This paper presents a LED indictor driving circuit with a PV arrays as its power source. The LED indictor driving circuit includes battery charger and discharger (LED driving circuit). In this research, buck converter is used as a charger, and forward converter with active clamp circuit is adopted as a discharger to drive the LED indictor. Their circuit structures use switch integration technique to simplify them and to form the proposed hybrid converter, which has a less component counts, lighter weight, smaller size, and higher conversion efficiency. Moreover, the proposed hybrid converter uses a perturb-and-observe method to extract the maximum power from PV arrays. Finally, a prototype of an LED indictor driving circuit with output voltage of 10 V and output power of 20 W has been implemented to verify its feasibility. It is suitable for the LED inductor applications. © 2013 Elsevier Ltd. All rights reserved.
Tseng, S. Y., Wang, H. Y., & Chen, C. C. (2013). PV power system using hybrid converter for LED indictor applications. Energy Conversion and Management, 75, 761–772. https://doi.org/10.1016/j.enconman.2013.08.025