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This paper presents a PV inverter system formed by a DC-DC converter and a full-bridge DC-AC converter. The DC-DC converter combines the boost and flyback topologies to produce a semi-sinusoidal output current and to achieve the high step-up objective. A full-bridge DC-AC converter controlled with low-frequency switching techniques is then used to convert the current into sinusoidal form and to feed...
This paper proposes a new DC-DC converter. The DC-DC multilevel boost converter, based on one inductor, one switch, 2N-1 diodes and 2N-1 capacitor, for N levels plus the reference (total N+1 levels), is a boost converter able to control and maintain the same voltage in all the Nx output levels, and able to control the input current. This converter is based on the multilevel converters principle, and...
This paper proposes a novel DC-AC converter topology for fuel cells applications, and mentions the reduction methods of input current-ripple. Fuel cells are generated electricity by chemical reaction. Chemical reaction time is much slower than commercial frequency. So, input current-ripple may damage the fuel consumption and life span. The conventional DC-AC converter for fuel cells has large capacitor...
A novel topology for single phase single stage isolated power factor correction (PFC) based on boost converter has been suggested in this paper. This PFC operates in continuous conduction mode (CCM) with constant switching frequency which injects minimum of harmonic into the power system. The leakage inductor in high frequency transformer of the insolated PFC causes voltage impulses which can damage...
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