- 學位論文
並聯分流控制與節能實現高效率伺服器電源
Current Sharing Control and Energy Saving to Achieve High Efficiency Server Power
摘要
本文提出分流控制與節能控制方法實現於伺服器電源供應器，讓多組伺服器電源在並聯使用上能夠精準控制輸出電流與系統的穩定度，且使用節能方法提升主動式功率因素校正器效率。 本文提出了兩種控制方式使用，方法一：主動均流法控制並搭配快速防止逆灌控制方法，去控制多組電流的輸出，能使輸出電流精準度能達到百分之五以內，且電源並聯使用上不會互相受到干擾，且能提高整體輸出的效率，方法二：節能模式增加一控制方式能夠依照負載條件去調整主動式功率因數校正器的電壓與頻率讓這兩個條件能夠在不同負載下調整到最佳效率。 最後我們設計製作一組 600瓦電源供應器原型機並驗證，得到的結果能完全達到要求。 本論文的貢獻如下： 1.電流均流：能提供伺服器系統多組電源並聯備援使用,且多組使用都可以得到電流平均的效果，且不受到其他電源的干擾 2.節能模式：能將主動式功率因數校正器設計在最佳化的操作點。
並列摘要
In this thesis, we use the current sharing control and energy-saving control to achieve in the server power supply. It can control current accurate in parallel mode and there would be not conflict each other. Energy saving is to improve efficiency under half load to meet 80Plus platinum efficiency. We provide two methods in this thesis. Method 1: We use active current share control method to improve current accuracy and fast OR-ing circuit can control output OR-ing MOSFET resistance to decrease reverses current at light load. Method 2: One circuit is added to control frequency and voltage of power factor correction at different loads, to study and calculate the optimal operating point. Finally, we design a 600-watt power supply prototype and verify that the results obtained can fully meet the requirements. The features of this thesis include as: 1. It can make current accurately in parallel mode and there would be not conflict each other. 2. It can improve power supply efficiency and design power factor correction at the optimal operating point.