ELIMINATION OF HARMONIC COMPONENTS IN SOLAR SYSTEM WITH L AND LC PASSIVE FILTERS

Yıl 2021, Cilt: 6 Sayı: 1-2, 14 - 27, 31.12.2021

Suleyman Adak , Hasan Cangi

Öz

As a result of the increase in the use of power electronics-based converters (DC/DC to DC/AC) and non-linear loads, harmonic components occur in the solar networks. It is quite common to use passive LC and L filters to eliminate harmonics in the solar PV systems. The solar system analyzed and modeled consists of solar panels, DC boost converter, PWM controlled solar inverter and six pulsed uncontrolled rectifier. Six pulse uncontrolled rectifier used as load in off-grid solar system produces 5th, 7th, 11th, 13th etc. harmonic components. LC and L filters are used to reduce the solar inverter output current total harmonic distortion (THDI). In the solar system, the THDI value has been reduced to the limit values given by the standards.. LC and L filters are commonly used to eliminate harmonics in solar system. Their widespread use is due to their easy structure and control. Modeling and simulation of the stand-alone PV power system was carried out with Matlab/Simulink program. While the value of THDI was reduced from 91.55% to 2.62% with the LC filter, the value of THDI was reduced to 5.73% with the L filter. It has been observed that the performance of the LC in eliminating the harmonic components is better than the L filter. As a result, LC filter improves both the system efficiency and reduce the THDI value.

Anahtar Kelimeler

: L filter, LC filter, Solar Inverter, Off-Grid Solar System, Total Harmonic Distortion

Kaynakça

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