Chopped wave controllable impedor based on two-level differential direct AC/AC conversion

The invention discloses a chopping controllable impedor based on two-level differential direct AC/AC conversion. The chopping controllable impedor is composed of a chopping controllable capacitor and a reactor. The chopping controllable capacitor and the reactor are combined in series and in parallel to form two types of CCIs. One is a series-connection type chopping controllable impedor formed by connecting a chopping controllable capacitor and an electric reactor in series, and the other is a parallel-connection type chopping controllable impedor formed by connecting a chopping controllable capacitor and an electric reactor in parallel. The continuous change of the fundamental frequency equivalent impedance of the chopper controllable impedor between an inductive mode and a capacitive mode is realized by adopting a PWM modulation strategy of carrier phase shift PWM or input voltage polarity judgment. 本发明公开了基于两电平差分式直接AC/AC变换的斩波可控阻抗器，它由斩波可控电容器和电抗器构成。斩波可控电容和电抗器串并联组合，构成了两种类型的CCI。一是由斩波可控电容和电抗器串联构成的串联型斩波可控阻抗器，二是由