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Voltage Sag Ride-Through for Line-Connected Syn-chronous Motors Through Flux Control
2003 (English)In: PEDS 2003 : FIFTH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS, VOLS 1 AND 2, PROCEEDINGS / [ed] Tseng, K.J., 2003, Vol. 2, p. 1219-1223Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, the voltage sag ride-through capabilities of the line-connected electrically excited synchronous motors with damper windings (EESMs) is investigated. Two aspects are investigated, first the capability to keep the nominal speed and second the damping of speed oscillations by controlling the flux. We will design a voltage sag ride-through controller and show through simulations that the proposed controller has good speed oscillation damping capability and that the ride-through capability is improved.

Place, publisher, year, edition, pages
2003. Vol. 2, p. 1219-1223
Series
International Conference on Power Electronics and Drive Systems PEDS
Keyword [en]
power quality, protection and control, synchronous machine, voltage sag ride-through
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-7520ISI: 000223102300230OAI: oai:DiVA.org:kth-7520DiVA, id: diva2:12569
Conference
5th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2003) Singapore, SINGAPORE, NOV 17-20, 2003
Note

QC 20101012

Available from: 2005-10-17 Created: 2005-10-17 Last updated: 2013-12-06Bibliographically approved
In thesis
1. Voltage sag ride-through of AC drives: control and analysis
Open this publication in new window or tab >>Voltage sag ride-through of AC drives: control and analysis
2005 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis focuses on controller design and analysis for induction motor (IM) drives, flux control for electrically excited synchronous motors with damper windings (EESMs), and to enhance voltage sag ride-through ability and analysis for a wind turbine application with a full-power grid-connected active rectifier. The goal is to be able to use the existing equipment, without altering the hardware. Further, design and analysis of the stabilization of DC-link voltage oscillations for DC systems and inverter drives is studied, for example traction drives with voltage sags in focus.

The proposed IM controller is based on the field-weakening controller of Kim and Sul [31], which is further developed. Applying the proposed controller to voltage sag ride-through gives a cheap and simple ride-through system.

The EESM controller is based on setpoint adjustment for the field current controller. The analysis also concerns stability for the proposed flux controller.

The DC-link stabilization algorithm is designed following Mosskull [38], where a component is added to the current controller. The algorithm is further developed.

Analysis is the main focus, and concerns the impact of the different parameters involved. Proper parameter selection for the controller, switching frequency, and DC-link capacitor is given.

The impact of voltage sags is investigated for a power-grid-connected rectifier. Here, we analyze the impact of different types of voltage sags and phase-angle jumps. The analysis gives design rules for the DC-link capacitor and the switching frequency.

Experimental results and simulations verify the theoretical results.

Place, publisher, year, edition, pages
Stockholm: KTH, 2005. p. 51
Series
Trita-ETS, ISSN 1650-674X ; 2005.12
National Category
Control Engineering
Identifiers
urn:nbn:se:kth:diva-450 (URN)91-7178-165-X (ISBN)
Public defence
2005-10-20, Sal D3, Lindstedtsvägen 5, Stockholm, 10:15
Opponent
Supervisors
Note
QC 20101012Available from: 2005-10-17 Created: 2005-10-17 Last updated: 2011-12-16Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
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  • ieee
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More styles
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Output format
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