... Topologies of UPS. (a) DC/AC inverter + transformer. (b) DC/DCbooster + DC/AC inverter. (c) Z- source inverter. In this paper, a new topology of the UPS is proposed byusing a Z- source inverter [10]–[13]. ... on Z- Source Inverter Zhi Jian Zhou, Xing Zhang, Po Xu, and Weixiang X. Shen, Member, IEEEAbstract—This paper presents a new topology of uninterrupt-ible power supply (UPS) by using a Z- source ... inverters and Z- source inverter, ” in Proc. IEEE 36th PowerElectron. Spec. Conf., Sep. 11–14, 2005, pp. 1692–1698.[12] F. Z. Peng, X. M. Yuan, X. P. Fang, and Z. M. Qian, Z- source inverter for adjustable...