The authors proposed an induction heating system for an extended pipeline, which implements the technology of local-associated heating, using the methods of functional integration. The authors carried out a study of the technology of local-associated thermal effect on an extended pipeline. We have developed a technical solution for a system of local-associated induction heating of a long pipeline using functional integration methods. We also developed a computer model of the system in the ELCUT 6.4 software package. The authors evaluated the efficiency of the heating process and obtained the characteristics of the magnetic field of the system as a result of modeling. We have solved a thermal problem that demonstrates the efficiency of the local heating technology.
The relevance Secondary power supplies, frequency converters, and inverters are actively used in modern rapidly developing power engineering. The trend towards a decrease in the weight and size of devices and an increase in their power explains the need to use pulse modes of electrical energy converters. The oscillatory circuits of resonant inverters contain elements such as an inductor and a capacitor, i.e. electromagnetic elements, as a rule, constituting up to 85–90 % of the mass and dimensions of secondary power supplies. The main technical means of reducing the mass and dimensions of electromagnetic elements are increasing the conversion frequency and functional integration. Resonant modes of operation of inverters during switching can reduce interference and losses. Aim of research This article discusses the development of an efficient capacitive storage charging system and simulation of electromagnetic processes in a filtercompensating device as part of an efficient capacitive storage charging system. The main task is to develop an efficient capacitive storage charging system. Research methods Research methods. In this study, the following methods were used: the study of scientific literature and computer simulation in the Matlab environment. Results The authors have developed a computer model in MatLab of a capacitive storage charging system based on a half-bridge circuit of an inductivecapacitive converter. A multifunctional integrated electromagnetic component (MIEC) is used as a pre-absorber. Investigations of voltage levels at various points of the four-terminal network have been carried out. The voltage on the plates and capacitance MIEC was determined. The voltage in the diagonals of the inverter was measured to find the maximum voltage. Because of computer modeling and experimental research, graphs of voltages on the elements of the half-bridge circuit of the capacitive storage charging system were obtained. The developed computer model will allow the investigation of various modes of operation of a secondary power source based on the proposed component in high-voltage charging systems for energy storage devices. The developed model allows you to reduce the financial costs of experimental research. Also, this model allows you to explore more complex systems based on MIEC, which have different properties and indicators.
The relevance The methods of functional integration of discrete electrical and electromagnetic components allow increasing the reliability and efficiency of electrical energy conversion systems, reducing their weight and dimensions. The authors proposed a circuit solution based on the replacement of some individual discrete components of a DC boost converter with a multifunctional integrated electromagnetic component (MIEС). The component performs the functions of an inductor and a filter capacitor. Aim of research This article discusses the investigation of a DC voltage booster converter based on a multifunctional integrated electromagnetic component. The main task is to investigate a DC voltage booster converter based on a multifunctional integrated electromagnetic component. Research methods In this study, the following methods were used: the study of scientific literature and computer simulation in the Matlab environment. Results A computer model of a step-up DC voltage converter based on MIEС in the Circuit Simulator software package has been developed. Graphs of the output voltage are obtained. The circuits of step-up DC voltage converters are analyzed. A circuit of a DC voltage boost converter based on MIEС has been assembled. Output voltage waveforms were taken. An analysis of the computer model and laboratory test sample was carried out. A set of works has been completed to improve the output characteristics of a step-up converter based on MIEС. The optimal scheme has been chosen to implement the replacement of the inductor and filter capacitor with a multifunctional integrated electromagnetic component. Conducted laboratory studies confirmed the operability of MIEС as a replacement for individual discrete components of the DC voltage boost converter circuit. The optimal mode of operation of the boost converter based on MIEС is determined, which makes it possible to expand the output voltage range and reduce ripples. Expansion of the output voltage range is feasible due to the near-resonant or resonant mode of operation of the converter, which is feasible due to the MIEС structure, which is a resonant LC circuit.
Relevance The use of functional integration methods in power electrical engineering makes it possible to achieve a reduction in the weight and dimensions of the finished device, as well as to increase the reliability and efficiency of the system. The use of hybrid components in the development of transformers makes it possible to implement the resonant mode of operation of the system, thereby reducing losses. Aim of research This article discusses the development of a circuit and modeling of a resonant transformer based on a multifunctional integrated electromagnetic component. The main tasks are to determine the electrical circuit of the resonant transformer implemented on the basis of a multifunctional integrated electromagnetic component and the analytical calculation of the parameters of the multifunctional integrated electromagnetic component. Research methods In this study, the following methods were used: patent review, the study of scientific literature, computer simulation performed in the MatLab software package. Results The authors have developed a computer model in MatLab of a resonant transformer based on a multifunctional integrated electromagnetic component. The design and functional features of component make it possible to implement the resonant mode of operation of the transformer, since the finished component is both a capacitive and an inductive load. An equivalent circuit of a multifunctional integrated electromagnetic component is presented and adapted to the MatLab software package. As a result of the simulation, a graph of the magnetizing current of the transformer was obtained. The analysis of the possibility of practical implementation of the system was carried out.
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