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Limitations of PWM Rectifier under Unbalanced Voltage Supply
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SYSNO ASEP 0352055 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Limitations of PWM Rectifier under Unbalanced Voltage Supply Author(s) Chomát, Miroslav (UT-L) RID, ORCID
Schreier, Luděk (UT-L) RID
Bendl, Jiří (UT-L) RIDSource Title IET Conference on Power Electronics, Machines and Drives PEMD 2010. - Brighton : Institution of Engineering and Technology /IET/, 2010 - ISBN 978-1-84919-231-6 Pages s. 1-6 Number of pages 6 s. Publication form CD ROM - CD ROM Action IET Conference on Power Electronics, Machines and Drives PEMD 2010 Event date 19.04.2010-21.04.2010 VEvent location Brighton Country GB - United Kingdom Event type EUR Language eng - English Country GB - United Kingdom Keywords DC-link voltage pulsations ; unbalanced voltage supply ; pulse-width modulation Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GA102/09/1273 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20570509 - UE-C, UT-L (2005-2011) Annotation Voltage-unbalance conditions that can arise in the power network may affect operation of electric drives in a negative way. The cause of the unbalance may be a failure in the network or presence of an unbalanced load in the vicinity of the affected drive. Unsymmetrical system of voltages at the input of a voltage source inverter gives rise to the pulsations in the DC-link voltage when no suitable countermeasures are taken. This may result in significantly reduced power capabilities and, therefore, limited controllability of the drive as well as negative influence on the lifetime of the electric motor in the drive. The paper deals with methods to address this problem and with the constraints caused by the unbalanced voltage supply. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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