Determination of the No-Load Currents and the Associated Winding and Iron-Core Forces of Saturable Induction Machines for Sinusoidal and Nonsinusoidal Terminal Voltages

1988 ◽  
pp. 213-250
Author(s):  
E. F. Fuchs ◽  
D. J. Roesler
Keyword(s):  
Induction Machines ◽  
Iron Core

Effect of Stator Insulation Failure on the Motor Drive System Performance

2021 ◽  
Vol 35 (11) ◽  
pp. 1370-1371
Author(s):  
Hassan Eldeeb ◽  
Haisen Zhao ◽  
Osama Mohammed
Keyword(s):  
Flux Density ◽  
System Performance ◽  
Induction Machines ◽  
Air Gap ◽  
Drive System ◽  
Self Control ◽  
Motor Drive ◽  
Iron Core ◽  
Insulation Failure ◽  
Motor Drive System

This study investigates the influence of the stator’s turn-to-turn failures (TTFs) on the electromagnetic (EM) fields, such as air gap flux density, flux density in the stator, and rotor iron core inside of direct self-control (DSC) driven induction machines (IMs). The purpose of the investigation is to capture the fault signatures in the air gap EM flux for detecting the stator’s fault at its embryonic stage.

scholarly journals An Accurate Iron Core Loss Model in Equivalent Circuit of Induction Machines

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Bilal Abdullah Nasir
Keyword(s):  
Equivalent Circuit ◽  
Supply Voltage ◽  
Core Loss ◽  
Induction Machines ◽  
Parameter Determination ◽  
Iron Core ◽  
Circuit Parameter ◽  
Major Loss ◽  
Accurate Procedure ◽  
Main Component

Iron core loss is the major loss in electrical machines. It performs up to 25% of total machine losses. The machine efficiency calculation requires an accurate prediction of losses. The accuracy of losses calculation depends largely on the equivalent circuit parameter determination and measurements. In this paper, an accurate procedure of iron core loss determination considering the variation effect of supply voltage, iron core temperature, rotor parameters due to skin effect, and magnetizing saturation. The iron core resistance is performed as main component in the equivalent circuit. This resistance is a function of supply voltage and used to calculate part of stray loss as well as iron core loss. The theoretical model is compared with practical results with high accuracy, which proves the validity of the proposed procedure.

Reverse-rotation test for the determination of stray load loss in induction machines

1939 ◽  
Vol 58 (7) ◽  
pp. 319-324
Author(s):  
Theodore H. Morgan ◽  
William E. Brown ◽  
Arthur J. Schumer
Keyword(s):  
Induction Machines ◽  
Rotation Test ◽  
Stray Load Loss
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