بررسي عملکرد يکسوکننده سه‌فاز چهارسيمه افزاينده با کنترل يک پريود در بارهای نامتعادل
محورهای موضوعی : مهندسی برق و کامپیوتر
1 - دانشگاه تفرش
کلید واژه: ضريب توانيکسوکننده سه‌فاز چهارسيمهکنترل يک پريود و بار نامتعادل,
چکیده مقاله :
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.
Harmonic pollution of source currents and poor power factor are the main challenges of rectifiers. In this paper using one cycle control strategy, rectifiers can be operated at unity power factor. For performance analysis of this method harmonic injection and unbalanced load applied to the source side considered. Simulation results show that combination of three phase four leg rectifier with one cycle control can be improved power factor and harmonic pollution reduction especially in nonlinear and unbalanced loads in the source side.
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