一种减少开关管数量的单相AC-DC-AC三电平三桥臂变换器

This paper presents a new single-phase ac-dc-ac three-level three-leg converter composed of three coupled-inductors and six active switches. The system model, operation principles, and a control strategy are presented and discussed. Additionally, a space-vector pulsewidth modulation technique is developed to double the effective frequency of the grid and load voltages and to reduce the switching l...