Resonant Switched-capacitor Auxiliary Circuit for Active Power Decoupling in Electrolytic Capacitor-less AC/DC LED Drivers
Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45) › 32_Refereed conference paper (with ISBN/ISSN) › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Title of host publication | Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE) |
| Publisher | IEEE |
| Pages | 866-871 |
| ISBN (Electronic) | 9781728103952 |
| ISBN (Print) | 9781728103969 |
| Publication status | Published - Sep 2019 |
| Externally published | Yes |
Publication series
| Name | IEEE Energy Conversion Congress and Exposition, ECCE |
|---|
Conference
| Title | 11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019) |
|---|---|
| Place | United States |
| City | Baltimore |
| Period | 29 September - 3 October 2019 |
Link(s)
Abstract
This paper introduces an auxiliary circuit that is used to buffer double-line-frequency ripple power and form electrolytic capacitor-less single-phase AC/DC LED drivers. The proposed auxiliary circuit is implemented by a resonant switched capacitor circuit behaving as a gyrator circuit, namely a voltage-dependent current source. The output current of the auxiliary circuit is regulated with constant on-time and hysteresis control schemes. Comparing with other alternative methods, the proposed auxiliary circuit has less power loss due to its zero-current switching (ZCS) operation, and includes smaller passive components because of its higher operating frequency (about 3 MHz). An LED driver prototype with the proposed auxiliary circuit is built, and the experimental results are given to verify the proposed topology and the parameter design.
Research Area(s)
- ac–dc power conversion, ripple power decoupling, electrolytic capacitor less, LED driver, esonant switched-capacitor circuit
Citation Format(s)
Resonant Switched-capacitor Auxiliary Circuit for Active Power Decoupling in Electrolytic Capacitor-less AC/DC LED Drivers. / Zhenyu Shan; Xiaomei Chen; Shengwen Fan et al.
Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. p. 866-871 8912977 (IEEE Energy Conversion Congress and Exposition, ECCE).Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45) › 32_Refereed conference paper (with ISBN/ISSN) › peer-review
