This paper presents the development of a hardware simulator for a 3-parallel grid-connected PMSG wind power system. With the
development of permanent magnetic materials in recent years, the capacity of a PMSG based wind turbine system, which requires a
full-scale power converter, has been raised up to a few MW. Since it is limited by the available semiconductor technology, such large
amounts of power cannot be delivered with only one power converter. Hence, a parallel connecting technique for converters is
required to reduce the ratings of the converters. In this paper, a hardware simulator with 3-parallel converters is described and its
control issues are presented as well. Some experimental results are given to illustrate the performance of the simulator system.