A battery charger is described that uses an on-line microcontroller to maximize its output power. This is done by always operating at either the maximum allowable input current or the thermal limit imposed by the charger itself. In this case the thermal limit is determined by the junction temperatures of the two main insulated gate bipolar transistors (IGBTs). Since direct measurement of these temperatures is impractical, they must be calculated by a computer algorithm that uses various on-line measurements. Experimental results for an 8 kW charger indicate a reduction in the bulk charging time of about 26% when used with a set of NiFe batteries.
A maximum power transfer battery charger for electric vehicles
IEEE Transactions on Aerospace and Electronic Systems ; 33 , 3 ; 930-938
01.07.1997
1501726 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A Maximum Power Transfer Battery Charger for Electric Vehicles
Online Contents | 1997
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