Electronics and Telecom
 
Passive Lossless Snubber for Power Factor Corrector
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Principal Investigator 項目負責人
Professor CHUNG, Shu Hung Henry 鍾樹鴻教授 [ Profile ]
Professor, Department of Electronic Engineering 電子工程學系教授
Country
國家		Patent/Filing No.
專利/申請號		Description
發明名稱		Issued/Filing Date
授權公告/
專利申請日期		Status
狀態
US 12/556,450 Passive Lossless Snubber Cell for a Power Converter 09/09/2009 Pending
Stage of Technology Transfer:  Commercial viable technology/product ready for sale
Research Area:   Electronics and Telecom - Power Electronics
Abstract
During the turn-on and turn-off switching processes, power converters have to withstand high voltage and current, leading to high switching losses and stresses. The invention is a passive lossless snubber cell with minimum stress and wide soft-switching range. The energy reset / recirculation process is completed before a next energy absorbing process can commence.

Uniqueness and Competitive Advantage
• Zero-current-switching and zero-voltage-switching conditions for turning on and off
• No extra voltage stress on the switch

   

Applications
• For the production of power converters


Contact Information
Mr Tomson Lee, Senior Technology Transfer Officer
Address: Technology Transfer Office, City University of Hong Kong
Room 401, Festival Walk Tower, 80 Tat Chee Avenue
Kowloon Tong, Hong Kong
Tel: (852) 3442 6441/3442 6859
Fax: (852) 2265 8028
Email: thmlee@cityu.edu.hk
   
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