A non‐isolated high step‐up MIMO DC–DC converter for renewable energy applications

Abstract

This article offers a non‐isolated DC–DC converter with dual‐ports for input and dual‐ports for output with high step‐up ability. The converter has different levels of output voltage. The benefits of the proposed topology consist of the capability of giving high voltage gains with low duty cycle amount, the simple control of each duty cycle, and low per‐unit peak voltage stress (PPVS) over the semiconductors. The presented structure is suitable for clean energy applications. The operation principles, steady‐state analysis, voltage, and current equations extraction in continuous conduction mode (CCM) are carried out. To confirm the superiority of the proposed topology, the efficiency of the converter is compared to other multi‐input (MI) and multi‐output (MO) converters which were recently published in the literature. Eventually, an implemented prototype in the laboratory is used to verify the performance of the proposed structure.

Ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique

“…In recent years, various alternative energy sources such as photovoltaic plants and fuel cells have been explored and developed due to the exhaustion of traditional fossil energy resources and environmental pollution [1][2][3][4][5][6]. These alternative energy sources are widely used for the distributed generation, energy storage systems, hybrid electric vehicles and portable electronics etc.…”

A non‐isolated single‐switch ultra‐high step‐up DC–DC converter with coupled inductor and low‐voltage stress on switch

“…High step-up DC-DC circuits are not only popular in clean energies like photovoltaic or wind turbines. They are also popular in industry, physical, military, medical, transportation, aerospace, and many other applications that need input voltage boosting [1][2][3]. Ideally, if the duty cycle of the power switches increases and reaches to close 1, the step-up structure can achieve a high-voltage gain.…”

High step‐up MIMO DC–DC power converter control‐based pole placement

“…Therefore, it is necessary to use appropriate power electronics converters as an interface between renewable energy sources and load. 1 Multi-input converters by combining different renewable energy sources can be supplied the output load continuously. Multi-input converters can be divided into two types of isolated and non-isolated.…”

“…The inability to directly connect renewable energy sources to load is the main drawback of them due to a low output voltage and dependence on environmental conditions. Therefore, it is necessary to use appropriate power electronics converters as an interface between renewable energy sources and load 1 …”