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ارزیابی و مقایسه روشهای تخمین بازده موتورهای سهفاز القائی در حین کار | ||
الکترومغناطیس کاربردی | ||
دوره 10، شماره 2 - شماره پیاپی 25، آبان 1401، صفحه 35-53 اصل مقاله (1.17 M) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
علی مصلی نژاد* 1؛ علی رضا قائم پناه2 | ||
1نویسنده مسئول: استادیار، دانشگاه شهید بهشتی، تهران، ایران | ||
2دانشجوی دکتری، دانشگاه شهید بهشتی، تهران، ایران | ||
تاریخ دریافت: 26 تیر 1400، تاریخ بازنگری: 15 فروردین 1401، تاریخ پذیرش: 15 تیر 1401 | ||
چکیده | ||
روشهای استاندارد برای اندازهگیری بازده موتورهای الکتریکی به دو روش مستقیم و غیر مستقیم تقسیم میشود. تامین شرایط و تجهیزات مورد نیاز این روشها برای اندازهگیری بازده موتورهای الکتریکی در حین کار، معمولا به سهولت میسر نیست. در این شرایط، برای اندازهگیری بازده موتورهای سه فاز القایی، از روشهای تخمین برخط بازده این موتورها میتوان استفاده نمود. به این صورت که با استفاده از اندازهگیری متغیرهای الکتریکی، شامل جریان، ولتاژ، توان و ضریب توان موتور، توان خروجی موتور تخمین زده میشود. روشهای تخمین برخط بازده موتورهای سه فاز القایی به چهار دسته روش لغزش، روش جریان، روش مدار معادل الکتریکی و روش تخمین گشتاور فاصله هوایی تقسیم میشود. در این بین، دو روش مدار معادل الکتریکی و تخمین گشتاور فاصله هوایی، دقت مناسبی برای محاسبه بازده موتورهای سه فاز القایی دارند. در این مقاله، مطالعات قبلی انجام شده برای تخمین بازده موتورهای سه فاز القایی در حین کار، با استفاده از دو روش مدار معادل الکتریکی و تخمین گشتاور فاصله هوایی، مرور میشود. | ||
کلیدواژهها | ||
موتور سه فاز القایی؛ بازده؛ گشتاور فاصله هوایی؛ مدار معادل الکتریکی؛ تلفات بادخوری و اصطکاک؛ تلفات بار پراکنده | ||
عنوان مقاله [English] | ||
Review on In-service Efficiency Estimation of Three Phase Induction Motors | ||
نویسندگان [English] | ||
Ali Mosallanejad1؛ Alireza Ghaempanah2 | ||
2Department of electrical engineering, Shahid Beheshti University، tehran ، iran | ||
چکیده [English] | ||
The standard methods for determining the efficiency of electric motors have been divided into two distinct categories; direct and indirect methods. Usually, it is difficult to prepare all necessary facilities and requirements for measuring the efficiency of in-service electric motors. Meanwhile, some online efficiency estimation methods have been developed for three-phase induction motors that can be used in necessity. In these methods, the output power of the three-phase induction motor is estimated by measuring electrical signals of the motor including current, voltage, active power, and power factor. Three-phase induction motor's in-service efficiency estimation methods are divided into four categories including slip method, current method, equivalent circuit method, and air gap torque method. The two latter mentioned methods have enough accuracy in comparison with the standard methods. In this article, previous literature on online and in-service efficiency estimation methods of three-phase induction motors, based on the equivalent circuit method and the air gap torque method are reviewed. | ||
کلیدواژهها [English] | ||
Three phase induction motor, efficiency, air gap torque, equivalent circuit method, friction and windage loss, stray loss | ||
مراجع | ||
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