Abstract
This paper presents a comprehensive feasibility study of an interleaving approach for a quasi-Z-source inverter. The state-of-the-art approach revealed that an interleaving approach is often used to improve the efficiency and power density that can overcome the problem of oversized passive elements of quasi-Z-source-based converters. The focus is on the application of the interleaving approach in terms of the comparison of several important parameters of a quasi-Z-source inverter. Our analysis includes losses, capacitor and inductor sizes, as well as semiconductor costs. The theoretical comparison is based on the quasi-Z-source inverter model and the losses model. Simulation and experimental verification of theoretical statements are provided. It was found that a 40% reduction of inductor volume, along with 15–20% of efficiency improvements, are achievable. The results are discussed in the conclusion.
Highlights
The Google Little Box Challenge (GLBC) revealed extremely high interest in the topic of high-power density inverters for photovoltaic (PV) applications
Advances in wide bandgap (WBG) materials and their role in power electronics manufacturing have been phenomenal in the last decade
Our goal is to study the feasibility of the interleaving approach for a Z-source-based inverter with WBG semiconductors
Summary
The Google Little Box Challenge (GLBC) revealed extremely high interest in the topic of high-power density inverters for photovoltaic (PV) applications. It was demonstrated that the extremely high-power density of a power electronics converter is achievable [1,2]. The finalists demonstrated a similar approach using an interleaved full-bridge inverter, wide bandgap (WBG) semiconductors and an active power decoupling circuit [3,4,5]. This competition was intended for a converter designed with a narrow input voltage regulation range, whereas string solar inverters commonly have a wide input voltage regulation range. Advances in WBG materials and their role in power electronics manufacturing have been phenomenal in the last decade. Large-scale manufacturing is bringing overall costs down, and improving performance handling capability [6]
Sign-in/Register to view highlights & summary 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.
