高精準電流雙向充/放電器

Bi-directional Charger/Discharger with High Current Precision

王正宇(Cheng-Yu Wang)

指導教授 ： 余國瑞 ； 吳財福

國立中正大學/工學院/電機工程學系/碩士(2013年)

摘要

本論文主要說明高精準電流雙向充/放電器之分析、設計和製作，此充/放電器將結合具功因修正之交流/直流雙向換流器、直流/直流雙向轉換器和人機介面LabVIEW，組成一部電池能量回收系統。本系統之配置方式能將充電電池組和放電電池組同時進行充/放電測試，使放電能量能供給充電所需能量，達到能量循環使用，並可以將多餘放電能量回收併入市電，可大幅減少電池模組組裝廠之用電量。
本研究實際製作三組充/放電器與人機介面LabVIEW系統，來對電池組進行充/放電測試，並且對充/放電器進行高精準電流探討，其方法主要包括"擾動觀察法"、"回授電流多點取樣平均法"和"絕對參考準位法"。依據電池廠所訂定之輸出電流精準度為滿載電流的0.5%來測試、驗證本研究所研製之充/放電器。

關鍵字

雙向充/放電器

並列摘要

This thesis presents analysis, design and implemention of bi-directional charg-ers/dischargers with high current precision. The charger/discharger combines an AC/DC bidirectional inverter with power factor correction, LabVIEW hu-man-machine interface to form a battery energy recovery system. This system allows batteries to be charging and discharging with energy circulation at dc link. The dis-charged energy of the batteries can be recycled to charge batteries, and the excess discharged energy can be recycled with a grid-tied inverter, reducing power consump-tion during battery charging and discharging test process significantly.
In this study, we built three chargers, three dischargers and a LabVIEW hu-man-machine interface to verify the energy-recycle function and the feature of high current precision. The study method is based on a "perturbation and observation ", "average of multi-point current sampling" and "absolute reference level correction" methods. The current precision has been verified to comply with the regulation of 0.5% of the full load current.

並列關鍵字

Bi-directional Charger/Discharger with High Current Precision

參考文獻

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