Unbalanced voltages impacts on the energy performance of induction motors

This paper presents the results of a study about the effects of unbalanced voltages on the energy performance of three-phase induction motors. The principal contribution of this paper is that presents a detailed analysis of the influence of positive and negative sequence voltage components and the a...

Full description

Autores:
Quispe, Enrique Ciro
Lopez, Ivan D.
Ferreira E., Fernando J.T.
Sousa Santos, Vladimir
Tipo de recurso:
Article of journal
Fecha de publicación:
2018
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/4624
Acceso en línea:
https://hdl.handle.net/11323/4624
https://repositorio.cuc.edu.co/
Palabra clave:
Efficiency
Energy performance
Induction motors
Losses
Power factor
Voltage unbalance
Eficiencia
Rendimiento energético
Motores de induccion
Pérdidas
Factor de potencia
Desequilibrio de voltaje
Rights
openAccess
License
Attribution-NonCommercial-ShareAlike 4.0 International
Description
Summary:This paper presents the results of a study about the effects of unbalanced voltages on the energy performance of three-phase induction motors. The principal contribution of this paper is that presents a detailed analysis of the influence of positive and negative sequence voltage components and the angle between them on several characteristics such as: line currents, losses, efficiency and power factor under different voltage unbalanced conditions. A three-phase induction motor of 3 HP was used as a case study. The results of the investigation show that the positive sequence voltage must be considered together with the voltage unbalance factor (VUF) or percent voltage unbalance (PVU) index to evaluate the performance of the induction motor. It is also shown that the behavior of the motor load influences on the positive sequence parameters next to the voltage, while in the case of negative sequence only influences the negative sequence voltage.