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Shneen , Salam Waley
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Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Study, Design, Modeling, Simulation, and Control Analysis of DC-DC Power Converters Shneen , Salam Waley
Journal of Fuzzy Systems and Control Vol. 3 No. 3 (2025): Vol. 3 No. 3 (2025)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/jfsc.v3i3.345

Abstract

Researchers are interested in studying power electronics converters because of their importance in many fields and applications, including industrial, agricultural, and domestic applications. Power electronics converters are relatively economical compared to conventional converters. In this work, the researchers present research contributions, including a study on how to design a DC-DC converter from a constant electrical quantity at the converter's input to a variable quantity depending on the load requirements associated with the converter's output. As another research contribution, the researchers are working on building a model of a DC-DC converter. The third contribution is conducting tests using the model and simulating the converter using the engineering computer program MATLAB. Performance is evaluated, ways to improve the converter's operation are identified, and its behavior is analyzed during the transient and steady-state operation periods. Power electronics converters are used to increase the voltage, called a boost converter. There is a type used to decrease the voltage, called a buck converter. Another type combines both states, depending on the system requirements, called a buck-boost converter. Tests are conducted to identify how the converter can be used to meet the load requirements associated with the converter output. They also identify how to control system state changes during operation and how to counter fluctuations resulting from various factors. To adequately cover the load, efforts are made to regulate and improve the performance of the converter by regulating the electrical power to suit this. The converter design is developed to provide the required voltage and current for efficient operation.
Study, Design, Modeling, Simulation, and Control Analysis of AC-AC Power Converters Shneen , Salam Waley
Journal of Fuzzy Systems and Control Vol. 3 No. 3 (2025): Vol. 3 No. 3 (2025)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/jfsc.v3i3.347

Abstract

The current study aims to provide an analysis of the performance of the AC power converter by constructing a simulation model. A preliminary simulation model is designed to identify the behavior of open-loop and closed-loop systems. To improve the converter's performance, pulse width modulation (PWM) technology and a conventional controller are used to control the converter's output voltage and frequency. An AC converter varies electrical quantities to suit the load requirements and the available power source. Converters can be used in lighting circuits to control the intensity of lighting and to control the rotational speed of electric motors, such as single-phase induction motors. The power electronics converter model is an AC voltage control unit type, built using electronic switches, which are semiconductor devices such as thyristors and transistors (IGBT, MOSFET). The input terminal of the converter is connected to a constant voltage and frequency AC power supply, while the output terminal is connected to an AC load, controlled by the root mean square value of the AC voltage. The output of the converter can be controlled by regulating the operating periods of the electronic switches, depending on the type and method of connecting the switches, whether full wave or half wave, with regulated periods. The study presents a test of AC converter, and through simulation results, it is shown that the converter's performance can be improved using pulse width modulation technology and a conventional PID controller. Modeling a single-phase AC transformer system using a thyristor as an electronic switch. The system model consists of a 100V, 50Hz single-phase power supply connected in series with a transformer containing two thyristor switches connected in parallel. The transformer output is connected to a load with a resistance of 10 ohms. Tests were proposed using single-phase converter simulation models, where the switching angle of the electronic thyristor was changed from 10 to 90 degrees in 10-degree increments. The simulation results showed that the converter's output voltage could be changed by changing the switching angle, with the change being inverse; that is, increasing the switching angle leads to a decrease in the converter's output voltage.
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