A Novel VSG Control Strategy for UPS Voltage Source Inverter with Impulsive Load

This paper proposes a novel control strategy to alleviate the impulsive current for Uninterruptible Power Supply (UPS), which is designed based on theory of virtual synchronous generator (VSG) and dynamic switching method. The power quality UPS will become distortion when instantaneous load imposed UPS. Especially, output increase quickly in short time. In order maintain uninterrupted voltage reduce under action impulse load, Dynamic method proposed resist with large scale current, Meanwhile, VSG adopted deal slow provide inertia system, so that can remain stable. Finally, simulation experimental results show this effectively suppress inverter, ensure good performance On-line load.