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Improved Transfer Functions for Modified Sheppard-Taylor Converter that Operates in CCM: Modeling and Application
Faqiang Wang
Abstract The improved transfer functions of the modified Sheppard?Taylor (MS-T) converter, which is capable of regulating output voltage under a wide range of input voltage and load variations, negligible current ripple, and fewer components in comparison to the Sheppard?Taylor (S-T) converter, operating in continuous conduction mode (CCM) are investigated in this study. Its DC equilibrium point, small signal model, and transfer functions are derived and analyzed. Then, the voltage controller is applied for this MS-T converter. The comparisons between the derived model and the existing model are presented. The hardware circuit is designed and the circuit experiments are provided for validation. The results show that the improved transfer functions of the MS-T converter are more effective and general than the previous ones for describing its real characteristics.
Keyword Transfer functions, modified Sheppard?Taylor (MS-T) converter, voltage controller, stability
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