Development of a test platform for controlling parallel converters

As renewable energy contributes more and more in the power generation, bigger and more efficient power converters are used to integrate these energy sources into the power grid. Paralleling the power converters, is an accepted method to reduce the size of the passive elements and losses. By making a proper interleaving angle between the converters the current ripple can be reduced considerably. In order to be able to investigate the performance of these converters a safe and cheap platform is essential. The development of a test platform for such an application is challenging, since a proper synchronization has to be established between the converters. In this paper a universal platform is presented, which allows to parallel n converters with arbitrary interleaving angle between each other.