The diploma paper describes the construction of a cascade converter which was assembled in the LRTME laboratory. Such converters enable us to supply consumers with the help of more than one direct sources of voltage which require higher alternating voltage for their operation.
The converter is based on the serial connection of three power bridge circuits where each bridge has its own power supply. By switching the bridge circuits correctly we want to approach the sinusoidal shape of the alternating voltage as close as possible. The key building blocks of the power bridge circuit are MOSFET transistors by which direct voltage sources are switched on and off with the help of the Delfino F28377D control card. The remaining main building blocks of the converter are: a circuit board for electronics supply, a circuit breaker for electronics, measuring elements and transformers. The converter was designed for research purposes to obtain direct voltage, with the help of rectifiers directly from the mains voltage, which is then brought to the bridge circuits.
My contribution to this project was to interconnect all circuits and other building blocks and to perform all test measurements.