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Optimal-regulator-based control of NPC boost rectifiers for unity power factor and reduced neutral-point-potential variations

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Title: Optimal-regulator-based control of NPC boost rectifiers for unity power factor and reduced neutral-point-potential variations
Authors: Fukuda, S.1 Browse this author
Matsumoto, Y. Browse this author
Sagawa, A. Browse this author
Authors(alt): 福田, 昭治1
Issue Date: Jun-1999
Publisher: IEEE
Journal Title: IEEE Transactions on Industrial Electronics
Volume: 46
Issue: 3
Start Page: 527
End Page: 534
Publisher DOI: 10.1109/41.767059
Abstract: Neutral-point-clamped pulsewidth modulation rectifiers (NPCRs) are suitable for high-voltage systems because of their circuit structure. The NPCRs, however, have a problem, in that the neutral point potential (NPP) varies when the current flows into or out of the neutral point. The variations cause voltage deviations in the input waveforms, as well as unbalanced voltage stress on the devices. This paper describes a controlling method for NPCRs based on a state-space model. There are three control objectives: (1) to keep the power factor at unity; (2) to keep the DC-link voltage at a reference value; and (3) to keep the neutral point potential at 0 V. The neutral point current is treated as one of the inputs. The controller is designed based on the optimal regulator theory in order to achieve the three control objectives simultaneously. The validity of the proposed method is demonstrated by experimental results.
Rights: ©1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. IEEE, IEEE Transactions on Industrial Electronics , 46, 3, 1999, p527-534
Type: article
URI: http://hdl.handle.net/2115/5718
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 福田 昭治

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