Abstract
A single-active switch high-voltage gain non-coupled inductor DC–DC converter is presented. The introduced converter achieves high step-up gain without using any coupled inductors or transformers, provides high efficiency, and has a simple control system. The converter also achieves low voltage stress on the switch and diodes without clamping circuits, reducing cost, conduction losses, and complexity. The input current of the introduced converter is continuous with low ripple, and is therefore suitable for renewable energy applications in which the fast dynamic response of the converter is necessary. The principle of operation and design considerations of the introduced converter are investigated. A 200 W prototype circuit with 40 kHz switching frequency, 40 V input voltage, and 250 V output voltage is implemented. The prototype operates at 93.2% efficiency, with voltage and current error of less than 4% compared to theoretical values.
Highlights
Due to political focus on environmental issues, global warming and rising global energy demand, renewable energy sources such as photovoltaic systems (PV), wind power, and fuel cells have received more attention
In addition to their use in renewable energy systems, high gain DC– DC converters are used in other applications, e.g. DC distribution networks, uninterruptable power supplies (UPS), and energy storage systems [1]
For conventional DC–DC converters to operate with high gain, they require a very high duty cycle resulting in reverse recovery problems with diodes and high conduction losses in the semiconductor devices
Summary
Due to political focus on environmental issues, global warming and rising global energy demand, renewable energy sources such as photovoltaic systems (PV), wind power, and fuel cells have received more attention. Some renewable energy sources such as PV and energy storage systems have low output voltage, for small systems or where active cell balancing is required. Research in high-voltage gain DC–DC converters has been increasing in recent years. In addition to their use in renewable energy systems, high gain DC– DC converters are used in other applications, e.g. DC distribution networks, uninterruptable power supplies (UPS), and energy storage systems [1]. For conventional DC–DC converters to operate with high gain, they require a very high duty cycle resulting in reverse recovery problems with diodes and high conduction losses in the semiconductor devices. Conventional DC– DC converters suffer from high-voltage stress on diodes and switches. Numerous high gain DC–DC converters have been introduced to tackle these issues in conventional DC–DC converters [2, 3]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
