An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC gridsTools 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. Full text not available from this repository.
Official URL: http://ieeexplore.ieee.org/document/7935740/
AbstractDue 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.
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