Vafa Marzang, Peyman Alavi, Morteza Dezhbord, S. Hosseini, N. Rostami
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Symmetric Extendable Ultra High Step-Up Non-Isolated DC-DC Converter
In this paper a high step up non isolated DC-DC converter with extendable topology is proposed. This converter is symmetric and by using this structure it can be possible to achieve high voltage gain in low duty cycle range. This converter consists of m + n+ 2 Active Passive Inductor Cell (APIC) and a Voltage Multiplier Cell (VMC). In addition to increasing voltage gain, the VMC decreases voltage stress on the switches and diodes. Operational modes and steady state analysis of proposed converter will be discussed completely, also voltage gain and voltage stress on the switches and diodes will be formulated. Different components will be designed for example output capacitor will be designed in order to decrease output voltage ripple. Voltage gain and voltage stress on the switches will be compared with related structure to illustrate advantages of proposed converter. In order to verify theoretical analysis of proposed converter will be simulated in PSCAD and results of this simulation will be analyzed completely. In this simulation input voltage is equal to 20V and provides 500 W power in output
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