upravleniye skorost’yu chastotno-reguliruyemogo asinkhronnogo dvigatelya v puskotormoznykh rezhimakh, Elektrotekhnika, 5, 2–9.
Volkov, V. A. (2015). Raschet optimal’nykh takhogramm razgona i tormozheniya chastotno-reguliruyemogo asinkhronnogo dvigatelya, Elektrotekhnika ta elektroyenergetika, 2, 55–64. DOI: http://dx.doi.org/10.15588/1607-6761-2015-2-8
Petrov, YU. P. (1961). Optimal’noye upravleniye elektroprivodom. Moscow, Sankt-Peterburg: Gosenergoizdat, 187.
Petrov, YU. P. (1971). Optimal’noye upravleniye elektroprivodom s uchetom ogranicheniy po nagrevu. Sankt-Peterburg: Energiya, 144.
Volkov, V. A. (2016). Optimal’noye i kvazioptimal’noye energosberegayushcheye upravleniye polozheniyem chastotnoreguliruyemogo asinkhronnogo dvigatelya, Elektrotekhnika ta elektroyenergetika, 1, 25–34. DOI: http://dx.doi.org/10.15588/1607-6761-2016-1-4
Volkov ,V. A. (2013). Optimizatsiya rezhimov namagnichivaniya i razmagnichivaniya chastotnoreguliruyemogo asinkhronnogo dvigatelya, Naukovy pratsy Donets’kogo natsнonal’nogo tekhnichnogo universitetu, 2 (15), 64–70.
Kal’nitskiy, L. A., Dobrotin, D. A., Zheverzhev, V. F. Spetsial’nyy kurs vysshey matematiki dlya vuzov, Moscow: Vyssh. shk., 389.
Korn, G., Korn, T. (1974). Spravochnik po matematike dlya nauchnykh rabotnikov i inzhenerov, Moscow: Nauka, 832.
Tikhovod, S. M. (2015). Usovershenstvovaniye iteratsionnykh metodov resheniya sistem nelineynykh uravneniy sostoyaniya magnitoelektricheskikh skhem zameshcheniya, Elektrotekhnika ta elektroyenergetika, 1, 46–49. DOI: http://dx.doi.org/10.15588/1607-6761-2015-1-8
Tikhovod, S. M., Kornus, T. M., Patalakh, D. G. (2015). Metod uskorennogo chislennogo rascheta perekhodnykh protsessov v elektricheskikh tsepyakh na osnove approksimatsii resheniya algebraicheskimi polinomami, Elektrotekhnika ta elektroyenergetika, 2, 48–54. DOI: http://dx.doi.org/10.15588/1607-6761-2015-2-7
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 V. A. Volkov
This work is licensed under a Creative Commons Attribution 4.0 International License.
Creative Commons Licensing Notifications in the Copyright Notices
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under aCreative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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.
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.
