Abstract
A variable-frequency electronic ballast to shorten the projector lamp startup transition with feature of power factor correction is proposed in this paper. The circuit topology is composed of a boost converter as 1st stage and a half-bridge series-resonant parallel-load inverter together with a single-stage step-up igniter as 2nd stage. A 120W prototype was built to test and verify the characteristics of the proposed projector lamp ballast at start-up and steady state conditions. It was found that start-up time was reduced by nearly 50% and a high power factor above 0.98 could be achieved. In addition, the power converter is designed to operate at zero-voltage-switching to reduce power losses. Experimental results show good performance, verifying the functionality of the proposed ballast.
| Original language | English |
|---|---|
| Pages (from-to) | 213-219 |
| Number of pages | 7 |
| Journal | PESC Record - IEEE Annual Power Electronics Specialists Conference |
| Volume | 1 |
| Publication status | Published - 2002 Jan 1 |
| Event | 2002 IEEE 33rd Annual Power Electronics Specialists Conference (PESC) - Cairns, Australia Duration: 2002 Jun 23 → 2002 Jun 27 |
All Science Journal Classification (ASJC) codes
- Modelling and Simulation
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering