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Limitations of Voltage-Oriented PI Current Control of Grid-Connected PWM Rectifiers With $LCL$ Filters

Dannehl, J., Wessels, C., Fuchs, F.W.·2009·IEEE Transactions on Industrial Electronics

Abstract

Voltage-oriented PI control of three-phase grid-connected pulsewidth-modulation rectifiers withLCLfilters is addressed.LCLfilters 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 theLfilter control. PI control has already been shown to be a suitable solution also forLCLfilters, but there are limitations. These are investigated in this paper. System stability is analyzed with respect to different ratios ofLCLfilter 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 determinedLCLfilter transfer function is shown in this paper, which shows a lower resonance peak as expected from commonly used filter models.

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Metadata

Authors
Dannehl, J., Wessels, C., & Fuchs, F. W.
Venue
IEEE Transactions on Industrial Electronics
Published
2009-02
Volume
56
Issue
2
Pages
380-388
ISSN
0278-0046 (ISSN-L)
OpenAlex
W2137302271
Cited by
747
References
16
FWCI
35.17
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Limitations of Voltage-Oriented PI Current Control of Grid-Connected PWM Rectifiers With $LCL$ Filters. https://app.cochat.ai/papers/10.1109/tie.2008.2008774
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Dannehl, J., Wessels, C., & Fuchs, F. W. (2009). Limitations of Voltage-Oriented PI Current Control of Grid-Connected PWM Rectifiers With $LCL$ Filters. IEEE Transactions on Industrial Electronics. https://doi.org/10.1109/tie.2008.2008774

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