scholarly journals Evaluation of the behaviour of an induction motor for fan system under various external factors

2022 ◽  
Vol 1216 (1) ◽  
pp. 012007
Author(s):  
S Rachev ◽  
L Dimitrov
Keyword(s):  
Induction Motor ◽  
Supply Voltage ◽  
Electrical Power ◽  
Rotational Frequency ◽  
External Factors ◽  
State Regime ◽  
Process Observation ◽  
Cage Induction Motor ◽  
And Control ◽  
The Impact

Abstract Paper concerns a mathematical model developed for working process observation of a fan system squirrel-cage induction motor electric drive. The electric motor in question is designed for permanent, uninterruptible operation. The system of differential equations is converted and processed with the help of appropriate software. The impact of external factors is assessed – supply voltage deflection and variation of rates of mechanical quantities involved in the motion equation. Electrical power losses in steady-state regime and energy losses at start-up are calculated. The results obtained are practical oriented when considering methods to start and control the rotational frequency to imrove energy efficiency.

scholarly journals Study and analysis the effect of variable applied voltage on SCIM performances based on FEA

2020 ◽  
Vol 11 (3) ◽  
pp. 1230
Author(s):  
Waleed Khalid Shakir Al-Jubori ◽  
Yasir Abdulhafedh Ahmed
Keyword(s):  
Steady State ◽  
Induction Motor ◽  
Applied Voltage ◽  
Supply Voltage ◽  
Finite Elements Analysis ◽  
Steady State Condition ◽  
Squirrel Cage ◽  
Voltage Variation ◽  
Three Phase ◽  
Cage Induction Motor

Study and analysis the effect of variable applied voltage on SCIM performances based on FEA is presented. Three phase squirrel cage induction motor SCIM has been investigated and numerically simulated using finite element method (FEM) with the aid of ANSYS software (RMxprt and Maxwell 2D/3D). This research presents study and analysis of the effects of the voltage variation on performance and efficiency of the three-phase induction motor of the squirrel cage type. The Finite Elements Analysis Method FEA is used as one of the best methods for analysis and simulation of electrical motors in addition to the possibility of dealing with nonlinear equations, Since the induction motor is a complex electromagnetic reaction, the researchers used the ANSYS program to represent and analyze the performance of the motor under variable supply voltage. The case studied in this research is three phases, 380V, 50Hz, 2.2kW, induction motor that widely use in industrial application. The aim of this research is to study the effect of voltage variation on efficiency, current value, power factor and torque of SCIM.  The RMxprt software has been used for modeling and simulating the induction motor and calculating the values of phases currents, input and output power in additional of overall efficiency at steady state condition. The next stage of the research is creating Maxwell 2-D design from the base model of RMxprt software, Maxwell 2-D model has the ability to computing the distribution of magnetic field and explaining the performance under steady-state operation. The obtained results show significant reduction of motor performance due to the effect of variation of apply voltage.

Analysis and control of dual stator winding induction motor

2012 ◽  
Vol 61 (3) ◽  
pp. 421-438 ◽  
Author(s):  
Krzysztof Pieńkowski
Keyword(s):  
Control Systems ◽  
Induction Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Stator Winding ◽  
Vector Form ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Motor ◽  
Cage Induction Motor ◽  
And Control

Analysis and control of dual stator winding induction motor The paper presents the mathematical models of dual stator squirrel-cage induction motor, formulated in phase coordinate system and in general transformed space vector form. The two types of models of dual stator induction motor are considered. The control systems of field-oriented control (IFOC and DFOC) and direct torque control (DTC) of the dual stator induction motor have been described and discussed.

scholarly journals Efficiency of Cascaded Neural Networks in Detecting Initial Damage to Induction Motor Electric Windings

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1314
Author(s):  
Maciej Skowron ◽  
Teresa Orłowska-Kowalska
Keyword(s):  
Neural Networks ◽  
Induction Motor ◽  
High Efficiency ◽  
Supply Voltage ◽  
Frequency Converter ◽  
Damage Classification ◽  
Voltage Frequency ◽  
Rotor Winding ◽  
Cage Induction Motor ◽  
Diagnostic Software

This article presents the efficiency of using cascaded neural structures in the process of detecting damage to electrical circuits in a squirrel cage induction motor (IM) supplied from a frequency converter. The authors present the idea of a sequential connection of classic neural structures to increase the efficiency of damage classification and detection presented by individual neural structures, especially in the initial phase of single or multiple electrical failures. The easily measurable axial flux signal is used as a source of diagnostic information. The developed cascaded neural networks are implemented in the measurement and diagnostic software made in the LabVIEW environment. The results of the experimental research on a 1.5 kW IM supplied by an industrial frequency converter confirm the high efficiency of the use of the developed cascaded neural structures in the detection of incipient stator and rotor winding faults, namely inter-turn stator winding short circuits and broken rotor bars, as well as mixed failures in the entire range of changes of the load torque and supply voltage frequency.

scholarly journals The model of double-cage induction motor for the analysis of thermal fields in transient operations

2017 ◽  
Vol 66 (2) ◽  
pp. 397-408 ◽  
Author(s):  
Jan Mróz
Keyword(s):  
Induction Motor ◽  
Supply Voltage ◽  
Thermal Fields ◽  
Squirrel Cage ◽  
Measurement Results ◽  
Network Method ◽  
Thermal Network Method ◽  
Cage Induction Motor ◽  
Transient Operations ◽  
Motor Model

AbstractEmergency motor switch-on happens occasionally while operating a doublesquirrel- cage motor at full supply voltage with the rotor blocked (e.g., in coal mills). After releasing the blockage, the by now heated motor is started up again. However, the mechanical stress caused by the increased temperature poses considerable hazards to the squirrel-cage winding. This paper presents a double-cage induction motor model for analysis of thermal fields in transient operation. The thermal field for the rotor of a doublesquirrel- cage motor of soldered or cast structure, operating in the conditions described, has been calculated in the present paper using a thermal network method. Measurement results have been presented for the double-squirrel-cage winding temperature for a soldered cage construction in the blocked rotor state.

scholarly journals A Novel Technique for Rotor Bar Failure Detection in Single-Cage Induction Motor Using FEM and MATLAB/SIMULINK

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Seyed Abbas Taher ◽  
Majid Malekpour
Keyword(s):  
Fault Detection ◽  
Induction Motor ◽  
Failure Detection ◽  
Discrete Wavelet ◽  
Analogue Model ◽  
Matlab Simulink ◽  
Start Up ◽  
Three Phase ◽  
State Regime ◽  
Cage Induction Motor

In this article, a new fault detection technique is proposed for squirrel cage induction motor (SCIM) based on detection of rotor bar failure. This type of fault detection is commonly carried out, while motor continues to work at a steady-state regime. Recently, several methods have been presented for rotor bar failure detection based on evaluation of the start-up transient current. The proposed method here is capable of fault detection immediately after bar breakage, where a three-phase SCIM is modelled in finite element method (FEM) using Maxwell2D software. Broken rotor bars are then modelled by the corresponding outer rotor impedance obtained by GA, thereby presenting an analogue model extracted from FEM to be simulated in a flexible environment such as MATLAB/SIMULINK. To improve the failure recognition, the stator current signal was analysed using discrete wavelet transform (DWT).

scholarly journals Induction Motor Monitoring System Base on Fuzzy Logic Controller

2020 ◽  
Vol 4 (1) ◽  
pp. 15
Author(s):  
Prof. Rukmi Sari Hartati ◽  
Ida Bagus Gede Manuaba ◽  
I Made Mataram
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Monitoring System ◽  
Fuzzy Logic Controller ◽  
Supply Voltage ◽  
Squirrel Cage ◽  
Fuzzy Logic Method ◽  
Motor Condition ◽  
Condition Monitoring System ◽  
Cage Induction Motor

Squirrel cage induction motor is an AC electric motor that is most widely used in industry. This type of motor is chosen because it does not have a commutation brush, and its construction is strong, so it can withstand large, easy flow surges for repair and maintenance. The problem that often occurs is the imbalance of supply voltage which causes motor efficiency to decrease. An imbalance of voltage will result in a current not equal. As a result of phase currents that are much larger than other phases result in an increase in temperature and speed on the motor. This research was conducted to monitor the induction motor so that it can determine the condition of the motor when receiving a voltage imbalance.   The method used in the induction motor condition monitoring system is the fuzzy logic method. Parameters that can be monitored are categorized into three conditions: normal (good) motor condition, damage (serious) and serious damage.

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