Power-factor-corrected single-stage inductive charger

Details Power-factor-corrected single-stage inductive charger Power-factor-corrected single-stage inductive charger

1999-08-02

2000-12-12

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

Charger inductively coupled to cell or battery

H01M 1046

Patent

active

061603740

ABSTRACT:
The present invention comprises a power-factor-corrected, single-stage inductive charger that may be used to charge a load, such as batteries of an electric vehicle. The inductive charger system is a single stage inductive charger compatible with the Society of Automotive Engineers inductive charging standard SAE J-1773. The single stage power processing provided by the inductive charger system includes both power factor correction and output power regulation using a relatively low parts count. The inductive charger system is fully soft switched over the line voltage and power range, resulting in high efficiency. The inductive charger system uses the current source operation of a series-parallel resonant converter feeding the SAE J- 1773 interface to provide voltage gain for power factor correction over the full AC line cycle. The operating frequency of the converter is modulated around the current-source frequency to regulate the output power from zero to full load.

REFERENCES:
patent: 5099186 (1992-03-01), Rippel et al.
patent: 5412287 (1995-05-01), Shackle
patent: 5594632 (1997-01-01), Barrett
patent: 5666042 (1997-09-01), Lewis

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