High-Gain Resonant Switched-Capacitor Cell .The contributions of this thesis are related to the development of dc/dc switching power converters for high step-up applications. These includes the following:

Proposed a non-isolated dc/dc converter structure for high step-up voltage conversion which inherits direct power transfer property.

Derived a new family of dc/dc converters based on the proposed converter structure.

Analyzed both steady state and dynamic behaviour of the proposed converter structure based on a buck-boost converter topology