本文研製具能量管理之電容去離子裝置淨水系統。所提之能量回收與回充功能，除了可將電容去離子裝置利用電吸附所儲存之電荷，透過雙向能量管理系統，將能量傳遞至超級電容之中，並可將超級電容中之電荷，再回充至電容去離子裝置。首先，本系統所提之數位控制器根據電容去離子裝置能量傳遞之需求，使用雙向升降壓轉換器特性配合磁滯控制，順利地在電容去離子裝置與超級電容之間達到雙向能量傳遞。其次，結合漸進式責任週期與雙頻控制技術，克服電容去離子裝置因等效串聯電阻過大而影響能量傳遞的現象，且解決離子吸附反應速度不均使回收時間較慢等問題。再者，所加入之雙向控制，可將回收之能量再回充至電容去離子裝置，以達到能量循環及降低能耗之目的。最後，建構一人機介面可觀測能量雙向傳遞之波形與效率等統計數據，及系統之動態變化。

This thesis develops a water purification system for capacitive deionization devices CDI with energy management. The proposed energy recovery and recharge functions not only can transfer the charge stored in the CDI by electrosorption to the supercapacitor through the proposed bidirectional energy management, but also recharge the charge stored in the supercapacitor to the CDI. First, the proposed digital controller smoothly achieves bidirectional energy transfer, by using a buck-boost converter with hysteresis control, according to the requirements of the energy transfer of the CDI. Moreover, combing the progressive duty cycle and dual-frequency control technigue renders the proposed system being able to improve the decreased transfer efficiency affected by the high equivalent resistance of the CDI, and to overcome the increased recovery time resulted from the uneven speed of the ion absorption Furthermore, the bidirectional control is used to recharge the recycled energy to the capacitive deionization device to achieve energy circulation and reduce energy consumption. Finally, a human-machine interface is constructed to observe statistical datas, such as the waveform, efficiency of energy bidirectional transmission, and dynamic changes of the system.

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