AC-DC-AC Applications and Matrix Converters
Technical Lecture Session
Gumbo Applications 10W LED to KW Converter
Solid-state transformer, multiport converter, MV converter, active power decoupling, reduced dc-link, electrolytic capacitor less, ZVS.
This paper presents a 7.2 kV single-phase single-stage modular soft-switching solid-state transformer (M-S4T). The M-S4T consists of five stacked 1.44 kV 10 kVA 1-phase converter modules using 3.3 kV SiC MOSFETs and diodes. The proposed M-S4T uses a three-port structure for applications like renewable energy sources, energy storage integration into the grid. With high-frequency isolation, reduced dc-link, and 120 Hz active power decoupling, passive components can be minimized - which often dominates the size of medium-voltage converter. The M-S4T has low EMI and high efficiency over the full range with ZVS. Experimental results at 2 kV are presented.