[IEEE 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - Moscow and St. Petersburg, Russia (2018.1.29-2018.2.1)] 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - Comprehensive comparison between hybrid fuzzy-PI and PSO-PI controllers based active power filter for compensation of harmonics and reactive power under different load conditions