Tepe akım modu kontrollü Zeta dönüştürücünün küçük işaret analizi

Bu çalışmada, tepe akım-modu kontrollü, izole edilmemiş Zeta dönüştürücünün küçük işaret analizi sunulmuştur. Yapılan analizde PWM anahtarlama modeli Sürekli İletim Modu’nda (SİM) değerlendirilmiştir. Kontrol işaretinden çıkış gerilimine olan transfer fonksiyonu çıkış kondansatöründeki esr (eşdeğer seri direnç) de dâhil olmak üzere sembolik formda elde edilmiştir. Transfer fonksiyonuna ait sıfırların kesin çözümleri sembolik olarak verilmiştir. Ancak, elde edilen tepe akım modu kontrollü PWM anahtarlama modelinin paydası 5. mertebeden bir polinom olduğundan, kutupların ve kalite faktörlerinin sembolik formda bulunması için yaklaşık kök analizi kullanılması gerekmektedir. Bu analiz kullanılarak yaklaşık kutuplar ve kalite faktörleri de sembolik formda türetilmiştir.

Small signal analysis of peak current mode controlled Zeta converter

In this study, small signal analysis of peak current-mode controlled, non-isolated Zeta converter is presented. The PWM-switch model in Continuous Conduction Mode (CCM) is utilized in the analysis. The control to output voltage transfer function is derived in symbolic form including the esr of the output capacitor. The exact zeros of the transfer function are given in symbolic form. However, the peak current-mode PWM-switch model yields 5th order polynomial in its denominator, which necessitates approximate root analysis in finding the symbolic equations of its poles and quality factors. By using this analysis, the approximate poles and quality factors also derived symbolically in the paper.

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