Title :
Modelling and ZVS control of an isolated three-phase bidirectional AC-DC converter
Author :
Jauch, Felix ; Biela, Juergen
Author_Institution :
Lab. for High Power Electron. Syst., ETH Zurich, Zurich, Switzerland
Abstract :
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.
Keywords :
AC-DC power convertors; battery chargers; battery powered vehicles; high-frequency transformers; load flow; switching convertors; zero voltage switching; AC line period; ZVS control; electric vehicle battery charger; frequency 50 Hz; high-frequency transformer; isolated three-phase bidirectional AC-DC converter; loss models; power 11 kW; power flows; three-phase AC system; voltage 230 V; voltage 380 V to 540 V; zero voltage switching; AC-DC power converters; Hafnium; Inductance; Switches; Voltage control; Windings; Zero voltage switching; Battery charger; Converter circuit; Energy converters for HEV; Soft switching; Three-phase system; ZVS converters;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634323
