Modulation schemes with enhanced switch thermal distribution for single-phase AC-DC-AC reduced-switch converters

Abstract

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Analysis and control of tundish induction heating power supply using modular multilevel converter

“…For medium‐ or high‐power industrial electromagnetic metallurgical occasions, the converters topologies with multilevel or high dc voltage level appeal for high‐power TIHPS. Single‐phase ac/ac topologies provide bidirectional power flow and are used as load suppliers [6–8]. The cascaded structure converter can also realise high‐power and multilevel output [9].…”

Single‐phase ac–dc–ac topology for grid overvoltage and voltage harmonic mitigation

“…The single‐phase ac–dc–ac conversion can be performed by using the traditional four‐leg (eight switches) topology. There are some works in the literature in which topologies with reduced switches count are proposed as single‐phase load suppliers [19, 30–33]. The three‐leg (six switches) converter, as shown in Fig.…”

“…1 a and denoted in this paper as 3L1D, i.e. three legs and one dc‐link, is developed in many ways [19, 31, 33]. The converter 3L1D is quite interesting because, when compared with the four‐leg topology, it uses two switches less and can generate lower power losses by using a shared leg between grid and load.…”