Passive Mitigation Technique for the Harmonics Caused by LED Lamps

Abstract

LED technology is being increasingly used in modern electricity distribution networks. Due to their low energy consumption they represent a sanctuary for the continuous increase in energy prices in Egypt. LED lamps requires low DC power, hence they use power electronic converters in order to be implemented in local electricity distribution networks. These power supplies produce various harmonics profiles based on the ratings and brands of LED lamps. These accumulated harmonics could cause negative impacts on electrical equipment in electricity distribution networks. Therefore, an evaluation study for various types and brands of lamps is done in this research based on both magnitude and phase angle of each individual harmonic. After analyzing the results, mitigation method will be presented and investigated depending on their effectiveness and feasibility. All measures are done using Network Analyzer a-eberle PQ Box 200.