Wyniki wyszukiwania - BazTech

1

Bidirectional DC–AC Converter-Based Communication Solution for Microgrid

Zhang Yixuan, Ni Kai, Wang Yangang, Hu Yihua

Power Electronics and Drives

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2020

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Vol. 5 (40)

177--188

EN

The communication system of a microgrid can transfer the information of electricity price, power consumption and so on between users and the control centre. This capability is of great significance to improve the efficiency and sustainability of power facilities. In this paper, a bidirectional DC–AC converter topology is proposed to achieve the composite transmission of power and signals in microgrids. Since the transmitted signals are modulated by power switches of converters and integrated into the currents, the cost of signal couplers can be saved and the circuit structure can be simplified. In order to verify the feasibility of the proposed method, a simulation model of the proposed converter is implemented in MATLAB/Simulink. With the power supply frequency of 50 Hz, when the converter operates in the inverter mode and rectifier mode, the data transmission rate can reach 120 bit/s and 48 bit/s, respectively.

2

Hybrid energy system - optomization and new concept

Moravek J., Mastny P.

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska

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2014

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nr 3

77--80

EN

Paper presents a research related to the design of a new concept of hybrid energy system. It describes actually used concepts and the benefits of new design. Subsequently, the problems of the proper systems setting and working conditions are discussed and the new concept of the systems settings is presented. Research is further enhanced by comparing with the simulation model assuming the weather data acquired for the test location. The measured data are compared with the results of simulation.

PL

Artykuł przedstawia projekt nowej koncepcji hybrydowego systemu energetycznego. W pracy przedstawiono aktualnie stosowane koncepcje i na ich tle zalety nowego podejścia. Następnie dyskutowano odpowiednie ustawienia i warunki pracy systemu oraz przedstawiono nową koncepcję systemu. Dodatkowo badania są zilustrowane porównaniem z modelem symulacyjnym, przy założeniu, że dane pogodowe pozyskane zostały dla testowej lokalizacji.

3

Analysis Research of Control Method Model on Automobile Brake Test Rig

Yang C., Ren E., Dang J.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 7b

375--378

EN

This paper, firstly in accordance with the engineering design method, PID controller are used to control the current loop and speed loop common on double closed-loop DC converter, and build dual-loop PID control model, and Matlab’s emulation to model, as well as analysis and evaluate the structural of the simulation. Because conventional PID control can not meet the parameters of the controlled object changes and lack of non-linear characteristics, the fuzzy self-tuning PID can overcome the uncertainty and nonlinear objects, furthermore the fuzzy self-tuning PID has more flexibility and adaptability, so this paper putting to use fuzzy self-tuning PID controller for dual-speed loop in the closed-loop system to transform, so that it has not or less affected by the object model, you can achieve high performance, robustness and other advantages.

PL

W artykule opisano metodę testowania system hamulcowego w pojazdach samochodowych. Ay uniezależnić wyniki testu od parametrów układu sterowania zaproponowano ulepszony kontroler PID z automatycznym strojeniem i wykorzystaniem logiki rozmytej.