Switched Capacitor Energy Buffer Architecture
High energy density because the switching network is operated such that while the voltage seen at the buffer port varies only over a small range, the voltage of the individual capacitors varies over a wide range.-Longer life and higher reliability because film capacitors are used instead of electrolytic capacitors.-High efficiency because the switching network need operate at only very low (line-scale) switching frequencies.-Reduce loss by taking advantage of soft charging of the energy storage capacitors.-High efficiency across the full operating range because the proposed buffer architecture exhibits losses that reduce as energy buffering requirements reduce.
Power conversion systems
None
Inventor: POON, Ngaikit, Franki | PONG, Manhay | LIU, Chiupong, Joe
Priority Number: WO2005046038A1
IPC Current: H05B004128 | H05B0041282 | H05B0041392
Assignee Applicant: The University of Hong Kong
Title: DIMMABLE BALLAST WITH RESISTIVE INPUT AND LOW ELECTROMAGNETIC INTERFERENCE | BALLAST A INTENSITE REGLABLE A ENTREE RESISTIVE ET FAIBLE NIVEAU D'INTERFERENCE ELECTROMAGNETIQUE
Usefulness: DIMMABLE BALLAST WITH RESISTIVE INPUT AND LOW ELECTROMAGNETIC INTERFERENCE | BALLAST A INTENSITE REGLABLE A ENTREE RESISTIVE ET FAIBLE NIVEAU D'INTERFERENCE ELECTROMAGNETIQUE
Summary: Alternating current to alternating current conversion apparatus for ballast or gas discharge lamp, cold cathode fluorescent lamp, high intensity discharge (HID) lamp.
Novelty: Alternating current-alternating current power conversion apparatus for e.g. fluorescent lamp, has terminal which is connected through primary winding to voltage source that charges or discharges capacitor within pulsating cycle
Optics
Lighting
USA
