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Abstract

In this article, a novel DC-DC converter is proposed, which is derived from the parallel combination of a conventional boost converter and a Quasi-Z-Source converter. This converter benefits from the features of both mentioned converters. Compared to similar structures, the proposed converter has a suitable gain. This is due to the parallel combination of two voltage-boosting structures, namely boost and Quasi-Z-Source. The simple and linear circuit operation of the converter is another advantage. On the other hand, the control circuit of the converter is also simple and can be designed as PWM. Due to the Quasi-interleaved structure at the input of the proposed converter, the input current is divided between two input paths. This reduces the current stress on active and passive elements. The input filter inductor has a large value. Therefore, the input current of the converter is continuous, and the converter operates in CCM. Additionally, the input current ripple is improved, which is suitable for many applications. The ohmic losses of the elements are low due to the current division between parallel paths. Therefore, its efficiency is improved compared to similar structures. This article presents the design and performance analysis of the proposed converter. To validate the converter’s performance, an 80-watt circuit was designed and simulated using PSPICE software. The comparison between the simulation results and the theoretical analysis of the proposed converter substantiates the accuracy of the proposed converter’s operation.

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