研究目的
Investigating the design and performance of a low cost, high performance non-electrolytic-capacitor based LED driver for street light applications.
研究成果
The proposed flyback converter based LED driver with a CLC π filter achieves unity power factor operation, reduced LED current ripples, and high reliability without the need for an electrolytic capacitor. The design offers a cost-effective and compact solution for street light applications, validated through simulation and experimental results.
研究不足
The study focuses on a specific application (street light LED drivers) and may not cover all possible LED driver configurations. The experimental validation is limited to a 12.5W LED setup.
1：Experimental Design and Method Selection:
The study adopts a fly-back based single-phase line-rectifier for the LED driver design, with the flyback converter’s duty cycle designed offline to achieve unity power factor without an input filter. A double line frequency π-network CLC filter is utilized, featuring a reduced-value long-life ceramic non-polarized capacitor.
2：Sample Selection and Data Sources:
A 12.5W LED powered from AC grid is used for simulation and experimental validation.
3：5W LED powered from AC grid is used for simulation and experimental validation.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The hardware prototype includes a flyback converter, CLC π filter with ceramic capacitors, and inductors. Simulation is performed using PSIM? software package.
4：Experimental Procedures and Operational Workflow:
The three topologies (single stage with large electrolytic capacitor, single stage with small ceramic capacitor, and proposed single stage with CLC π filter) are simulated and experimentally tested to compare performance.
5：Data Analysis Methods:
The performance is evaluated based on power factor, LED current and voltage ripples, and component count.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
