Modelling and ZVS control of an isolated three-phase bidirectional AC-DC converter

This paper presents an isolated three-phase bidirectional AC-DC converter with a novel modulation strategy that enables Zero-Voltage-Switching (ZVS) for all switches over the whole AC line period. The AC-DC converter allows the direct coupling of a three-phase AC system with a DC port applying a single high-frequency transformer. A novel modelling approach for the power flows and the derivation of the control variables under ZVS conditions are provided. The design of components including loss models and simulation results of a 11kW electric vehicle battery charger to connect to the 230Vrms, 50Hz mains considering a battery voltage range of 380V to 540V validate the theoretical analysis.

[1]  O. Wasynczuk,et al.  Modeling and analysis of N-port DC-DC converters using the cyclic average current , 2012, 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[2]  P. L. Dowell,et al.  Effects of eddy currents in transformer windings , 1966 .

[3]  Ned Mohan,et al.  Advanced modulation strategy for a three-phase AC-DC dual active bridge for V2G , 2011, 2011 IEEE Vehicle Power and Propulsion Conference.

[4]  J. Muhlethaler,et al.  Modeling and multi-objective optimization of inductive power components , 2012 .

[5]  J.L. Duarte,et al.  Transformer-Coupled Multiport ZVS Bidirectional DC–DC Converter With Wide Input Range , 2008, IEEE Transactions on Power Electronics.

[6]  S. Norrga,et al.  A Three-Phase Soft-Switched Isolated AC/DC Converter Without Auxiliary Circuit , 2008, IEEE Transactions on Industry Applications.

[7]  J. Kolar,et al.  Analysis of Theoretical Limits of Forced-Air Cooling Using Advanced Composite Materials With High Thermal Conductivities , 2011, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[8]  J.W. Kolar,et al.  An Isolated Three-Port Bidirectional DC-DC Converter With Decoupled Power Flow Management , 2008, IEEE Transactions on Power Electronics.

[9]  J. Biela,et al.  An innovative bidirectional isolated multi-port converter with multi-phase AC ports and DC ports , 2013, 2013 15th European Conference on Power Electronics and Applications (EPE).

[10]  D.M. Divan,et al.  Performance characterization of a high power dual active bridge DC/DC converter , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[11]  T.A. Lipo,et al.  Three phase PWM boost-buck rectifiers with power regenerating capability , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[12]  Giorgio Spiazzi,et al.  High-precision current source using low-loss, single-switch, three-phase AC/DC converter , 1996 .

[13]  J.L. Duarte,et al.  Three-Port Triple-Half-Bridge Bidirectional Converter With Zero-Voltage Switching , 2008, IEEE Transactions on Power Electronics.

[14]  Charles R. Sullivan,et al.  Accurate prediction of ferrite core loss with nonsinusoidal waveforms using only Steinmetz parameters , 2002, 2002 IEEE Workshop on Computers in Power Electronics, 2002. Proceedings..