دانلود مقاله ISI انگلیسی شماره 53961
عنوان فارسی مقاله

تشخیص خطاهای ترکیبی در ماشین های القایی با شاخه های استاتور موازی از طریق DWT جریان راه اندازی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
53961 2009 16 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Detection of combined faults in induction machines with stator parallel branches through the DWT of the startup current
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Mechanical Systems and Signal Processing, Volume 23, Issue 7, October 2009, Pages 2336–2351

کلمات کلیدی
تشخیص خطا؛ تبدیل موجک گسسته؛ راه اندازی حالت گذرا ؛ عدم تقارن روتور؛ گریز از مرکز مختلف؛
پیش نمایش مقاله
پیش نمایش مقاله تشخیص خطاهای ترکیبی در ماشین های القایی با شاخه های استاتور موازی از طریق DWT جریان راه اندازی

چکیده انگلیسی

The main objective of this paper is to diagnose the presence of combined faults in induction machines. For this purpose, a methodology based on the application of the Discrete Wavelet Transform (DWT) to the stator startup current is used. This approach was applied in previous works with success to the diagnosis of rotor asymmetries and mixed eccentricities in motors with different sizes and conditions. However, as most of the diagnosis methods hitherto developed, the application of the proposed approach was circumscribed to situations in which a single fault was present in the machine. In addition, the influence of other phenomena such as load torque oscillations or voltage fluctuations was studied, but without considering the combination of these phenomena and the fault in the machine. This work is intended, first, to apply the proposed transient-based methodology to several cases in which different faults (rotor asymmetries, mixed eccentricities and inter-turn and inter-coil stator short-circuits) are simultaneously present in the machine and, second, to apply it to cases regarding faults combined with other phenomena making difficult the diagnosis, such as load torque oscillations. Interesting considerations regarding the preponderance of the effects of some of the faults are also done in the paper. The application of the methodology is focused on induction machines with stator parallel branches; in this sense, the suitability of the use either of the phase current or of the branch current for the diagnosis of each particular fault is analysed. The results look promising with regard to the validity of the methodology for the reliable discrimination of simultaneous electromechanical faults and the diagnosis of faults combined with other phenomena.

خرید مقاله
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