應用於太陽能之高效率的電源管理系統

Abstract

在本篇論文中，我們將目標放在設計並實現一個應用於太陽能之高效率的電源管理系統。其中包含電壓調節器和交換式電容直流-直流轉換器、高電壓電荷幫浦以及太陽能最大功率追踪控制電路設計。主要的研究成果如下： 1. 在本篇論文中提出了一個可應用於太陽能之高效率的電源管理系統。本系統藉由太陽能採集能量，並且產生不同的電壓位準以應用於SoC電壓調節 (例如:1V~0.3V提供給類比電路和低功率數位電路，-1.2V提供給記憶體電路，5V提供給I/O元件)。 2. 一個新的連接架構用於改善高電壓電荷幫浦的能量效益和提升負載能力被提出。 3. 提出了一個可應用於太陽能最大功率追踪電路以控制太陽能電池位於最大功率區域並整合至功率管理系統中，使系統可對電池補充能量，並且有效率的利用電池的能量。

The goal of this research is to design and implement a high efficiency power management system for solar energy harvesting applications. This includes the design of voltage regulator and switched capacitor DC-DC converter, high charge pump and PV cell maximum power tracking control circuit. The major contributions of this thesis are list as follow: 1. A high efficiency power management system for solar energy harvesting applications is proposed. The power management system receives power from photovoltaic (PV) cell and generate different voltage levels which are suitable for SoC integrated regulator applications (such as 1V~0.3V for analog circuitry and low power digital circuitry, -1.2V for memory circuitry, and 5V for I/O components). 2. A novel connect scheme for improving power efficiency and loading capability of charge pump which generates ultra high voltage is proposed. 3. A maximum power tracking circuit for controlling PV cell in maximum power region is proposed and integrated to the power management system for solar energy harvesting applications. The power management system works with a rechargeable battery and uses the energy of battery efficiently.