دانلود مقاله ISI انگلیسی شماره 58113
عنوان فارسی مقاله

توسعه کنترل محرک قدرت مداوم برای لامپ دیود ساطع نور (LED)

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
58113 2013 7 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Development of constant-power driving control for light-emitting-diode (LED) luminaire
منبع

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

Journal : Applied Thermal Engineering, Volume 50, Issue 1, 10 January 2013, Pages 645–651

کلمات کلیدی
روشنایی LED؛ محرک LED؛ محرک ثابت LED قدرت؛ کنترل ال سی دی؛ کنترل روشنایی LED
پیش نمایش مقاله
پیش نمایش مقاله توسعه کنترل محرک قدرت مداوم برای لامپ دیود ساطع نور (LED)

چکیده انگلیسی

The illumination of an LED may be affected by operating temperature even under constant-current condition. A constant-power driving technique is proposed in the present study for LED luminaire. A linear system dynamics model of LED luminaire is first derived and used in the design of the feedback control system. The PI controller was designed and tuned taking into account the control accuracy and robust properties with respect to plant uncertainty and variation of operating conditions. The control system was implemented on a microprocessor and used to control a 150W LED luminaire. The test result shows that the feedback system accurately controls the input power of LED luminaire to within 1.3 per cent error. As the ambient temperature changes from 0 to 40 °C, the LED illumination varies slightly (−1.7%) for constant-power driving, as compared to that of constant-current driving (−12%) and constant-voltage driving (+50%). The constant-power driving has revealed advantage in stabilizing the illumination of LED under large temperature variation.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.