The paper concerns a battery charger that has been developed for use in a battery powered electric road vehicle. The object is to charge the 144 V traction battery directly from the 220 V supply by drawing sinusoidal current at the input, to obtain, a high efficiency and to have transformer isolation from the supply. To achieve this, the rectified 220 V supply is chopped up to 500 V by a DC to DC convertor and trasnformed to the necessary voltage for battery charging by using a high-frequency self-oscillating inverter with magnetic feedback. The rectified output of the inverter charges the battery. The step-up chopper controls the transmitted power to the battery and ensures a sinusoidal line current. A detailed description of the power circuit is given and the capabilities of the complete system are proved by extensive measurements.
High-efficiency on-board battery charger with transformer isolation, sinusoidal input current and maximum power factor
Leistungsstarkes bordinternes Batterieladegeraet mit Trenntransformator und sinusfoermigem Eingangsstrom
IEE Proceedings, Part B (Electric Power Applications) ; 133 , 4 ; 197-204
1986
8 Seiten, 16 Bilder, 17 Quellen
Article (Journal)
English
High Efficiency On-Board Charger with Sinusoidal Line Current and Fast Switching Resonant Converters
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