مبدل چندپایانه‌ای بدون خازن: تحلیل، کلیدزنی، مدلسازی و کنترل

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه صنعتی قم

چکیده

در سالهای اخبر مبدل‌های چندپایانه‌ای متفاوت و متنوعی برای استفاده در کاربردهایی که چندین منبع-بار وجود دارد با اهدافی مختلفی چون کاهش قیمت، کاهش حجم، افزایش بازده و یا افزایش طول عمر پیشنهاد شده‌اند. این مقاله یک مبدل سه پایانه‌ای که جهت حذف خازن‌های حجیم معمول در باس مشترک مبدل‌ها پیشنهاد شده است مورد تحلیل و بررسی قرار می‌دهد. در این مقاله چندین روش کلیدزنی مختلف برای مبدل مذکور ارائه گردیده است و نحوه پیاده‌سازی آنها تشریح و مورد ارزیابی قرار گرفته است. همچنین مدل سیگنال کوچک مبدل مورد بحث استخراج شده است و جهت ارائه سیستم کنترل مستقل برای هر پایانه، با استفاده یک روش پیشنهادی جداسازی، تاثیر ولتاژ پایانه‌ها بر روی یکدیگر حذف گردبده است. این مقاله در نهایت یک سیستم کنترل بر اساس روش بهینه‌سازی دامنه برای مبدل مذکور ارائه داده است. جهت بررسی صحت و کارایی تحلیل‌ها و روشهای پیشنهادی، مبدل مورد بحث شبیه‌سازی شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Capacitor-less Multiport Converter: Analysis, Switching, Modelling and Control

نویسندگان [English]

  • Seyed Mohammad Dehghan
  • Mojtaba Heydari
Faculty of Electrical and Engineering, Qom University of Technology, Qom, Iran
چکیده [English]

In the recent years, many different multi-port converters have been proposed for multi-source multi-load applications in order to improve the features of a hybrid system such as cost, size, efficiency and life time. This paper surveys and develops a capacitor-less three-port converter which has been presented to eliminate the bulk capacitor in common DC bus. In this paper, several switching approaches are proposed for this converter and implementation methods of them are described and evaluated. In addition, considering constant voltage in one of the ports, a small signal model is extracted for the converter which has five state variables due to existence of two capacitors and three inductors. In order to control different port independently, using an innovative method, the converter outputs are decoupled. Finally, a control system based on magnitude optimization is presented for the converter. Simulation results are used to verify the validity and the performance of the proposed approaches and analysis's.

کلیدواژه‌ها [English]

  • Multi-port Converter
  • Switching Algorithm
  • Small signal Model
  • Magnitude Optimization
 
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