Volume 7, Issue 1 (March 2011)                   IJEEE 2011, 7(1): 42-51 | Back to browse issues page

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Abbasi H, Gholami A, Abbasi A. Investigation and Control of Unstable Chaotic Behavior Using of Chaos Theory in Two Electrical Power Systems: 1-Buck Converter2- Power Transformer. IJEEE 2011; 7 (1) :42-51
URL: http://ijeee.iust.ac.ir/article-1-352-en.html
Investigation and Control of Unstable Chaotic Behavior Using of Chaos Theory in Two Electrical Power Systems: 1-Buck Converter2- Power Transformer
H. Abbasi , A. Gholami , A. Abbasi
Abstract:   (10519 Views)
This paper consist of two sections: control and stabilizing approach for chaotic behaviour of converter is introduced in first section of this paper for the removal of harmonic caused by the chaotic behaviour in current converter. For this work, a Time- Delayed Feedback Controller (TDFC) control method for stability chaotic behaviour of buck converter for switching courses in current control mode is presented. This behaviour is demonstrated by presenting a piecewise linear discrete map for this converter and then combining the feedback equation to obtain the overall equation of the converter. A simple time-delay feedback control method is applied to stabilize the Unstable Periodic Orbits (UPOs). In second section is studied the effect of a parallel metal oxide surge arrester on the ferroresonance oscillations of the transformer. It is expected that the arresters generally cause ferroresonance drop out. Simulation has been done on a three phase power transformer with one open phase. Effect of varying input voltage has been studied. The simulation results reveal that connecting the arrester to the transformer poles, exhibits a great mitigating effect on ferroresonant over voltages. Phase plane along with bifurcation diagrams are also presented. Significant effect on the onset of chaos, the range of parameter values that may lead to chaos and magnitude of ferroresonant voltages has been obtained, shown and tabulated.
Keywords: TDFC Method , Buck Converter , Fuzzy Diagram , Bifurcation Diagram , Power Transformer , Chaotic Ferroresonance
Full-Text [PDF 499 kb]   (4456 Downloads)    
Type of Study: Research Paper | Subject: Power Systems Stability
Received: 2010/12/05 | Revised: 2011/12/24 | Accepted: 2013/12/30
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