Power factor corrected UPS with improved connection of battery to neutral
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 15, 2005
Grant Date -
Jul 24, 2003
app pub date -
Mar 3, 2003
filing date -
Mar 3, 2003
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
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International Classification(s)
- 2003 Application Filing Year
- H02M Class
- 600 Applications Filed
- 246 Patents Issued To-Date
- 41 % Issued To-Date
Cited Art Landscape
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