Flyback Da-Da Dönüştürücüler için Yeni Bir RCD Pasif Bastırma Hücresinin Analiz ve Benzetimi

Abstract

Darbe Genişlik Modülasyonlu (DGM) flyback da-da dönüştürücüler oldukça popüler olmalarının yanı sıra endüstride geniş bir yelpazede kullanım alanı bulurlar. Ancak bu dönüştürücülerde yarıiletken anahtar kesime girdiğinde, kaçak endüktanstan ötürü yarıiletken anahtar üzerinde gerilim pikleri oluşur. Bu nedenle kesime grime aşamasında gerilim piklerinin değerini sınırlamak için pasif ya da aktif bastırma hücreleri gerekir. Bu makalede flyback da-da dönüştürücüler için yeni bir pasif bastırma hücresi sunulmuştur. Önerilen bastırma hücresi düşük maliyet, kontrol kolaylığı ve basit yapı özelliklerine sahiptir. Makalede, dönüştürücünün detaylı analizi sunulmuş ve analizler benzetim çalışması ile doğrulanmıştır. Bütün analizler ve benzetim çalışması 100 kHz anahtarlama frekansı ve 16 W çıkış gücünde gerçekleştirilmiştir.

Keywords

• Da-Da dönüştürücüler
• Flyback
• Kaçak endüktans
• Bastırma hücreleri

Analysis and Simulation of Novel RCD Passive Snubber Cell for Flyback Dc-Dc Converters

Abstract

Pulse Width Modulation (PWM) flyback dc-dc converters are pretty popular and have wide range application in the industry. Nevertheless, the leakage inductance issues cause high voltage spikes on the semiconductor switch when it is turned off. Consequently, passive or active snubber cells are needed at turned-off process for limiting the voltage spikes. In this paper, a novel passive snubber cell is proposed for PWM flyback dc-dc converter. The proposed snubber cell has low cost, ease of control and simple structure features. The detailed theoretical analysis of converter is presented and the analysis is demonstrated by a simulation setup in the paper. All analyses and simulation setup is made under 100 kHz switching frequency and 16 W output power conditions.

Keywords

• Dc-Dc converters
• Flyback
• Leakage inductance
• Snubber Cells

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