DISAIN LOW PASS ACTIVE FILTER UNTUK MEREDUKSI HARMONIK PADA KELUARAN INVERTER PLTS ON-GRID MENGGUNAKAN MULTISIM DI LABORATORIUM TEKNIK MESIN UNIVERSITAS KRISTEN INDONESIA

Abstract

Further research to analyze harmonics at the output of the PLTS inverter with various configurations and operating conditions. Therefore, this study aims to analyze harmonics at the output of the PLTS inverter using Multisim, so that it can contribute to increasing the efficiency of the PLTS system. The author's objectives in conducting the research are: to determine the level of current and voltage harmonics at the output side of the on-grid PLTS inverter, and to design a low-pass active filter circuit based on the harmonic level at the output side of the on-grid PLTS inverter referring to the IEEE 519-2014 standard using Multisim. Based on the simulation results of the low pass active filter circuit above, the following conclusions are obtained: from the measurement results, it is obtained that the THD-v on the output side of the on-grid PLTS inverter of 1.55% is still below the IEEE standard limit value, and the THD-i value of 5.38% exceeds the IEEE 519-2014 standard, and the dominant THD-i of order 3 is 4.09%, taking into account THDv and THDi, the TPF is 0.83, which does not meet the power factor standard ≥ 0.85. After the Multisim simulation, the active filter can reduce THD-i to 2.063%, according to the standard and the power factor to 0.94.