Welcome to High Power Devices and Circuits Group

Renewable Energy

(1) Solar PV System

  In an attempt to solve the issues related to the limited space available in an urban area and low power output, we design a single-axis sun tracker which is mounted on the side of a wall on the roof to create more space for the installation within the limited area available on the rooftop of a building in an urban area. We also develop a novel algorithm for the sun tracker in order to identify the optimal stopping angle for generating the maximum amount of power. The algorithm is briefly described below. First, PV modules automatically rotate from 50° east to 50° west; meanwhile, the instantaneous power generated at different angles and the corresponding irradiation is recorded, meaning that the optimal angle for generating the maximum power can be determined. Once the rotation (detection) is completed, the PV modules are then rotated to the resulting angle for generating the maximum power. The PV module is rotated once per hour to detect the maximum irradiation and overcome the impact of environmental effects such as shading from cloud cover, other PV modules and surrounding buildings. Furthermore, the detection frequency is further reduced to once every two hours and once every three hours, and the detection range is also halved so as to reduce the power consumption from the rotation operations and to improve the stability of the tracker, dependent on the timing and weather conditions.​

(2) Wind Energy

  In order to increase the efficiency of the wind turbine installed on the roof of a building, we use 3D ultrasonic anemometers to analyze the measured results and computational fluid dynamics (CFD) simulation results. Based on the analysis, we try to find out the solutions for better locations and height for a wind turbine with higher efficiency. I also work with IEA Task 27 SWAT to provide testing results for the new Recommended Practice for Design of Small Wind Turbines in the Built Environment.

(3)Kuroshio Energy

  With the lack of energy today, green energy has become an important indicator of global development. Taiwan is a typical island-type country, the eastern part of the Kuroshio has a lot of economic benefits. Our lab is dedicated to the related research of Kuroshio power generation system, including the dynamic model of permanent magnet synchronous generator, the control of power generation system, the frequency conversion and the grid connection. Combined with power system, power electronics and control theory, ANSYS and MATLAB / Simulink, to do the computer simulation and analysis of Kuroshio power generation system, and finally through the Kuroshio generator experimental platform to measure the generator data, and simulation results with each other to verify. In the future, we can use the Kuroshio ocean energy, to solve the problem of lack of energy.

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再生能源

(1) 太陽能

  為了解決低功率輸出和市區內空間有限的問題，我們設計了單軸追日太陽能系統，並把它安裝在頂樓的牆壁上，有效利用空間，成功解決了市區內空間有限的問題。另外，我們還開發了新的方法來追蹤太陽稱為1AMPG，可以控制太陽能板找到瞬間發電最大功率的停駐角，追蹤的方法如下，首先，太陽能板自動從50°東旋轉到50°西，同時記錄在不同角度下產生的瞬間功率和對應的輻射量，就可以確定產生最大功率的最佳角度，接著太陽能板會旋轉到剛剛確定的最佳角度以產生目前的最大功率。並且太陽能板會每小時搜索一次，除了檢測最大輻射以外還可以克服環境影響，例如雲層遮擋、其他太陽能板干擾或是建築屋的遮蔭。此外，根據需求或天氣條件，檢測頻率可以減小為兩到三個小時一次，或是搜索角度減半，以便減少自動旋轉時所消耗的功率並提高系統的穩定性。

(2) 風力能源

  為了提高安裝在建築物屋頂上的風力發電機的效率，我們使用3D超聲波風速儀來分析測量結果和計算流體動力學（CFD）模擬結果。 基於該分析，我們試圖找到用於具有更高效率的風力渦輪機的更好的位置和高度的解決方案，為建築環境中小型風力發電機的新建議實踐提供測試結果。

(3)黑潮能源

  隨著現今能源的缺乏，綠色能源已成為全球發展的重要指標。台灣為典型的海島型國家，東部海域的黑潮擁有很大的經濟效益。本實驗室致力於黑潮發電系統的相關研究，其中包括永磁同步發電機的動態模型、發電系統的控制、變頻以及併網，並結合電力系統、電力電子以及控制理論，運用ANSYS以及MATLAB/Simulink，來做黑潮發電系統的電腦模擬以及分析，最後再透過實驗室的黑潮發電機實驗平台，量測發電機的數據，並與模擬結果相互驗證。期許在未來，能夠運用黑潮的海洋能，解決能源缺乏的問題。