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Memorias de investigación
Communications at congresses:
Influence of Unsymmetrical Serial Impedances on the Current Unbalance Factor of a Three-phase Induction Motor
Year:2007
Research Areas
  • Electric engineering
Information
Abstract
This paper presents an analytical study of the effects of unsymmetrical three-phase line on the so-called current unbalance factor. The asymmetry of the impedances in the three-phase lines/cables that feed induction motors produces voltage unbalance at the machine terminals. This voltage unbalance has harmful effects on three-phase induction motors, such as line-current unbalance, temperature rise, torque pulsation, derating in the machine, etc. In this paper it is demonstrated that the current unbalance factor depends only on the negative sequence impedance of the motor and the line impedances. Thus, the current unbalance factor has a practically constant value for a given motor and line asymmetry, being independent of the motor speed. An analytical method has been developed and experimentally verified.
International
Si
Congress
X Portuguese-Spanish Congress in Electrical Engineering (X Congreso Luso Español de Ingeniería Eléctrica)
960
Place
Flunchal (Portugal)
Reviewers
Si
ISBN/ISSN
978-972- 88 22-09-5
Start Date
05/07/2007
End Date
07/07/2007
From page
To page
Participants
  • Autor: Jose Jesus Fraile Ardanuy (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Sistemas Dinámicos, Aprendizaje y Control (SISDAC)
  • Departamento: Ingeniería Civil: Hidráulica y Energética
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