A General Photo-Electro-Thermal Theory for Light Emitting Diode (LED) Systems

被引：11

作者：

Hui, S. Y. R. ^{[1
]}

Qin, Y. X. ^{[1
]}

机构：

[1] City Univ Hong Kong, Ctr Elect Power, Hong Kong, Hong Kong, Peoples R China

来源：

APEC: 2009 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, VOLS 1- 4 | 2009年

关键词：

D O I：

10.1109/APEC.2009.4802712

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The photometric, electrical and thermal features of LED systems are highly dependent on one another. By considering all these factors together, it is possible to optimize the design of LED systems. This paper presents a general theory that links the photometric, electrical and thermal behaviors of a LED system together. The theory shows that the thermal design is an indispensible part of the electrical circuit design and will strongly influence the peak luminous output of LED systems. It can be used to explain why the optimal operating power, at which maximum luminous flux is generated, may not occur at the rated power of the LEDs. This theory can be used to determine the optimal operating point for a LED system so that the maximum luminous flux can be achieved for a given thermal design. The general theory has been verified favorably by experiments using high-brightness LEDs.

引用

页码：554 / 562

页数：9

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