A zero-voltage-switching (ZVS) push-pull DC/DC converter for UPS
作者： Jianping Ying , Qiuhua Zhu , Hua Lin , Zhigan Wu
DOI: 10.1109/PEDS.2003.1283206
关键词: Electronic engineering 、 Ćuk converter 、 Electrical engineering 、 Uninterruptible power supply 、 Forward converter 、 Boost converter 、 Duty cycle 、 Flyback converter 、 Computer science 、 Double switching 、 Charge pump
摘要: This paper presents a control scheme that is very suitable for the DC/DC converter in uninterruptible power supply (UPS) systems. Based on this scheme, ZVS push-pull proposed. With heavy load, or during latter stage of battery discharge with light will operate duty cycle fixed to near 0.5, thus primary switches can under condition help transformer magnetizing current. commutation and double switching frequency, magnetic core online 3 kVA UPS Delta Company reduced from two pairs one pair EE55. And efficiency improved be kept same level as original hard spite frequency.
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