Multi-Channel Electrical Power Converters for Photovoltaic Applications

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Dr. Hamar János Krisztián
Department of Automation and Applied Informatics

In my final project, I examine the application opportunities of the so called multi-channel electrical power converters, instead of the existing distribution systems, because there are various problems with the current converting technologies, such as severe losses, poor efficiency and unreliable operation. More precisely, I focus on those DC/DC converters, which transmit the electrical energy to the low-voltage consumers in multiple channels. Nowadays, more and more systems are built even in Hungary that utilizes solar energy, thus electricity can be produced in an environmentally-friendly, clean way. Due to this, I have chosen the photovoltaic (PV) cells as the main energy source in the paper.

In the first chapter, a longer introduction of the topic can be read, then in the second chapter, the PV cells are examined generally, with respect to the latest research results in this field, and their possible installation in a system.

In the third chapter, firstly the characteristics of the PV cells are investigated, applying the PV panels available at the Department of Automation and Applied Informatics. This laboratory measurement is also completed with a simulation model.

The fourth chapter contains the investigation of the literature regarding the advanced, multichannel, low power electrical power converters. After that, the dimensioning methodology of these converters are elaborated in the fifth chapter, i.e. which parameters should be used for a desired operation.

Afterwards, an example converter is designed using the developed methodology, such as choosing a semiconductor switch and other circuit components. Following this, the theoretical results are confirmed by computer simulations, which is in included in the sixth chapter.

In the end, in the seventh chapter, I draw the consequences based on the fulfilled tasks and sum up the achieved results and experiences.


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