PWM Dimming Module Allowing Wide DC-Link Voltage Variation
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)
Related Research Unit(s)
Detail(s)
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE Applied Power Electronics Conference and Exposition (APEC) |
| Publisher | IEEE |
| Pages | 423-428 |
| ISBN (Electronic) | 9781538611807 |
| Publication status | Published - Mar 2018 |
Publication series
| Name | Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC) |
|---|---|
| Publisher | IEEE |
| ISSN (Electronic) | 2470-6647 |
Conference
| Title | 33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018) |
|---|---|
| Location | Henry B. Gonzalez Convention Center |
| Place | United States |
| City | San Antonio |
| Period | 4 - 8 March 2018 |
Link(s)
Abstract
A dimming module that can generate current pulses of variable pulse width, frequency, and amplitude supplying to LEDs from a DC source with high voltage ripple will be presented. The module is connected in series with the LEDs and acts as a buffer between the DC source and LED. Thus, its volt-ampere (VA) rating is much smaller than the power rating of the LED and the power density of the overall system is maximized. The module can regulate the LED current pulses, even if the source voltage has a wide fluctuation. The operating principle of the whole system is described in the paper. A 400V/100W prototype has been built and tested with a 330V LED string with the source having a ripple of ±20V. The peak value of the LED current pulses has a variation of ±1.5%. Its dynamic behaviors under voltage fluctuation will also be investigated.
Citation Format(s)
PWM Dimming Module Allowing Wide DC-Link Voltage Variation. / Cheung, Victor Sui-pung; Chow, Jeff Po-wa; Fan, John Wing-to et al.
2018 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2018. p. 423-428 (Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)).Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45) › 32_Refereed conference paper (with ISBN/ISSN) › peer-review
