• The Transactions of the Korean Institute of Electrical Engineers B
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• v.51 no.9
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• pp.537-544
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• 2002

This paper describes a comparative analysis of soft switching boost converters through design, production and experiment. Soft switching boost converters are designed to satisfy the condition of input voltage 170-265Vac, output voltage 400Vdc, output current 5A, output power 20W-2000W and unit power factor. In addition, parameter values are designed so that system operation can be compared under this is similar conditions. The efficiency of the combined inductor soft switching boost converter was 97.63% with 1011 load better than that of other boost converter types. The combined inductor soft switching converter has simple circuit construction and low switching loss. EMI resulted by the switching noise, and harmonic distortion.

• The Transactions of the Korean Institute of Power Electronics
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• v.25 no.2
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• pp.127-132
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• 2020

In this study, single-phase and three-level boost converters applied to the photovoltaic system were compared and analyzed in terms of efficiency and power density according to the input voltage and load conditions. For accurate analysis of efficiency, the losses in each device of the single-phase and three-level boost converters were derived using mathematical equations and simulations by using the PSIM thermal module. Then, the losses were compared with the efficiency confirmed through the actual experiments. Results confirmed that the efficiency and power density can be improved by applying the three-level boost converter to the system according to the selection of the switching frequency.