未來研究建議

本文中針對無刷直流馬達控制採用的 方波電流控制法時，其電流換相時 變化劇烈，而且因馬達反抗電動勢為弦波，馬達未能達到最佳工作效率。未來可 以在電流控制中可加入軟切換(Soft Switching)控制，在馬達換相前提早緩慢降低 開關責任週期比，降低其相電流變化斜率，使其相電流能與反抗電動勢更有效率 地耦合，在不變的馬達扭力下，降低馬達相電流有效值，提升整體效能。

120o

傳統的設計流程為VOPFC及輸入EMI濾波器採用各自獨立設計，但是由以上 討論可知兩系統之間會互相影響，所以加入濾波器後，VOPFC原先設計好的響 應會被破壞。為了確保系統能具有良好的響應能力且輸入諧波成分符合法令規 範，必須針對VOPFC發展一套EMI濾波電路的設計流程；針對各自系統設計，以 達到對原先控制響應最低影響且有效降低輸入諧波成分以符合規範。

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作 者 簡 介

Chia-Hao Wu was born in Taichung, Taiwan, R.O.C., in 1983. He received the B.S. degree in electrical and control engineering from National Chiao-Tung University, Hsinchu, Taiwan, in 2007 and is currently pursuing the M.S. degree in electrical engineering at National Chiao Tung University, Hsinchu, Taiwan. His research interests are in the areas of brushless dc motor control, PFC converter design, and digital controller realization.

個人資料

姓 名：吳家豪 (Chia-Hao Wu) 生 日：民國 72 年 9 月 19 日 出 生 地：台灣省台中縣

專 長：控制理論、電力電子、

數位控制器設計、電動機理論

論文題目: 中文: 具有可調輸出電壓功因修正器之無刷直流馬達驅動器 的效率改善策略

英文: Efficiency Improvement Strategy of a BLDC Motor Drive Using a PFC Converter with Adjustable Output Voltage

學 歷

2007.9~2009.9 交通大學電機與控制工程研究所 2002.9~2007.6 交通大學電機與控制工程學系