Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2006.10b
- /
- Pages.147-153
- /
- 2006
Characteristics Analysis of Induction Motor by Operation of Non-lineal Loads
비선형 부하의 운전시 유도전동기의 특성 해석
-
Kim, Jong-Gyeum
(Wonju National College) ;
-
Park, Young-Jeen
(Wonju National College) ;
- Lee, Eun-Woong (Chungnam Univ)
- Published : 2006.10.20
Abstract
Voltage unbalance will be generated by the load unbalance operation such as combination operation of single & three phase load and current unbalance will be more severe by the deteriorated voltage quality. Under the these unbalance conditions, all power electronic converters used in different types of electronic systems can increase harmonic disturbances by injecting harmonic currents directly into the feeder grid of three phase 4-wire. Harmonic current may cause torque to decrease. it may also overheat or become noisy and torque oscillation in the rotor can lead to mechanical resonance and vibration. This paper presents a scheme on the characteristics of induction motor under the combination of linear & non-linear loads at the three phase 4-wire power distribution system by the unbalance and harmonic components. It was able to confirm that the number of torque pulsation decreased and torque ripple values increased by the harmonics that reduction was difficult by five harmonics filters at additional driving time of single-phase non-linear load.
Keywords