کنترل بهبود یافته مبدل سمت روتور در توربین های بادی مبتنی بر ژنراتور القایی دو سو تغذیه به منظور بهبود قابلیت ایستادگی در برابر افت ولتاژ هنگام بروز خطای متقارن شبکه
Subject Areas : Application of soft computing in engineering sciences
1 - گروه مهندسی برق، واحد لنجان، دانشگاه آزاد اسلامی، اصفهان، ایران
Keywords: روش کنترلی مغناطیس زدایی, ژنراتور القایی دو سو تغذیه, ایستادگی در برابر افت ولتاژ, خطای سه فاز متقارن,
Abstract :
از بین توربین های بادی سرعت متغیر، استفاده از توربین های بادی مبتنی بر ژنراتور القایی دو سو تغذیه بسیار متداول است. اگر چه، به خاطر اتصال مستقیم استاتور آن ها به شبکه، نسبت به خطاهای شبکه بسیار حساس می باشند. این مقاله بهبود قابلیت ایستادگی در برابر افت ولتاژ هنگام بروز خطای سه فاز متقارن شبکه را مورد تحلیل قرار می دهد. بنابراین تغییرات 5 پارامتر هنگام بروز این نوع خطا مورد بررسی و تحلیل قرار می گیرند. این پارامترها عبارتند از ولتاژ استاتور، جریان روتور، جریان استاتور، سرعت روتور و ولتاژ لینک DC. به منظور بهبود قابلیت ایستادگی در برابر افت ولتاژ یک روش کنترلی مغناطیس زدایی بهبود یافته پیشنهاد شده است. این روش ثابت زمانی جریان طبیعی استاتور را کوتاه کرده و بر اساس نتایج شبیه سازی ارائه شده، تقریبا سیستم را در برابر تغییرات پارامتری ایمن نگه می دارد. به منظور نمایش موثر بودن روش پیشنهادی، نتایج این روش با یکی از بهترین روش های کنترلی مغناطیس زدایی قبلی مقایسه شده اند.
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