MANYETiK DENETiMLi BOBiN iLE ELEKTRONiK BALAST GÜÇ DENETiMi

Elektronik balastlar manyetik balastlara kıyasla, daha yüksek etkinlik faktörüne, daha iyi ısık kalitesine, daha uzun lamba ömrüne ve daha küçük hacme sahiptir. Bu çalısmada, lamba gücü, balast empedansını ve rezonans frekansını degistiren manyetik kontrollü bobin tarafından yapılmaktadır ve bu yöntem kendinden tetiklemeli akim beslemeli push pull tipi elektronik balastlarda gerçeklestirilmistir. Burada sunulan güç kontrolü yönteminde, sıfır voltaj anahtarlaması gerçeklestirilmistir. Elde edilen sonuçları karsılastırmak için, sunulan yöntemin aynı zamanda simulasyonuda yapılmıstır. Deneysel ve simulayon sonuçları uyum göstermektedir.

Anahtar Kelimeler:

Push pull evirici, Manyetik denetimli bobin, Elektronik balast, Isık denetimi.

ELECTRONIC BALLAST POWER CONTROL WITH MAGNETICALLY CONTROLLED COIL

Electronic ballasts have several advantages over magnetic ballasts such as providing higher efficacy, better illumination quality, longer lamp life and smaller size. In this study, magnetically controlled inductor controls the florescent lamp power by changing the ballast impedance and resonant frequency and the proposed topology is implemented on self-oscillating push pull electronic ballast. In the proposed ballast power control technique, zero voltage switching (ZVS) is accomplished. The topology is also simulated in order to compare the results. Both simulation and experimental results have good agreement.

Keywords:

Push pull inverter, Magnetically controlled coil, Electronic ballast, Dimming.,

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