IJE TRANSACTIONS C: Aspects Vol. 27, No. 6 (June 2014) 889-898   

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M. Sarvi and S. Abedi
( Received: June 29, 2013 – Accepted in Revised Form: December 12, 2013 )

Abstract    Multiple output DC-DC converters are widely used in many applications such as aerospace, industrial and medical equipments. The purpose of this paper is to present an intelligent control system for the multiple output DC-DC converters. In order to perform this purpose, a double ended forward DC-DC converter with three output voltages (+5 V/ 50W, +15 V/ 45W and -15 V/ 15W) is considered and analyzed. The voltage mode weighting factor control system with Genetic Algorithm (GA) is performed on the considered DC-DC converter. Furthermore, a PID controller is utilized to minimize the total steady state error. The stability proofs of the system in presence of PID Controller have been analyzed. The results show that the GA weighting factors estimator improves the cross and output regulations in multiple output DC-DC converters. Simulation results verify and confirm the truth and accuracy of the proposed method


Keywords    Multiple Output DC-DC Converters, Master-Slave Control, Genetic Algorithm, Coupled Inductors, Weighting Factor Method, Cross Regulation.


چکیده    مبدل‌های DC-DC به طور گسترده در بسیاری از کاربردهای هوا فضا، صنعتی و تجهیزات پزشکی مورد استفادده قرار می‌گیرند. هدف از این مقاله ارائه یک سیستم کنترل هوشمند برای مبدل‌های DC-DC چند خروجی است. در راستای انجام این هدف، یک مبدل DC-DC فوروارد دو سویه با سه خروجی (5+ ولت/50 وات، 15+ ولت/45 وات و 15- ولت/15 وات) انتخاب و آنالیز شده است. سیستم کنترل ضرائب وزنی مود ولتاژی توسط الگوریتم ژنتیک بر روی مبدل DC-DC مورد نظر پیاده سازی شده است. اثبات پایداری سیستم در حضور کنترل کننده PID مورد بررسی قرار گرفته است. نتایج نشان می‌دهند که الگوریتم ژنتیک به عنوان تخمین‌گر ضرائب وزنی تنظیم ولتاژ خروجی را در مبدل‌های DC-DC چند خروجی بهبود می‌بخشد. نتایج شبیه‌سازی دقت و صحت عملکرد روش ارائه شده را تایید می‌نماید.



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