ANALYSIS OF HARMONIC CURRENTS IN LED LIGHT LOADS FOR DOMESTIC SECTOR

• Main Author: Cahyadi Putra, Agung
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/80933
• Institution: Institut Teknologi Bandung

Lighting is a very important need in all sectors. The global lighting industry is currently developing its products to produce good performance and also save energy. Currently, the use of Light Emitting Diode (LED) lamps is increasing because of their higher performance with more efficient power consumption compared to previous lamp technologies, such as incandescent lamps and CFLs. However, previous research has explained other effects due to the use of LED lights in the form of harmonics, so that LED lights are considered a non-linear load that produces high harmonic currents. So this is a concern if LED lights are used by consumers, where the domestic sector is the largest user in Indonesia. This research will explain the impact of using LED lights by analyzing and also estimating the harmonic currents produced. The first stage is to characterize the lamps used in Indonesia by comparing lighting performance and harmonic current standards. The result is an LED lamp that has the highest efficacy performance of 123 lm/W with a current limit according to standards. The next stage was testing using these LEDs on a large scale (24 lights) to see the impact on the laboratory power supply and the PLN electricity network/grid. As a result, the harmonic current of LED lights has different effects according to the character of the power supply. The third stage is to estimate using the linear regression method from the measurement data from the previous stage. The results obtained are regression coefficients for the current and phase angle of each harmonic order from 1st to 50th order. In the future, these formulas can be used to simplify the estimation and simulation of LED lighting loads on a larger scale.