實現具有單相功率因素修正之高功率全數位電池充電器

Implementation of a DSP-based High Power Battery Charger with Single Phase Power Factor Correction

徐聖宇(Sheng-Yu Hsu)

指導教授 ： 黃明熙

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00131

摘要

有鑒於使用鋰電池之輕型電動載具已逐漸取代燃油機車作為短距離之個人交通工具，因此本文主要是研製鋰電池快速充電所需之高功率交流-直流轉換器。此轉換器是以數位訊號處理器為控制核心，建構前級為具有主動功率因素修正之單相交流-直流轉換器與相移全橋直流-直流轉換器之輸出級，此雙模組以串聯方式連接。前級之主動功率因素修正可有效地提升功率因素，以增加電源插座之利用率及降低電流諧波對其他用電設備之干擾；後級之相移全橋直流轉換器除具有電氣隔離外，尚可對電池進行定電壓與定電流充電。
為降低成本、簡化控制與降低不同模組功率晶體切換所造成之干擾問題，系統僅使用一只數位訊號處理器dsPIC30F2023同時調控兩級轉換器。所提之控制策略以組合語言撰寫，以縮短軟體執行時間，最後經由實驗來驗證所提方法與建構系統之有效性。

關鍵字

單相功率因素修正器 ； 相移全橋直流轉換器 ； 充電器

並列摘要

Because Light electrical vehicle uses lithium-ion battery as power source has steadily replaced gasoline-fueled scooter for personal short-distance transportation, this paper focus on the research of high power ac-dc converter used for fast-charging lithium-ion battery. The converter is controlled by digital signal process, and it is constructed in series by single phase ac-dc converter, which can active power factor correct as its front-end stage and phase shifted full-bridge dc-dc converter as its output stage. The front-end stage of active power factor correction can effectively increase power factor to increase the usage of electric outlet and to lower the interference on other electrical facility from current harmonic. The power stage of phase shifted full-bridge dc-dc converter is insulated by electric, and it can also charge the battery under constant-voltage and constant-current condition.
In order to lower the cost, simplify the control and lower the interference by different module power switch, the system used only one digital signal process, dsPIC30F2023, to control two stage converter simultaneously. Driver is composed by assembly language to lower the processing time. Finally, the effectiveness of our method will be verified by experiment.

並列關鍵字

Single Phase Power Factor Correction ； Phase-Shifted Full Bridge Converter ； Charger

參考文獻

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