Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
385 2 |
Ultima descărcare din IBN: 2023-06-04 09:48 |
Căutarea după subiecte similare conform CZU |
621.313.333.004.67 (1) |
Electrotehnică (1161) |
SM ISO690:2012 КОВАЛЕВ, Виктор, КОВАЛЕВА, Юлия, ЩЕРБАК, Ирина. Механическая мощность двигателей постоянного тока при полигармоническом питании. In: Problemele Energeticii Regionale, 2022, nr. 1(53), pp. 1-9. ISSN 1857-0070. DOI: https://doi.org/10.52254/1857-0070.2022.1-53.01 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Problemele Energeticii Regionale | ||||||
Numărul 1(53) / 2022 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.52254/1857-0070.2022.1-53.01 | ||||||
CZU: 621.313.333.004.67 | ||||||
Pag. 1-9 | ||||||
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The aim of the work is to develop a method for determining the mechanical power of DC motors when they are powered by semiconductor converters, since the harmonic components of the armature current do not create a torque on the shaft. This means that at the nominal electric power of the motor, it is necessary to reduce the mechanical power to ensure the nominal temperature regime of the armature winding. The aim is achieved by solving the problem of determining the dependence of the mechanical power of the motor on the armature current pulsations factor, the value of which de-pends on the control parameter of the thyristor or transistor converter, on the inductance of the arma-ture circuit and the load current. As a result, it was proposed to express the dependence of the mechan-ical power in terms of the allowable mechanical load factor, which, in turn, depends on the armature current pulsations factor. The method is as follows: 1) on a computer model determine the armature current pulsations factor; 2) determine the allowable mechanical load factor and the allowable me-chanical power. The novelty of the work lies in the fact that the expression for determining the allow-able mechanical load of DC motors with polyharmonic power has been further developed, which, un-like the known ones, contains the square of the armature current pulsations factor. An example of the practical use of the proposed method for calculating the allowable mechanical power of DC motor when powered by single-phase thyristor rectifier. |
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Cuvinte-cheie DC motor, mechanical power, load factor, factor of pulse current, motor de curent continuu, putere mecanică, coeficient de pulsații a curentului, factor de sarcină, двигатель постоянного тока, механическая мощность, коэффициент пульсаций тока, коэффициент загрузки |
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