NDLI: Limitations of Voltage-Oriented PI Current Control of Grid-Connected PWM Rectifiers With <formula formulatype=inline><tex Notation=TeX>$LCL$</tex></formula> Filters

Content Provider	IEEE Xplore Digital Library
Author	Dannehl, J. Wessels, C. Fuchs, F.W.
Copyright Year	1982
Abstract	Voltage-oriented PI control of three-phase grid-connected pulsewidth-modulation rectifiers with LCL filters is addressed. LCL filters require resonance damping. Active resonance damping is state of the art to face the problem, but it is still under investigation because of the manifold solutions. It is often realized using many sensors and/or complex control algorithms. In contrast, pure PI control requires only one set of current sensors, and its implementation and design are rather simple and well known from the L filter control. PI control has already been shown to be a suitable solution also for LCL filters, but there are limitations. These are investigated in this paper. System stability is analyzed with respect to different ratios of LCL filter resonance and control frequencies. The latter are important parameters for system design and control. Both line and converter current control are analyzed. For a certain range of frequency ratios, the voltage-oriented PI control gives stable performance without additional feedback, but for ratios outside this range, stable operation is impossible. Experimental tests validate the theoretical results. In addition, an experimentally determined LCL filter transfer function is shown in this paper, which shows a lower resonance peak as expected from commonly used filter models.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	380
Ending Page	388
Page Count	9
File Size	933733
File Format	PDF
ISSN	02780046
Volume Number	56
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Current control Rectifiers Filters Pi control Resonance Damping Control systems Space vector pulse width modulation Stability analysis PI current control Active damping (AD) grid-connected pulsewidth-modulation (PWM) rectifier $LCL$ filter
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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