Determining the optimal input current waveform in Electrolytic Capacitor-less LED drivers with high power quality

In this study, a new method is proposed to replace electrolytic capacitors with a long life-span capacitor in light-emitting diode (LED) drivers. In this method, odd harmonics of AC network are injected into the input current up to nineteenth order, to eliminate power imbalance between input and out...

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Bibliographic Details
Published in2022 26th International Electrical Power Distribution Conference (EPDC) pp. 43 - 48
Main Authors Aghkariz, Fatemeh Imani, Javidi, Mohammad Hossein, Yektay, Navid
Format Conference Proceeding
LanguageEnglish
Published IEEE 11.05.2022
Subjects
Capacitors
electrolytic capacitors
genetic algorithm
injection harmonics
Light emitting diodes
Lighting
Power distribution
power imbalance
Power quality
Power system harmonics
Reactive power
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Summary:In this study, a new method is proposed to replace electrolytic capacitors with a long life-span capacitor in light-emitting diode (LED) drivers. In this method, odd harmonics of AC network are injected into the input current up to nineteenth order, to eliminate power imbalance between input and output. For a better control, LED driver has considered as a two-stage driver. The injected harmonics and some of the circuit parameters such as output capacitors and control parameters of the first stage and second stage were determined by genetic algorithm. After applying the proposed method and performing the simulation, output capacitors were obtained less than 10 μF, which can be easily replaced with long-life capacitors. In addition, the essential requirements and standards for input current and output current were observed.
DOI:10.1109/EPDC56235.2022.9817148