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Analysis of battery charger topologies for an electric vehicle

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3 Author(s)
Jalakas, T. ; Dept. of Electr. Drives & Power Electron., TUT, Tallinn, Estonia ; Roasto, I. ; Vinnikov, D.

This article focuses on fast chargers of electric vehicles. One of the crucial parts of a fast charger is the secondary charging converter that must be able to regulate efficiently battery charge voltage and current. To be able to use the electric vehicle battery as a temporary energy storage in the electric grid, the topology of a charging converter must enable a bidirectional energy flow. Bidirectional converters need an additional boost circuit to stabilize the battery voltage while draining energy from it. Class 3 unidirectional charging converters could be realized with a current doubler rectifier topology and bidirectional ones with a controllable full-bridge rectifier/inverter, resulting from its advantage over the current doubler in this operational mode. A quasi Z source could be used as a filter/boost circuit.

Published in:

Electronics Conference (BEC), 2012 13th Biennial Baltic

Date of Conference:

3-5 Oct. 2012