Dynamical modeling and analysis of asymmetric unbalanced three-phase transformers

2015 ◽  
Author(s):  
F. Aboura ◽  
S.A. Touhami ◽  
A.I. Zama ◽  
R. Tahmi ◽  
O. Touhami ◽  
...  
Keyword(s):  
Dynamical Modeling ◽  
Modeling And Analysis ◽  
Three Phase

Modeling, Analysis, of Induction Motor's Stator Turns Fault Using Neuro-Fuzzy

2021 ◽  
pp. 498-520
Author(s):  
Hussein. A. Taha ◽  
M. E. Ammar ◽  
M. A. Moustafa Hassan
Keyword(s):  
Induction Motor ◽  
Diagnostic Tool ◽  
Short Circuit ◽  
Simulated Data ◽  
Fault Detection And Diagnosis ◽  
Modeling And Analysis ◽  
Motor Current ◽  
Neuro Fuzzy ◽  
Three Phase ◽  
Detection And Diagnosis

This chapter discusses modeling and analysis methods for fault detection and diagnosis of stator inter-turn short circuit in three-phase induction machines. dq frame was used to model the induction motor for both health and fault cases to facilitate recognition of motor current and simulate motor environment. Fault diagnosis system was designed with adaptive neuro-fuzzy inference system (ANFIS) to provide an efficient online diagnostic tool. ANFIS diagnostic tool was trained with simulated data that generated by induction motor healthy and faulty models. Approached tool is verified online with a motor under different loading conditions. It determines the fault severity values using the motor current signature analysis (MCSA). Developed tool performance is investigated with a case study of two HP three-phase induction motor using Matlab/Simulink® software.

scholarly journals A Novel Three-Phase Six-Switch PFC Rectifier with Zero-Voltage-Switching and Zero-Current-Switching Features

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1119 ◽  
Author(s):  
Chun-Wei Lin ◽  
Chang-Yi Peng ◽  
Huang-Jen Chiu
Keyword(s):  
Switching Loss ◽  
Modeling And Analysis ◽  
Zero Voltage Switching ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current ◽  
Three Phase ◽  
The One ◽  
Zero Voltage ◽  
Voltage Switching

A novel three-phase power-factor-correction (PFC) rectifier with zero-voltage-switching (ZVS) in six main switches and zero-current-switching (ZCS) in the auxiliary switch is proposed, analyzed, and experimentally verified. The main feature of the proposed auxiliary circuit is used to reduce the switching loss when the six main switches are turned on and the one auxiliary switch is turned off. In this paper, a detailed operating analysis of the proposed circuit is given. Modeling and analysis are verified by experimental results based on a three-phase 7 kW rectifier. The soft-switched PFC rectifier shows an improvement in efficiency of 2.25% compared to its hard-switched counterpart at 220 V under full load.

MODELING AND ANALYSIS OF THREE-PHASE SPACE VECTOR PULSE WIDTH MODULATION BASED RECTIFIERS USING FUZZY-PI CONTROLLER

2015 ◽  
Vol 2 (3) ◽  
pp. 75-75 ◽  
Author(s):  
Mustafa ŞEKKELİ ◽  
Yazar Adı Yazar Soyadı ◽  
Hakan AÇIKGÖZ ◽  
Ö.Fatih KEÇECİOĞLU ◽  
Ahmet GANİ
Keyword(s):  
Phase Space ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Pi Controller ◽  
Space Vector ◽  
Modeling And Analysis ◽  
Three Phase ◽  
Fuzzy Pi Controller
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