An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC grids

Lee, Youngsil and Vakil, Gaurang and Watson, Alan James and Wheeler, Patrick (2016) An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC grids. In: IEEE Power and Energy Conference at Illinois, 23-24 Feb 2017, Illinois, USA.

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Abstract

Due to the increasing installation of renewable and decentralized power sources, Medium-voltage dc (MVDC) grids has been considered for an alternative application to medium-voltage ac (MVAC) application. Three-phase dual active bridge DC-DC (3DAB) converter is proposed as an attractive topology for MVDC grids due to its high power capability, smaller filtering parts, and galvanic isolation. In this paper, a first harmonic approximation (FHA) modeling of 3DAB converter is derived. Using the FHA modeling, a symmetrical modeling of switching devices is introduced and a 4MVA system for 40kV MVDC system has been validated in terms of conduction and switching losses. Experimental implementation of a 10kVA prototype and the results are presented.

Item Type: Conference or Workshop Item (Paper)
Keywords: Dual active bridge, DC-DC converter, MVDC, Power losses
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
Related URLs:
Depositing User: Burns, Rebecca
Date Deposited: 08 Feb 2017 13:08
Last Modified: 20 Mar 2017 06:05
URI: http://eprints.nottingham.ac.uk/id/eprint/40383

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