Study on Single-phase Hybrid Power Filter in Electrified Railway Power Supply System

摘要

In view of the requirements and characteristics of the comprehensive treatment of harmonic and reactive power in electrified railway,a novel single-phase hybrid power filter composed of active power filter (APF) and passive filter (PF) is proposed to compensate the harmonic current and the reactive power caused by AC-DC type of electric locomotive in power system. By analyzing the compensation principle, this paper presents a new feedback control strategy to control the output voltage of APF better. Matlab simulation study results illustrate that the HAPF has a good performance in harmonic suppression and reactive power compensation.