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A Soft Switched DC-DC Boost Converter for Use in Grid Connected Inverters
|Journal of Operation and Automation in Power Engineering
|مقاله 8، دوره 5، شماره 1، شهریور 2017، صفحه 75-82 اصل مقاله (777.64 K)
|نوع مقاله: Research paper
|شناسه دیجیتال (DOI): 10.22098/joape.2017.550
|S. Jalilzadeh* 1؛ M. Pakdel2
|1Electrical Engineering Department, University of Zanjan, Zanjan, Iran.
|2university of zanjan,electrical department,zanjan/iran
|This paper presents a soft-switching DC-DC boost converter, which can be utilized in renewable energy systems such as photovoltaic array, and wind turbine connections to infinite bus of a big power network, using grid connected inverters. In the proposed topology for the DC-DC boost converter, the main and the auxiliary power switches are turned on and turned off with zero voltage switching (ZVS) and zero current switching (ZCS), respectively. Furthermore, by applying soft-switching techniques to driving power switches, the power losses and stresses associated with commutation of power devices decrease significantly. The efficiency of the proposed soft-switched DC-DC converter at various output powers is compared with that of the traditional DC-DC converter and a few topologies proposed in recent literature. This comparison indicates that the proposed DC-DC boost converter is much more efficient around the rated power (1 kW). The power topology and the control strategy applied to the proposed soft-switched DC-DC boost converter, which is connected to a grid-tied inverter, are analyzed theoretically by simulation studies. Moreover, an experimental prototype is implemented to verify the theoretical analysis and the simulation studies.
|soft switching؛ DC-DC converter؛ Zero voltage switching (ZVS)؛ Zero current switching (ZCS)؛ Grid connected inverters؛ Renewable energy systems
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