Low-voltage Ride-through Methods for Grid-connected Photovoltaic Systems in Microgrids: A Review and Future Prospect

Haval Sardar Kamil (Universiti Teknologi Malaysia (UTM))
Dalila Mat Said (Universiti Teknologi Malaysia (UTM))
Mohd Wazir Mustafa (Universiti Teknologi Malaysia (UTM))
Mohammad Reza Miveh (Tafresh University)
Nasarudin Ahmad (Universiti Teknologi Malaysia (UTM))

International Journal of Power Electronics and Drive Systems (IJPEDS)
Vol 9, No 4: December 2018

Power quality is a concern for utility and grid operators due to a large penetration of intermittent and stochastic renewable power generation sources. One of the major concerns, when designing and controlling grid-feeding photovoltaic (PV) inverters is meeting the grid requirements. International grid requirements demand low-voltage ride-through (LVRT) capability and maintaining grid functionality during fault conditions. This paper presents a comprehensive review for several control techniques to assure the LVRT capability of grid-feeding converters as well as discussing their respective advantages and limitations in detail. Areas for further research are identified afterwards. Finally, the conclusion gives a brief summary and critique of the findings.