Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Study on a Current Control Based on Model Prediction for AC Electric Railway Inbalance Compensation Device
Authors Jeonghyeon Lee ; Jongmin Jo ; Changhoon Shin ; Taehoon Lee ; Hanju Cha
DOI 10.6113/TKPE.2020.25.6.490
Page pp.490-495
ISSN 1229-2214
Keywords Low switching frequency; Model predictive control; Railway power compensator
Abstract The power loss of large-capacity systems using single-phase inverters has attracted considerable attention. In this study, optimal switching sequence model prediction control at a low switching frequency is proposed to reduce the power loss in a high-power inverter system, and a compensation method that can be utilized for model prediction control is developed to reduce errors in accordance with sampling values. When a three-level, single-phase inverter using a switching frequency of 600 Hz and a sampling frequency of 12 kHz is adopted, the power factor is improved from 0.95 to 0.99 through 3 kW active power control. The performance of the controller is also verified.