Switched Zeta-Derived Topology Based On Modeling and Simulation for Lighting Load
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 6
Abstract
High brightness white light emitting diodes (LEDs), has been attracted a lot of attention for general lighting applications conventional light bulbs in domestic, commercial, and industrial environments with high efficacy, longer lifespan, more compact size and environmental issues. The paper deals a quasi-active power factor corrector (PFC) and accurate current control for driving a string of HB LEDs. The proposed power supply for LED also is required for long lifespan, while maintaining high efficiency, high power factor, and low cost. However, a typical power supply design with an electrolytic capacitor as the storage operation, which is not only bulky, but also with a long lifetime, thus hampering performance correction of the entire LED lighting system. In this paper, a novel power factor correction (PFC) topology is employed by inserting the valley-fill circuit in the single-ended primary inductance converter (zeta)-derived DC-DC topology, which does not increase the voltage/current stress on the active switch used in the switching converter due to PFC. LED driver consist of diode bridge rectifier and resister to avoid the damage of LED by the higher current, because of this circuit is less efficient and approximately it is 20-30% efficient. This valley-fill zeta-derived topology operates in continuous conduction mode (CCM) in AC mains for universal input. Each LED has a 12V forward voltage and 0.25A forward current. There is some power quality indices such as total harmonic distortion of AC mains current (THD), distortion factor (DF), power factor (PF), crest factor (CF) and displacement power factor (DPF) are determine the characteristics of proposed LED lamp driver. The design, simulation and modelling of PFC zeta-derived DC-DC topology simulated in MATLAB/SIMULINK environment.
Authors and Affiliations
Aamir Malik, Ankur Kumar, Abhishek Anand, Intesh Kumar
Keywords
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