Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Hybrid UPS with Energy Storage System Function
Authors Seung-Beom Lim and Soon-Chan Hong ;
DOI 10.6113/TKPE/2014.19.3.266
Page pp.266-275
ISSN 1229-2214
Keywords ESS(Energy Storage System); UPS(Uninterruptible Power Supply); TNPC(T-type Neutral Point Clamp)
Abstract This paper proposes the hybrid UPS(Uninterruptible Power Supply) with ESS(Energy Storage System) function. The proposed hybrid UPS is operating in four states, which are normal state, battery state, ESS state, and bypass state. In case of peak load time or power shortage, the system is operating in ESS state in which the stored energy of the battery is used to manage the power effectively. The validity of proposed system are verified by simulations and experiments.