Title :
Dynamic Behavior of Current Controllers for Selective Harmonic Compensation in Three-Phase Active Power Filters
Author :
Briz, Fernando ; Garcia, Paulo ; Degner, Michael W. ; Diaz-Reigosa, David ; Guerrero, Josep M.
Author_Institution :
Dept. of Electr., Comput., & Syst. Eng., Univ. of Oviedo, Gijon, Spain
Abstract :
Current regulators are a critical part of active power filters (APFs). The design of current regulators capable of compensating high-frequency harmonics created by nonlinear loads is a challenging task. Selective harmonic current compensation using harmonic regulators is a viable method to achieve this goal. However, their design and tuning is not an easy task. The performance-and even the stability-of harmonic current regulators strongly depends on implementation issues, with the tuning of the controller gains being critical. Furthermore, the presence of multiple current regulators working in parallel can create unwanted couplings with the fundamental current regulator, which can result in a deterioration of APF current control, i.e., oscillations and settling times larger than expected. This paper addresses the design and tuning of selective harmonic compensators, with a focus on their stability analysis and transient behavior.
Keywords :
active filters; compensation; electric current control; power filters; transient analysis; APF current control; current controller dynamic behavior; harmonic current regulator stability; high-frequency harmonic compensation; selective harmonic current compensation tuning; stability analysis; three-phase active power filters; transient behavior analysis; Active filters; Frequency synchronization; Harmonic analysis; Power harmonic filters; Regulators; Transfer functions; Voltage control; Active filters; current control; digital control; resonant controllers; selective harmonic compensation;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2013.2253537