SCIENTIFIC AND METHODOLOGICAL APPROACH TO TEACHING CALCULATIONS OF ELECTRICAL EQUIPMENT IN AN ENGINEERING UNIVERSITY
Section: GENERAL SECTION
Proceedings: 7TH BETANCOURT INTERNATIONAL ENGINEERING FORUM
Authors:
1.
Emperor Alexander I St. Petersburg State Transport University
(Department “Wagons and Carriage Industry”, Associate Professor)
Russian Federation
Russian Federation
2.
Emperor Alexander I St. Petersburg State Transport University
(Doctor of Technical Sciences, Professor; Professor of the Department of Theoretical Foundations of Electrical Engineering and Power Engineering)
Russian Federation
Russian Federation
Type:
Сonference article
Pages:
from 348
to 356
Published:
25.06.2026
Subject area:
UDC 621.314
UDC 001.2
UDC 001.2
Language:
Russian
Keywords:
electrical equipment, generator, transformer, equivalent circuit, sinusoidal function, real impulse, exponential impulse
Abstract:
The scientific and methodological approach to teaching electrical circuit calculations involves simplification. Any electrical equipment can be represented as an electrical circuit to simplify the calculation process. In a steady-state condition, the electrical circuit is often considered as a sinusoidal current circuit. When differentiating or integrating, the sinusoidal function remains unchanged. This is particularly useful when calculating the circuit in complex form. The sinusoidal nature of voltage and current is due to the rotational motion of the generator’s rotor or the rotating magnetic field. However, there are challenges associated with pulse-based applications. An impulse action requires the calculation of a transient process. Since the shape of impulses can be mathematically complex, it would be convenient to simplify the calculations. This is exactly what is done in the article: the real impulse is replaced by an exponential impulse. In this case, differentiation and integration do not change its mathematical description.
The scientific and methodological approach to teaching electrical circuit calculations involves simplification. Any electrical equipment can be represented as an electrical circuit to simplify the calculation process. In a steady-state condition, the electrical circuit is often considered as a sinusoidal current circuit. When differentiating or integrating, the sinusoidal function remains unchanged. This is particularly useful when calculating the circuit in complex form. The sinusoidal nature of voltage and current is due to the rotational motion of the generator’s rotor or the rotating magnetic field. However, there are challenges associated with pulse-based applications. An impulse action requires the calculation of a transient process. Since the shape of impulses can be mathematically complex, it would be convenient to simplify the calculations. This is exactly what is done in the article: the real impulse is replaced by an exponential impulse. In this case, differentiation and integration do not change its mathematical description.
Keywords:
electrical equipment, generator, transformer, equivalent circuit, sinusoidal function, real impulse, exponential impulse
electrical equipment, generator, transformer, equivalent circuit, sinusoidal function, real impulse, exponential impulse
1. Teoreticheskie osnovy elektrotehniki: uchebnik dlya vuzov / K. S. Demirchyan [i dr.]. T. 1. SPb.: Piter, 2003. 463 s.
2. Rusin Yu. S., Glikman I. Ya., Gorskiy A. N. Elektromagnitnye elementy radioelektronnoy apparatury: spravochnik. M.: Radio i svyaz', 1991. 224 s.
3. Raschet elektromagnitnyh elementov istochnikov vtorichnogo elektropitaniya / A. N. Gorskiy [i dr.]. M.: Radio i svyaz', 1988. 176 s.
4. Ivanov I. I., Solov'ev G. I., Frolov V. Ya. Elektrotehnika i osnovy elektroniki: uchebnik. 7‑e izd., pererab. i dop. SPb.: Lan', 2012. 736 s.
5. Hryapenkov G. A., Stryzhakov E. P. Elektricheskie apparaty i cepi vagonov: uchebnik dlya tehnikumov i kolledzhey zh/d transporta. M.: Marshrut, 2006. 544 s.
