Effect of LC filter in reducing harmonic current in NVIS 7017 three-phase synchronous generator lab trainer Azmi Rizki Lubis (*a), Adi Sutopo (a), Marwan Affandi (a)
a) Faculty of Engineering, Universitas Negeri Medan
Jalan Willem Iskandar Pasar V Medan Estate, Kenangan Baru, Percut Sei Tuan, Deli Serdang Regency, North Sumatra 20221
*azmirizkilubis[at]unimed.ac.id
Abstract
The electrical energy conversion laboratory located in the electrical engineering workshop environment is a room for students majoring in electrical engineering education at Universitas Negeri Medan for electrical machinery practice activities. From several student practicum modules, there is one module of testing the open circuit characteristics of a three-phase synchronous generator and testing the characteristics of a three-phase synchronous generator short circuit using the NV7017 Three-Phase Synchronous Generator Lab Trainer. From the observation results, this trainer contains a total harmonic distortion current of 82.1%. After research using an LC filter, it can reduce the content of harmonic currents that appear to be 14.28%. The results obtained are good but according to the IEEE 519 -2019 standard for ISC / IL = 46.77 for a 220-volt system voltage, the permissible third-order individual harmonic distortion current (IHDi) is 7%, while the research results obtained are 12.65%. So it is necessary to conduct further research in order to determine other types of harmonic filters that can reduce harmonic currents according to IEEE 519 - 2014 standards.
Keywords: The LC Filter- Harmonics- three-phase synchronous generator
