روش جدید مدولاسیون پهنای پالس مبتنی بر مفهوم تجزیه مدار پایه برای یکسوساز ویینا

نویسندگان

دانشکده مهندسی برق و کامپیوتر - دانشگاه صنعتی نوشیروانی بابل

چکیده

در این مقاله، راهبردجدیدی از مدولاسیون پهنای پالس مبتنی بر مفهوم تجزیه مدار پایه، به‌عنوان جایگزینی برای روش‌های متعارف مدولاسیون ناپیوسته در یکسوساز ویینا پیشنهاد گردیده‌است. براساس روش پیشنهادی، یکسوساز ویینا در هر ناحیه کاری معین به دو مبدل بوست دوسطحی تجزیه‌شده که این امر کاهش چشمگیری در پیچیدگی طراحی کنترل‌کننده به‌همراه خواهدداشت. ازطرفی، در مقایسه با سایر روش‌های متعارف مدولاسیون پهنای پالس پیوسته، راهبردپیشنهادی سبب کاهش تلفات کلیدزنی در فرکانسهای کلیدزنی مشابه نیز می‌گردد. در این مقاله، پیاده‌سازی نرم‌افزاری روش کنترلی تحت توان نامی 882 وات و فرکانس کلیدزنی 10 کیلوهرتز برروی یکسوساز ویینا صورت گرفته‌است. نتایج شبیه‌سازی موید برتری روش پیشنهادی نسبت به سایر روش‌های مدولاسیون پیوسته و ناپیوسته به‌ترتیب از نقطه‌نظر کاهش تلفات و کاهش پیچیدگی ساختار کنترلی می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

A Novel Pulse Width Modulation Strategy Based on Circuit-Level Decoupling for Vienna Rectifier

نویسندگان [English]

  • T. Fadaeian
  • S. A. Gholamian
  • Ho. Ghoreishy
Faculty of Electrical and Computer Engineering, BabolNoshirvani University of Technology, Babol, Iran
چکیده [English]

In this paper, a novel pulse width modulation strategy based on circuit level decoupling concept is presented for Vienna rectifier as an alternative of conventional discontinuous modulation methods. Based on the proposed strategy, the Vienna rectifier can be decoupled into two two-level boost converters in every defined operating section, and though the controller design will be simplified. Moreover, compared to conventional continuous PWM methods, the proposed scheme, can also results in reduction of the switching loss by one third at the same switching frequencies. In this paper, the software implementation of the control technique has been carried out on Vienna rectifier under 882w output power and10 KHz switching frequency. The simulation results prove the effectiveness of the proposed method over other continuous and discontinuous modulation schemes, in terms of loss reduction and reduced complexity in control structure.

کلیدواژه‌ها [English]

  • Vienna rectifier
  • circuit-level decoupling
  • discontinuous pulse width modulation
  • neutral point balance

مراجع

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