Transient model of the three-phase cage asynchronous machine with saturation and space harmonics effects

2005 ◽  
Vol 15 (2) ◽  
pp. 95-108
Author(s):  
A. Ah-Jaco ◽  
H. Yahoui ◽  
A. Makki ◽  
G. Grellet
Keyword(s):  
Transient Model ◽  
Asynchronous Machine ◽  
Three Phase ◽  
Space Harmonics

scholarly journals Novel Simplified Model for Asynchronous Machine with Consideration of Frequency Characteristic

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Changchun Cai ◽  
Ping Ju ◽  
Yuqing Jin
Keyword(s):  
Power Systems ◽  
Frequency Characteristic ◽  
Digital Simulation ◽  
Large Error ◽  
The Novel ◽  
Third Order ◽  
Machine Model ◽  
Transient Model ◽  
Asynchronous Machine ◽  
Electric Equipment

The frequency characteristic of electric equipment should be considered in the digital simulation of power systems. The traditional asynchronous machine third-order transient model excludes not only the stator transient but also the frequency characteristics, thus decreasing the application sphere of the model and resulting in a large error under some special conditions. Based on the physical equivalent circuit and Park model for asynchronous machines, this study proposes a novel asynchronous third-order transient machine model with consideration of the frequency characteristic. In the new definitions of variables, the voltages behind the reactance are redefined as the linear equation of flux linkage. In this way, the rotor voltage equation is not associated with the derivative terms of frequency. However, the derivative terms of frequency should not always be ignored in the application of the traditional third-order transient model. Compared with the traditional third-order transient model, the novel simplified third-order transient model with consideration of the frequency characteristic is more accurate without increasing the order and complexity. Simulation results show that the novel third-order transient model for the asynchronous machine is suitable and effective and is more accurate than the widely used traditional simplified third-order transient model under some special conditions with drastic frequency fluctuations.

Three Phase Short Circuit Current Evaluation of Induction Generator for Wind Turbine in Distribution Network

2014 ◽  
Vol 953-954 ◽  
pp. 582-586
Author(s):  
Tao Li ◽  
Zhi Yong Dai ◽  
Ai Qing Luo ◽  
Shu Pan ◽  
Xi Cong Xiong ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Short Circuit ◽  
Distribution Network ◽  
Short Circuit Current ◽  
Simulation Software ◽  
Induction Generator ◽  
Distribution Grid ◽  
Transient Model ◽  
Stator Current ◽  
Three Phase

The transient characteristics of induction generator (IG) were investigated in the paper, and the analytic formula of its stator current under three-phase short circuit in distribution network was derived. According to the change law of IG rotor speed under the grid fault, an evaluation method to determine the current peak of three-phase short circuit for induction generator in distribution grid is proposed. The correctness of the proposed method was verified by the fifth electromagnetic transient model of IG in PSCAD/EMTDC simulation software.

A Modular Approach and Simulation of an Asynchronous Machine

2016 ◽  
Vol 6 (4) ◽  
pp. 1385
Author(s):  
Zineb Mekrini ◽  
Seddik Bri
Keyword(s):  
Modeling And Simulation ◽  
Induction Motor ◽  
Operating Systems ◽  
Modular Approach ◽  
Asynchronous Machine ◽  
Satisfactory Response ◽  
Additional Load ◽  
Proposed Model ◽  
Three Phase ◽  
Simulation Results

This article presents the modeling and simulation of the asynchronous machine. The aim of this research is the mastery of the electrical, mechanical and magnetic behaviors of this type of machine. The Matlab/Simulink is used for simulation two types of no-load and additional load services in transitional and permanent operation. The Analytical equations describing the two operating systems are evaluated and developed by a generalized model of a three-phase induction motor. The simulation results presented in this article confirms that the proposed model gave a satisfactory response in terms of torque characteristics and speed.

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