| Title |
Analysis on the Operation Characteristics of Induction Motor Operated by Unbalanced Voltage with Harmonics Components |
| Authors |
김종겸(Kim, Jong-Gyeum) ; 박영진(Park, Young-Jeen) ; 이은웅(Lee, Eun-Woong) |
| Keywords |
Voltage Unbalance ; Induction Motor ; Symmetrical Components ; Torque Pulsation ; Harmonics |
| Abstract |
Most of the loads in industrial power distribution systems are usually balanced and connected to three power systems. However, in the user power distribution systems, partial loads are single & three phase and unbalanced, generating voltage unbalance by the impedance mismatching. Voltage unbalance has detrimental effects on three-phase induction motors, including over heating, line-current unbalance, derating, torque pulsation, low efficiency, etc. This paper presents a scheme on operation states of a three-phase induction motor under the unbalanced voltages with harmonics components. Three-phase voltages applied to the stator winding of the studied induction motor are controlled by respectively adjusting not only fundamental but also harmonics components. Harmonic components at the voltage unbalanced factor(VUF) of the three-phase source voltages can then be examined the different values of VUF on machine's operation characteristics. |