TK813 : Design and simulation of power transformers by using matrix converters
Thesis > Central Library of Shahrood University > Electrical Engineering > MSc > 2021
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Abstarct: With the increasing expansion of consumers and increasing demand in energy distribution and transmission systems, power grids are shifting to microgrids. This change in the status of distribution networks will cause problems in the management of energy systems. Transformers are one of the key elements in these systems that have a large volume and weight and cannot manage power transmission in the network. These two major drawbacks have led to the idea of using electronic power transformers for various applications in recent years. In these transformers, with increasing frequency, the volume and weight of the transformer are reduced, and also with the use of electronic power converters, the defect related to power transmission management in networks has been eliminated. Different topologies have been proposed for electronic power transformers, which in addition to different topologies and control methods, other advantages are added to the mentioned system. Rectifier-inverter topology is one of the most common structures proposed, which has disadvantages such as the presence of energy-saving elements that increase the temperature, reduce life, increase the volume and mass of the converter. Therefore, in this study, we use matrix converters due to the lack of capacitors and inductors as energy storage elements to not only reduce the mass and volume and also increase the life of the converter, which has more potential to increase the frequency. To control this converter, the methods of carrier wave control and Sequential Model prediction control are presented comparatively. Because the carrier wave method is one of the conventional methods of controlling these converters, and on the other hand, due to the nonlinearity of the converter, this modulation method has a limited control function. Finally, the performance improvement of the electronic power transformer using the Sequential Model predictive control method is shown compared to the carrier wave method.
Keywords:
#Electronic Power Transformer #Matrix Converter #Carrier Wave Modulation #Sequential Model Predictor Control #High Frequency Transformer Keeping place: Central Library of Shahrood University
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