基于开关单元结构多电平AC-AC变换器的动态电压恢复器

Dynamic voltage restorer (DVR) technology has become a mature power quality product. In high-power applications, DVR using a multilevel converter is commonly used. However, DVR using a multilevel direct pulse width modulation (PWM) ac-ac converter has not been well studied. This paper presents a new DVR topology using a cascaded multilevel direct PWM ac-ac converter. In the proposed scheme, the un...