qZS Inverter as Synchronverter in Small-Scale Micro-Grid

Abstract

Focus is on the case study of a synchronveter model use in the qZS inverter working in an islanding operation mode. Main tasks and control principles of a sychronverter in the microgrid are explained. Theoretical assumptions are tested and verified with Psim simulation model with different types and powers of microinverter loads. General waveforms are presented and discussed. Also, the effectiveness of synchronverter implementation is verified by means of grid regulation capability. Additionally, we address the most challenging tasks for further developments and improvements of the qZS inverter based synchronverter in microgrids. DOI: http://dx.doi.org/10.5755/j01.eie.24.2.20636

Keywords

• dc-ac power converters
• voltage-source converters
• static power converters
• power quality.