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	A COST-EFFECTIVE DC/DC-CONVERTER WITH INTEGRATED UPS-FUNCTION	[View]   [Download]
Author(s)	Berthold Fuld
Abstract	A new DC/DC-converter with integrated UPS-function is described. The solution has important advantages compared to other UPS-approaches: - Minimized number of conversion stages - Very high efficiency during battery operation - No interruption at line failure - Small volume - Low cost A conventional DC/DC-converter is supplemented by a second input winding of the transformer, a second switch-circuit and a charge circuit. Only one control circuit for both inputs is necessary: the change from line to battery operation is natural. At battery operation only one conversion stage between battery and load is necessary, this gives a very high efficiency. The charge circuit can be realized as a simple buck-stage, for converters with 50% max. duty cycle it must work in the discontinuous mode.The same winding of the transformer as for battery operation is used. Simulation results show the function of the system.
Download	Filename: Unnamed file Filesize: 1.366 MB
Type	Members Only
Date	Last modified 2019-06-03 by System