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Details van artikel 182 van 197 gevonden artikelen
| Titel: |
The Effects of Nonideal Voltage and Winding Conditions on the Performance of Induction Motors |
| Auteur: |
Wallace, A. Von Jouanne, A. Wiedenbrug, E. Unsal, A. Andrews, P. |
| Verschenen in: |
Electric power components & systems |
| Paginering: | Jaargang 29 (2001) nr. 6 pagina's 543-554 |
| Jaar: |
2001-06-01 |
| Inhoud: |
This paper investigates the effects of over-voltage, under-voltage, unbalanced voltage, and unbalanced windings on the performance of induction machines in terms of line currents, power factors, and efficiencies. A set of three motors of 50 hp, 100 hp, and 300 hp, respectively, has been tested. Of these, the 100-hp, 4-pole motor was specially prepared by connections that enable either regular balanced-phase windings or unbalanced windings by the removal of one coil per phase. The performance (i.e., phase currents, power factor, and efficiency for balanced operation over a range of loads from 0 to 150% of rated) was established. This was compared to the performance at three different voltage conditions: 10% overvoltage, 10% undervoltage, and 2.5% voltage unbalance. This entire range of commonly encountered, nonideal voltage conditions was then repeated with the 100-hp motor with the windings deliberately unbalanced. The test results show how the different motors behave similarly in terms of line current and power factor and differently in terms of efficiency when subject to the particular voltage conditions. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 182 van 197 gevonden artikelen
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