TY - JOUR
T1 - An Effective Solution for Regeneration Protection in Uninterruptible Power Supply
AU - Lu, Jinghang
AU - Guerrero, Josep M.
AU - Savaghebi, Mehdi
AU - Ghias, Amer M.Y.M.
AU - Guan, Yajuan
AU - Hou, Xiaochao
AU - Vasquez, Juan C.
PY - 2019/5
Y1 - 2019/5
N2 - In this paper, a regeneration protection solution is proposed to address the dc-link overvoltage issue and the unequal power sharing in the parallel uninterruptible power supply (UPS) systems. First, a dc-link voltage protection control strategy is proposed to protect the inverter against the excessive dc-link voltage that may trigger the protection mechanism of the UPS system. In addition, an active power-sharing control strategy by regulating the virtual resistance is proposed to solve the circulating current caused by UPS regeneration issue. Finally, the feasibility of the proposed regeneration protection solution is verified by experimental results from the parallel UPS system prototype.
AB - In this paper, a regeneration protection solution is proposed to address the dc-link overvoltage issue and the unequal power sharing in the parallel uninterruptible power supply (UPS) systems. First, a dc-link voltage protection control strategy is proposed to protect the inverter against the excessive dc-link voltage that may trigger the protection mechanism of the UPS system. In addition, an active power-sharing control strategy by regulating the virtual resistance is proposed to solve the circulating current caused by UPS regeneration issue. Finally, the feasibility of the proposed regeneration protection solution is verified by experimental results from the parallel UPS system prototype.
KW - Active power sharing
KW - DC-link voltage protection (dcVP)
KW - Uninterruptible power supply (UPS)
KW - Virtual resistance
UR - http://www.scopus.com/inward/record.url?scp=85064972317&partnerID=8YFLogxK
U2 - 10.1109/TIA.2019.2900601
DO - 10.1109/TIA.2019.2900601
M3 - Journal article
AN - SCOPUS:85064972317
SN - 0093-9994
VL - 55
SP - 3055
EP - 3065
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 3
M1 - 8645693
ER -