Operation and analysis of high-voltage-gain dc-dc converters with voltage multipliers
"This research analyzes and investigates the steady-state operations of four different high-voltage-gain step-up dc- dc converters to achieve a high gain. These topologies consist of a two-phase interleaved boost stage with three various voltage multiplier (VM) stages. The first stage of the first three topologies is the same, which is a two-phase interleaved boost stage implemented by using inductors. The first family used in this research is based on a modified Dickson charge pump voltage multiplier stage, and this family has been studied in discontinuous conduction mode (DCM). The second family relies on a non-inverting or inverting diode-capacitors voltage multiplier stage and has been proposed in both continuous conduction mode (CCM) and DCM. The third family depends on bi-fold Dickson voltage multiplier cells, which have been examined in DCM. The fourth family is a two-phase interleaved dc-dc boost converter implemented by using directly coupled inductors with Dickson charge pump cells, and this family has been proposed in both CCM and DCM. Furthermore, the mathematical expressions for the voltage gains are derived, and the procedure for component selection is presented for each topology. The extended equations for the general structure of these families with any number of VM cells have been provided. Specifically, high voltage gain (HVG), continuity of input current, and less stress on the components are the main features of these topologies, which will make them more suitable for many applications such as PV, fuel cells, battery storage systems, dc microgrids, and street lighting. Finally, simulation models and hardware prototypes have been built and implemented to verify the mathematical analyses of these topologies"--Abstract, page iv.
Discontinuous conduction mode (DCM), High gain, High gain converter, Step-up dc-dc converter, Two-phase interleaved boost converter, Voltage multiplier cells (VMCs), Electrical and Computer Engineering
Missouri University of Science and Technology
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