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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Novel On-Line Maximum Duty Point Tracking Technique to Improve Two-Stage Server Power Efficiency and Investigation Into Its Impact on Hold-Up Time
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Novel On-Line Maximum Duty Point Tracking Technique to Improve Two-Stage Server Power Efficiency and Investigation Into Its Impact on Hold-Up Time

机译：新型在线最大占空比点跟踪技术，可提高两阶段服务器的电源效率，并调查其对保持时间的影响

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The main theme of this paper is to propose a novel on-line maximum duty point tracking (MDPT) technique to improve the efficiency of the server power. The server power consists of a power factor corrector (PFC) and a phase-shift full-bridge (PSFB) converter. The proposed MDPT technique controls the dc-link voltage of the PFC to retain the maximum duty of the PSFB converter, thereby reducing the circulating loss and switching losses of the converter. It will be shown that the overall efficiency can therefore be significantly improved to meet the 80 PLUS Gold code. Moreover, the impact of the proposed MDPT control on the hold-up time is investigated. It will be shown that the dc-link capacitance should be increased in order to give the same hold-up time. The experimental system is set up using a digital signal processor as the digital controller. The specifications of the server power supply include: $hbox{ac input voltage} = 110/220 hbox{V}$, $hbox{dc output voltage} = 12 hbox{V}$, and $hbox{output power} = 480 hbox{W}$ . Experimental results show that the efficiency can be improved from light-load to full-load conditions. It will be shown that the efficiency can therefore be improved up to 2.52% to meet the 80 PLUS Gold code. These results confirm the effectiveness of the proposed MDPT technique.
机译：本文的主题是提出一种新颖的在线最大占空比跟踪（MDPT）技术，以提高服务器电源的效率。服务器电源由功率因数校正器（PFC）和相移全桥（PSFB）转换器组成。提出的MDPT技术控制PFC的直流链路电压，以保持PSFB转换器的最大占空比，从而减少转换器的循环损耗和开关损耗。结果表明，可以大大提高整体效率，以满足80 PLUS金牌标准。此外，研究了建议的MDPT控制对保持时间的影响。将显示，应增加直流链路电容，以提供相同的保持时间。使用数字信号处理器作为数字控制器来建立实验系统。服务器电源的规格包括：$ hbox {ac输入电压} = 110/220 hbox {V} $，$ hbox {dc输出电压} = 12 hbox {V} $和$ hbox {输出功率} = 480 hbox {W} $。实验结果表明，从轻载到满载条件，效率都可以提高。结果表明，效率可以提高到2.52％，以满足80 PLUS Gold编码。这些结果证实了所提出的MDPT技术的有效性。

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