Determination of radial-forces in relation to noise and vibration problems of squirrel-cage induction motors

1994 ◽  
Vol 9 (2) ◽  
pp. 404-412 ◽  
Author(s):  
S.P. Verma ◽  
A. Balan
Keyword(s):  
Induction Motors ◽  
Noise And Vibration ◽  
Squirrel Cage ◽  
Radial Forces ◽  
Vibration Problems

Analytical determination of the parameters of high-voltage induction motors with squirrel-cage rotors after repair

2011 ◽  
Vol 82 (11) ◽  
pp. 575-577
Author(s):  
V. P. Kazantsev ◽  
A. M. Kostygov ◽  
M. I. Kuznetsov ◽  
A. Yu. Moskokov
Keyword(s):  
High Voltage ◽  
Induction Motors ◽  
Analytical Determination ◽  
Squirrel Cage

scholarly journals Calculation of energy-saving traffic of tram vehicle with field-oriented control of traction induction motors

Rail Vehicles ◽  
2011 ◽  
pp. 57-61
Author(s):  
Stanisław Rawicki ◽  
Marcin Nowak ◽  
Maciej Różański ◽  
Wojciech Wycinka
Keyword(s):  
Energy Use ◽  
Induction Motors ◽  
Electric Energy ◽  
Optimization Procedure ◽  
Field Oriented Control ◽  
Electric Energy Consumption ◽  
Squirrel Cage ◽  
Three Phase ◽  
The City

The paper deals with the problems of the tram vehicle control according to the criterion of the minimum electric energy consumption. The authors have extended the methodics given in literature and have elaborated the algorithm of the energysaving tram traffic taking into consideration various ride disturbances. During the running within the framework of the city conditions tram ride parameters change frequently. The mathematical models take into account the field-oriented control of traction three-phase squirrel-cage induction motors. Determination of the run algorithm ensuring the minimization of the electric energy use has been realized by application of the optimization procedure.

MODELING OF NONLINEAR VIBRATION PROBLEMS WITH FLUID FLOWS THROUGH PIPELINES

2018 ◽  
pp. 44-47
Author(s):  
F.J. Тurayev
Keyword(s):  
Differential Equations ◽  
Nonlinear Vibration ◽  
Viscoelastic Properties ◽  
Construction Material ◽  
Fluid Flows ◽  
Variable Coefficients ◽  
Algebraic Equations ◽  
Flowing Liquid ◽  
Vibration Problems

In this paper, mathematical model of nonlinear vibration problems with fluid flows through pipelines have been developed. Using the Bubnov–Galerkin method for the boundary conditions, the resulting nonlinear integro-differential equations with partial derivatives are reduced to solving systems of nonlinear ordinary integro-differential equations with both constant and variable coefficients as functions of time.A system of algebraic equations is obtained according to numerical method for the unknowns. The influence of the singularity of heredity kernels on the vibrations of structures possessing viscoelastic properties is numerically investigated.It was found that the determination of the effect of viscoelastic properties of the construction material on vibrations of the pipeline with a flowing liquid requires applying weakly singular hereditary kernels with an Abel type singularity.

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