Influence of Current Total Harmonic Distortion on Lamp Life

Aniruddha Mukherjee, M. K. Gupta

Abstract


The aspect of current THD has been widely studied and conceived in various lamp drivers. The AC-DC driver circuit of the LEDs available in the market is seldom equipped with input power factor and THD improvement circuitry as prescribed in IEC 61000-3-2. This is essential for maintaining the energy efficiency of the nearest utility services and in addition also improves on the current drawn by the device. The following work envisages these issues and proposes corrective driver circuit based on two different driver topologies, buck-boost topology and fly back topology. Both these topologies are proposed in order to address the aspects of power quality and its impact on the life of the device. It has been observed in most of the cases that the power factor and THD for non linear load like LED lighting deviates drastically from the standard specification. The work deals with the LED drivers that fail to achieve the desired recommendations. It further suggests the improvement circuitry for the same. Secondly the work also envisages the influence of THD on lamp lumen depreciation thus degradation of lamp life. It has been well established that light emitting diode shall invariably replace incandescent lamps and compact fluorescent lamps in smart cities. 


Keywords


Buck-boost, Flyback, LED drives, Lifetime, THD

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References


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