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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Enhancing Luminance of CCFL-Based Lighting Systems Using Low-Frequency Driving Techniques
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Enhancing Luminance of CCFL-Based Lighting Systems Using Low-Frequency Driving Techniques

机译：使用低频驱动技术增强基于CCFL的照明系统的亮度

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摘要

This paper proposes the luminance enhancement with low-frequency driving techniques for cold cathode fluorescent lamp (FL) (CCFL)-based lighting systems. The driver architecture features a full-bridge phase-shift inverter with a resonant tank and a three-winding step-up transformer to reduce leakage current, remove parasitic capacitance, enhance optical efficiency, balance and increase lamp uniformity, and achieve two-terminal high-voltage low-frequency driving of CCFLs. The low-frequency control of the driving technique is implemented in a field-programmable gate array controller to achieve luminance enhancement. The control strategy starts igniting the lamp with a high frequency and then reduces to low frequency in order to facilitate the linear increment of lamp brightness. Through the employment of this proposed approach, since the primary current of the transformers is only required, the circuit implementation can be completed with ease. Experimental results show that the proposed technique and control strategy help enhance luminance efficiency and reduce leakage current, demonstrating the practicality for the application considered.
机译：本文提出了基于低频驱动技术的基于冷阴极荧光灯（CCFL）的照明系统的亮度增强。该驱动器架构具有带谐振回路的全桥相移逆变器和三绕组升压变压器，以减少泄漏电流，消除寄生电容，提高光效率，平衡并增加灯的均匀性，并实现两端高CCFL的低压低频驱动。在现场可编程门阵列控制器中实现驱动技术的低频控制，以实现亮度增强。控制策略开始以高频率点燃灯，然后降低到低频以促进灯亮度的线性增加。通过采用这种提议的方法，由于仅需要变压器的初级电流，因此可以轻松完成电路实现。实验结果表明，所提出的技术和控制策略有助于提高亮度效率，减少漏电流，证明了所考虑的应用的实用性。

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