High Performance Multi-channel Electrical Power Converters

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Dr. Hamar János Krisztián
Department of Automation and Applied Informatics

The scope of this study is the multichannel DC-DC converters and the main object is to make a physical realization of a topology from a novel multichannel resonant converter family and investigate the possibilities of using them. These are applications where two independent voltage sources can be utilized.

Power electronic converters are a main part of modern electric circuits. One of the reasons is the demand for various voltage levels to power up different devices. Multiple output converters can be a proper solution for optimizing the power distribution. These type of converters can be very promising candidates for applications with multilevel inverters where high number of input voltage levels are required.

Operation will be predicted with calculations and simulations for a chosen topology. The task of this project is to design a hardware prototype which is able to confirm the theoretical and simulation results. The main technologies that are necessary for the realization will be presented. Simulation has become an integral part of the design process of nearly every product in the area of electrical engineering mainly because it is reducing time and costs of product development. Then a design method will be discussed that presents the new challenges, point out the possible optimization options and shows a robust process which ends in a properly working resonant converter. Based on the design methodology and simulations the actual design process will be presented. EMC related facts has to be considered during dimensioning the parts and designing the hardware. Furthermore, PCB design for high-current fast-switching converters demands more caution than ordinary PCBs.

During this project, actually two converter topologies were designed and built. Several test cases were defined with different operational points. The simulation and test results confirmed and verified the theoretical

considerations. The built converters operate according to the specifications.

The results of this project support the progress of the promising novel multichannel resonant converter family and provides an excellent opportunity for further studies and examinations of these converters.


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