Harmonic analysis on LVDC distribution system and passive filter techniques for harmonic reduction

Usages of DC power instead of AC power on the secondary distribution system creates a lot of harmonics. Our goal is to eliminate the harmonics onto the system and due to the limited specification of filter it has not been possible to reduce all the harmonics in the secondary distribution system. But we must be more focused to achieve this goal, because large shares of household loads are turning into DC in recent years. If this trend continues, the impact of harmonics on customer end will reach a level which might be detrimental and redundant to both loads and grid. The main objective of this research is to explain the effects of harmonics on the low voltage direct current (LVDC) distribution system and measure the harmonic content present in the network and proposed a recovery method by inserting filter. Due to additional non-linear loads on the LVDC distribution system, a sufficient amount of harmonics will be created. To solve this issue, use of passive harmonic filter is recommended for the DC operated secondary distribution system. After using a passive filter into the LVDC network, the system harmonics are being reduced into the acceptable limits and almost eliminate the harmonics generated by the converter and nonlinear loads.