A Direct Single-Phase to Three-Phase AC/AC Power Converter

The traditional DC-link indirect AC/AC power converters (AC/DC/AC converters) employ two-stage conversion, which increases the circuit complexity along with gate driving challenges, placing an excessive burden on processor while implementing complex switching modulation techniques and leads to conversion losses due use of a large amount controlled semiconductor switches. On contrary, direct voltage controllers, as well frequency changers, suffer from high total harmonic distortion (THD) problems. In this paper, new single-phase three-phase step-down converter is proposed, utilizes multi-linking transformer bilateral triode thyristors (TRIACs) proposed employs single-stage mitigates changers. Instead using high-frequency pulse width modulated signals, line pulses are used trigger TRIACs converter, not only aids in reducing loss but also cost driver circuits. reduces THD output significantly compared performance validated against RL induction motor load terms overall individual components through MATLAB/Simulink environment. A reduced-scale laboratory prototype built tested evaluate converter. experimental simulation outcomes reveal feasibility excellent features topology.