Title :
Performance Improvement of Parallel Active Power Filters Using Droop Control Method
Author :
Falahi, Ghazal ; Mokhtari, Hossein
Author_Institution :
Sch. of Electr. Eng., Sharif Univ. of Technol., Tehran
Abstract :
In this paper, a new method based on droop control scheme is proposed for controlling parallel operation of active filters. The harmonic components of the load current are extracted by an enhanced phase-locked loop (EPLL). In the parallel group, each filter operates as a conductance and the harmonic workload is shared among them. A droop relationship between the conductance and non-fundamental apparent power controls the operation of each unit. The non-fundamental apparent power has been calculated based on IEEE Std 1459. Principles of operation are explained in this paper and simulation results which are presented approve the effectiveness of this method. The results indicate a significant reduction in total harmonic distortion (THD) in a rectifier application.
Keywords :
active filters; harmonic distortion; phase locked loops; power control; power harmonic filters; rectifying circuits; EPLL; IEEE Std 1459; droop control method; enhanced phase-locked loop; harmonic component; nonfundamental apparent power control; parallel active power filter; total harmonic distortion; Active filters; Control systems; Electrical engineering; Frequency; Phase locked loops; Pollution; Power harmonic filters; Power quality; Power system harmonics; Power system reliability;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918590
