利用开关单元结构和耦合电感解决换流问题的单相PWM AC-AC变换器

This paper presents novel single-phase pulse width modulation (PWM) ac–ac converters that can solve the commutation problem in single-phase direct PWM ac–ac converters without sensing the input voltage polarity. By using a basic switching cell structure and coupled inductors, the proposed ac–ac converters can be short- and open-circuited without damaging the switching devices. Neither lossy RC snu...