1500 V photovoltaic (PV) 1 DC electric spring 1 DC microgrid 1 DC–AC converters 1 DC–DC converter 1 ESS sizing 1 Electric spring 1 History of engineering & technology 1 NPC topology 1 PFC 1 PV applications 1 PV generators 1 PV inverters 1 PV microinverters PV systems 1 Renewable energy 1 T-type converters 1 ZCS 1 ZVS 1 active power 1 active power up-regulation 1 adaptive droop control 1 bidirectional switch 1 bridge-linked (BL) 1 buck-boost 1 burst control 1 capability curves 1 cascade multilevel converters 1 cascaded H-bridge 1 center-cross-tied (CCT) 1