Logo image
Back
Topological survey of zeta power converters from classical designs to emerging architectures
Review   Open access   Peer reviewed

Topological survey of zeta power converters from classical designs to emerging architectures

Showrov Rahman, Anindya Banik, Md. Kawsar Hossain, Mainul Islam, Abdullah Al-Hysam, Istiak Ahmed and LTH profilområde: Energiomställningen
Energy conversion and management. X, Vol.31, 102222
2026
DOI: https://doi.org/10.1016/j.ecmx.2026.102222
pdf
Published3.89 MBDownloadView
Open Access CC BY V4.0

Abstract

Energy & Fuels Mechanics Physical Sciences Science & Technology Technology Thermodynamics
Initially introduced as the dual single-ended primary inductor converter (SEPIC), the zeta converter has since evolved significantly from the classical direct current (DC) converter. Its ability to provide both buck and boost operation while maintaining non-inverting output voltage, continuous output current with low ripple has made it increasingly popular in a wide range of applications. The converter can also operate over a wide input voltage range, making it well suited for renewable energy systems and battery-powered applications. Today, the zeta converter is widely used in photovoltaic (PV) energy systems, electric vehicles (EVs), light-emitting diode (LED) drivers, portable electronics, and modern microgrids (MGs). Its topological evolution has extended beyond the conventional non-isolated DC-DC converter to include isolated DC-DC converters, zeta-derived alternating current (AC) to DC converters, as well as DC-AC and AC-AC converter topologies that are derived from or inspired by the zeta topology. This paper reviews the topological evolution of the zeta converter across different AC and DC power conversion systems and their applications. It also presents a systematic classification of zeta and zeta-derived converters, a comparative analysis of prominent zeta converter topologies based on component count, intended applications, power rating, and key performance metrics. For DC applications, the performance metrics includes conversion efficiency, while for AC applications, it considers efficiency, power factor, and total harmonic distortion (THD). The study also proposes a topological performance index (TPI) to systematically evaluate the performance of the zeta converter topology against other widely used DC-DC converter topologies. Finally, this paper discusses the future opportunities and challenges associated with the continued development and application of the zeta converter.

Details

Metrics

1 Record Views
Logo image