Successive injections modulation of a direct three-phase to single-phase AC/AC converter for a contactless electric vehicle charger

Abstract

This paper proposes a successive injection modulation (SIM) method for a direct three-phase to single-phase AC/AC converter of a contactless electric vehicle (EV) charger. The converter has a fewer bi-directional switches than a matrix converter without a neutral line connection. It operates using injection and free-wheeling oscillation commutations based on a zero-current switching mechanism. Analytical calculations were derived using a steady-state analysis. Simulation results were obtained to validate the calculations. The proposed modulation increases output power three times compared to a non-successive one with the same circuit setup.

Keywords

• electric vehicles
• AC-AC power convertors
• battery chargers
• switching convertors
• zero current switching
• battery powered vehicles
• matrix convertors
• matrix converter
• fewer bi-directional switches
• successive injection modulation method
• contactless electric vehicle charger
• single-phase AC/AC converter
• successive injections modulation