An Optimized LVRT Control Strategy of Cascaded Modular Medium-Voltage Inverter for Large-Scale PV Power Plant

Active power backflow is an inherent problem of three-phase cascaded H-bridge (CHB) photovoltaic (PV) grid-tied inverters during low-voltage ride through (LVRT), probably resulting in no balanced operating point of the system, and the inverter will be shut down and off-grid due to overvoltage fault....

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Veröffentlicht in:	IEEE journal of emerging and selected topics in power electronics 2022-12, Vol.10 (6), p.7744-7759
Hauptverfasser:	Zhao, Tao, Feng, Zhijian, Wang, Mingda, Wu, Mengze, Chen, Daolian
Format:	Artikel
Sprache:	eng
Schlagworte:	Active control Active power backflow cascaded H-bridge (CHB) Control methods Inverters low-voltage ride through (LVRT) Medium voltage modular medium-voltage inverter Photovoltaic cells Power generation Power plants Short circuits Shutdowns Switches Topology Voltage control Voltage drop
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