Research on testing platform for new energy grid-connected devices

A kind of testing platform of new energy grid-connected devices is proposed to conduct uniform performance test for various types of grid-connected converters In this paper. This platform adopts the topology of three-phase four-wire AC/DC/AC power electronic converter and double-loop control strategy of voltage and current. Therefore, it can accurately simulate practical power quality operating conditions such as grid voltage drop, three-phase unbalance, voltage harmonics, voltage flicker, frequency deviation and so on. The validity and feasibility of this method is verified in this paper though simulation and experiments.