بررسي عملکرد يکسوکننده سهفاز چهارسيمه افزاينده با کنترل يک پريود در بارهای نامتعادل
الموضوعات :
1 - دانشگاه تفرش
الکلمات المفتاحية: ضريب توانيکسوکننده سهفاز چهارسيمهکنترل يک پريود و بار نامتعادل,
ملخص المقالة :
يکي از مشکلات بزرگ يکسوکنندههاي سهفاز آلودگي هارمونيکي جريان منابع ولتاژ ورودي و افت شديد ضريب توان است. در اين مقاله با استفاده از ترکيب روش کنترل يک پريود و يکسوکننده سهفاز چهارسيمه اين مشکلات برطرف شده است. با استفاده از روش کنترل يک پريود يکسوکننده همواره تحت ضريب توان واحد بهره برداری میشود. برای بررسی کارایی روش کنترل یک پریود تزریق هارمونیک و اعمال بار نامتعادل سهفاز سمت منابع ولتاژ در نظر گرفته شده است. نتايج شبيهسازي نشان ميدهد که تلفيق ساختار يکسوکننده سهفاز چهارسيمه و کنترل يک پريود پاسخهاي بسيار خوبي در بهبود ضريب توان و کاهش آلودگي هارمونيکي جريان منابع سهفاز حتي هنگام اعمال بار غير خطي و نامتعادل سمت منابع سهفاز در مقایسه با روشهای مرسوم دارد.
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