Space vector modulation applied to three-phase three-switch two-level unidirectional PWM rectifier

This work presents a methodology to apply space vector modulation to three-phase three-switch two-level Y-connected unidirectional PWM rectifier. Converter switching stages are analyzed to determine switches control signals for space vector modulation. A switching sequence is proposed to minimize the number of switches commutations. Rectifier models and vector control structure are also described. In order to validate the proposed modulation, experimental results are presented for a 20 kW prototype.