Overvoltage in the free phase of the stator winding in case of asymmetric short circuit implicit pole synchronous generator biaxial excitation

Abstract

Reviewed and analyzed issues associated with overvoltage in the free phase winding of the stator with asymmetric short-circuit implicitly pole synchronous generator biaxial excitation, and compared the results of experimental measurements of the phase currents in the study of a mathematical model of the synchronous generator biaxial excitation (MM SGBD) and physical model SGBD and the SG at steady-state single-phase short circuit.

Regulation of mains voltage and reactive power with the help of a synchronous compensator by two-axis excitation

“…− = 0.5 • . (7) This leads to an increase in voltage losses in the network and a decrease in voltage at consumers. Under-excitation of synchronous compensators can be used when it is necessary to reduce the voltage, for example, in the mode of the lowest loads.…”

Mathematical model of machining errors on CNC lathes

“…In this case, the size deviations of each part act, in turn, as the realization of some random variable Yn corresponding to the number of the processing cycle n; the size deviations of different parts yn and yn+1, manufactured in different cycles, are the values of different random variables. Such an approach fully meets the essence of the matter: indeed, every nth processing cycle occurs under a unique set of conditions [3][4][5][6][7][8][9][10].…”

Mathematical and simulation modeling of a synchronous generator for micro hydroelectric and low-speed wind power plants

“…The article describes the results obtained on the basis of a number of research works to improve the design of a lowspeed wind power plant and a synchronous generator designed to produce electricity from bulk water. As a result of theoretical and applied scientific research [1][2][3][4], the effectiveness of making changes to the design of the rotor of a synchronous generator was shown. To speed up and facilitate the analysis of operating conditions of a synchronous generator, mathematical and simulation models have been developed.…”

“…For this purpose, electromagnetic processes of a low-speed generator [10] are studied and analyzed using mathematical and simulation models. The main magnetic field of the low-speed generator considered in this article is created by neodymium permanent magnets and additional transverse excitation coils, controlled at the required time [1][2][3][4]. Much work is being done to develop and improve low-speed synchronous generators used to convert low-speed wind energy and free water into electricity [1][2][3][4][6][7][8][9].…”