A novel single to two-phase matrix converter for driving a symmetrically designed two-phase induction motor

We propose a novel single to two-phase matrix converter (iS2MC) for driving a symmetrical two-phase induction motor. Matrix converter (MC) technology is already used in industrial applications, but is limited to three-phase induction motor with three-phase power line. The iS2MC, which consists of 8 bi-directional switches, enables a two-phase induction motor to be driven by single-phase power line without smoothing capacitors for the first time. The iS2MC generates independent two-phase voltages controlled by a simple switching algorithm, which is designed to hold the switching state for a period of the output source to decrease switching loss. The two-phase motor driven by iS2MC eliminates start-run capacitors and generates more torque than the three-phase motor. The performance of the iS2MC system with symmetrical two-phase induction motor was confirmed by both simulation and experiment.