Power converter method and apparatus having high input power factor and low harmonic distortion
作者： Vivek Agarwal , Alain Calmels , Victor Prince Sundarsingh , Serge Bontemps
DOI:
关键词: Electronic engineering 、 Buck converter 、 Power factor 、 Boost converter 、 Engineering 、 Flyback converter 、 Forward converter 、 Uninterruptible power supply 、 Duty cycle 、 Flyback transformer
摘要: The invention proposes a single stage, switch, input-output isolated converter configuration using hybrid combination of forward and flyback converters. operates at high input power factor with regulated DC output voltage. It makes use novel control scheme utilizing duty cycle two discrete operating frequencies. Although the employs frequencies, it does not continuous frequency variation. proposed has advantage reduced peak current stresses on components is specifically suited for ‘buck’ applications where low voltages (e.g. 24V, 48V) are needed. will be specific interest to industries associated battery charging uninterruptible supply (UPS) systems. Apart from having several competitive features compared prior art techniques, dual operation reduces amplitude its noise spectrum by spreading over wider range thus making more electromagnetic compatible.
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