Finite Element Method Magnetics Based Demonstration of Rotating Field in 4-Pole Induction Motor

2013 ◽  
pp. 301-310 ◽  
Author(s):  
Gururaj S. Punekar ◽  
D. Harimurugan ◽  
Gautham H. Tantry
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Induction Motor ◽  
Rotating Field ◽  
Element Method

Rotational Core Loss of Induction Motor by Finite Element Method

2007 ◽  
Vol 103 (3) ◽  
pp. 75-82
Author(s):  
Hayatoshi Yamada ◽  
Hiroaki Nagashima ◽  
Yukihiko Sakashita ◽  
Wataru Mikami ◽  
Manabu Okamur ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Induction Motor ◽  
Core Loss ◽  
Element Method

scholarly journals Bearing Fault Analysis in Induction Motor Drives Using Finite Element Method

2018 ◽  
Vol 7 (3.6) ◽  
pp. 30 ◽  
Author(s):  
C Vinothraj ◽  
N Praveen Kumar ◽  
T B. Isha
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Induction Motor ◽  
Flux Density ◽  
Air Gap ◽  
Voltage Source ◽  
Pwm Inverter ◽  
Bearing Fault ◽  
Element Method

Diagnosis of faults in induction motor is an indispensable process in industries to improve the reliability of the machine and reduce the financial loss. Among the various faults occurring in induction motors (IM), bearing fault is the predominant one which covers nearly 60% of faults. In this paper, a study of the electromagnetic field of an induction motor with bearing fault fed from both the mains and a three phase voltage source PWM inverter in open loop is carried out using Finite element method (FEM). Electromagnetic field parameters like flux lines distribution, flux density distribution and radial air gapflux density are analyzed. The presence of bearing fault can be detected from the spatial FFT spectrum of radial air gap flux density. From the FFT spectrum, it is seen that the amplitude of fundamental component of radial air gap flux density decreases and those around 100 mm distance increases with the severity of fault.  

scholarly journals An analysis of inter-bar currents on a polyphase cage induction motor

2004 ◽  
Vol 15 (4) ◽  
pp. 476-484
Author(s):  
Renato Carlson ◽  
Cláudia A. da Silva ◽  
Nelson Sadowski ◽  
Michel Lajoie-Mazenc
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Induction Motor ◽  
Induction Motors ◽  
Short Circuit ◽  
Fundamental Component ◽  
Cage Induction Motor ◽  
Element Method

This work uses a methodology based on 2D-Finite Element Method (FEM) and on the Circuits Theory (Independent Currents Method) to analyze the inter-bar currents on the rotor of cage induction motors. The Multi-Slice Technique is used to consider the skewing effect. Three conditions are considered: one inter-bar resistance, two inter-bar resistances and three inter-bar resistances. The results show the distribution of currents in the rotor bars, short-circuit rings and transversal resistances at a given time. The fundamental component of the inter-bar and surrounding bar currents are shown to help understanding the phenomenon.

Torque Characteristic Analysis of an IM/PM Hybrid Motor by Using Finite Element Method

2014 ◽  
Vol 792 ◽  
pp. 337-342 ◽  
Author(s):  
Shingo Iwao ◽  
Takashi Todaka ◽  
Masato Enokizono
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Induction Motor ◽  
Permanent Magnets ◽  
Two Dimensional ◽  
Characteristic Analysis ◽  
Dimensional Finite Element ◽  
Terminal Voltage ◽  
Hybrid Motor ◽  
Element Method

This paper presents torque characteristic analysis of synchronous induction motors called “IM/PM hybrid motors” by using the two-dimensional finite element method taking terminal voltage into account. The slip characteristics are analyzed by using multi-meshes corresponding to each rotor position, because the transient numerical analysis is quite difficult due to slip even two-dimensional analysis. There are many researches on IM/PM hybrid motors, however the torque characteristics when they are operating as an induction motor have not yet examined sufficiently. In this paper, we tried to explore how to improve the torque characteristics even operating as an induction motor by incorporating the embedded permanent magnets. The results show that the arrangement of the permanent magnets is very important to improve whole torque characteristics.

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