2010 7th National Conference on Electrical, Electronics and Computer Engineering, ELECO 2010, Bursa, Turkey, 2 - 05 December 2010, pp.273-277
Nowadays, in the applications which require high power and long distance power transmission, HVDC lines are preferred over traditional AC transmission systems, such as offshore wind farms. The reasons are increasing the efficiency by reducing the losses on the lines and decreasing the cost of overall systems. Before transmitting the power onshore, to regulate the voltage and to provide galvanic isolation, high power DC/DC converters are used. New generation high power DC/DC converters include an input inverter, a transformer and an output rectifier. 3 phase series resonant converter (SRC3) is in this group. The greatest advantage of this converter is to be able to switch at zero voltage and near zero current due to its LC resonant tank. As a result, the efficiency and the output power density can be increased considerably. In this work, 3 phase series resonant converter topology and its principles have been studied by simulations.