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李澤元講座教授頒授聘書暨專題演講:Is GaN a Game Changer?

演講公告
張貼人:網站管理員2公告日期:2017-04-21
Is GaN a Game Changer?
 國立交通大學電機工程學系
李澤元講座教授頒授聘書暨專題演講
Is GaN a Game Changer?
Chair Professor Fred C. Lee
University Distinguished Professor and Director, Center for Power Electronics Systems, Virginia Tech
演講時間:2017年4月28日星期五14時
入場時間:2017年4月28日星期五13時45分
演講地點:工程四館816室(智易創意空間)
報名網址:https://goo.gl/forms/6Vo9N4nNfTfvJwV62
聯絡資訊:03-5712121#54431 講者簡介:
李澤元講座教授(Chair Professor Fred C. Lee)為美國維吉尼亞理工州立大學(Virginia Tech)電機電腦工程學系(Department of Electrical and Computer Engineering)特聘教授暨電力電子系統中心(Center for Power Electronics Systems)主任,也是臺灣中央研究院院士,迄今已發表超過277篇期刊論文及擁有82個美國專利,研究興趣包括高頻電能轉換、分散式電能系統、可再生能源等,並榮獲2015年國際電機電子工程師學會電力工程獎章(2015 IEEE Medal in Power Engineering)。
演講大綱:
In today’s power electronics products, quality and reliability are given, great emphases are placed on high efficiency, high power density and low cost. Further advances alone these areas will be closely linked to advancement we can make in the area of power devices and materials and fabrication techniques. With recent advances made in wide-band-gap (WBG) power devices, I believe the new generation of switches will make significant impacts to all three areas mentioned above.
It is evident that, for any given design, if you simple replace silicon devices with WBG, you will gain an improvement in efficiency. Although it is an important contribution, to leave it at that, it does not do the justice to WBG. It is also clear that WBG devices can operate at much higher frequencies compared to their silicon counterparts. Consequently, as much as a factor of 5-10 reduction in size/weight using WBG are achievable and have been demonstrated in some applications. Still it leave it at that, it does not realize the full potential of WBG.
If we can design a converter with 10X, 20X or even 50X in switching frequency, comparing to our current practice using silicon devices, what has been taken for granted in our design practice is being challenged. Certain design trade off previously inconceivable can be realized with not only significant performance enhancement but also drastic reduction of the labor contents in the manufacturing and assembly process.
最後修改時間:2017-04-21 AM 9:49

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