Energy density enhancement of unipolar SSC energy buffers through capacitance ratio optimization

Yu Ni, Saad Pervaiz, Minjie Chen, Khurram K. Afridi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

The recently proposed Stacked Switched Capacitor (SSC) energy buffer architecture with film or ceramic capacitors can increase the life of single-phase ac-dc converters by eliminating electrolytic capacitors needed for twice-line-frequency energy storage, while maintaining comparable energy density. This paper presents a methodology for further increasing the energy density of enhanced unipolar SSC energy buffers by optimizing the capacitance ratio of the capacitors used in the energy buffer. It is shown that the relative enhancement in energy density depends on the required ripple ratio and the number of supporting capacitors in the energy buffer. The presented methodology is validated using a 1-2 enhanced unipolar SSC energy buffer designed for an 8-W offline LED driver.

Original languageEnglish (US)
Title of host publication2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
PublisherIEEE Computer Society
ISBN (Print)9781479921478
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
Event2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014 - Santander, Spain
Duration: Jun 22 2014Jun 25 2014

Publication series

Name2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014

Other

Other2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
CountrySpain
CitySantander
Period6/22/146/25/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Modeling and Simulation

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    Ni, Y., Pervaiz, S., Chen, M., & Afridi, K. K. (2014). Energy density enhancement of unipolar SSC energy buffers through capacitance ratio optimization. In 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014 [6877121] (2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014). IEEE Computer Society. https://doi.org/10.1109/COMPEL.2014.6877121