NDLI: Multiple harmonics control for three-phase grid converter systems with the use of PI-RES current controller in a rotating frame

Content Provider	IEEE Xplore Digital Library
Author	Liserre, M. Teodorescu, R. Blaabjerg, F.
Copyright Year	1986
Abstract	Voltage source inverters connected to the grid in applications such as active rectifiers, active filters, uninterruptible power supplies, and distributed generation systems need an optimal ac current control. To obtain zero steady-state error at the fundamental frequency (i.e., unity power factor), the use of a standard integrator in a rotating frame is as effective as the use of a resonant controller in a stationary frame. However, the grid voltage harmonics influence the current controller and generate current harmonics unless several integrators in multiple rotating frames or resonant compensators in a stationary frame are adopted. In this letter, a hybrid system consisting of a proportional integral (PI) controller plus a generic h^th harmonic resonant controller implemented in a frame rotating at the n ^th harmonic frequency is discussed in detail. The h^th harmonic controller is able to decrease both the (h - n)^th and (h + n)^th harmonics, while the PI controller is able to decrease other harmonics if the synchronization phase signal adopted for the frame transformation is unfiltered. It is demonstrated that the use of a PI and sixth harmonic resonant compensator is effective for both positive and negative sequence fifth and seventh harmonics; hence, four harmonics are compensated with the proportional integral-resonant (PI-RES) controller implemented in a synchronous frame. Simulation and experimental tests validate the proposed analysis
Sponsorship	IEEE Power Electronics Society
Starting Page	836
Ending Page	841
Page Count	6
File Size	778393
File Format	PDF
ISSN	08858993
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control systems Power harmonic filters Resonance Pi control Proportional control Frequency Inverters Rectifiers Active filters Uninterruptible power systems resonant controllers Current control power system harmonics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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