DESIGNING HARMONIC FILTERS IN LED LIGHT LOADS TO REDUCE CURRENT THD IN ODD ORDER

• Main Author: Claudia Meylinda, Vica
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/79086
• Institution: Institut Teknologi Bandung

The global lighting industry is currently transitioning to technological progress by making this sector energy efficient with the aim of helping mitigate climate change. In Indonesia, the use of Light Emitting Diode (LED) lamps is increasing, especially in the household and industrial sectors. LED lights are a nonlinear load that produces high harmonis which can come from several balast topologies used. Nonlinear loads produce a non-sinusoidal voltage waveform which allows it to influence other loads connected to the network system. As the number of consumers increases, it can represent a nonlinear load that causes increased harmonics and poor power quality. The aim of this research is to design an appropriate harmonic filter to reduce the odd THDI order in LED lighting loads in accordance with the SNI IEC 61000-3- 2:2014 standard. To reduce the harmonic value, a harmonic filter is needed, where in this research the harmonic filter used is a passive harmonic filter, namely a single tuned passive filter, second order passive filter, c-type passive filter. The research method used in this research is using a Power Quality Analyzer to measure power quality parameters and using Simulink MATLAB software to design a harmonic filter. From the third filter designed, the result is that the third filter is able to reduce THDI values in odd orders, namely order 3, order 5, order 7, order 9 and order 11. The single tuned passive filter can improve the power factor, and has losses that decrease along with increase in the number of lamp loads. For second order passive filters and c-type passive filters, the power factor value decreases and has losses that increase as the number of lamp loads used increases