具有能量回收與快速動態響應之新型電池測試系統

本論文主要在研製電池測試系統，除可對電池提供定電流與定電壓模式充電外，可對電池進行放電測試並將能量回送至電網達到節能之效果。所提之轉換器包含兩級雙向轉換器，前級之轉換器在充電模式下為單相交流-直流轉換器，在放電模式下則為單相直流-交流轉換器可進行能量回收；另外，為提高用電品質所提之雙向直流-交流轉換器是具有功率因數接近一之調控。第二級為一具隔離之雙向直流-直流轉換器，用來對電池進行充電與放電之調控。該雙相直流-直流轉換器是由兩組全橋電路、一只高頻變壓器與一只置於電池前端的LC低通濾波器所組成。當對電池充電時，所提之直流-直流轉換器是工作在全橋相移模式，由電池前端之LC低通濾波器及以軟體建構直流鏈電壓漣波補償器來降低輸入電池之電流漣波。當工作於放電模式下，直流-直流轉換器是以電流饋入模式將低壓側之電池能量經由直流-交流轉換器傳回電網。另外，為提高放電電流之控制範圍，使用一只輔助開關使最低之可控制電流達到0.1A。本文所提之電池測試系統架構是以一只數位訊號處理器作為控制核心配合必要之周邊，建構110V/60Hz/1000W/48Vdc之轉換器，以電動機車用之鋰電池模組驗證所提控制策略之有效性。

關鍵字

雙向直流-直流轉換器；雙向直流-交流轉換器；數位訊號處理器

並列摘要

The main theme of this thesis is to develop bi-directional converter for battery test of electrical scooter. The proposed system can not only provide constant current and constant voltage to charge the battery but also send energy back to utility to achieve energy saving in the discharge mode. The proposed converter consists of two bi-directional stages, including front end and second stage. The front end is a single-phase AC-DC converter under charging mode operation. It becomes a DC-AC converter as recovering energy. Meanwhile, the front end converter also provides near unity power factor control to achieve better power quality. The second stage is an isolated bidirectional DC-DC converter which simulates the charge and discharge behavior of battery. The bi-directional DC-DC converter is constructed by two sets of full-bridge circuit, a high frequency transformer, and an LC low pass filter located in front of battery. The DC-DC converter is operated in phase shifted control and an LC filter and a DC-link ripple voltage compensator are added to reduce the current ripple to battery under charging mode. When the converter is under discharging mode, a current-fed full-bridge control is used to send the discharging energy from battery to grid through the DC-AC converter. For improving the current control range under discharging mode, an auxiliary switch is used to achieve 0.1A current control. In order to facilitate the studies performed in this thesis. A DSP-based converter with necessary peripherals is established to provide 110V/60Hz/single phase input and 1kW/48V output. After establishing the converter, some measured results on Li-ion battery for electrical scooter are provided to show its successful operation and effectiveness.

並列關鍵字

Bidirectional DC-DC converter ； Bidirectional DC-AC converter ； Digital signal processor

參考文獻

[18] 廖長鴻，「高功率雙向全橋直流/直流轉換器研製」，國立台北科技大學電機工程系碩士學位論文，民國九十九年。

[1] http://www.amitatech.com

[4] L. Gaillac, “Accelerated Testing of Advanced Battery Technologies in PHEV Applications,” The World Electric Vehicle Journal, Vol. 2, No. 2, pp. 83-92, 2008.

[5] M.S. Duvall, “Battery Evaluation for Plug-in Hybrid Electric Vehicles,” IEEE Conf. Vehicle Power and Propulsion, pp. 338-343, 2005.

[8] D.C. Erb, O.C. Onar, and A. Khaligh, “Bi-directional Charging Topologies for Plug-in Hybridelectric Vehicles,” in Proc. 2010 25th Annual IEEE APEC, pp. 2066-2072, 2010.

國際替代計量

具有能量回收與快速動態響應之新型電池測試系統

全文下載

主題瀏覽