Wyniki wyszukiwania - BazTech

1

Pomiar rezystancji zastępczej i pojemności zastępczej przewodów wielożyłowych

Skubis Tadeusz, Piaskowy Anna

Przegląd Elektrotechniczny

|

2022

|

R. 98, nr 12

56--59

PL

W artykule przedstawiono metodę badań rezystancji zastępczej i pojemności zastępczej przewodów wielożyłowych wykorzystywanych w przemysłowych i seryjnych badaniach laboratoryjnych parametrów magnetycznych rdzeni ferromagnetycznych. Metoda ma zastosowanie dla przypadków, gdy wartość jednego z mierzonych parametrów przekracza zakres pomiarowy dostępnego przyrządu pomiarowego.

EN

The article presents a method of testing the equivalent resistance and the equivalent capacitance of multifilar windings used in industrial and serial laboratory tests of magnetic parameters of ferromagnetic cores. The method is applicable when the value of one of the measured parameters exceeds the measuring range of the available measuring instrument.

2

The impact of equivalent resistance on power generation using PV module during different seasons

Mushtag Amir, Mussadig Usman, Mahmood Anzar, Jafri Syed Hassan Mujtaba

Journal of Power Technologies

|

2022

|

Vol. 102, nr 4

175--186

EN

In the promoted study, the impact of equivalent resistance on power generation using pv module during different seasons is calculated as well as measured. The promoter of this research work intends to complete it in different phases: problem identification, data analysis and the description of results. In the first instance, the technical literature has been put into review to bridge the research gap, to estimate the impact of equivalent resistance on power generation by using PV module during changing seasons. In the second step, the impact estimation is made through Simulink model in MATLAB which is previously not used to calculate the power losses to the best of authors knowledge and an experimental study on a 20kW solar-based energy system in the department of Electrical Engineering, Mirpur University of science and technology is also performed. The results find that the series resistance has a direct relation with working temperature and the shunt resistance varies inversely with solar irradiance.

3

Analysis of an anti-parallel memristor circuit

Mladenov V., Kirilov S.

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska

|

2018

|

T. 8, nr 2

9--14

EN

The basic purpose of the present paper is to propose an extended investigation and computer analysis of an anti-parallel memristor circuit with two equivalent memristor elements with different initial values of the state variables using a modified Boundary Condition Memristor (BCM) Model and the finite differences method. The memristor circuit is investigated for sinusoidal supply current at different magnitudes – for soft-switching and hardswitching modes, respectively. The influence of the initial values of the state variables on the circuit’s behaviour is presented as well. The equivalent i-v and memristance-flux and the other important relationshipsof the memristor circuit are also analyzed.

PL

Podstawowym celem niniejszego artykułu jest zaproponowanie rozszerzonego badania i komputerowej analizy przeciwrównoległego układu memrystorowego z dwoma równoważnymi elementami memrystorowymi o różnych wartościach początkowych zmiennych stanu z wykorzystaniem zmodyfikowanego modelu Boundary Condition Memristor (BCM) i metody różnic skończonych. Obwód memrystorowy jest badany dla sinusoidalnego prądu zasilania o różnych wielkościach – odpowiednio dla trybów miękkiego przełączania i twardego przełączania. Przedstawiono również wpływ wartości początkowych zmiennych stanu na zachowanie obwodu. Analizowane są również równoważne charakterystyki prądowo-napięciowe zależność między memrystancją i strumieniem magnetycznym oraz inne ważne cechy obwodu memrystora.

4

Study on breakdown delay characteristics based on high-voltage pulse discharge in water with hydrostatic pressure

Yan D., Bian D. C., Ren F., Yin C. Q., Zhao J. C., Niu S. Q.

Journal of Power Technologies

|

2017

|

Vol. 97, nr 2

89--102

EN

Significant breakdown delay occurs during high-voltage pulse discharge in water with hydrostatic pressure; this phenomenon contributes to an assessment of the stability of discharge. Monitoring discharge effect is also an important approach in engineering. However, only a few studies have reported related influencing factors. This study established an equivalent circuit of a high-voltage pulse discharge based on gasification-ionization of plasma channels to study characteristics of high-voltage pulse discharge breakdown in water with high hydrostatic pressure. Simulation calculation of channel resistance was conducted using experimental data under different hydrostatic pressure and voltage conditions. The discussions in this paper center on the influencing mechanisms of hydrostatic pressure and voltage in breakdown delay. The results show that higher voltage leads to shorter breakdown delay. Equivalent resistance decreases with increasing voltage. High voltage can enhance the degree of ionization in plasma channels, which accelerates the velocity of the ionization current, shortening breakdown delay. Higher hydrostatic pressure results in longer breakdown delay. Equivalent resistance increases with increasing hydrostatic pressure. High hydrostatic pressure inhibits section areas of the plasma channel, slowing down the velocity of the ionization current and prolonging breakdown delay. This study provides theoretical guidance for monitoring analysis of high-voltage pulse discharge in engineering and studies on breakdown delay characteristics in pulse discharges.