IJE TRANSACTIONS A: Basics Vol. 29, No. 4 (April 2016) 505-513   

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T. Yuvaraja and K. Ramya
( Received: November 30, 2015 – Accepted in Revised Form: April 14, 2016 )

Abstract    This paper presents an analytical modeling method of optimal control variables to maximize output power for switched reluctance generators (SRGs) in single pulse mode operation. This method extends the basic theory of the Stiebler model and utilizes the flux linkage function to express the inductance model of SRG. In this paper, the optimal phase current shape of SRG for maximum output power is investigated to determine optimal control variables based on phase current model. The expression of phase current in this paper that is in terms of control variables is solved using the basic equation of phase voltage based on inductance model, and then the characteristics of phase current and the energy conversion relations are analyzed to determine optimal shape of phase current. Furthermore, the expressions of phase flux linkage, rms phase current, and phase torque based on the proposed phase current model are presented in this paper to know the trend of main electrical losses. Results from analysis show that the switched reluctance generator with the optimal control variables can produce maximum output power and the shape of phase current in this case is flat top. Simulation and experimental results are presented to verify the proposed method.


Keywords    Optimal Phase current shape, Control Variables, Switched Reluctance Generator


چکیده    در این مقاله یک روش مدلسازی تحلیلی از متغیرهای کنترل بهینه برای به حداکثر رساندن قدرت خروجی در ژنراتور مقاومت مغناطیسی در حالت کار تک پالس ارائه شده است. این روش نظریه اساسی مدل استیبلر و بهره گیری از تابع شار برای بیان مدل اندوکتانس SRGرا توسعه می‌دهد. در این مقاله، فاز بهینه شکل رایج SRG برای حداکثر قدرت خروجی برای تعیین متغیرهای کنترل بهینه و بر اساس مدل فعلی فاز بررسی شده است. در این مقاله جریان فاز برحسب متغیر های کنترل با استفاده از معادله عمومی ولتاژ فاز و بر اساس مدل اندوکتانس حل شده و سپس ویژگی های حالت و روابط تبدیل انرژی برای تعیین شکل مطلوب جریانهای فاز مورد تجزیه و تحلیل قرار گرفتند. علاوه بر این، عبارت شار فاز پیوندی، جریان rms فاز، و گشتاور فاز بر اساس مدل جریانهای فاز ارائه شده است تا به شناخت روند اصلی اتلاف الکتریکی بی‌انجامد. نتایج حاصل از تجزیه و تحلیل نشان می دهد که ژنراتور مقاومت مغناطیسی با متغیرهای کنترل بهینه شده می‌تواند حداکثر قدرت خروجی و شکل جریانهای فاز تولید کرده و جریان در این حالت در این مورد بالا مسطح است. شبیه سازی و نتایج عملی به منظور تائید روش پیشنهادی ارائه شده‌اند.


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