Abstract
Traditional ac-dc LED drivers include a large electrolytic capacitor to decouple the double-line frequency ripple power from the utility grid, which shortens the lifespan of LED lamps. This paper presents an electrolytic capacitor-less ac-dc LED driver with a low power processing auxiliary circuit and ceramic capacitors decoupling the ripple power. In this structure, the redundant power processed by the auxiliary circuit is lower and fewer components are used, comparing with existing similar designs. In addition, the ceramic capacitors that are used as the energy storage have higher energy density and lower cost. The capacitance drift of ceramic capacitors is modeled and analyzed, and the parameter design for the ceramic capacitor bank is given. Experiments on a prototype are carried out to verify the performance and design of the proposed LED driver.
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 5101-5108 |
| Number of pages | 8 |
| ISBN (Electronic) | 9781479973118 |
| DOIs | |
| State | Published - 3 Dec 2018 |
| Externally published | Yes |
| Event | 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: 23 Sep 2018 → 27 Sep 2018 |
Publication series
| Name | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
|---|
Conference
| Conference | 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
|---|---|
| Country/Territory | United States |
| City | Portland |
| Period | 23/09/18 → 27/09/18 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Ac-dc power conversion
- Electrolytic capacitor less
- LED driver
- Ripple power decoupiing
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